UWB three-radio-frequency ranging circuit and driving method thereof

Abstract

The invention relates to a UWB three-radio-frequency ranging circuit and a driving method thereof. The UWB communication technology is adopted, a related ranging algorithm in the field is utilized, and three UWB radio frequency modules and a single radio frequency tag are expanded on a ranging base station for ranging. Each UWB radio frequency module on the three-radio-frequency ranging base station can carry out ranging with a single-radio-frequency UWB tag with the same channel. When the three UWB radio frequency modules on the three radio frequency ranging base station respectively adopt three different channels, one three-radio-frequency UWB ranging base station can simultaneously perform parallel ranging with three UWB tags, so that the ranging speed is increased by nearly three timesby being compared with that of a traditional single-radio-frequency ranging base station; and the position refresh rate is increased by nearly three times under the condition of multi-target positioning. Furthermore, a driving method is established and realized based on the UWB three-radio-frequency ranging circuit; and the main process of the driving method comprises the following steps: creating three tasks with the same priority, and initializing and cyclically scheduling the three tasks to realize parallel UWB signal receiving and transmitting of the three UWB radio-frequency modules.

Description

technical field [0001] The invention relates to the technical field of location services, in particular to a UWB three-radio frequency ranging circuit and a driving method thereof. Background technique [0002] In recent years, with the increasing demand for precise positioning technology, the related technologies and industries of location services are developing from outdoor to indoor, giving rise to a series of wireless positioning technologies such as UWB, WIFI, ZigBee, Bluetooth, ultrasonic, infrared, etc., among which UWB The positioning technology has the characteristics of high time resolution, strong penetrating power, strong anti-multipath weakening ability and strong anti-interference ability, which makes UWB more suitable for indoor positioning, while most other technologies are easily affected by the environment and have low positioning accuracy. The positioning distance is short, which cannot meet the requirements of indoor high-precision positioning. [0003]...

AI Technical Summary

Problems solved by technology

[0004] A UWB three radio frequency ranging circuit and its driving method proposed by the present invention can make three UWB radio frequency modules using different channels work in parallel, and can increase the ranging speed by nearly 3 times to solve the positioning speed in multi-target scenarios Slow and small label capacity, while ensuring that the overhead will not be too high

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