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UWB-based distance measuring device and a distance measuring time sequence method thereof

A distance measuring device and timing technology, which is applied in the direction of measuring devices, radio wave measuring systems, instruments, etc., can solve the problems of timing schemes that rarely have ranging, and achieve the effect of prolonging the standby life and high robustness

Inactive Publication Date: 2020-02-18
NANJING INST OF TECH
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At this stage, domestic and foreign UWB indoor positioning technology generally lies in the research and improvement of algorithms such as ranging and positioning, and there are few timing schemes for ranging

Method used

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  • UWB-based distance measuring device and a distance measuring time sequence method thereof
  • UWB-based distance measuring device and a distance measuring time sequence method thereof
  • UWB-based distance measuring device and a distance measuring time sequence method thereof

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Embodiment Construction

[0038] The present invention will be further explained below in conjunction with the accompanying drawings.

[0039] Such as figure 1 As shown, a UWB-based ranging device includes several positioning base stations and tags to be positioned. The positioning base stations and tags exchange time stamp information through UWB communication; the positioning base stations are installed around the indoor space and have different heights. Location.

[0040] The positioning base station includes a first main control chip, a DWM1000 module, an Ethernet module and a power module. The first main control chip is connected to the DWM1000 module and the Ethernet module respectively, and the power supply module supplies power for the first main control chip, the DWM1000 module and the Ethernet module. , the positioning base station is used to maintain the ID registry of other positioning base stations in the same area, and periodically send the ID registry to the area to facilitate the recep...

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Abstract

The invention discloses a UWB-based distance measuring device and a distance measuring time sequence method thereof. The distance measuring device comprises a plurality of positioning base stations and a to-be-located label. The positioning base stations and the label exchange timestamp information through UWB communication. The positioning base stations include first main control chips, DWM1000 modules, Ethernet modules and power supply modules. The label includes a second main control chip, a DWM1000 module and a power supply module. In addition, according to the distance measuring time sequence method, bilateral bidirectional ranging is adopted. When the label moves in space, a distance measuring signal is sent to a base station in the space periodically, the base station carries out distance measuring confirmation by responding to the signal; and then the label sends a final signal to complete distance measuring communication once. According to the invention, the UWB-based distancemeasuring time sequence method has high robustness; the energy consumption of the label is effectively reduced; and the positioning precision is improved.

Description

technical field [0001] The invention relates to the field of ultra-wideband wireless technology positioning, in particular to a UWB-based ranging device and a timing method for ranging. Background technique [0002] At present, the positioning methods in small areas are mainly RSSI (received signal strength indication) and TOF (time of flight). They all need to fix some communication nodes in the area. Ultrasonic, radio frequency signals, infrared rays, Bluetooth and other wireless signals are the main communication between nodes. means. Among them, infrared and ultrasonic are affected by line-of-sight communication, and the application scenarios are limited. Communications such as Bluetooth and WIFI have high power consumption per unit time, and the positioning error is relatively large. Therefore, the above methods have the disadvantages of low positioning accuracy and are prone to interference, and the positioning is stable. It is difficult to adapt to the requirements o...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01S5/14
CPCG01S5/14
Inventor 焦良葆周健顾慧东王桂杰曹雪虹
Owner NANJING INST OF TECH
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