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Laser radar based man-machine interaction system

A laser radar and human-computer interaction technology, applied in the field of human-computer interaction, can solve the problems of limited detection capacity, limited laser radar transmitter volume and power, laser radar receiver sensitivity, and decreased positioning accuracy, so as to achieve the goal of expanding the detection capacity Effect

Inactive Publication Date: 2016-02-17
ZHEJIANG UNIV OF TECH
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

However, limited by the size and power of the laser radar transmitter and the sensitivity of the laser radar receiver, the effective detection radius is only 3m, and the formed scanning surface is a semicircle with a radius of 3m, and the positioning accuracy of the area far away from the detection device will decrease. limited detection

Method used

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  • Laser radar based man-machine interaction system
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  • Laser radar based man-machine interaction system

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Embodiment Construction

[0022] figure 1 It is a schematic diagram of the existing lidar human-computer interaction system. A laser radar human-computer interaction system in the prior art generally includes a laser radar detection device 1 , a control host 2 and a display screen 3 , wherein the laser radar detection device 1 is connected to the control host 2 .

[0023] The laser radar detection device 1 forms a radial laser scanning surface 11 in front of the display screen 3, detects the blocking information of the laser light by the user's fingers or other objects used to determine the polar coordinate information of the touch point 12, and transmits the polar coordinate information to the control panel. Host 2. The control host 2 calculates the spatial position of the touch point 12 according to the polar coordinate information of the touch point 12 and the spatial position information of the lidar detection device 1, and judges whether the display content needs to be updated according to the sp...

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Abstract

The invention discloses a laser radar based man-machine interaction system. The system comprises at least two laser radar detection apparatuses, a control host and a display screen, wherein the at least two laser radar detection apparatuses are connected with the control host; the laser radar detection apparatuses form a radial laser scanning surface in front of the display screen, detect a touch action on the scanning surface and position polar coordinate information of a touch point; and the control host calculates a spatial position of the touch point according to the polar coordinate information of the touch point and spatial position information of the corresponding laser radar detection apparatus. Therefore, the system can solve the problem of limited detection quantity in an existing laser radar touch technology.

Description

technical field [0001] The present invention relates to human-computer interaction technology, in particular to a laser radar-based human-computer interaction technology. Background technique [0002] The traditional touch screen technologies are resistive screen, capacitive screen and surface acoustic wave screen. Generally, it can meet the size as large as the size of the TV screen. The screens in exhibition halls and other occasions, such as plasma screens, LCD splicing screens, and projection fusion screens, often have a length of 6 meters and a height of 3 meters. Traditional touch screen technology cannot be applied to such a huge screen occasion. [0003] Large-size touch screens mainly use infrared technology to locate and track the human body, including infrared touch frame technology, infrared camera technology, etc. Since light and natural light both contain infrared light, there is a problem with these technologies that they are very susceptible to interferenc...

Claims

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Application Information

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IPC IPC(8): G06F3/042G06F3/0488
Inventor 李江王卫红
Owner ZHEJIANG UNIV OF TECH
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