Direction and distance measuring method based on infrared signal, and system

A technology of infrared signal and ranging method, applied in the field of sensors, can solve the problems of poor orientation performance of infrared communication, lack of low-cost directional communication and ranging technology, etc.

Active Publication Date: 2019-03-29
SOUTHEAST UNIV
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Problems solved by technology

The fixed-frequency amplifier circuit increases the receiving distance of the infrared module, but it also leads to the deterioration of the directional performance of infrared communication: for example, at a short distance, due to the scattering of light by the environment, even if the transmitter is facing away from the TSOP1836 receiver, the TSOP1836 can still receive to remote signal
[0007] To sum up, due to the lack of low-cost directional communication and ranging technology within a range of more than ten meters indoors and outdoors

Method used

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  • Direction and distance measuring method based on infrared signal, and system
  • Direction and distance measuring method based on infrared signal, and system
  • Direction and distance measuring method based on infrared signal, and system

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Embodiment Construction

[0039] The preferred embodiments of the present invention will be described below in conjunction with the accompanying drawings. It should be understood that the preferred embodiments described here are only used to illustrate and explain the present invention, and are not intended to limit the present invention.

[0040] figure 1 It is a circuit implementation of the infrared signal-based direction-finding and ranging system according to the present invention. The system includes an infrared transmitting module and an infrared receiving module.

[0041] refer to image 3 . Among them, the infrared emission module includes:

[0042] At least 3 parallel emission branches, each of which includes at least one infrared emission tube, refer to Figure 7 As shown, the infrared emitting tubes are evenly distributed along the first circumference; the emitting branches respectively transmit infrared signals in the set sequence and the set emitting tube driving current, and the infr...

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Abstract

The invention provides a direction and a distance measuring method based on an infrared signal, and a system. According to the method and the system, uniformly distributed infrared receiving tubes arearranged on an infrared receiving module. The infrared signal of an infrared transmitting module is received through the uniformly distributed infrared receiving tubes. A position relation between the infrared receiving module and the infrared transmitting module is determined according to the received infrared signal. Furthermore infrared transmitting tube driving current which corresponds withthe infrared signal is gradually reduced for acquiring critical strength of the infrared signal to the receiving module. Therefore, according to the method, in high-precision quick direction measuring, the distance between the infrared transmitting module and the infrared receiving module can be synchronously calculated according to the infrared transmitting tube driving current which correspondswith the infrared signal, thereby realizing quick direction and distance measurement. According to the method and the system, through matching between a hardware circuit and a control unit, a precision requirement to an infrared device can be reduced, and furthermore hardware cost is reduced.

Description

technical field [0001] The invention relates to sensor technology, in particular to a method and system for measuring direction and distance. Background technique [0002] Direction finding and ranging in indoor environments usually rely on lidar. Traditional lidar can achieve 360° omnidirectional scanning, but its price is high; compared with traditional lidar, solid-state lidar is much cheaper, but it cannot achieve 360° rotation and can only detect the front. The performance of lidar is poor in extreme climates, and the visible light beams it emits and returns will also bring a certain sense of obstruction to people's vision. [0003] Based on satellite and GPS positioning technology, it has a good effect on outdoor positioning and outdoor ranging, but it cannot find direction. Due to the limitations of signal transmission conditions, satellite or GPS signal interference and attenuation are strong in indoor environments, so they cannot be directly used for indoor distan...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01S3/78G01S11/12
CPCG01S3/78G01S11/12
Inventor 吴剑锋仇超刘斌斌张一鸣刘海洋张亦弛汪峰
Owner SOUTHEAST UNIV
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