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Analogue magnetic field controlling method and apparatus thereof

A control device and magnetic field technology, applied in image duplicators, image reproducers using cathode camera tubes, etc., can solve problems such as difficult to see images, easy to produce human errors, labor-intensive and time-consuming, etc., to improve the reliability of quality , the earth's magnetic field is stable, and the voltage is reliable

Inactive Publication Date: 2005-07-20
SHENZHEN SKYWORTH RGB ELECTRONICS CO LTD
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Problems solved by technology

But once a specific simulated magnetic field is formed, the object under test must be artificially rotated to detect the display effect of the object under test relative to different magnetic field directions
Moreover, when the direction of the measured object changes, it is difficult for only one inspector to see the image clearly, and two people are required to cooperate
In this way, it is not only labor-intensive and time-consuming, but also prone to human error

Method used

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  • Analogue magnetic field controlling method and apparatus thereof
  • Analogue magnetic field controlling method and apparatus thereof
  • Analogue magnetic field controlling method and apparatus thereof

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Embodiment Construction

[0020] Combine below Figure 1a , Figure 1b and Figure 2a to Figure 2c The coil assembly schematic diagram in the figure illustrates the analog magnetic field adjustment control method of the present invention, and takes a single-chip microcomputer as an example of an analog magnetic field adjustment control device to illustrate its working principle. The magnetic field is a vector with magnitude and direction, and any number of vectors can be synthesized into one vector. The simulated geomagnetic vector is the vector sum of the actual geomagnetic field and the artificially generated magnetic field. If the TV set to be tested is placed in the space surrounded by three groups (six) coils, and then voltage is applied to the X-axis, Y-axis and Z-axis coil groups 15, 25, 35, it will produce and the magnetic fields in the three directions of the Z axis. Combined with the actual geomagnetism of the test location, the simulated geomagnetism of any size and direction can be obtai...

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Abstract

The invention relates to a method of simulating object geomagnetic field for an object to be detected, including the steps: (1) generating a magnetic field Q3 by electromagnetic, synthesizing Q3 and an geomagnetic field Q2 in the local place to be equivalent to an geomagnetic field Q1 of object place; (2) placing the object to be detected in the synthetic magnetic field formed in step 1, detecting the effect of the synthetic magnetic field on the object to be detected in the direction position A; and (3) as wanting to detect the effect in some direction position B, maintaining the object fixed, and by changing the magnitude and direction of the magnetic filed Q3, making the magnetic field components of a magnetic filed synthesized of the field Q2 and Q3 in the directions of X, Y and Z axes equal to those of the geomagnetic filed Q1 in the directions of original X, Y and Z axes after the Q1 rotates at rotating angles (theta, beta and gama), where the rotating angles (theta, beta and gama) are a rotating angle from the direction position B and to the direction position A. Besides, the invention discloses a simulated geomagnetic field regulating and controlling device.

Description

【Field of Invention】 [0001] The invention relates to a method for controlling a simulated magnetic field and a device thereof, in particular to a method for adjusting and controlling a simulated earth's magnetic field and a device thereof. 【Background technique】 [0002] Currently, in the TV production process, an analog magnetic field must be set first. This is because the color picture tube, the core of the TV, is greatly affected by the earth's magnetic field, and different earth's magnetic field will have different effects on the image and raster (such as line center, color purity, etc.) of the TV. Therefore, as the magnetic field of the TV sales area is different, the TV factory must first set a simulated magnetic field on the production line during production to simulate the local geomagnetic intensity in the export area, so that the perfect TV can be adjusted. [0003] The application number is 88213084.6, and a Chinese utility model published on April 26, 1989 discl...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N9/29
Inventor 卓成钰吴伟杨军治
Owner SHENZHEN SKYWORTH RGB ELECTRONICS CO LTD
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