Dynamic property test analysis system for DC hybrid contactor reliable life experiment

A technology of dynamic characteristics and test analysis, applied in circuit breaker testing, instruments, measuring electricity, etc., can solve the problems of incomplete and inaccurate data collection, inability to collect and transmit data in real time, etc., to achieve full automation and storage. Manage and improve the effect of precision

Inactive Publication Date: 2010-01-06
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0013] In order to solve the problem of incomplete and inaccurate data collection and inability to collect and transmit data in real-time in the test device of the existing contactor reliability life test, the present invention provides a DC hybrid contactor reliability life test Experimental dynamic characteristic test and analysis system

Method used

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  • Dynamic property test analysis system for DC hybrid contactor reliable life experiment
  • Dynamic property test analysis system for DC hybrid contactor reliable life experiment

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specific Embodiment approach 1

[0025] Specific implementation mode one: the following combination figure 1 Describe this embodiment in detail, and this embodiment includes a front-end processing module 1: an analog signal for generating various parameters;

[0026] Data acquisition module 2: used to collect the analog signal generated by the front-end processing module, and convert the analog signal into a digital signal;

[0027] Data transmission module 3: consists of core control and data transmission modules, controls the data acquisition module, receives the data transmitted by the data acquisition module, and transmits the data;

[0028] Host computer 4: receive the data transmitted by the data transmission module, and perform analysis and processing of software design;

[0029] Liquid crystal display and keyboard 5: The liquid crystal display realizes real-time refresh of the current collected data, and can display abnormal data; set the frequency of collection and the time of experiment through key...

specific Embodiment approach 2

[0031] Specific implementation mode two: the following combination figure 2 Describe this embodiment in detail. The difference between this embodiment and the first embodiment is that the front-end processing module 1 is composed of a current sensor 1-1, a voltage sensor 1-2, a filter circuit 1-3 and a temperature sensor 1-4. 1-1 and the output end of the voltage sensor 1-2 are connected to the input end of the filter circuit 1-3, and other components and connections are the same as those in the first embodiment. The current and voltage of the coil and contacts of the DC hybrid contactor are collected by the current sensor and the voltage sensor. For the data of the current sensor, it is converted into a unified voltage signal with a precision resistor. All the collected voltage signals are filtered within a certain frequency range through the filter circuit to remove part of the interference components, and the signals are provided to the data acquisition module.

specific Embodiment approach 3

[0032] Specific implementation mode three: the following combination figure 2 Specifically illustrate this embodiment, the difference between this embodiment and specific embodiment two is: data acquisition module 2 is made up of analog switch chip U5, AD conversion chip U4, latch circuit 2-1, FIFO storage chip U2 and CPLD chip U3, The input terminal of the analog switch chip U5 is connected to the output terminal of the front-end processing module 1, the output terminal OUT of the analog switch chip U5 is connected to the analog signal input terminal AN1 of the AD conversion chip U4, and the address bus A0-A2 of the analog switch chip U5 is connected to The first IO bus IO26-IO28 of the CPLD chip U3, the output terminal BIT1-BIT12 of the AD conversion chip U4 is connected to the input terminal of the latch circuit 2-1, and the output terminal of the latch circuit 2-1 is connected to the input terminal of the FIFO memory chip U2 D0-D7, the control signal terminal HF of the FI...

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Abstract

The DC mixed contactor reliability lifetime experiment dynamic feature testing analysis system relates to the DC mixed contactor reliability lifetime experiment dynamic feature testing analysis device, in order to solve the problem of the existing contactor reliability lifetime experiment testing device that the experimental data is incomplete acquisition, inaccurate, and unable to collect and transmit real-time for the data. The invention includes front-end processing module, data acquisition module, data transmission module, upper position computer and LCD display and keyboard, and the signal output of the front-end processing module connecting with the signal input of the data acquisition module, the data output of the data acquisition module connecting with the data input of the data transmission module, the data transmission end of the data transmission module connecting with the upper position computer and LCD display and keyboard. The invention achieves the full automation of the experiment, improves the precision of data analysis; it can completely and fully analyze the data.

Description

technical field [0001] The invention relates to a dynamic characteristic test and analysis device for a reliability life experiment of a DC hybrid contactor. Background technique [0002] The contactor is a control element with a large quantity and a wide range. It is suitable for frequent switching on and off of AC and DC main circuits and large-capacity control circuits. It is also widely used in industrial control, agriculture, and transportation. Its reliability and life directly affect the reliability and safety of the entire system. [0003] The life of a contactor is mainly determined by its electrical life. Because there is arcing phenomenon in the breaking process of mechanical contacts, electrical wear is inevitable, and the greater the power, the more serious the electrical wear. Therefore, the quality of the arc extinguishing facilities of the contactor will have a great impact on its reliability and even the overall economic cost. [0004] Experiments have fo...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01R31/00G01R31/327
Inventor 翟国富任万滨任立俞洋余铁辉周慧德
Owner HARBIN INST OF TECH
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