本文選題：多點焊接 + 觸摸屏�。� 參考：《安徽理工大學(xué)》2017年碩士論文

【摘要】：隨著工業(yè)生產(chǎn)自動化程度不斷提高,焊接設(shè)備逐漸向網(wǎng)絡(luò)化、集成化、數(shù)字化和高效率方向發(fā)展。在現(xiàn)有的工頻電阻焊接設(shè)備中,一般是一臺焊機控制器控制一臺變壓器,對于需要進行多點焊接的材料,需要多臺焊接變壓器同時工作才能完成焊接任務(wù)。而當焊接參數(shù)值較多時,參數(shù)調(diào)整過程也非常繁瑣,導(dǎo)致焊接效率低下。本文針對焊接設(shè)備無法進行多點焊接、參數(shù)設(shè)置繁瑣、焊接效率低等問題,提出了一種多從機工頻電阻焊接系統(tǒng),它通過一塊觸摸屏可以實現(xiàn)對多臺焊接設(shè)備進行參數(shù)設(shè)置、工作狀態(tài)的監(jiān)控、焊接參數(shù)記錄以及故障的報警。多從機工頻電阻焊接系統(tǒng)的主焊接設(shè)備選用單相工頻電阻焊機,由調(diào)整可控硅的觸發(fā)角來對焊接變壓器二次側(cè)輸出電流的大小進行調(diào)節(jié)。系統(tǒng)將觸摸屏作為上位機,通過觸摸屏與焊接控制器(集控中心)進行人機交換,同時集控中心又與多個驅(qū)動控制器(驅(qū)動模塊)進行通信,從而達到群控焊機進行焊接工作的目的。觸摸屏、驅(qū)動模塊與集控中心之間采用RS485通訊方式。在系統(tǒng)硬件設(shè)計中,采用ATmega128和ATmega8組成的雙控制芯片來設(shè)計數(shù)字化控制電路,充分地發(fā)揮了 ATmega128單片機存儲能力、控制能力強大和ATmega8單片機成本低廉的優(yōu)勢。集控中心的硬件設(shè)計電路主要包括電源模塊、網(wǎng)壓采樣模塊、RS485通訊模塊、過零檢測電路、備用的輸入輸出口以及繼電器輸出接口等。驅(qū)動模塊重點設(shè)計了控硅驅(qū)動電路、RS485通訊模塊、腳踏開關(guān)電路、氣閥電路、操作面板模塊等硬件電路。將觸摸屏當作人機交換界面,介紹了觸摸屏的界面編寫過程,觸摸屏程序采用由威綸通提供的特定語言編寫。軟件方面,介紹了系統(tǒng)、集控中心和驅(qū)動模塊的工作流程圖,并且完成程序調(diào)試。通過觸摸屏給集控中心送入焊接參數(shù),集控中心對參數(shù)進行處理,并將處理好的數(shù)據(jù)存入到EEPROM中,當給出焊接命令時,將處理好的數(shù)據(jù)發(fā)送給相應(yīng)的驅(qū)動模塊,控制焊接變壓器進行焊接工作,減少驅(qū)動控制器的工作量,提高效率。最后,本文對本次設(shè)計進行了實驗測試,分別進行了焊接模式下的系統(tǒng)測試和監(jiān)控模式下的系統(tǒng)測試,對觸摸屏界面進行了編寫和分析,并給出次級輸出電流的波形圖。經(jīng)過長期的反復(fù)測試,表明測試系統(tǒng)穩(wěn)定,能達到預(yù)期的設(shè)計目標。
[Abstract]:With the increasing automation of industrial production, welding equipment is developing towards networking, integration, digitalization and high efficiency. In the existing power frequency resistance welding equipment, usually a welding machine controller controls a transformer. For the materials that need to be multipoint welding, several welding transformers are required to work simultaneously to complete the welding task. When the welding parameter value is more, the parameter adjustment process is also very complicated, resulting in low welding efficiency. Aiming at the problems that welding equipment can not carry out multi-point welding, parameter setting is cumbersome and welding efficiency is low, a multi-slave machine power frequency resistance welding system is proposed, which can set parameters of multiple welding equipments by a touch screen. Monitor working status, record welding parameters and alarm for failure. Single phase power frequency resistance welding machine is used in the main welding equipment of multi-slave power frequency resistance welding system. The output current of secondary side of welding transformer is adjusted by adjusting the trigger angle of SCR. The system takes the touch screen as the upper computer and exchanges with the welding controller (centralized control center) through the touch screen. At the same time, the centralized control center communicates with several driving controllers (driving modules). In order to achieve the purpose of welding group control welding machine. Touch screen, driving module and centralized control center using RS485 communication mode. In the system hardware design, the double control chip composed of ATmega128 and ATmega8 is used to design the digital control circuit, which makes full use of the storage ability of ATmega128 single chip computer, the powerful control ability and the low cost of ATmega8 single chip microcomputer. The hardware design circuit of the central control center mainly includes power supply module, network voltage sampling module and RS485 communication module, zero crossing detection circuit, spare input and output, relay output interface, etc. The driving module focuses on the design of silicon control drive circuit RS485 communication module, foot switch circuit, air valve circuit, operation panel module and other hardware circuits. Taking touch screen as man-machine exchange interface, this paper introduces the interface programming process of touch screen. The touch screen program is written in a special language provided by Veritone. Software, introduced the system, centralized control center and driving module flow chart, and complete the program debugging. Through the touch screen, the welding parameters are sent to the centralized control center. The central control center processes the parameters, and stores the processed data into the EEPROM. When the welding command is given, the processed data is sent to the corresponding driving module. Control welding transformer welding, reduce the workload of driving controller, improve efficiency. Finally, the design is tested, the system test in welding mode and the system test in monitoring mode are carried out, the interface of touch screen is written and analyzed, and the waveform diagram of secondary output current is given. After long-term repeated test, it shows that the test system is stable and can reach the expected design goal.
【學(xué)位授予單位】：安徽理工大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2017
【分類號】：TG438.2

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