【正文】 基于 MS5561 的液位傳感器設(shè)計(jì)摘要基于單片機(jī)和 C 語言液位傳感器的設(shè)計(jì)，可用于石 油 化 工 、 冶 金 、 電 力 、 制 藥 、供 排 水 、 環(huán) 保 。利用液位傳感器是一種有效的接觸式測量方法,可廣泛應(yīng)用于各種需要測量的場合。具有高精度，低功耗，經(jīng)溫度補(bǔ)償和數(shù)字校正，無需外部元件，防潮保護(hù)，壓力和溫度測量。本液位傳感器采用 MS5561 裝置，包括一個(gè)精密的壓阻式壓力傳感器和一個(gè) 51 單片機(jī)。運(yùn)用溫度傳感器進(jìn)行溫度補(bǔ)償,提高了測量的精度。在硬件電路的基礎(chǔ)上,用 C 語言編制了具體實(shí)現(xiàn)各個(gè)功能的程序。在電壓的支持下，提供一個(gè)壓力和溫度的 16 位數(shù)據(jù)。它采用三相串行接口進(jìn)行交流。精 巧 的 結(jié) 構(gòu) ， 簡 單 的 調(diào) 校 和靈 活 的 安 裝 方 式 為 用 戶 輕 松 地 使 用 提 供 了 方 便 。本文介紹了利用傳感器與單片機(jī)測量溫度和壓力的原理。通過傳感器向單片機(jī)輸入數(shù)據(jù)，經(jīng)過單片機(jī)處理，從而得到溫度和壓力值。關(guān)鍵詞：C 語言。MS5561。 壓阻式壓力傳感器；單片機(jī)Based on the design of MS5561 level sensorABSTRACTBased on SCM and C language level sensor design, can be used for petroleum chemical industry, metallurgy, electric power, pharmacy, water supply and drainage, environmental protection. Use level sensor is a kind of effective contact measurement methods, and can be widely used in various measurements of occasion. With high precision, low power consumption, the temperature pensation and digital correction, without external ponents, moistureproof protect, pressure and temperature measurement. This level sensor using MS5561 device, including a precision piezoresistive pressure sensor and a 51 SCM. Using temperature sensors for temperature pensation and improve the measuring precision. In the hardware circuit, and on the basis of C language of the concrete realization each functional program. In voltage support, provide a pressure and temperature of the 16 bits of data. It adopts threephase serial interface munication. Exquisite structure, simple adjustment and flexible installation way for users to easily use provides convenient. This paper describes the use of sensor and singlechip microputer measure temperature and pressure principle. Through the sensor chip to enter the data and single chip, and get a temperature and pressure.Key words: C。 MS5561。 Piezoresistive pressure sensor。 Singlechip microputer目錄摘要 ........................................................................................................................IABSTRACT..........................................................................................................II1 緒論 ...................................................................................................................1 背景 .................................................................................................................................1 液位測量技術(shù)概況 .........................................................................................................1 各類傳感器的介紹 .........................................................................................................1 接觸式的液位測量 .................................................................................................1 非接觸式液位測量 .................................................................................................4 國內(nèi)外液位傳感器的現(xiàn)狀分析 .............................................................................6 研究本課題的意義 .................................................................................................7 本課題的主要研究內(nèi)容 .................................................................................................82 基于 MS5561 的液位傳感器的硬件設(shè)計(jì) ........................................................9 系統(tǒng)設(shè)計(jì) .........................................................................................................................9 CPU 介紹 .................................................................................................................9 CPU 的外圍器件簡介 .............................................................................................9 液位傳感器的原理 ........................................................................................................10 MS5561 的管腳 .....................................................................................................10 485 電路設(shè)計(jì) .........................................................................................................13 程序下載接口設(shè)計(jì) .............................................................