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Self-adaptive direct-current signal sampling circuit and sampling device

A DC signal and sampling circuit technology, applied in measuring devices, measuring current/voltage, measuring electrical variables, etc., can solve problems such as poor adaptability, slow response speed, short service life, etc., to improve sampling efficiency and response speed. Fast, long life effect

Active Publication Date: 2020-01-24
JINAN NEW GIGANANO LONG DISTANCE MEASURING & CONTROL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The common standard output signal of sensor has two kinds of 4-20mA and 1-5V commonly used, and the inventor finds, when current DC signal sampling circuit is designed, generally can only collect a kind of sensor signal of type, and adaptability is not strong; The current DC signal sampling circuit has the problems of slow response speed, short service life and high failure rate

Method used

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  • Self-adaptive direct-current signal sampling circuit and sampling device
  • Self-adaptive direct-current signal sampling circuit and sampling device

Examples

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Embodiment 1

[0035] Such as figure 1 As shown, an adaptive DC signal sampling circuit of this embodiment includes a voltage sampling circuit, a current sampling circuit, a function switching circuit and a main controller; the voltage sampling circuit and the current sampling circuit are connected in parallel, and the voltage sampling circuit Both ends of the current sampling circuit are connected with the data acquisition sensor;

[0036] The main controller is configured to: receive the signals output by the data acquisition sensor through the voltage sampling circuit and the current sampling circuit respectively and judge the type of the output signal of the data acquisition sensor; control the function switching circuit to enable according to the type of the output signal of the data acquisition sensor Voltage sampling circuit or current sampling circuit.

[0037] As an implementation, the self-adaptive DC signal sampling circuit also includes a pre-protection circuit, the pre-protecti...

Embodiment 2

[0061] This embodiment provides an adaptive DC signal sampling device, which can automatically adapt to the sampling of different output signals and improve sampling efficiency.

[0062] A kind of self-adaptive DC signal sampling device of this embodiment, it comprises such as figure 1 with figure 2 The adaptive DC signal sampling circuit shown.

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Abstract

The invention provides a self-adaptive direct-current signal sampling circuit and a sampling device. The self-adaptive direct-current signal sampling circuit comprises a voltage sampling circuit, a current sampling circuit, a function switching circuit and a main controller, wherein the voltage sampling circuit and the current sampling circuit are connected in parallel, and the two ends of the voltage sampling circuit and the two ends of the current sampling circuit are all connected with a data collection sensor; the main controller is configured to receive a signal output by the data collection sensor through the voltage sampling circuit and the current sampling circuit respectively and judge the type of the signal output by the data collection sensor; and the function switching circuitis controlled to enable the voltage sampling circuit or the current sampling circuit according to the type of the signal output by the data collection sensor.

Description

technical field [0001] The disclosure belongs to the field of signal sampling, and in particular relates to an adaptive DC signal sampling circuit and a sampling device. Background technique [0002] The statements in this section merely provide background information related to the present disclosure and do not necessarily constitute prior art. [0003] The common standard output signal of sensor has two kinds of 4-20mA and 1-5V commonly used, and the inventor finds, when current DC signal sampling circuit is designed, generally can only collect a kind of sensor signal of type, and adaptability is not strong; The current DC signal sampling circuit has the problems of slow response speed, short service life and high failure rate. Contents of the invention [0004] In order to solve the above problems, the first aspect of the present disclosure provides an adaptive DC signal sampling circuit, which can automatically adapt to sampling of different output signals and improve...

Claims

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Application Information

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IPC IPC(8): G01R19/00
CPCG01R19/00
Inventor 王祖天余民
Owner JINAN NEW GIGANANO LONG DISTANCE MEASURING & CONTROL