我们根据从差压信号推算流量的原理，试制了一个非定常流量计。
On the basis of a measurement principle transforming 'differential pressure into the flow rate, a flowmeter is made on trial.
熵是信号序列信息量的表征，作者在对差压信号的分析中提出了两种基于熵概念的特征——香农熵和阈值熵。
Entropy is a measure of information in signals. Based on the conception of entropy, two new features-Shannon entropy and Threshold entropy are proposed in flow regime identification.
研究了差压波动信号与两相流系统参数之间的关系。
Relations between differential pressure signal and two-phase flow parameters are studied in the dissertation.
系统压力或差压变送器信号输出采用HART现场总线协议，数字信号传输通过RS485进行MODBUS通讯。
HART field-bus protocol is used in output of system pressure or differential pressure transmitter, digital signals is transmitted with MODBUS via RS485.
本文利用差压波动信号对水平管气液两相流流型辨识问题进行了研究。
Flow regime identification in horizontal gas- liquid two- phase flow using differential pressure signal is investigated in this paper.
采用压差波动法测定流型，获得了不同流型下的压差波动信号。
Pressure difference fluctuation is employed to identify flow pattern and pressure difference fluctuation signals of various flow pattern are obtained.
采用小波变换分析水平管流上的压差信号，根据段塞流与波状流的小波分析特性，可容易地识别流型。
The differential pressure signals of flow in a horizontal pipe are studied by wavelet analysis. The flow pattern can be recognized easily according to the characteristics of plug flow and wave flow.
基于高阶统计量技术，提出了一种气液两相流差压波动信号分析的新方法。
The main works are listed as follows:1) Based on higher-order statistics technique, a new method for differential pressure fluctuation signal analysis of gas-liquid two-phase flow is proposed.
正比于压差的信号（称为测量值）通过“压差变送器”被送至记录控制器。
A signal (termed the "measured value") which is proportional to the pressure difference is then transmitted by means of a "differential pressure transmitter" to the recorder-controller.
压电式对于管道振动十分敏感，而在一定范围内差压式的输出信号几乎不受管道振动干扰的影响。
Third, the piezoelectric method is sensitive to pipe vibration, whereas the differential-pressure method is hardly affected by this kind of disturbance to some extent.
压电式对于管道振动十分敏感，而在一定范围内差压式的输出信号几乎不受管道振动干扰的影响。
Third, the piezoelectric method is sensitive to pipe vibration, whereas the differential-pressure method is hardly affected by this kind of disturbance to some extent.
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