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Method for correcting an analogue amplifier output signal, amplifier module and measurement device

An amplifier, input signal technology, used in amplifiers, differential amplifiers, DC-coupled DC amplifiers, etc.

Active Publication Date: 2012-07-04
METTLER TOLEDO INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This type of procedure adds significantly to cost and makes the manufacturing process and product more expensive

Method used

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  • Method for correcting an analogue amplifier output signal, amplifier module and measurement device
  • Method for correcting an analogue amplifier output signal, amplifier module and measurement device
  • Method for correcting an analogue amplifier output signal, amplifier module and measurement device

Examples

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Embodiment Construction

[0061] exist figure 2 A measuring device 50 with a sensor 10 and a signal processing unit 20 is schematically illustrated in . All components are compatible with figure 1 Correspondingly, the timeout controller AS is shown with more specific details. The timeout controller AS includes a signal generator SG and an exclusive OR element EXOR. The signal generator signal S SG and switching signal S SW Signal input terminal sent to exclusive OR element EXOR. input value S SG , S SW Once but are no longer equal, the timeout signal S A To activate the switch contact SK 5 、SK 6 . This is where the signal generated by the signal generator S SG relative to the switching signal S SW The phase offset sets the phase duration, the timeout phase t 1 to t 2 , t 3 to t 4 , t 5 How to t... is generated. exist figure 2 All signals indicated in the following will be in the Figure 4 environment is explained in detail.

[0062] image 3 A measuring device 150 with a sensor...

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PUM

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Abstract

The invention provides a method for correcting the transmission errors of an analog amplifier, caused by a physically restricted function, when tracking a jump in the input signal of the amplifier caused by switching. In a measurement device which comprises at least a sensor and a signal treatment unit and an analog amplifier connected to the sensor, the signal treatment unit includes at least one modulator and / or multiplexer, the analog amplifier, and at least one processing stage continued to the analog amplifier in a circuit chain. The processing stage, by means of the switch disposed between the amplifier and the processing stage according to the time when a switching jump occurs, is separated from the amplifier during a predetermined timeout phase duration and is controlled by a time-out controller, and / or, according to the time when the switching jump occurs, the processing stage is blocked by the timeout controller during the predetermined timeout phase duration.

Description

technical field [0001] The invention relates to a method, an amplifier module and a measuring device in which a signal is amplified, transformed and sent to an output device in a signal processing unit. Background technique [0002] Analog amplifiers, in particular operational amplifiers and differential amplifiers, are used in signal processing components in which the output signals of eg temperature, humidity, force, or pressure sensors are converted and processed. In most cases, sensors and signal processing components are combined into so-called measuring devices and used in industrial environments. An important type of measuring equipment that places strict demands on signal processing components is force measuring equipment, especially gravimetric measuring equipment. [0003] Gravimetric measuring devices, such as thermoanalytical instruments, balances, moisture measuring instruments, etc., comprise force measuring cells based on different designs depending on the re...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01D3/00G01D3/028G01D3/036G01B7/16G01L1/22H03F3/45H03F3/217H03F1/30
CPCG01G3/147H03F2203/45138H03F2200/261H03F3/38H03F3/45475H03F3/45968H03F1/26H03F3/387
Inventor 西里尔·布赫丹尼尔·雷伯菲利普·R·奥利特
Owner METTLER TOLEDO INC