文档介绍：单片机开发与应用中文核心期刊《微计算机信息》( 嵌入式与 S OC ) 2008 年第 24 卷第 3-2 期
文章编号:1008- 0570(2008)03- 2- 0120- 03
Design of the Measuring Instrum ent to the liquid level
Based on MSP430 SCM
YANG XIAOJ ING WANG ZHIQIANG CHEN PING
Abstract:This paper introduced ponents, principle and the hardware and software design of the multiplexing measuring and
control instrument to the liquid level that is based on MSP430 SCM. This system is made of pressure sensor, signal processing cir-
cuit, ic valve , output driving circuit, Chinese character LCD, keyboard, optic alarm circuit and MSP430MCU, and real-
ized Liquid level automatic monitor , out range alarm and online function.
Key words:Liquid level measurement,Master- munication,M SP430SC M,V/F convert
Class number by Chinese Library Classification:TP273 Literature identification code:B
技 choice munication band rate can make band rate factor use
1 Preface decimal without restriction, that is, it can use any frequency value
术 The measuring and control instrument to the liquid level of crystal oscillator in permitted range of band rate. Moreover,
belong to Intelligent Instrument (an instrument have used micro- MSP430 MCU integrated temperature sensor inside, so it can be
创 processor), had developed in 1970s. It' s an intelligent product realize pensation to pressure sensor used by liquid
that integrated measuring and control, whic