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在此新型海底热流仪中,有一台 RCA 微型计算机作为控制器。微处理机的使用使该仪器有许多新颖的特点和进行实时测量的功能。此机采用琴弓形设计,插入管管长7.5m,14个热敏电阻。模数转换器16位,总分辨率优于万分之五开氏度,测程大于20度。电平位移和零点漂移均自动消除。在少于三秒钟的时间内,该机对每个热敏电阻进行16次数据采样并计算测得值。数据通过微机的串行端和标准型的电话调制解调电路加于水声器,用声学遥感技术传输到船上,数字式数据和其他信息,被船上的遥感接收,解调后转入一台便携式电子计算机。海底仪器的一切工作状态信息和实测数据都实时地显示在计算机终端的荧光屏上,船上的科学家可以对海中的测量过程一目了然,船上计算机还对测得数据进行现场的热梯度和周围泥沙的热导率计算,在拉不拉多海的海上试验中,当水深大于4000m 时,传输误差为万分之一左右。
In this new subsea heat flow meter, there is an RCA microcomputer as the controller. The use of microprocessors gives the instrument many novel features and real-time measurement capabilities. This machine uses a bow-shaped design, insertion tube length 7.5m, 14 thermistors. Analog-digital converter 16, the total resolution is better than five ten thousandths Kelvin, measuring more than 20 degrees. Level shift and zero drift are automatically eliminated. In less than three seconds, the machine performs 16 data samples per thermistor and calculates the measured value. The data is applied to the hydrophone via the serial port of the microcomputer and the standard telephone modem circuit, transmitted to the ship using acoustic remote sensing technology, digital data and other information, received by the remote sensing on board, demodulated and transferred to a Portable computer All working status information and measured data of the subsea instrument are displayed in real time on the screen of the computer terminal. Scientists on board can clearly see the measurement process in the sea. The onboard computer also performs on-site thermal gradients and the heat of sediment around the measured data Conductivity calculation, in the pull the sea and pull the sea test, when the water depth is greater than 4000m, the transmission error of about one ten thousandth.