地震计智能恒温系统的设计与实现

当外界温度急剧变化时,拾震器内部机械结构会受到一定影响,易产生靠摆或零漂等问题。通过温度实验测试研究温度对甚宽频地震计性能影响,并通过研制地震计智能恒温设备来解决此类问题,实时监测防护罩内温度并与已设定温度上下限进行比较,当监测温度高于设定上限温度时启动半导体制冷装置;当监测温度低于设定下限温度时则启动加热装置。为防止防护罩内系统温度急剧变化造成拾震器的机械性故障,加热制冷功率均从最小值开始进行缓慢调整。设备可远程通过网络进行各参数的修改,并可远程启动或关闭加热或制冷装置及其他故障设备。此设备的研制成功可使拾震器长期在稳定的温度环境中工作,减少其各类故障,同时也将最大限度地增加地震仪器的使用年限。

Design and Implication of an Intelligent Constant Temperature Control System of Seismometers

The seismic observation system is a multi-disciplined integrated observation technology integration system. The influence of temperature on the material properties and component parameters of seismic observation instruments is a serious problem. When the external temperature changes rapidly, the mechanical structure of seismometers is affected and generates problems such as mechanical friction or zero drift. In this study, we use a temperature test to measure the effect of changing temperature on a very broadband seismometer, then design and develop an intelligent temperature control system for it. This system can monitor real-time temperature in the seismometer shield and compare it with the upper and lower limits of a set temperature. A semiconductor refrigeration device initiates when the monitoring temperature is higher than the upper limit, and heating equipment initiates when the monitoring temperature is lower than the lower limit. Because violent changes in temperature can damage the device, we prevent the system temperature in the seismometer''s shield from changing rapidly. Through the system, we can remotely modify the parameters throughout the network, and control the heating and cooling devices or other seismic instruments. This equipment avoids the mechanical failure of seismometers caused by drastic changes in the outside temperature. It can help maintain a stable temperature environment for the seismometer over a long time, extend its lifetime, and reduce performance faults.