智能低功耗无磁热量表的研制

【作者】 王廷峰；

【导师】 唐祯安；

【作者基本信息】 大连理工大学 ， 测试计量技术及仪器， 2004， 硕士

【摘要】 本文设计了一种用于计量一定采暖期内用户消耗热量的智能低功耗无磁热量表。该热量表主要由流量传感器、配对温度传感器、计算显示器(MCU和LCD)三部分构成。 城市集中供热的能源浪费及不合理的按住宅面积收费问题日益突出，已经制约了城市集中供热的进一步发展。热量表是实施城市供热体制改革，推行按热量收费的关键设备，对热量消耗全部智能计算，以用户实际耗用热量为计量收费依据。热量表作为热力公司向每一位住户收费的依据和手段，不仅已广泛被用户所接受，而且由于用热量与费用直接相关，也加强了住户的节能意识。用热量表进行热计量更为科学、更为合理，既方便用户，又便于管理。而本课题研究的目的就是为人们提供一种能够准确测量热量消耗，解决收费难的智能仪表。 本文介绍的无磁热量表利用自己设计的LC振荡器作为流量传感器，Pt1000作为温度传感器，分别将流量信号和温度信号经比较、放大、A／D转换成电信号输出：利用TI的16位MSP430F135单片机测量数据，计算流量、热量，判断各种故障；利用EEPROM-93C46存储重要数据，以防止掉电数据丢失；最后利用字符型液晶显示热量、流量、温度以及各种故障信息和用户信息等。此外，本设计还对功耗进行了分析讨论，给出了软硬件设计方案。 本文设计的无磁热量表数据观察方便且易于操作、低功耗、高精度、通用性强、性能可靠，达到国家2级表标准，能为用户和管理部门提供准确的耗热信息。更多还原

【Abstract】 This paper introduces a low-power non-magnetic heat meter that measures heat consumption of user in heating period. This heat meter mainly consists of flow sensor, temperature sensors and MCU.The problem of energy waste as result of urban central heating and unreasonable charge according to the areas is outstanding day by day. This problem has already restricted the further development of urban central heating. The heat meter is crucial equipment which implements system reform of urban heat supply and charges according to heat. It measures and charges on the basis of the user consumption heat actual. The administration adopt heat meter to measure heat that not only facilitates the users, but easy to manage. The purpose of researching the subject to offer users a kind of intelligence instrument that can accurately measure heat consumption and solve the difficult of charging.The heat meter that this paper introduced adopts LC oscillator as the flow sensor, Pt1000 as temperature sensor. The signal of flow and temperature is separately magnified and compared to send MCU. The MCU adopts MSP430F135, it is used for measuring data, calculating flow and heat and judging various kinds of troubles. The important data are stored in EEPROM-93C46 to avoid losing. All information may be displayed on LCD. Besides, we analyse and discuss the consumption, and also give out the plan of software and hardware design.The heat meter that we designed has many virtues, such as low-power, high accuracy, easy to operate, strong commonability and reliable performance. This heat meter reaches second standard in the country and it can offer the accurate heat consumption information for the users and administrative department.更多还原