Comprehensive measurement instrument for frequency changer

A technology that integrates measuring instruments and frequency converters, applied in the field of measuring instruments, can solve the problems of high failure rate, inability to cover, and high repair rate of frequency converters, achieving efficient and rapid testing, easy control and statistics, and small size. Effect

Active Publication Date: 2013-11-27
嘉兴君宏光学有限公司
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  • Abstract
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Problems solved by technology

Before the inverter leaves the factory, a series of functional tests must be carried out. The existing manual testing of some manufacturers cannot meet their requirements

Method used

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  • Comprehensive measurement instrument for frequency changer
  • Comprehensive measurement instrument for frequency changer
  • Comprehensive measurement instrument for frequency changer

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Embodiment Construction

[0035] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0036] see figure 1 , which is a schematic diagram of the module structure of the frequency converter comprehensive measuring instrument provided by the preferred embodiment of the present invention. The frequency converter comprehensive measuring instrument includes a power supply module 1, a minimum system module 2 of a single chip microcomputer, a matrix keyboard module 3 (in this embodiment, a 4*4A / D matrix keyboard is used), a liquid crystal display module 4, and a communication module 5 (in this embodiment Using RS485 communication), analog control module 6, terminal control module 7.

[00...

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Abstract

The invention discloses a comprehensive measurement instrument for a frequency changer. The comprehensive measurement instrument for the frequency changer is used for testing all kinds of functions of a frequency changer to be tested and comprises a power module, a single chip microcomputer minimum system module, a matrix keyboard module, a liquid crystal display module, a communication module, an analog quantity control module and a terminal control module. The comprehensive measurement instrument for the frequency changer uses an ATmegal16 single chip microcomputer as a main control chip, mainly controls the testing mode through the matrix keyboard module, displays data through the liquid crystal display module, adjusts the size of analog quantity (0-10v voltages and 1-20mA currents) through the analog quantity control module, and can converts serial port signals into parallel port signals through the terminal control module (adopting a 74HV595 chip), and thus IO resources of the single chip microcomputer are saved. According to the comprehensive measurement instrument for the frequency changer, working staff can test all the functions of the frequency changer to be tested conveniently and quickly, testing and production efficiency of the frequency changer is improved, and the repair rate of the frequency changer is reduced.

Description

technical field [0001] The invention relates to a measuring instrument, in particular to a frequency converter comprehensive measuring instrument. Background technique [0002] The frequency converter is a power control device that uses power electronics technology and microelectronics technology to control the running speed of the AC motor by changing the frequency of the motor's working power supply. With the popularity of frequency converters, the demand for frequency converters is also increasing. Many frequency converter manufacturers hope to improve the production and testing efficiency of frequency converters. Before the inverter leaves the factory, a series of functional tests must be carried out. The existing manual testing of some manufacturers cannot meet their requirements, and more testing personnel and equipment are required to achieve this purpose. Specification testing has resulted in a high failure rate of the inverter, and the repair rate has remained high...

Claims

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Application Information

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IPC IPC(8): G01R31/00
Inventor 何来传
Owner 嘉兴君宏光学有限公司
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