Notes

Approach for very early medical diagnosis of lots cell "sub-health".<br>
[Abstract] This write-up introduces a concept as well as technique of accurate as well as early diagnosis of the "sub-health" condition of load cells.

[Key phrases] early; medical diagnosis; "sub-health"; tons cell; approach.

I. Introduction.

With the constant deepening of business technical change, digital evaluating instruments have actually been made use of more and also a lot more extensively in process circulation, procedure control, as well as settlement as well as dimension. The resistance pressure type load cell (hereinafter described as the sensing unit) is a type of steel elastic body as the force.

- Determining instruments with electric conversion feature, and sensors are the core elements of digital considering tools. As a result of the intrinsic features of the sensor itself.

And in a facility and rough setting, its failings are identified by diversity and complexity, and the failing rate is likewise higher. Present.

Replacing the sensor in the field judgment will not just affect the typical manufacturing rhythm, yet also create the wind, the heater, the defective product as well as the failure to compute.

The quantity, and so on, seriously affect the financial benefits of the venture. Upkeep workers wish that there is a means to advance the sensor failure.

Obtain reminded.

After years of expedition, there is a method to accurately diagnose whether the tons cell misbehaves or otherwise (abbreviated as.

" Sub-health") to enhance the campaign of upkeep as well as attain the purpose of "no failure" maintenance.


2. Sensations as well as concepts.

The tons cell involves self-controls such as auto mechanics, power, as well as chemistry. The reason for the mistake is complicated as well as it is tough to court. Formation in failing.

It is certainly hard to identify beforehand that the lots cell remains in a "sub-healthy" condition.

The mistakes of the load cell can be divided right into three classifications according to the concept: A, created by elastic body; B, caused by electrical shock and circuit.

的; C, triggered by the pasting process. Yet whatever type of failings will be mirrored via the unbalanced outcome.

The dimension of the zero point result of the tons cell is a representation of the quality of the production process as well as the quality of the style, and it is also a potential failure.

Among the most noticeable manifestations.

The zero factor outcome of the lots cell is also huge, which positions a potential threat to the integrity of the sensing unit. The change of zero factor will certainly likewise make.

The security of the sensing unit is not assured. It is discovered that the absolutely no point is also big during use, which must be caused by a malfunction. The long-term stability of the absolutely no point of the tons cell is a prerequisite technical index in the dependability and also stability of the sensing unit. These are the definitive understandings of the failure of the load cell during several years of work. On this basis, after expedition, it is located that the empty range result and also no-load output signal adjustments of the tons cell. Making use of tracking, evaluation, as well as surveillance approaches, it is feasible to grasp the pulse of the "health and wellness" of the tons cell, from the "modification amount". "Early as well as accurate medical diagnosis of the "wellness" problem of the sensing unit. At the same time, it additionally clarifies the output of the vacant range. The adjustment of the result of the empty scale is a concentrated reflection of 2 crucial technical signs of the tons cell no factor and linearity.

The tons cell remains in the "sub-healthy" problem. Both most common and also most delicate phenomena are both most delicate and also typical qualities: one is that the considering sign commonly transforms no during use, yet it can immediately return to zero without impacting the weighing. The 2nd is that when the common weight is loaded throughout the usage duration, there is commonly a slight over-tolerance, yet it can be restored to regular by readjusting the potentiometer. Among these phenomena indicates that there are "sub-healthy" sensing units in the range. Exactly how to find and identify?

1. Monitoring.

( 1) Surveillance of vacant ranges with lots cells. Under real considering problems, the load-bearing tool weighs the body (or load-bearing evaluating.

The structure) remains in place, and the mechanical components are in area. Measure the outcome value of each sensor of the scale under the excitation voltage, and modify it by position.

Good number, make a good document. This is the outcome value of the sensor's empty scale.

( 2) No-load monitoring of the lots cell. Under real weighing conditions, place each sensor of the range.

No-load state, measure the result worth of each sensing unit under the excitation voltage, code the number according to the position, and make a document. This is the transmission.

No-load outcome value of the sensor. At the very same time, the input impedance of the sensing unit is determined, and the result impedance and also the no-load outcome are contrasted with the technical requirements offered by the manufacturer at the manufacturing facility.

( 3) After loading as well as adjusting the scale with the basic weight, it is best to gauge each of the ranges under the condition of common weight loading.

Just the result value of the sensing unit, number it according to the position, make a document as well as indicate the conventional weight worth. This is the sensor's standard weight result.

worth.

2. Tracking.

Establish the moment space of the next dimension according to the area of usage, celebration, environment and also various other conditions. For every sensor.

The empty range result (or basic weight output), no-load output for tracking dimension.

( 1) Make use of the production gap to consistently gauge the empty scale outcome and also no-load result of each sensing unit of the scale.

The problems can measure the basic weight result of each sensor under the very same common weight. Make a record as well as contrast it with the original document.

( 2) When the sensing unit's vacant scale result (or conventional weight outcome) and also no-load result adjustment substantially, the monitoring time gap need to be.

Reduce, the tracking density need to be increased; when the result is steady for a very long time, the monitoring void can be suitably prolonged.

( 3) The same lots is contrasted by itself at different factors (areas) of the scale, as well as the tolerance is gone beyond, and also the empty scale of each sensing unit is gauged.

Output, no-load outcome, make a document, and also compare with the initial record.

This approach is frequently made use of under busy evaluating conditions to understand the operating status of the scale.

( 4) When the sensor's "sub-healthy" sensation appears, it is necessary to boost the output of the empty scale tracking each sensing unit (or.

Typical weight outcome) The measured thickness of no-load result, make a record, as well as contrast it with the initial document.

( 5) For electronic sensors, make use of the same method to go into the vacant range interior code worth, empty inner code worth, and basic weight interior code value.

Conduct tracking and tracking, and also make great documents.



The long-term stability of the no factor of the tons cell is a prerequisite technological index in the reliability as well as security of the sensing unit. On this basis, after exploration, it is found that the empty range output as well as no-load result signal changes of the lots cell. At the same time, it also explains the output of the vacant range. load cell shear beam kit of the output of the empty range is a concentrated reflection of two crucial technical indications of the lots cell no point and also linearity.

One of these phenomena suggests that there are "sub-healthy" sensors in the scale.

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