畢業論文

打賞
當前位置: 畢業論文 > 自動化 >

AT89S52單片機電容電感自動測試儀設計+PCB電路圖

時間:2019-04-30 22:36來源:畢業論文
以AT89S52單片機為控制核心,搭配必要的外圍電路對電阻、電容和電感參數進行測量。系統的基本原理是將電阻阻值、電容值、電感值的變化均轉換成方波脈沖頻率的變化

摘要:隨著電子工業的發展,電子元器件急劇增加,電子元器件的適用范圍也逐近廣泛起來。幾年來,電子行業的發展速度相當快,電子行業的公司企業數目也不斷增多。這個現象帶來的直接結果是電子行業方面的人才需求不斷增多。所以,現在大多數高校都開設與電子類相關的專業及課程,為社會培養大量的電子行業的人才。做過電路設計的工作人員或者學生大多數使用萬用表來測量一些元件參數或者電路中的電壓電流。然而萬用表有一定的局限性,它只能測量有限種類的元器件的參數,對于電容和電感等一些電抗元件就無能為力了。所以制作一種簡便的電容電感測量儀顯得尤為重要,方便電路設計人員或者高校電子類專業的學生測量電路中需要用到的電容及電感的具體值。35053
本次設計的思想是基于以上原因提出來的。該系統以AT89S52單片機為控制核心,搭配必要的外圍電路對電阻、電容和電感參數進行測量。系統的基本原理是將電阻阻值、電容值、電感值的變化均轉換成方波脈沖頻率的變化,利用計數器測頻后通過單片機做運算,最后計算出待測元件的各個參數并顯示在1602液晶屏幕上。系統使用按鍵選擇被測元件類型,使用1602液晶屏作為顯示部分。測量時,只需將待測元件引腳放在測試儀的輸入端,用按鍵操作需要測量的參數,便可以很快測出被測元器件的參數,簡便易用。實驗測試結果表明,本系統性能穩定,測量精度高。
畢業論文關鍵詞:單片機,555多諧振蕩電路,LCD顯示模塊,電容三點式振蕩
Automatic Measuring Instrument for Capacitors,Inductors 源`自*六)維[論*文'網www.mmeqir.tw
Abstract:In recent years, the electronic industry have been developed gradually, and the numbers of company related with electronics are increasing. In order to develop electronic talents, most universities have opened the electronics courses. Circuit design staff or students often need to use a multimeter to measure the parameters of a number of components in the circuit voltage or current. Common multimeters have some limitations. Such as they can only measure the parameters of the limited types of components, for example, capacitors, inductors or some reactance components. So it is important to design a simple RLC meter basis.
In this design, an AT89S52 micro-controller was used as a core of the control system. And the external circuit was used to measure the value of the resistance, capacitance and inductance. The basic principle of the system is convert the value of resistor, capacitance or inductance into the frequency of square wave pulse. Then, it used the counter to do after the operation through the microcontroller, and finally calculate the device. The various parameters is shown by the 1602 LCD screen. The device which use buttons to set the type of parameter. When the component was measured, we just need inputting the component in the tester pin. When turned the key on, the parameters is measured. We can easily read the parameters of the tested components. Experimental results show that the system is stable and accurate.
Keywords: AT89S52   LC three-point oscillator circuit   capacitance measurements inductance test
目 錄
1.緒論    1
2.電路方案的比較與論證    2
2.1系統設計總述    2
2.2電容測量方案論證    2
2.3電感測量方案    4
3.核心元器件介紹    6
3.1 AT89S52單片機的介紹    6
3.2NE555的介紹    7
3.3CD4052BCM    9

源`自*六)維[論*文'網www.mmeqir.tw


3.4 1602液晶的介紹    11
4.單元模塊的設計    14
4.1電容測量模塊    14
4.2電感測量模塊    15
4.3擴展模塊    16 AT89S52單片機電容電感自動測試儀設計+PCB電路圖:http://www.mmeqir.tw/zidonghua/20190430/32833.html
------分隔線----------------------------
推薦內容
体彩22选5