基于远程湿度传感器的湿度监测系统-------外文翻译.doc
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基于远程湿度传感器的湿度监测系统-------外文翻译,abstract the moisture monitoring system being developed provides a network of monitoring cells, centrally monitored, to give early warning of potentially damagi...
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Abstract
The moisture monitoring system being developed provides a network of monitoring cells, centrally monitored, to give early warning of potentially damaging failures of building components, generating high and persistent moisture levels, which are known to cause decay and damage to timber and masonry. The most critical aspect of system design is the useful range of the sensors, and their performance and reliability are crucial to a low maintenance installation and long-term customer satisfaction.
The paper describes the development of a new moisture sensor to meet the requirements with respect to accuracy; no species calibration is needed. The sensor consists of two pairs of parallel electrodes, equivalent to a network of six resistances, providing the potential for measuring moisture gradients. Electrodes are embedded with a cylindrical, high durability wood buffer. Several existing measurement techniques are eva luated. Performance of a prototype used in connection with a datalogging system is described. Results demonstrate the possible benefit to the construction industry in all situations where there is the need for an accurate long term measurement of the moisture content (MC) of timber, for example, in purchase, treatment, construction and surveying.
Key words: Moisture sensors, timber, instrumentation
1 Introduction
Moisture is associated with a range of problems in timber. For example, warping, shrinkage and distortion in service can occur where substantial variations exist between the installation and final moisture content (MC) [1].The resistance to decay is severely affected by the MC of timber as the colonisation of fungi is strongly dependent on the MC. For example, if the MC is above around 25% the probability of fungal decay increases dramatically, especially where the timber is classed as “nondurable” [2].Hand-held moisture meters are frequently employed for monitoring
摘要
通过发展湿度监测系统，提供一个监测单元的网络，集中监控，来对那些建筑构件的可能造成损害的失败提前预警，如持续的高湿度，这是众所周知的导致木材和砖石腐败和破坏的原因。系统设计最重要的方面就是传感器的有用范围，它们的性能和可靠性对低维修安装和长期客户的满意度来说是至关重要的。
本文描述了一种新型湿度传感器的发展来满足准确度的需求；没有种类刻度是必要的。该传感器由两对平行电极组成，相当于有六个电阻的网络，提供了测量湿度梯度的潜力。电极嵌入了一个圆柱形的、高耐久性的木材缓冲区。评估了当今的几种测试技术，我们描述了一个用于连接数据采集系统的产品原型的性能，结果表明，为了建筑行业的有可能的利益，在所有情况下，有必要对木材的水分含量进行准确、长期的测量，如在购买、治疗、建设和测量方面。
关键字：湿度传感器、木材、仪器
1.简介
木材中的水分和很多因素有关。如在装置和终极含水量之间存在的实质的变化，会引起翘面、收缩、扭曲变形[1]。抗衰减性严重地受到木材水分含量的影响，就像细菌的移植强烈地受到水分含量的影响。例如，如果水分的含量在超过25%左右时，真菌的衰减就会急剧增加，特别是那些被归类为“不耐用”的木材[2]。手持式水分测量仪经常被用于监测水分含量，但是由于单个的读数只能在选定的点采取，测量就只能局限于地表或接近地表的地方。对于耐抗类型的仪器，如果木材种类和温度校正，忽略颗粒定位和可能的湿度梯度，测量值将会存在很大的误差。
对于大型和/或难以进入的地区来说，具有长期可靠性的湿度传感器小
The moisture monitoring system being developed provides a network of monitoring cells, centrally monitored, to give early warning of potentially damaging failures of building components, generating high and persistent moisture levels, which are known to cause decay and damage to timber and masonry. The most critical aspect of system design is the useful range of the sensors, and their performance and reliability are crucial to a low maintenance installation and long-term customer satisfaction.
The paper describes the development of a new moisture sensor to meet the requirements with respect to accuracy; no species calibration is needed. The sensor consists of two pairs of parallel electrodes, equivalent to a network of six resistances, providing the potential for measuring moisture gradients. Electrodes are embedded with a cylindrical, high durability wood buffer. Several existing measurement techniques are eva luated. Performance of a prototype used in connection with a datalogging system is described. Results demonstrate the possible benefit to the construction industry in all situations where there is the need for an accurate long term measurement of the moisture content (MC) of timber, for example, in purchase, treatment, construction and surveying.
Key words: Moisture sensors, timber, instrumentation
1 Introduction
Moisture is associated with a range of problems in timber. For example, warping, shrinkage and distortion in service can occur where substantial variations exist between the installation and final moisture content (MC) [1].The resistance to decay is severely affected by the MC of timber as the colonisation of fungi is strongly dependent on the MC. For example, if the MC is above around 25% the probability of fungal decay increases dramatically, especially where the timber is classed as “nondurable” [2].Hand-held moisture meters are frequently employed for monitoring
摘要
通过发展湿度监测系统，提供一个监测单元的网络，集中监控，来对那些建筑构件的可能造成损害的失败提前预警，如持续的高湿度，这是众所周知的导致木材和砖石腐败和破坏的原因。系统设计最重要的方面就是传感器的有用范围，它们的性能和可靠性对低维修安装和长期客户的满意度来说是至关重要的。
本文描述了一种新型湿度传感器的发展来满足准确度的需求；没有种类刻度是必要的。该传感器由两对平行电极组成，相当于有六个电阻的网络，提供了测量湿度梯度的潜力。电极嵌入了一个圆柱形的、高耐久性的木材缓冲区。评估了当今的几种测试技术，我们描述了一个用于连接数据采集系统的产品原型的性能，结果表明，为了建筑行业的有可能的利益，在所有情况下，有必要对木材的水分含量进行准确、长期的测量，如在购买、治疗、建设和测量方面。
关键字：湿度传感器、木材、仪器
1.简介
木材中的水分和很多因素有关。如在装置和终极含水量之间存在的实质的变化，会引起翘面、收缩、扭曲变形[1]。抗衰减性严重地受到木材水分含量的影响，就像细菌的移植强烈地受到水分含量的影响。例如，如果水分的含量在超过25%左右时，真菌的衰减就会急剧增加，特别是那些被归类为“不耐用”的木材[2]。手持式水分测量仪经常被用于监测水分含量，但是由于单个的读数只能在选定的点采取，测量就只能局限于地表或接近地表的地方。对于耐抗类型的仪器，如果木材种类和温度校正，忽略颗粒定位和可能的湿度梯度，测量值将会存在很大的误差。
对于大型和/或难以进入的地区来说，具有长期可靠性的湿度传感器小
