Electronic card filtering data collection circuit

A technology of data acquisition circuit and electronic card, which is applied in the field of card acceptance system, can solve the problems of large offset voltage, low acquisition accuracy and tracking speed, and affect the popularization and application of acceptance system, so as to improve accuracy, high acquisition and maintenance accuracy, Fast Tracking Effects

Inactive Publication Date: 2017-01-04
CHENGDU CALABAR INFORMATION TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

At present, the data acquisition circuit equipped with mobile terminals has a large offset voltage, low acquisition accur

Method used

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  • Electronic card filtering data collection circuit

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Embodiment

[0019] Such as figure 1 As shown, an electronic card filter data acquisition circuit provided in this embodiment includes a first amplifier A1, a second amplifier A2, a signal controller UK, a first capacitor C1, a feedback resistor R1, a first switch K1, and a second switch K2, the first regulated power supply E1 and the second regulated power supply E2; the positive pole of the first regulated power supply E1 is connected to the same input terminal of the first amplifier A1, the negative pole of the first regulated power supply E1 is connected to one end of the inductance L1, and the inductance L1 The other end is used as the signal input end of this circuit; one end of the second capacitor C2 is connected to the line between the inductance L1 and the negative pole of the first regulated power supply E1, and the other end is grounded; the output end of the first amplifier A1 passes through the second switch K2 Connected to the inverting input terminal, the output terminal of...

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Abstract

The invention discloses an electronic card filtering data collection circuit comprising a first amplifier, a second amplifier, a first capacitor, a feedback resistor, a first switch and a second switch, wherein an output end of the first amplifier is connected with a reverse input end of the first amplifier through the second switch, and the output end of the first amplifier is connected with a homodromous input end of the second amplifier through the first switch; one end of the feedback resistor is connected with the reverse input end of the first amplifier, and the other end of the feedback resistor is connected with the reverse input end of the second amplifier and the output end of the second amplifier at the same time; and one end of the first capacitor is connected between the first switch and the homodromous input end of the second amplifier, and the other end of the first capacitor is grounded. The circuit disclosed by the invention is a full feedback circuit, an output voltage is directly compared with an input voltage, if the output voltage is not equal to the input voltage, the difference is amplified by the first amplifier, and the first capacitor is quickly charged, so that the tracking speed is high.

Description

[0001] The invention relates to a card acceptance system, and in more detail, to an electronic acceptance card data acquisition circuit. Background technique [0002] At present, all walks of life in the new era are developing rapidly, and the management requirements and acceptance requirements for various data are getting higher and higher. In order to adapt to this leap-forward development, it is necessary to improve the acceptance work methods and increase the acceptance efficiency. In order to make The quality monitoring work in the process of item acceptance is more standardized, orderly, and efficient, so that it can be delivered to relevant departments with higher quality. The structured acceptance card and the electronic content have become an inevitable trend, so that the acceptance personnel only need to Carrying a specific mobile terminal device can complete all the inspection work. [0003] The existing acceptance cards for military supplies are basically paper-bas...

Claims

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Application Information

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IPC IPC(8): H03F3/68H03H7/09
CPCH03F3/68H03H7/09
Inventor 朱焰冰
Owner CHENGDU CALABAR INFORMATION TECH
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