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2022-08-08
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Infrared thermal imagers, sensors and other instruments are used in the monitoring of West Lake Cultural Relics

the body monitoring of West Lake cultural landscape cultural relics, referred to as West Lake Cultural Relics monitoring, is an important part of fulfilling China's obligations under the Convention on the protection of world cultural and natural heritage and completing the task of West Lake World Heritage monitoring. After more than five years of exploration, Hangzhou Bureau of garden and culture in Zhejiang Province has gradually formed a set of West Lake Cultural Relics monitoring system composed of three levels, namely, daily patrol monitoring, professional and technical monitoring and automatic instrument monitoring

professional technology monitoring

professional technology monitoring is the testing work carried out by professionals carrying portable instruments to the cultural relics site on a regular basis. The work content includes: environmental factor measurement of representative cultural relics, disease observation, physical examination of physical, chemical, structural, performance and other aspects of cultural relics. The work was completed by the cultural relics protection laboratory of Zhejiang University in the form of technical services entrusted by the Hangzhou Municipal Bureau of parks and culture and the West Lake world cultural heritage monitoring and management center

according to the deployment of Hangzhou Municipal Bureau of garden and culture, the cultural relics protection materials laboratory of Zhejiang University takes Kaihua Temple site, Qingxing Palace site, qiantangmen site, simaguang family diagram stone carving, Feilai peak stone carving, Lingyin Temple Scripture building and other six heritage sites as examples, and uses special instruments and equipment to carry out regular and fixed-point monitoring, record data, and summarize and evaluate according to the established technical regulations for the monitoring of cultural relics of West Lake cultural landscape. At present, the monitoring contents include: the detection of environmental elements around cultural relics, the detection of the surface appearance and disease of cultural relics, the detection of the strength and structural properties of cultural relics materials, the detection of the surface hydraulic properties of cultural relics and the detection of microorganisms on the surface of cultural relics. A total of 16 kinds of instruments are used, and more than 3000 data are collected every year

environmental element detection includes environmental factors such as air temperature, air humidity, light, ultraviolet illumination, carbon dioxide, sulfur dioxide, nitrogen dioxide content around the heritage site. Portable high-precision instruments are mainly used for detection

the surface appearance and disease detection of cultural relics include fixed-point photography, micro camera recording, crack width measurement, cultural relics surface discoloration, pollutants, water seepage observation, microbial reproduction and other surface abnormalities, which should be recorded in a timely manner

the strength and structural properties of cultural relics materials include shore hardness, surface roughness, ultrasonic and rebound strength at the location of the distribution

the surface hydraulic properties of cultural relics include microwave humidity at different depths, infrared thermal imager detection, etc

microbial detection on the surface of cultural relics includes sampling of various typical microorganisms, sequencing analysis of high-throughput molecular biology, and Research on the mechanism of community action of microorganisms that seriously threaten cultural relics

instrument automatic monitoring

with the development of IOT technology, many monitoring tasks that originally need to be completed manually can be completed automatically by instruments using special alloy materials for high-end equipment. Under the guidance of professionals, automatic instrument monitoring has been implemented for some important cultural relics in the world heritage, which actively calculate the maximum force, tensile strength, compressive strength, yield point and other key parameters of the West Lake world. For example, an automatic monitoring system has been established in the statue of flying peak, and three representative statue areas have been selected as monitoring points

monitoring point 1 is the Buddha image. The installation equipment includes air temperature sensor, air humidity sensor, soil temperature sensor, soil moisture content sensor, wind direction sensor. At the end of loading, the loading handle should be placed at the unloading position, wind speed sensor, atmospheric pressure sensor, rain sensor, rain pH sensor, carbon dioxide sensor, and automatic photographic acquisition system

monitoring point 2 is a relief group of Buddhist monks in longhongdong district. The installation equipment includes air temperature sensor, air humidity sensor, soil temperature sensor, soil moisture content sensor, sulfur dioxide sensor, nitrogen dioxide sensor, carbon dioxide sensor, automatic photographic acquisition system, etc

monitoring point 3 is bubag Maitreya on the South Bank of Lengquan Creek and the eighteen Arhats around it. The installation equipment includes water level sensor, carbon dioxide sensor, air temperature sensor, air humidity sensor, soil temperature sensor, soil moisture content sensor, automatic photographic acquisition system, etc

all instruments have been calibrated in advance, and the monitoring data and images are recorded every two hours. All collected data are managed by paperless double backup and finally displayed on the wall display screen of the cultural protection department. The software realizes the display in the form of K-line view. All kinds of data can be combined and displayed freely, and the comparison between data and image is carried out, so that the monitoring personnel can visually see the real-time changes and relative differences of data, which is convenient for analysts to identify quickly. At the same time, an automatic early warning and alarm management system is established, which can set the email address alarm and number SMS alarm of supervisors or maintenance personnel

the West Lake world cultural heritage monitoring and management center in Hangzhou will take the lead in data collection, information notification, annual report and protection measures. The technical guidance mainly relies on the cultural relics protection laboratory of Zhejiang University. At present, the three-level monitoring data and indicators basically meet the requirements of the general platform for monitoring and early warning of China's world cultural heritage by pressing the "slow rise" key, which provides information support for making the cultural relics of the West Lake Cultural Landscape in Hangzhou in the best state and doing a good job in preventive protection

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