本文選題：低功耗　切入點(diǎn)：BLE　出處：《深圳大學(xué)》2017年碩士論文　論文類型：學(xué)位論文

【摘要】：近年來物聯(lián)網(wǎng)技術(shù)迅猛發(fā)展,其應(yīng)用領(lǐng)域不斷拓寬,給人們的生活各方面帶來了巨大的便利。藍(lán)牙技術(shù)作為物聯(lián)網(wǎng)傳輸層的重要組成部分,它通過微微網(wǎng)的方式為短距離的無線設(shè)備提供低成本、低功耗的無線接口,實(shí)現(xiàn)設(shè)備之間的自動(dòng)同步、數(shù)據(jù)交換以及資源共享等。由于物聯(lián)網(wǎng)無線設(shè)備多以手持式、穿戴式為主,且多為非持續(xù)性供電的應(yīng)用場(chǎng)景,設(shè)備能夠使用的電量極其有限。因此,如何保證物聯(lián)網(wǎng)終端設(shè)備能夠長(zhǎng)時(shí)間運(yùn)行成為物聯(lián)網(wǎng)傳輸領(lǐng)域的熱點(diǎn)問題之一。由于當(dāng)前物聯(lián)網(wǎng)無線設(shè)備體積小、功能豐富、應(yīng)用環(huán)境變化迅速等特點(diǎn),盡管在硬件上采用降低電子元件本身功耗的策略,軟件上采用超時(shí)控制算法,但是仍然不足以使得設(shè)備能夠長(zhǎng)時(shí)間運(yùn)行。此外,近三十年來電池的容量?jī)H增加了2~4倍,所以僅靠增加電池電量的方式也不足以解決此問題。降低無線設(shè)備運(yùn)行過程中自身所消耗的電量,其作用明顯且能夠降低設(shè)備成本,因此此方法越來越受到研究者的關(guān)注。本文根據(jù)物聯(lián)網(wǎng)藍(lán)牙無線技術(shù)的特點(diǎn),對(duì)傳統(tǒng)物聯(lián)網(wǎng)無線設(shè)備在運(yùn)行的各個(gè)階段進(jìn)行優(yōu)化和改進(jìn),在不減少設(shè)備需求和額外增加成本的情況下,達(dá)到降低設(shè)備功耗的目的。本文主要的研究?jī)?nèi)容如下:(1)介紹了當(dāng)前物聯(lián)網(wǎng)中藍(lán)牙設(shè)備的發(fā)展現(xiàn)狀,針對(duì)當(dāng)前藍(lán)牙設(shè)備運(yùn)行時(shí)間不長(zhǎng)的問題,詳細(xì)說明了降低功耗的緊迫性與必要性。(2)闡述了當(dāng)前低功耗技術(shù)的發(fā)展與應(yīng)用情況。(3)介紹并分析了藍(lán)牙通信過程中的各個(gè)狀態(tài),研究了藍(lán)牙主設(shè)備和藍(lán)牙從設(shè)備在連接前、連接中、連接后不同通信狀態(tài)下的功耗計(jì)算過程,并給出了相關(guān)降低功耗的建議。(4)分析了應(yīng)用開發(fā)需求,對(duì)低功耗藍(lán)牙體溫計(jì)的軟、硬件進(jìn)行了設(shè)計(jì)開發(fā),并實(shí)現(xiàn)了藍(lán)牙設(shè)備之間的正常通信。(5)根據(jù)對(duì)藍(lán)牙通信過程的能耗分析,結(jié)合系統(tǒng)軟硬件,對(duì)低功耗藍(lán)牙體溫計(jì)的功能和功耗部分進(jìn)行了測(cè)試。實(shí)驗(yàn)表明根據(jù)分析的結(jié)論能夠達(dá)到了降低能耗的目的。本論文的技術(shù)創(chuàng)新點(diǎn)如下:(1)對(duì)藍(lán)牙主從設(shè)備在通信前、通信中以及通信后各個(gè)過程進(jìn)行了分析,給出藍(lán)牙設(shè)備在通信過程中能量計(jì)算方式。(2)分析出藍(lán)牙通信過程中對(duì)能量影響較大的通信參數(shù),并給出相關(guān)的降低功耗的建議。
[Abstract]:In recent years, with the rapid development of Internet of things technology, its application field has been widened, which brings great convenience to people in all aspects of life. Bluetooth technology as an important part of the Internet of things transport layer, It provides low cost, low power wireless interface for short distance wireless devices by piconet, and realizes automatic synchronization, data exchange and resource sharing between devices. Wearable, mostly non-sustainable power-powered applications in which devices can use extremely limited power, therefore, How to ensure that the terminal equipment of the Internet of things can run for a long time has become one of the hot issues in the field of Internet of things transmission. Although the hardware strategy is to reduce the power consumption of the electronic components themselves and the time-out control algorithm is used in the software, it is still not enough to make the device run for a long time. In addition, the capacity of the battery has increased only 2 times in the last 30 years. Therefore, increasing battery power alone is not enough to solve this problem. Reducing the amount of electricity consumed by the wireless device itself during the operation of the wireless device has a significant effect and can reduce the cost of the device. Therefore, this method has attracted more and more attention of researchers. According to the characteristics of Bluetooth wireless technology, this paper optimizes and improves the traditional wireless devices of Internet of things in various stages of operation. The purpose of reducing device power consumption is achieved without reducing equipment demand and additional cost. The main research contents of this paper are as follows: 1) the current development status of Bluetooth devices in the Internet of things is introduced. Aiming at the short running time of Bluetooth equipment, the urgency and necessity of reducing power consumption are explained in detail. This paper studies the power calculation process of Bluetooth main device and Bluetooth slave device under different communication states before, during and after connection, and gives some suggestions for reducing power consumption. Finally, the application development requirements are analyzed, and the software of low-power Bluetooth thermometer is analyzed. The hardware is designed and developed, and the normal communication between Bluetooth devices is realized. (5) according to the energy consumption analysis of Bluetooth communication process, combined with the software and hardware of the system, The function and power consumption of low-power Bluetooth thermometer are tested. The experiment shows that the purpose of reducing energy consumption can be achieved according to the conclusion of the analysis. The technological innovation of this paper is as follows: 1) the master-slave equipment of Bluetooth is communicated before communication. During and after the communication each process is analyzed, and the energy calculation method of Bluetooth equipment in the communication process is given.) the communication parameters which have great influence on energy in the process of Bluetooth communication are analyzed, and the relevant suggestions for reducing power consumption are given.
【學(xué)位授予單位】：深圳大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2017
【分類號(hào)】：TN925

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本文編號(hào)：1601045