At first , the propagation and influence of stress wave on the top of the pipe pile were discussed in the paper and a formula was obtained about the time difference between two initial signals which were received from two different points 本文首先研究了應(yīng)力波在管樁頂面的傳播及其影響,并提出了計(jì)算不同點(diǎn)激勵(lì)速度峰值時(shí)間差的關(guān)系式。
Complete the bi - directional data communication between the hardware and the microcomputer . ( 3 ) design the cpld ( complex programable logic device ) processing circuit to preprocess the initial signal in the data acquisition module ( 3 )下位機(jī)采集模塊部分,在一塊cpld ( complexprogramablelogicdevice )集成芯片上燒寫了設(shè)計(jì)的電路,能夠?qū)斎朐夹盘?hào)進(jìn)行預(yù)處理。
Arranged signal activating lock circuit and time - base control circuit in the sound wave receiving circuit to take the initial signal of back wave as the valid one in the cycle , thus to improve the ratio of signal vs . noise and detective precision 在超聲波接收電路中設(shè)有信號(hào)觸發(fā)鎖定電路和時(shí)基控制電路。實(shí)現(xiàn)以各探頭中最早收到的回波信號(hào)為本檢測(cè)單元的有效信號(hào),有效提高信噪比和檢測(cè)精度; 4
The effects of the variations of the initial signal proteins concentrations on the output of this system are also studied . the study demonstrates that the jak - stat signaling pathway is robust with respect to its signal time and signal duration , but sensitive with respect to its signal amplitude 我們主要考察了細(xì)胞信號(hào)轉(zhuǎn)導(dǎo)過程中三個(gè)重要的特征量的變化,即“信號(hào)時(shí)間” signal time “信號(hào)持續(xù)時(shí)間” signal duration以及信號(hào)幅度signal amplitude 。
The temperature sensing circuit adopts current - output mode taking pnp substrate transistor as temperature sensing device . according to the theory of the bgr , ptat and ctat can be generated from the circuit , and the former one is regarded as the initial signal which correlating to the temperature 溫度傳感電路以襯底pnp型bjt作為感溫元件,采用電流輸出模式,按照帶隙基準(zhǔn)原理獲得與絕對(duì)溫度成正比( ptat )電流以及與絕對(duì)溫度成反比( ctat )電流,并以前者作為與溫度相關(guān)的原始電信號(hào)。