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Approach for very early diagnosis of tons cell "sub-health".<br>
[Abstract] This write-up introduces a concept as well as method of very early and also precise medical diagnosis of the "sub-health" condition of load cells.

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

I. Intro.

With the continuous deepening of venture technical transformation, digital considering instruments have been used a growing number of extensively in procedure flow, process control, and also negotiation and also measurement. The resistance stress type tons cell (hereinafter described as the sensor) is a kind of metal flexible body as the force.

- Gauging tools with electric conversion function, and sensing units are the core components of electronic weighing instruments. Due to the inherent features of the sensing unit itself.

As well as in a complicated and harsh environment, its failings are defined by variety as well as complexity, as well as the failure price is additionally higher. Existing.

Replacing the sensing unit in the field judgment will certainly not just impact the regular production rhythm, but also create the wind, the heating system, the defective product and also the failure to compute.

The quantity, and so on, seriously affect the financial advantages of the enterprise. Maintenance personnel really hope that there is a way to advance the sensor failure.

Obtain advised.

After years of expedition, there is a means to accurately diagnose whether the tons cell is poor or otherwise (shortened as.

" Sub-health") to boost the effort of upkeep and achieve the function of "no failing" upkeep.

2. Sensations and concepts.

The tons cell entails disciplines such as auto mechanics, electricity, and chemistry. The reason of the mistake is complicated and also it is hard to court. Formation in failing.

It is undoubtedly challenging to detect ahead of time that the lots cell is in a "sub-healthy" problem.

The faults of the lots cell can be separated right into 3 groups according to the concept: A, brought on by flexible body; B, triggered by electric shock and also circuit.

的; C, triggered by the pasting procedure. But whatever kind of failures will certainly be mirrored with the unbalanced result.

The size of the absolutely no factor outcome of the load cell is a representation of the quality of the manufacturing procedure and also the top quality of the style, and it is additionally a prospective failure.

Among the most evident manifestations.

The no point outcome of the tons cell is as well large, which poses a possible threat to the dependability of the sensor. The modification of zero point will certainly likewise make.

The stability of the sensing unit is not guaranteed. It is discovered that the no factor is too large throughout usage, which have to be brought on by a malfunction. The long-lasting security of the absolutely no factor of the tons cell is a requirement technological index in the integrity and stability of the sensing unit. load cell stage are the conclusive understandings of the failing of the lots cell during many years of job. On this basis, after exploration, it is located that the vacant range output and no-load output signal modifications of the tons cell. Utilizing analysis, monitoring, as well as monitoring approaches, it is possible to understand the pulse of the "wellness" of the load cell, from the "modification quantity". "Early and precise medical diagnosis of the "health" problem of the sensing unit. At the same time, it additionally describes the result of the empty range. The modification of the result of the empty range is a focused representation of 2 vital technological signs of the lots cell zero factor and linearity.

The load cell remains in the "sub-healthy" problem. Both most usual as well as most delicate sensations are the 2 most usual and delicate qualities: one is that the weighing indicator frequently alters absolutely no throughout usage, yet it can instantly return to absolutely no without influencing the evaluating. The second is that when the common weight is filled during the usage duration, there is commonly a small over-tolerance, but it can be recovered to regular by readjusting the potentiometer. Among these phenomena shows that there are "sub-healthy" sensing units in the range. How to locate and identify?

1. Surveillance.

( 1) Monitoring of vacant scales with lots cells. Under actual evaluating conditions, the load-bearing gadget weighs the body (or load-bearing weighing.

The frame) is in area, and the mechanical components are in area. Measure the outcome value of each sensing unit of the range under the excitation voltage, and also edit it by placement.

Excellent number, make a good record. This is the output worth of the sensor's empty range.

( 2) No-load surveillance of the load cell. Under real evaluating conditions, place each sensor of the range.


No-load state, determine the result worth of each sensing unit under the excitation voltage, code the number according to the placement, as well as make a record. This is the transmission.

No-load outcome value of the sensing unit. At the exact same time, the input impedance of the sensing unit is gauged, and also the outcome impedance and also the no-load output are compared with the technical specs given by the manufacturer at the factory.

( 3) After calibrating the scale as well as loading with the basic weight, it is best to gauge each of the scales under the problem of conventional weight loading.

Just the outcome value of the sensor, number it according to the position, make a record and suggest the standard weight value. This is the sensing unit's standard weight outcome.

worth.

2. Tracking.

Figure out the moment void of the next dimension according to the place of use, event, environment and other conditions. For each sensor.

The vacant scale outcome (or common weight output), no-load result for tracking measurement.

( 1) Utilize the production void to frequently gauge the vacant scale outcome and no-load output of each sensing unit of the range.

The conditions can determine the common weight output of each sensing unit under the exact same common weight. Make a document as well as contrast it with the original document.

( 2) When the sensor's vacant range outcome (or standard weight result) and no-load result modification greatly, the monitoring time void ought to be.

Shorten, the tracking density ought to be increased; when the outcome is secure for a very long time, the tracking gap can be properly extended.

( 3) The exact same lots is compared on its own at various points (sections) of the scale, and the resistance is surpassed, and also the empty scale of each sensing unit is measured.

Result, no-load output, make a record, as well as contrast with the original record.

This approach is generally made use of under fast-paced evaluating problems to comprehend the operating status of the scale.

( 4) When the sensor's "sub-healthy" sensation shows up, it is necessary to enhance the outcome of the empty scale tracking each sensor (or.

Standard weight result) The gauged thickness of no-load outcome, make a record, and contrast it with the original document.

( 5) For digital sensing units, utilize the same approach to enter the empty range inner code worth, vacant interior code value, and also conventional weight inner code value.

Conduct monitoring as well as monitoring, and make excellent records.



The long-lasting security of the no point of the lots cell is a requirement technological index in the dependability and security of the sensor. On this basis, after expedition, it is located that the vacant scale result as well as no-load outcome signal changes of the tons cell. At the very same time, it likewise describes the outcome of the vacant scale. The modification of the result of the vacant scale is a focused reflection of two crucial technical indicators of the tons cell absolutely no factor as well as linearity.

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

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