Sampling device

A technology of sampling device and sampling unit, which is applied in the direction of output power conversion device, digital measurement technology for measurement, instruments, etc., can solve the problem of low stability of output voltage of power supply and sampling reference circuit, and difficulty in guaranteeing the accuracy of sampling signal and other problems, to achieve the effect of good load transient response performance, low quiescent current, and high precision

Inactive Publication Date: 2016-06-22
STATE GRID SHANDONG ELECTRIC POWER +1
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] Therefore, the technical problem to be solved by the present invention is that the power supply of the existing sampling device and the stability of the output voltage of the sampling reference circuit are not high, so that the accuracy of the sampling signal input to the processor is difficult to guarantee

Method used

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Embodiment 1

[0034] Such as figure 1 As shown, the present embodiment provides a sampling device, comprising:

[0035] Sampling unit 1, collecting the current signal and / or voltage signal of the main circuit;

[0036] The processor unit 2 receives and processes the current signal and / or voltage signal collected by the sampling unit 1, and sends corresponding sampling data, program data and start-up operation data;

[0037] The storage unit 3 receives and stores the sampling data, program data and start-up operation data transmitted by the processor unit 2;

[0038] The power supply unit 4 provides electric energy for the sampling unit 1, the processor unit 2 and the storage unit;

[0039] The power supply unit 4 includes a main power supply circuit 41 and a sampling reference circuit 42. The main power supply circuit 41 includes a low-dropout voltage regulator 412, a first processing circuit 411 connected to the input end of the low-dropout voltage regulator 412, and a first processing c...

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Abstract

The present invention provides a sampling device. The sampling device comprises: a sampling unit configured to collect current signals and / or voltage signals of a main circuit; a processor unit configured to receive the current signals and / or voltage signals collected by the sampling unit; a storage unit configured to receive sampling data and program data transmitted by the processor unit, and start and store operation data; a power supply unit configured to supply electric energy to the sampling unit, the processor unit and the storage unit; the power supply unit includes a main power circuit and a sampling reference circuit, and the main power circuit includes a low dropout regulator, a first processing circuit connected with the input end of the low dropout regulator and a second processing circuit connected with the output end of the low dropout regulator; and the sampling reference circuit includes a band-gap reference voltage source chip, a third processing circuit connected with the band-gap reference voltage source chip and a fourth processing circuit connected with the band-gap reference voltage source chip. The accuracy of the sampling device is guaranteed due to the high stability of the output voltage of a main power circuit and a sampling reference circuit.

Description

technical field [0001] The invention relates to the technical field of electrical signal sampling, in particular to a sampling device. Background technique [0002] Electrical signal sampling is to convert an analog current signal or analog voltage signal that is continuous in time and amplitude into a discrete analog signal that is discrete in time (there is a fixed interval in time) but still continuous in amplitude under the action of the sampling pulse. Signal. [0003] In the microcomputer control device, the electrical signal acquisition module is often used to convert the analog electrical signal into a digital signal that the microprocessor can recognize, so as to make corresponding control responses according to the current and voltage conditions in the main circuit. Therefore, the accuracy of the sampling signal is very important, which directly affects the judgment and subsequent actions of the microprocessor. In addition to the reliability of the sampling circu...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R19/25H02M3/00
CPCG01R19/25H02M3/00
Inventor 于乔王奉冲汤磊康正
Owner STATE GRID SHANDONG ELECTRIC POWER
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