Touch screen coordinate calibration device

Abstract

The invention provides a touch screen coordinate calibration device which is used for calibrating a touch screen. The touch screen coordinate calibration device comprises a bracket, wherein the bracket is arranged above the touch screen; a plurality of touch pens are arranged on the bracket at intervals; a pen point of each touch pen can stretch to the touch screen; an elastic element is clamped between each touch pen and the bracket; a sliding rail is arranged above the touch pens and extends along the track direction of the touch pens; a sliding body is arranged in the sliding rail and slides along the track direction of the touch pens; when the sliding body is pressed against the top of one of the touch pens, the corresponding elastic element elastically shrinks, and the pen point of the corresponding touch pen stretches out and clicks the touch screen; and when the sliding body leaves from the top of the touch pen, the corresponding elastic element elastically stretches, and the pen point of the corresponding touch pen shrinks and keeps a distance from the touch screen. By changing the pressing state of the sliding body and the touch pens, the touch pens are guided to click the touch screen, so that the touch screen coordinate calibration device can operate efficiently and conveniently.

Description

【Technical field】 [0001] The invention relates to a coordinate calibration device, in particular to an efficient and convenient touch screen coordinate calibration device. 【Background technique】 [0002] Different from the mouse coordinate positioning method, the touch screen is an absolute coordinate system, where you want to choose, just click directly, which is fundamentally different from the relative positioning system. The characteristic of the absolute coordinate system is that each positioning coordinate has nothing to do with the previous positioning coordinates. The data of each touch is converted to the coordinates on the screen through calibration. No matter what the situation is, the output data of the coordinates of the touch screen at the same point is stable. of. However, for the same reasons as the technical principle, it cannot guarantee the same sampling data every time the same point is touched, and the absolute coordinate positioning cannot be guarantee...

AI Technical Summary

Problems solved by technology

However, due to the same technical principle, it cannot guarantee the same sampling data for each touch of the same point, and cannot guarantee absolute coordinate positioning, and the point is not accurate. This is the most feared problem of the touch screen: drift

In actual production, due to the inconsistency of the sensor and the inconsistency of the equipment assembly, there will be a certain deviation between the sensitivity and the preset parameters, which will affect the linearity or sensitivity of the detection.

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