Clock synchronization device for positioning base station and synchronization method thereof

A technology for clock synchronization and base station positioning, which is applied in time division multiplexing systems, electrical components, wireless communications, etc. cost reduction effect

Pending Publication Date: 2018-02-02
丰翼科技(深圳)有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, the wireless self-synchronization system is difficult to develop and has a long cycle. It needs to rely on the GPS positioning clock to keep the clock of the UWB base station synchronized. When it is disturbed by the outside w...

Method used

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  • Clock synchronization device for positioning base station and synchronization method thereof
  • Clock synchronization device for positioning base station and synchronization method thereof
  • Clock synchronization device for positioning base station and synchronization method thereof

Examples

Experimental program
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Embodiment 1

[0039] like figure 1 As shown, the commonly used wireless self-synchronization system, in which, the GPS unit LEA-6T is connected to the PLL clock generation / distribution chip through the PPS port to transmit the notification signal (PPS signal), and the PLL clock generation / distribution chip is connected to the processing unit signal of the STM32F series Connection, the output is the 8MHZ clock required by the processing unit, the PLL clock generation / distribution chip outputs the 38.4MHZ clock required by the UWB chip DW1000, the UWB chip DW1000 is connected to the UWB antenna, the UWB chip DW1000 is connected to the processing unit through the SPI interface, and the processing unit , The UWB chip is connected through the signal, the GPS unit LEA-6T is connected with the processing unit through the serial port, and the GPS unit LEA-6T is connected with the GPS antenna.

[0040] The wireless self-synchronization system is difficult to develop and has a long cycle. It needs to...

Embodiment 2

[0073] The features of this embodiment that are the same as those of Embodiment 1 will not be described in detail. The features of this embodiment that are different from Embodiment 1 are:

[0074] MCU adopts STM32F405.

Embodiment 3

[0076] The features of this embodiment that are the same as those of Embodiment 1 will not be described in detail. The features of this embodiment that are different from Embodiment 1 are:

[0077] MCU adopts STM32F407.

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PUM

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Abstract

The invention relates to a positioning base station clock synchronization device and a synchronization method thereof. In the positioning base station clock synchronization device, the GPS unit is used for positioning and outputting the first clock signal; the processing unit is used for receiving the first clock signal, the first clock signal is synchronized with the GPS unit clock, and outputs the second Clock signal; the positioning unit is used to receive the second clock signal, and the second clock signal is synchronized with the clock of the processing unit to realize the clock synchronization of the GPS unit and the positioning unit, and the clock precision is the same, then the positioning unit of each positioning unit of the positioning base station Clock synchronization, no longer relying on GPS positioning clocks to keep the clocks of positioning base stations synchronized as in the prior art, without using expensive PLL clock generation/distribution chips, which greatly reduces costs, and has a simple structure and accurate positioning.

Description

technical field [0001] The invention relates to the field of clock synchronization, in particular to a positioning base station clock synchronization device and a synchronization method thereof. Background technique [0002] With the improvement of people's requirements for positioning accuracy, UWB positioning technology is more and more popular because of its accuracy up to centimeters, and some indoor positioning: such as factory automation management, prison security management, robotics and other fields The needs are also increasing. obvious. In view of the uniqueness of its positioning system, a UWB positioning system includes at least one positioning tag (Tag) + 4 positioning base stations (Anchor) + positioning server + router (can be wired or wireless, and the positioning base station provides wired or wireless information through this router) connection and location server communication). The working principle is: the positioning tag (Tag) sends a beacon signal i...

Claims

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Application Information

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IPC IPC(8): H04J3/06H04W88/08
CPCH04J3/0685H04W88/08
Inventor 杨久洲
Owner 丰翼科技(深圳)有限公司
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