General Elements of M→α♣anufacturing Electronic Scales by Electroni≈±c Scale Manufacturers

The electronic scale manufacturer transm®♦≥♦its the gravity of the object δ‌★₩to the weighing sensor throuε§&gh the weighing platform, which makes t♣₩¶he elastomer of the s>¥πensor deform, and outputs the voltage signal unde÷₽αr the excitation voltage. The signal ελλis amplified by a linea↕™r amplifier, and then c‌λonverted into a digital signal by the e"♠lectronic scale manufacturer. The quality of≤>÷♦ the quality signal is directly disp→♠• layed after the microprocessor‍✔  has processed it. Measurement. Weighing errλ♥£★ors of electronic scales mainly come fσ‌♣δrom different components; electronic sca¶γ>les manufacturers need electronic scal✘↓™←es weighing sensors how to¶•σ≠ choose. Today we analyze the application e☆₽∑φnvironment of electronic scales and♣± sensor parameters.

1. Select the parameters or types of weighing ↑αsensors according to the personnel kn♠∞owledge of the elect€γ∏ronic scale manufacturer.

The manufacturer generally chooses a©∑♦ ccording to the accuracy grade of the ele‍"≤>ctronic scale sensor. The accu∞↓racy of the sensor can meet the ma•φtching of the input ≠✘↑signal of the electronic scale instrument, the →πinternal amplificatio>€±n circuit and the A/₽αD conversion circuit of the electronic scale.

2. The manufacturer chooses©♥ the sensor input sensitivity accordi∞αng to the electronic scale.

It is more than or equal to the input sensitivity♥​∞ required by the manufacturer of electroni•  ☆c scales. Accurately ®♦ →speaking, it is a section of weig☆®₩ hing range with the best linearity of the ♠αweighing sensor. The manufacturer of electronic★↕© scales should only use 2/→×"3 of the full range. In a←±φddition, the typical electrical sensitivity of tε★he weighing sensor is 2 mV/®γV.

According to the principle of electronic wεα←™eighing, the manufacturer →<uses the deformation o‌≤φφf elastomer under the action of gravi≥•±ty to measure the value of gravity. The result of≠​ weighing reflects the magnitude ♦ of gravity on a certain mass of objects.π↔♠♣ Therefore, different accelα<€eration values of gravity in different places✔∑ will cause errors when the ind↑αication values of the same scale are different b↕≥etween two places.

Electronic scale manufacturer can noεγ‌t test the error of electronic sc® ale:

In addition to the above errors, the inaccuracy ​©£of the measurement by the electronic₹✔÷ scale manufacturer will a₩®lso affect the accuracy of the measu•πrement. According to the prin®♦ciple of mechanics, weig®₩hing can be divided into ¶ ✘dynamic effect weighing by"☆  force and static effec‍§€↕t weighing by force. The manufacturer makes £ use of the static field  •‍effect to weigh the electroni•Ω♠•c scale. The static ♣₹® effect weighing (also known as gravity♥α€ deformation method weigh&•ing) is to measure the gravity valuα±e by using the deformatio✔✘n or internal stress of the‌♥♥ elastomer under the action of gravi× ♥ty. Because the manuf&$acturer of electronic scales uses gravity t÷ o calibrate, and the result is wei≤π≠ght, if the acceleration value of gravity vari©λes from place to place, the indication₽ε' value of the same scaleαφ will be different between two places. The f↑&inal measurement results are related®  to the gravitational accel• ₩≠eration.

Speed Processing Method of Symmetrical Weight fo≠£÷r Electronic Scale Maσ✔εnufacturers

1. The electronic scales themselves design softwa ♥☆★re to compensate gravity. For example,₽ ∑≠ RS series electronic scales manufactured by ↕​RESEE Electronic Scales Factory can dir☆∏ectly input the gravity ac×σ≠↔celeration of the user's site, which λ±can be automatically processed by β‍€ the chip and calibr&​ated in different places.

2. The manufacturer sets a group oδ₩f binary switches by th®ελe electronic scale itself, changes the amp♣•→lification factor by changing the state of the sw₹≠​itch, corrects the error §♦εcaused by the change of gravity acceleration§♥, and adjusts it by potentiome£ ter.

3. The manufacturer of electronic scales can conv☆α₽₹ert the difference of÷&↕ gravity acceleration between local and elect"®‌♥ronic scales.

4. After using the automatic electronic sca' ¥'les to the ground, the manufacturer places a cert✔≈™ain quality standard weight on t£¥$he electronic scales, ent"↑♥®ers the operating system t☆™‌hrough the keyboard, and obtains the nominal va•>lue of the weight through micro-processi↓∑≠ng.

Now electronic scales basically use automatiφβσc calibration method, calibration i≠"≠s simple and clear. Of course≠✔ , there will be other facto↓↕≥rs, such as the environment, such a λs air humidity, magne↕×÷tic field, and so onπ✔β₹; factors affect the accuracy of t☆§he measurement of electronic scales, 'Ω↓♥I will continue to study in dept$π±h in future papers.

For example, the weighing reaction speed of the e♠'≤•lectronic scale is fa σ©<st, there is no conta≤→εct and the service life is long.

Display and input devices can also be sel±≤ected arbitrarily. In ±₽∑πa word, using smart chips with better ₹↑adaptability and con✔☆☆↓trol can improve the measurement accuracy of ¶ electronic scales. I will devote more efforts t∏"σ<o the development of this area inδσ'₽ the future. With the in-depth understε©↑anding of the working p​>¶rinciple of electronic scales and♦"γ the help of various measuring method®→₽Ωs, manufacturers analyze €‍₹the existing ways of errors of electro€φ€nic scales, which are closely relate←£₹d to their components, f<δα★ind out the sources of err€™"δors of the four-cornered ecc®↓ ↓entric load, weighing, discriminatio✘×πn and repeatability of elec'☆ tronic scales, and make further analysis and✘₹α¥ efforts to find out the sources '✔β♣of errors. Find a solution to reduce the error o♦§$Ωf electronic scale.