【摘要】：由于污損生物容易在海水管線內(nèi)壁和海水過濾器網(wǎng)附著沉積，為此可利用超聲波技術(shù)殺死海生物幼體，以防止其透過濾網(wǎng)進(jìn)入海水系統(tǒng)成長(zhǎng)，從而避免造成海水管道污染堵塞[1-2]。論文針對(duì)中海油海上平臺(tái)防除污損生物的需求，進(jìn)行了超聲波自動(dòng)控制系統(tǒng)的設(shè)計(jì)及實(shí)施。 論文所涉及的超聲波自動(dòng)控制系統(tǒng)主要由超聲波發(fā)生器、超聲波振動(dòng)系統(tǒng)、防爆柜和組態(tài)監(jiān)控系統(tǒng)組成。論文通過分析海上平臺(tái)防除污損生物的要求，首先設(shè)計(jì)了超聲波防爆系統(tǒng)，針對(duì)單臺(tái)或多臺(tái)啟動(dòng)需求，，進(jìn)行了控制柜的電氣設(shè)計(jì)及連接；然后針對(duì)超聲波振動(dòng)部分功率和頻率的需求，選擇了合適的換能器，并針對(duì)此換能器研究開發(fā)了基于STM32的超聲波數(shù)控發(fā)生器；最后，針對(duì)海上平臺(tái)全自動(dòng)超聲波控制系統(tǒng)的監(jiān)控需求，設(shè)計(jì)了組態(tài)界面，基于Modbus通信協(xié)議的基礎(chǔ)上實(shí)時(shí)顯示超聲波驅(qū)動(dòng)電源的數(shù)據(jù)。 本文所設(shè)計(jì)的數(shù)控式超聲波發(fā)生器（或稱為超聲波驅(qū)動(dòng)電源）采用意法半導(dǎo)體（ST）公司生產(chǎn)的STM32系列為主控芯片。通過四路PWM輸出驅(qū)動(dòng)電路來分別驅(qū)動(dòng)全橋電路的四個(gè)IGBT，經(jīng)變壓器耦合產(chǎn)生的高頻交流信號(hào)，通過串聯(lián)諧振匹配網(wǎng)絡(luò)后接入超聲波換能器并驅(qū)動(dòng)超聲波振動(dòng)系統(tǒng)以需要的振幅進(jìn)行工作。超聲波驅(qū)動(dòng)電源系統(tǒng)采用智能數(shù)字式控制算法，實(shí)現(xiàn)自動(dòng)頻率搜索與頻率跟蹤精細(xì)、準(zhǔn)確。通過實(shí)驗(yàn)結(jié)果，設(shè)計(jì)了一種智能化的功率控制方法即便在工作負(fù)載劇烈變化的場(chǎng)合，也能實(shí)現(xiàn)換能器振幅恒定，同時(shí)系統(tǒng)內(nèi)置保護(hù)電路，系統(tǒng)故障報(bào)警機(jī)制完善且運(yùn)行穩(wěn)定。 論文通過設(shè)置不同的工作功率和工作方式，通過檢測(cè)超聲波系統(tǒng)對(duì)海生物的殺死效果以尋求超聲波殺死海生物的最佳功率。同時(shí)論文實(shí)驗(yàn)結(jié)果表明超聲波在防除海洋污損生物方面具有簡(jiǎn)單、經(jīng)濟(jì)、有效、環(huán)保等優(yōu)點(diǎn)。因此，運(yùn)用超聲波技術(shù)開展海洋污損生物防除方面的實(shí)驗(yàn)研究具有重要的意義和美好的發(fā)展前景。
[Abstract]:Because fouling organisms are easy to deposit on the inner wall of seawater pipeline and seawater filter net, the marine organism larvae can be killed by ultrasonic wave technology in order to prevent them from growing into the seawater system through the filter net, thus avoiding the pollution and blockage of seawater pipeline [1-2]. In order to meet the demand of anti-fouling organisms on CNOOC offshore platform, the design and implementation of ultrasonic automatic control system are carried out in this paper. The ultrasonic automatic control system is mainly composed of ultrasonic generator, ultrasonic vibration system, explosion-proof cabinet and configuration monitoring system. By analyzing the requirements of anti-fouling organisms on the offshore platform, the ultrasonic explosion-proof system is designed, and the electrical design and connection of the control cabinet are carried out according to the single or multiple start-up requirements. Then according to the demand of ultrasonic vibration part power and frequency, the suitable transducer is selected, and the ultrasonic numerical control generator based on STM32 is researched and developed. According to the monitoring requirement of the automatic ultrasonic control system of offshore platform, the configuration interface is designed, and the data of ultrasonic driving power supply is displayed in real time based on Modbus communication protocol. The numerical controlled ultrasonic generator (or ultrasonic driving power supply) designed in this paper uses the STM32 series produced by Italy Semiconductor (ST) Company as the main control chip. Four PWM output drive circuits are used to drive the high-frequency AC signals generated by transformer coupling of four IGBT, of the full-bridge circuit. A series resonant matching network is used to connect the ultrasonic transducer and drive the ultrasonic vibration system to work with the desired amplitude. The ultrasonic drive power supply system adopts intelligent digital control algorithm to realize automatic frequency searching and frequency tracking. According to the experimental results, an intelligent power control method is designed, which can realize the constant amplitude of the transducer, the built-in protection circuit, the perfect alarm mechanism and the stable operation of the system, even when the workload changes dramatically. By setting up different working power and working mode, this paper tries to find out the best power of ultrasonic killing marine organisms by detecting the killing effect of ultrasonic system on marine organisms. At the same time, the experimental results show that ultrasonic wave has the advantages of simple, economical, effective and environmental protection. Therefore, the application of ultrasonic technology to the biological prevention of marine fouling has important significance and bright development prospects.
【學(xué)位授予單位】：杭州電子科技大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2014
【分類號(hào)】：TB559

【參考文獻(xiàn)】

相關(guān)期刊論文 前10條

1 閆迎利;壓電效應(yīng)及其應(yīng)用[J];安陽(yáng)師范學(xué)院學(xué)報(bào);2001年02期

2 黃進(jìn)文;;RLC串/并聯(lián)諧振回路的諧振特性與典型參數(shù)分析[J];保山師專學(xué)報(bào);2006年05期

3 吳石林;張s

本文編號(hào)：2226824