張力器數位控制與電腦連線

Digital Control and Computer Communication of Tension Meters

呂銘展(Ming-Jain Lu)

指導教授 ： 陳雙源

國立臺北科技大學/機電學院/機電整合研究所/碩士(2010年)

https://doi.org/10.6841/NTUT.2010.00324

摘要

因市面上張力器多數是以類比電路，控制繞線時的張力，這種方式雖可達到控制繞線張力的目的，但由於是應用運算放大器等硬體電路設計成的，每一台張力器於換線圈型號、線材時皆要重新調整，且每一台的調整結果不易相同，造成產品品質不一，更無法以電腦連線來自動調整及監控，且不具備有即時顯示張力值之功能。
有鑒於此，本研究運用串列埠作為通訊的協定，以個人電腦模擬當繞線機主電腦，利用RS-232及RS-485做為通訊介面，整合了張力器、步進馬達、自行開發的控制電路、小型液晶螢幕(LCD)，建構一套低成本但多功能的數位式張力器。其中，張力器之控制係以單晶片W78E516B微控制器為主要核心，搭配自行發展的周邊電路及韌體，以做設定及馬達之正轉、反轉及起止等控制。另個人電腦(模擬繞線機主電腦)除做為串列埠主機端外，依據不同系統功能，它也可用來執行系統的主要程式。
最後，將上述各單元建構完成及整合後，建構出一套全新的數位張力器，我們設計了兩個系統，一、單機版數位式張力器，它們不僅有初使化的能力，並且擁有即時顯示張力值的功能，這部份在實際與繞線機結合上機後已證實能達到預期之目標。二、連線版數位式張力器，與一不同處，在於透過個人電腦(繞線機主電腦)對數位式張力器下達控制、存取、初始化等功用，此部分亦已達到預期目標，而將數位式張力器產品化的後續研究，則待未來學弟來進行。

關鍵字

張力器 ； 串列埠通訊(RS-232、RS-485) ； 微控制器

並列摘要

Most of tension meters for coil winding machines are implemented by analog circuit. However, as the diameter or material of the wire or coil type change, the tension of the wire should be changed too. The adjustment for each tension meter is quite troublesome and hard to maintain consistent. Thus, the quality of winded coils are difficult to be uniform. Hence, in this study, the tension meter is implemented by digital circuit which provides several functions such as the initial setup for accurate reading of tension, the tensile value display, monitoring and adjusting from pushbuttoms or from a remoted personal computer (PC). These functions can let up to 16 tension meters be adjusted, monitored and controlled simultaneously through computer network.
The digital tension meter consists of RS-232 or RS-485 to communicate with a PC (simulating main controller of coil winding machine). Also, a stepper motor and a small size liquid crystal display (LCD) are integrated into the designed digital circuit with the micro-processor W78E516B to control the tension meter.
Finally, we have designed two systems for the digital tension meter. One is for off-line system (operating individually), and the other one is for on-line system (controlled and communicated through PC). Both of these two systems contain the functions of initial setup, tensile value display, saving and control. For the on-line system, the digital tension meter can receive the operation code from the PC. Above all, the tension meter with above functions have been proved its versatility with coil winding machine. And the commercialization of the digital tension meter is left for the future work.

並列關鍵字

Tension meter ； Serial communication(RS-232,RS-485) ； Microcontrollers

參考文獻

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