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Ultrasonic wave/infrared combined locating device and locating method thereof

A positioning method, ultrasonic technology, which is applied in the field of combining ultrasonic positioning and infrared, can solve problems such as complex structures, and achieve the effects of wide application range, low cost, and accurate positioning

Inactive Publication Date: 2012-07-11
GUANGDONG VTRON TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Whether it is figure 1 The traditional infrared positioning method shown is still the infrared positioning method disclosed in the patent with the notification number CN 101441543. Both of these methods require a relatively large number of infrared emitting tubes and infrared receiving tubes, and the structure is relatively complicated.

Method used

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  • Ultrasonic wave/infrared combined locating device and locating method thereof
  • Ultrasonic wave/infrared combined locating device and locating method thereof
  • Ultrasonic wave/infrared combined locating device and locating method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0030] A positioning device combining ultrasonic and infrared, such as figure 2 As shown, it includes a touch screen and a touch pen, wherein a microprocessor, an infrared emitting tube, an infrared receiving tube and an ultrasonic receiver are installed on the touch screen, and an ultrasonic transmitter is installed on the touch pen; The infrared transmitting tube, the infrared receiving tube and the ultrasonic receiver are signal-connected.

[0031] The touch screen is rectangular, the infrared emitting tube is installed on the upper frame of the touch screen, and the infrared receiving tube is installed on the lower frame of the touch screen.

[0032] The infrared rays emitted by the infrared emitting tube are parallel to the Y axis, and the infrared rays received by the infrared receiving tube are parallel to the Y axis. The coordinate system is established with the bottom left corner of the touch screen as the coordinate origin.

[0033] There is a single ultrasonic re...

Embodiment 2

[0045] A positioning device combining ultrasonic and infrared, such as Figure 4 As shown, it includes a touch screen and a touch pen, wherein a microprocessor, an infrared emitting tube, an infrared receiving tube and an ultrasonic receiver are installed on the touch screen, and an ultrasonic transmitter is installed on the touch pen; The infrared transmitting tube, the infrared receiving tube and the ultrasonic receiver are signal-connected.

[0046] The touch screen is rectangular, the infrared receiving tube is installed on the upper frame and the right frame of the touch screen, and the infrared emitting tube is installed on the lower frame and the left frame of the touch screen.

[0047] The infrared rays emitted by the infrared emitting tube form an acute angle with the longitudinal Y axis or the transverse X axis, and the included angle is 45 degrees. The coordinate system is established with the bottom left corner of the touch screen as the coordinate origin.

[004...

Embodiment 3

[0058] A positioning device combining ultrasonic and infrared, such as Figure 5 As shown, it includes a touch screen and a touch pen, wherein a microprocessor, an infrared emitting tube, an infrared receiving tube and an ultrasonic receiver are installed on the touch screen, and an ultrasonic transmitter is installed on the touch pen; The infrared transmitting tube, the infrared receiving tube and the ultrasonic receiver are signal-connected.

[0059] The touch screen is rectangular, the infrared emitting tube is installed on the upper frame of the touch screen, and the infrared receiving tube is installed on the lower frame of the touch screen.

[0060] The infrared rays emitted by the infrared emitting tube are parallel to the Y axis, and the infrared rays received by the infrared receiving tube are parallel to the Y axis. The coordinate system is established with the bottom left corner of the touch screen as the coordinate origin.

[0061] There are two ultrasonic receiv...

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PUM

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Abstract

The invention discloses an ultrasonic wave / infrared combined locating device which comprises a touch screen and a touch pen, wherein the touch screen is provided with a microprocessor, an infrared emission tube, an infrared receiving tube and an ultrasonic wave receiver, and the touch pen is provided with an ultrasonic wave transmitter; and the microprocessor respectively forms signal connection with the infrared emission tube, the infrared receiving tube and the ultrasonic wave receiver. The invention also discloses an ultrasonic wave / infrared combined locating method which comprises the following steps: S1, when touching the touch screen, the ultrasonic wave transmitter sends out ultrasonic waves; S2, the ultrasonic wave receiver determines the distance S0 from the touch point to the ultrasonic wave receiver; S3, the infrared emission tube sends out an infrared ray to the infrared receiving tube and detects the X-axis coordinate X0 of the touch point; and S4, the microprocessor calculates the Y-axis coordinate of the touch point so as to finish the locating operation, and returning to S1. The invention has the advantages of accurate locating, simple structure, low cost and the like.

Description

technical field [0001] The present invention relates to the technical field of combination of ultrasonic positioning and infrared, in particular to a positioning device and a positioning method combining ultrasonic and infrared, which are especially applied to electronic display devices or other writing planes to realize writing board functions and intelligent input. Background technique [0002] The basic principle of the infrared touch screen products currently on the market is: in the absence of touch, the infrared rays emitted by the infrared emitting tube pass through the display area to reach the infrared receiving tube, and the infrared receiving tube receives the infrared rays and converts them into usable electrical signals; In the case of a touch, the position of the touch point is calculated by detecting that the infrared grid in the display area is blocked by an obstacle. Existing infrared positioning technology, such as figure 1 Shown: Infrared rays are emitted...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F3/042G06F3/043G06F3/033G06F3/0354
Inventor 白宝国曾昭兴
Owner GUANGDONG VTRON TECH CO LTD
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