During the period of measurement , the transduction circuits transform the differential pressures , the absolute pressures and the temperatures received by the sensors into the voltage signals , and then , the voltage signals are transformed into digital signals by the a / d convertor . the mcu processes these digital signals and calculates the cumulation of the flow . finally the totalizers contact with the pc by rs - 485 bus to form a distributed measuring network 在测量过程中,系统以流量计节流所获得的差压信号作为主信号、绝压和温度信号作为补偿信号进行流量积算,这三种信号分别由相应传感器感知后,经各自的物理信号测量电路转换为电信号,再由a / d转换模块转变为数字量,交微控制器进行处理、积算。
主: host信号: signal; semaphore; gun主信号楼, 控制信号楼: control signal box主信: morinobu; the vital message主信号处理技术: native signal processing主信号脉冲序列: main signal pulse sequence主信标: leading beacon; main beacon; master beacon主信道: m main; main channel非自主信托: non-discretionary trust买主信用: buyer's credit主信息块: mib master information block主信息文件: main message file主信用证: master letter of credit主信息处理机: host information processor主信道, 主通道, 主通路: main channel信号: signal; semaphore; gun 音频[响] 信号 an audible signal; 臂板信号 [铁道] semaphore; 灯光信号 light signal; 识别信号 identification signal; 遇难信号 [航海学] distress signal; sos; 杂乱信号 [无线电] hash; 火车切不可越过危险信号。 a train must not pass a signal that is at danger. 信号是用旗或灯发出的。 signals are made with flags or lamps.; 信号弹 [工业] signal flare; 信号灯 signal lamp [light]; alarm lamp; light; signallight; winker; call lamp; blinker; telltale lamp; 信号发生器 signal generator; generator; producer; 信号枪 signal gun; signal piping; flare gun; flare pistol; pyrotechnic pistol; ground signal projector信号,发信号: signal信号板信号: panel signaling信号的信号: signals signal信号符号,信号: signal信号, 发信号, 用信号通知: signal1信号: one signalgps信号: gps signalskp信号: kp signalq信号: q signal