共查询到20条相似文献，搜索用时 31 毫秒
1.
介绍了地震地下流体台网概况、日常数据质量监控的流程与方法,总结了地震地下流体台网2017—2019年日常质量监控效果,以及在数据预处理、观测日志填写工作中出现的各种问题,并对典型问题进行了简要分析,旨在为监测人员的数据预处理和观测日志记录工作提供参考。 相似文献
2.
3.
《地震地磁观测与研究》2016,(1)
随着首都圈"九五""十五""中国地震背景场探测"等项目的建设完成,河北省已形成一个种类多、规模大的地震前兆监测台网,每日产出大量前兆观测数据,运行维护工作量逐渐增加。河北地震前兆台网运行质量监控系统从台网数据汇集及时性、工作日志填写完整性、工作日志汇集及时性、仪器运行状况、监控日报填写完整性、监控日报汇集及时性、错情的短信通知等方面,实现地震台网运行监控。根据工作需求,软件开发首次尝试主动监控方法,确保设备运行状态的正确性,减少人为监控错误的发生。该监控软件可以提高台网运行效率,对提高观测数据质量是一个重要的技术保障。 相似文献
4.
5.
6.
7.
8.
9.
10.
为了实现对不同种类、不同通讯规程的地震前兆观测仪器进行统一的数据采集、转换、存储、判断、报警功能。实现对不同连接方式的"九五"前兆观测仪器(通过协议转换器RS232-IP)和"十五"前兆观测仪器的监控,自动监控"九五"、"十五"各前兆仪器的网络通断;数据缺测以及水位数据阶变(例如水井水位的大幅变化);并自动报警(颜色报警、语音报警、声音报警、短信报警);方便查询自动记录监控结果;软件提供程序功能所需的各种配置。设计并开发一套前兆数据质量监控和水位阶变报警软件是非常必要的。介绍了前兆数据质量监控和水位阶变报警软件的组成、功能及运行情况。 相似文献
11.
Indoor Air Quality Monitoring Improving Air Quality Perception 总被引：1，自引：0，他引：1
Energy‐efficient ventilation strategies relating to good indoor air quality (IAQ) are a major task for building performance according to the requirements set by the energy performance of buildings directive (EPBD) in 2010. Applying demand‐controlled ventilation (DCV) in buildings, using sensors for IAQ control that enables variable airflow rates adapted to the actual indoor load conditions is one possibility to fulfill the requirements of adequate IAQ while reducing the energy consumption at the same time. CO2 concentrations above outdoors are generally used as an indicator for occupancy generated indoor air pollution and corresponding ventilation rates. The objective of this study is focused on a micromachined metal oxide semiconductor gas sensor module developed for IAQ control, based on volatile organic compound (VOC) detection. The sensor output was correlated with measured CO2 concentrations and quantified VOCs in 15 field scenarios. Energy demand and IAQ, applying the sensor module for DCV in an office, were compared to natural and time‐scheduled ventilation in the office. The study accentuates the need for DCV and proves the functionality of the sensor module for IAQ control at adequate comfort levels. Compared to time‐scheduled ventilation, 15% heating energy and 70% power consumption were saved with DCV. 相似文献
12.
13.
14.
Different approaches to studying hierarchical problems are compared with the use of a two-stage dynamic model of water quality control in the case of point pollution sources. Variations in pollutant concentrations in a watercourse are described by partial differential equations. The study embraces the cases of a single and multiple point pollution sources and different types of pollutants. 相似文献
15.
This report on a seminar of the Water Research Institute in Prague deals with the methodological aspects of the measurement and evaluation of data for the water quality in impoundments in the CSSR mainly with respect to: the assessment of external causes, especially of anthropogenic influences in the catchment area, on the water quality (eutrophication, humic substances, trace elements), of the multi-purpose utilization of impoundments, the classification and development of the water quality in impoundments, the intensified utilization of impoundments as well as the influences of sediments and the effect of piscicultural measures on the water quality. The paper is subdivided into the following chapters: system of measurement network and analysis, stratification number of samples, number of the criteria to be investigated, extreme periods of discharge, multi-purpose utilization of impoundments, eutrophication, fish stocks. 相似文献
16.
Quality Assurance in Environmental Monitoring 总被引：1，自引：0，他引：1
Over the past decade, there has been a growing awareness of the need for accountable quality assurance (QA) and control in chemical analysis. In environmental monitoring programs, especially those studying metal contaminants at trace and ultratrace concentrations in natural waters, the sampling, sample storage and sample preparation stages prior to analysis, represent potentially greater sources of error than the chemical analysis. The improvements in data reliability and detection limits when appropriate QA is employed, allow meaningful relationships between the measured concentrations and other physical and chemical parameters to be more reliably interpreted. Published data generated from both field and laboratory studies, frequently show no evidence of QA, yet such data are being used to formulate quality guidelines and as the basis for expensive management actions. So that only quality data forms the basis of regulatory action, it is essential that monitoring data not be published without demonstrable evidence of quality practices in all aspects of the monitoring exercise. 相似文献
17.
18.
19.
20.
Statistical Characteristics of Ground-Water Quality Variables 总被引：2，自引：0，他引：2