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Time Synchronization Model and Method of Pulse-Coupled Oscillator Based on Firefly Synchronization

A technology of pulse coupling and time synchronization, applied in synchronization devices, wireless communication, network topology, etc., can solve problems such as feasibility to be studied, and achieve the effect of reducing the synchronization period and speeding up the synchronization speed.

Active Publication Date: 2022-06-07
INNER MONGOLIA UNIV OF SCI & TECH
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Problems solved by technology

[0004] Although the firefly synchronization algorithm has many advantages, it belongs to a new type of synchronization mechanism in the research of wireless sensor network time synchronization algorithm, and many theoretical issues and feasibility in practical applications have yet to be studied.

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  • Time Synchronization Model and Method of Pulse-Coupled Oscillator Based on Firefly Synchronization
  • Time Synchronization Model and Method of Pulse-Coupled Oscillator Based on Firefly Synchronization

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Embodiment Construction

[0018] The specific embodiments of the present invention will be described below in conjunction with the accompanying drawings:

[0019] Build a coupled-mutually non-leakage pulse-coupled oscillator model:

[0020] (1) Model description

[0021] For Peskin model dx / dt=-λx+S 0 , 0≤x≤1, where λ and S 0 are the leakage factor and charging speed of the oscillator, respectively. When x = 1, the oscillator is excited and immediately returns to the state x = 0, and electrical coupling with other oscillators occurs at the same time, thereby raising the state of other oscillators by a small increment ε, called coupling strength. It is this coupling effect that makes the states of the oscillators tend to be the same, and eventually achieve a simultaneous discharge state. Let λ=0, S 0 =1 / T, and t∈[0,T], get dx / dt=1 / T, and integrate both sides of this differential equation to get x=t / T, T is the period, φ=t / T is the phase variable, Then the non-leakage pulse coupled oscillator mode...

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Abstract

The invention discloses a time synchronization model and method of a pulse-coupled oscillator based on firefly synchronization, and belongs to the technical field of wireless network communication. The model introduces a negative coupling factor in the phase coupling mode with only positive coupling, unifies the coupling strength benchmark, constructs positive and negative coupling strengths, and divides the phase coupling mode into excitation coupling and suppression coupling; the oscillator phase change interval Divide in the form of bisection, and perform synchronous tracking for the oscillator in different initial states. Methods include synchronization of two oscillators and synchronization of two oscillators in a multi-oscillator system, finally mapping out the synchronization of a multi-oscillator system. The model and method of this application optimizes the phase coupling mode, improves the synchronization speed of the system, and has certain theoretical guiding significance and application value for actual production.

Description

technical field [0001] The invention belongs to the technical field of wireless network communication, in particular to a time synchronization model and method of a pulse coupled oscillator based on firefly synchronization. Background technique [0002] Wireless Sensor Network, WSN (Wireless Sensor Network) is a distributed system, which has become one of the current research hotspots because of its wide application prospects. Wireless sensor networks play an important role in military monitoring, environmental monitoring, medical care, smart factories, smart cities, and safety monitoring in coal mines. WSN nodes are independent of each other and communicate wirelessly, each node maintains a local clock, and the timing signal of the clock is generally provided by a cheap crystal oscillator. Due to the limitations of the crystal oscillator manufacturing process, and it is easily affected by various accidental factors such as voltage, temperature and crystal aging during oper...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04W24/06H04W56/00H04W84/18
CPCH04W24/06H04W56/001H04W84/18
Inventor 崔丽珍曹坚金华明赫佳星史明泉安竹林
Owner INNER MONGOLIA UNIV OF SCI & TECH
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