Full-automatic tester for load box

A load box and tester technology, which is applied in the direction of instruments, measuring devices, and measuring electrical variables, can solve the problems of slow test speed, low measurement accuracy, and insufficient display digits, and achieve simple wiring, expanded range, and intuitive display Effect

Inactive Publication Date: 2011-08-03
JIANGSU FRONTIER ELECTRIC TECH +1
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  • Abstract
  • Description
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Problems solved by technology

[0003] In order to solve the problems of low measurement accuracy, insufficient

Method used

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  • Full-automatic tester for load box
  • Full-automatic tester for load box
  • Full-automatic tester for load box

Examples

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Example Embodiment

[0033] The present invention will be further described below in conjunction with the drawings.

[0034] As shown in the figure, the automatic load box tester includes a PC, DSP control module, AD sampling module, D / A conversion module, and numerical control linear power supply.

[0035] The upper PC mainly includes test management software and communication software. The test management software also includes the test man-machine interface, database module, communication module, MIS interface module, etc.

[0036] The human-computer interaction interface adopts the VS development system, which has the WINDOWS standard interface style and operation mode. For anyone who can use the WINDOWS system computer, he can quickly master the operation of the test.

[0037] The communication software adopts the CAN bus technology of the industrial field bus. CAN-bus (Controller Area Network) is the controller area network and is one of the most widely used open field buses in the world. As a remo...

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Abstract

The invention discloses a full-automatic tester for a load box, which comprises a personal computer (PC) and is characterized by also comprising a digital signal processor (DSP) control module, an analog digital (AD) sampling module, a digital/analog (D/A) conversion module and a numerical control linear power supply. The PC is communicated with the DSP control module through a controller area network (CAN) bus, the DSP control module is connected with the D/A conversion module, the D/A conversion module is connected with the numerical control linear power supply, the numerical control linear power supply and a load box to be tested are connected with a stably-transmitting voltage signal, the load box to be tested is connected with the AD sampling module, and the AD sampling module is connected with the DSP control module. By the full-automatic tester, the problems of lower measuring precision, insufficient display digits and slow testing speed of a calibration device of the load box in the prior art are solved. The invention provides a device which is capable of realizing high-precision automatic test of the load box and has the functions of report storage, issuing, printing and the like.

Description

technical field [0001] The invention relates to an automatic detection device for load box testing related to electric power metering, which can detect whether the error precision grades of the current load box and the voltage load box comply with relevant specifications, and belongs to the technical field of power system metering and detection. Background technique [0002] At present, the efficiency of calibrator is relatively low in the verification process of load box, and the wiring is relatively complicated. The accuracy and display digits of the original calibrator are insufficient. There are two methods for the detection of the original load box: one is to use the whole inspection platform of the electric transformer calibrator. This method has high measurement accuracy and a small measurement range. It is relatively wide, but the test speed is slow, and the electronic transformer calibration bench generally does not have the function of measuring the load box, espec...

Claims

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Application Information

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IPC IPC(8): G01R27/08G08C19/00
Inventor 包玉树高山黄磊李军王成亮包东桥李澄罗传仙陈威丁伟许本化庞珊珊
Owner JIANGSU FRONTIER ELECTRIC TECH
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