CN202126495U

CN202126495U - Iron core property comprehensive tester

Info

Publication number: CN202126495U
Application number: CN2011202245306U
Authority: CN
Inventors: 刘中阳
Original assignee: Individual
Current assignee: Individual
Priority date: 2011-06-29
Filing date: 2011-06-29
Publication date: 2012-01-25
Anticipated expiration: 2021-06-29

Abstract

The utility model discloses an iron core property comprehensive tester capable of quickly testing various electromagnetism property parameters of a closed loop type iron core before and after winding. The iron core property comprehensive tester mainly comprises an electronic frequency conversion voltage regulator, a magnet exciting coil, a single-chip microcomputer control panel and a testing circuit, a rotary controller, a liquid crystal display (LCD) and a panel type miniature rapid printer. The electronic frequency conversion voltage regulator is controlled by a single-chip microcomputer to output excitation signals with different frequencies. Data are accessed to an analog quantity input end through testing and transmitted to a central processing unit (CPU) for calculating and processing through analog to digital (A/D) conversion. Then testing results are provided, and the single-chip microcomputer can calculate no-load current of a winding under different rated voltage and rated turn numbers according to the testing results. All testing resulted can be displayed in real time through the LCD or printed on site through the miniature printer, and testing data stored in the tester can be uploaded to a computer through a serial communication port for writing a testing report. The iron core property comprehensive tester is very suitable for manufacturers producing iron cores, transformers, mutual inductors and the like.

Description

The core characteristics comprehensive tester

Technical field

The utility model relates to a kind of core characteristics comprehensive tester, particularly a kind of can the various closed loop iron cores of fast detecting the core characteristics comprehensive tester of various electromagnetic performance parameters before and after coiling.

Background technology

Annular core is little because of its loss; Efficient is high and obtained widespread usage, because iron core in process of production need be through a plurality of production links such as bakingout process, insulation processing, even if therefore same batch of material; The electromagnetic property of finished product iron core that also can't guarantee coiling is in full accord; Therefore, must detect every core characteristics before use, confirm the parameter such as the coiling number of turn and design power of products such as transformer, mutual inductor with this.

This practical new purpose provides a kind of core characteristics comprehensive tester; Its various electromagnetic property before not only can the coiling of fast detecting annular core; Can also measuring transformer, parameter such as the turn ratio after the coiling such as mutual inductor and no-load current; Can effectively grasp the various electric property parameters of annular core coiling front and back, thereby guarantee product quality.

Summary of the invention

This is practical newly realizes through mode once:

A kind of core characteristics comprehensive tester mainly comprises: frequency-variable electronic pressure regulator, field coil, singlechip control panel and metering circuit, Rotation Controllers, LCD LCD and the miniature rapid printer of panel type; By Single-chip Controlling frequency-variable electronic pressure regulator output different frequency excitation signal; Insert the analog quantity input end to data through detecting; Carry out computing through importing CPU into after the A/D conversion; And providing measurement result, single-chip microcomputer can be with the built-in computing formula of iron core measurement result substitution, and precomputes the no-load current of winding when the rated voltage and the specified number of turn; And all testing results all can be carried out field print through LCD demonstration in real time or through mini-printer, and serial communication port can be uploaded to the measurement data of tester storage inside in computer and carry out the editing examining report.

Have obviously advantage with present compared with techniques: electromagnetic property parameter 2, the measuring speed that 1, can detect the iron core winding front and back are fast, automatically accomplish testing.3, adopt the frequency-variable electronic field power supply, output power is big, measurement is accurate; 4, easy to operate, adopt Rotation Controllers to control, 5, powerful, can calculate the following no-load current of the different numbers of turn automatically.

Description of drawings

Fig. 1 is the host circuit synoptic diagram of the utility model.

Embodiment

In conjunction with accompanying drawing the utility model is done detailed description.

According to core characteristics comprehensive tester shown in Figure 1 by frequency-variable electronic pressure regulator A, field coil B, singlechip control panel and a metering circuit C, relay J 1, J2, J3, J4, Rotation Controllers D, LCD LCD E and the miniature rapid printer F of panel type; Serial communication interface J forms; Excitation signal by Single-chip Controlling frequency-variable electronic pressure regulator output different frequency; Through field coil B tested iron core is carried out the excitation test; Detect data and insert the analog quantity input end; Carry out computing through importing CPU into after the A/D conversion, and provide measurement result, single-chip microcomputer can calculate the no-load current of winding when the rated voltage and the specified number of turn according to this check result.

The basic functional principle of tester is described below: when measuring core characteristics; Earlier passing tested iron-core coil two ends to field coil B is connected with terminal 1,2 respectively; On the LCD display menu, select the iron core test event through Rotation Controllers D then, CPU pilot relay J1 and J2 open, and frequency-variable electronic pressure regulator A exports excitation signal through terminal 1,2 to field coil B simultaneously; Import CPU into after iron core detection data are changed through A/D and carry out computing; And providing measurement result, single-chip microcomputer can calculate the no-load current of winding under the different rated voltages and the specified number of turn automatically according to this result.

When the iron core winding after the coiling being carried out the measurement of no-load current or turn ratio; According to shown in Figure 2 tested winding and power take-off 3,4 are connected; Tested Secondary Winding is inserted Secondary Winding input end 5,6; Pilot relay J3 opens with J4 after selecting pilot project, CPU to obtain dependent instruction through Rotation Controllers D, and frequency-variable electronic pressure regulator A exports the test voltage of corresponding frequencies through terminal 3,4 simultaneously; Import CPU into after tested winding data is changed through A/D and carry out computing, and provide no-load current and number of turn ratio under the corresponding voltage.

The testing result of any measurement project can be carried out field print through the LCD demonstration or through mini-printer, and serial communication port J can be uploaded to the measurement data of tester storage inside in computer and carry out the editing examining report.

Claims

1. a core characteristics comprehensive tester is characterized in that: be made up of a frequency-variable electronic pressure regulator (A), field coil (B), singlechip control panel and metering circuit (C), relay (J1), (J2), (J3), (J4), Rotation Controllers (D), LCD LCD (E), a miniature rapid printer of panel type (F) and serial communication interface (J).