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Pulse coupled oscillator time synchronization model and method based on firefly synchronization

A technology of pulse coupling and time synchronization, applied in synchronization devices, electrical components, wireless communication, 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: 2019-09-20
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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  • Pulse coupled oscillator time synchronization model and method based on firefly synchronization
  • Pulse coupled oscillator time synchronization model and method based on firefly synchronization
  • Pulse coupled oscillator time synchronization model and method based on firefly synchronization

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Embodiment Construction

[0018] The specific embodiment of the present invention is described below in conjunction with accompanying drawing:

[0019] Construct a coupled-distinct 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 fires and immediately returns to state x = 0, and at the same time there will be electrical coupling with other oscillators, thereby raising the state of other oscillators by a small increment ε, called coupling strength. It is the effect of this coupling that makes the state of the oscillator tend to be the same, and finally reaches the simultaneous discharge state. Let λ=0, S 0 =1 / T, and t∈[0,T], we can get dx / dt=1 / T, integrate both sides of this differential equation to get x=t / T, T is period, φ=t / T is phase variable, Then get the non-leakage pulse coupled oscillator model x=f(...

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Abstract

The invention discloses a pulse coupled oscillator time synchronization model and method based on firefly synchronization, and belongs to the technical field of wireless network communication. A model introduces a negative coupling factor in a phase coupling mode only with positive coupling, unifies a coupling strength reference, constructs positive and negative different coupling strengths, and divides the phase coupling mode into excitation coupling and inhibition coupling; the variation interval of the oscillator phase is divided in a halving mode, and synchronous tracking is carried out on the oscillator in different initial states. The method comprises the synchronization of two oscillators and the synchronization of two oscillators in the multi-oscillator system, and finally the synchronization of the multi-oscillator system is mapped. According to the model and the method, the phase coupling mode is optimized, the synchronization speed of the system is improved, and certain theoretical guiding significance and application value are achieved for actual production.

Description

technical field [0001] The invention relates to the technical field of wireless network communication, in particular to a firefly synchronization-based pulse-coupled oscillator time synchronization model and method. 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. The application prospects are very broad and are closely related to people's daily activities. 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 an inexpensive crystal oscillator. Due to the limitations of the manufacturing process of the crystal oscillator, and it is eas...

Claims

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Application Information

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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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