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Man-machine interaction ground system based on laser radar

A lidar and ground system technology, applied in the field of human-computer interaction, can solve the problems of limited detection amount and decreased positioning accuracy, and achieve the effect of expanding the detection amount

Inactive Publication Date: 2016-02-03
ZHEJIANG UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the volume and power limitations of the lidar receiving sensor, the effective detection radius is only 3m, and the formed scanning surface is a semicircle with a radius of 3m. The positioning accuracy of the area far from the detection device will decrease, and the detection amount is limited.

Method used

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  • Man-machine interaction ground system based on laser radar
  • Man-machine interaction ground system based on laser radar
  • Man-machine interaction ground system based on laser radar

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Embodiment Construction

[0021] figure 1 It is a schematic diagram of the existing lidar human-computer interaction ground system using a projector. The lidar human-computer interaction ground system using a projector in the prior art includes a lidar detection device 1 , a control host 2 and a projector 3 , wherein the lidar detection device 1 is connected to the control host 2 .

[0022] The projector 3 projects the display content on the ground to form a display screen, and an LED screen installed on the ground can also be used as a display screen. The laser radar detection device 1 installed on the ground forms a radial laser scanning surface 11 parallel to the ground, detects the blocking information of the user's limbs or other objects used to the laser to determine the polar coordinate information of the touch point, and converts the polar coordinate information Send it to the control host 2. The control host 2 calculates the spatial position of the touch point according to the polar coordina...

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Abstract

The invention discloses a man-machine interaction ground system based on a laser radar. The man-machine interaction ground system comprises at least two laser radar detection devices, a control host and a display screen. The at least two laser radar detection devices are connected to the control host. The display screen is an LED display screen installed on the ground or a projector such that display content is projected to the ground. Radial laser scanning surfaces, parallel to the ground, are formed on the laser radar detection devices and used for detecting touch motion on the scanning surfaces and positioning information on polar coordinates of touch points. The control host is used for calculating spatial position of the touch points based on information on polar coordinates of the touch points and the corresponding laser radar detection devices. By adoption of the above mode, the problem of existing laser radar touch technology such as limited detection capacity is solved and the size of a display area is flexibly suited.

Description

technical field [0001] The present invention relates to human-computer interaction technology, in particular to a laser radar-based touch human-computer interaction technology. Background technique [0002] At present, the commonly used ground projection interactive system uses infrared cameras to capture the movement and position information of the human body. Since natural light contains infrared light, one problem with this technology is that it is very susceptible to interference from ambient light. Outdoors and indoors with relatively bright lights will appear Hypersensitivity or malfunction. [0003] Lidar touch technology uses a laser radar detection device to form a radial laser scanning surface, detects the touch action on the scanning surface, and then locates the position information of one or more touch points. Compared with traditional infrared technology, it is not sensitive to ambient light. , Strong anti-interference ability and so on. However, due to the v...

Claims

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Application Information

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IPC IPC(8): G06F3/01
Inventor 李江王卫红
Owner ZHEJIANG UNIV OF TECH
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