signal data recorder 中文意思是什麼
signal data recorder
解釋
信號數據記錄器-
The principle of vibrator is to introduce scattered energy to underground in a comparatively long time, and collect the energy through correlation and compress it into a narrow pulse. the portable high - frequency vibrator system, developed by key lab of geo - exploration and instrumentation ( jilin univ ), ministry of education, generates chirp signal and accumulates energy through a long - time bestiring. according to the characteristics of vibrator, the seismic recorder that operates on - line with vibrator must have these functions as follow : first, it must have the ability of recording a great quantity of data. second, it must have assistant channels to sample reference signal. third, it must have the function of data correlation in real - time
可控震源利用可控的小能量、長時間激發波來實現沖擊震源瞬時產生的大能量激發波。在利用可控震源進行地震勘探時，要求地震儀長時間記錄地震信號，這對地震儀的采樣長度提出了很高的要求。受存儲量和數據傳輸速度的限制，絕大多數地震儀很難對如此大的數據量進行記錄，同時，可控震源要求地震儀有兩個輔助通道並且具有數據相關功能，目前國內還沒有出現滿足要求的地震儀產品。 -
This system is exploited completely according to national standard of vehicle traveling data recorder, can implement all of the function of the national standard of vehicle traveling data recorder, including date, time, car speed, mileage, start time, stop time, driving time, over speed, overtime, alarm of over speed and overtime, status identify of ic card, and many kind of status of on - off signal, including on - off vehicle door, brake status, turn signal status, dipped headlight and high beam etc.
本系統就是完全依照汽車行駛記錄儀的國家標準而開發的，目標是實現國家標準中規定的所有汽車行駛記錄儀應該達到的功能指標，包括可靠記錄日期、時間、車速、行駛里程、開車時刻、停車時刻、行駛時間、超速時間、超時時間、超速超時告警、 ic卡身份識別等信息和車門開關、剎車狀態、方向燈狀態、近/遠光燈等各種開關信號的狀態的功能。 -
This paper gives a time - synchronization technique bases on gps time service signal which is used in broad band seismic recorder 。 by world coordination time offered by gps - - utc ( usno ), adjust local clock base on gps signal, gain high nicety clock signal, clock precision reachs 10 - 6 。 this clock is the time source of broad band seismic recorder, bring the whole seismic recorder works in same time base. 1pps time base with high stability can be used as in - phase, spring, time and start - stop of every collection mode, while the scale under second make a precise time mark to receive data of broad band seismic recorder
針對接收機中gps信號的噪聲進行kalman濾波軟體處理， kalman濾波可以對gps信號與本地晶振時鐘的時差數據在大噪聲中進行平滑，在較短時間內估計出高精度的時差數據。系統消除了gps秒脈沖信號的ms級隨機誤差，把晶振秒脈沖的長期穩定度鎖定到gps信號的穩定度上;在gps信號失效時給出了可行措施，能夠保證在任何情況下產生一個穩定、高精度秒脈沖信號，誤差在1 s內。 -
The thesis aims to give a scheme of designing a 48 - channel collected seismic recorder based on pci bus, and a testing machine has been completed in the basis of the scheme. pci bus provides a high data transfer speed, which solve the problem of transfering a mass of data in a short period of time ; moreover, two assistant channels are provided to sample reference signal ; the function of data correlation in real - time is also provied in the software of the instrumental system
論文論述了pci總線功能介面的實現和數據採集模塊的設計，給出了利用pci9054介面晶元設計pci介面的詳細過程，並利用driverstudio為pci數據採集系統編寫了設備驅動程序;在數據採集模塊的設計中，主要完成的工作有多通道數據採集、浮點放大以及系統的低噪聲設計，並利用cpld設計了整個系統的時序邏輯。 -
According to the signal features of various automatic block systems, a signal singularity detection method based on the wavelet analysis technique is adopted in this paper to carry out singularity detection for the data recorded by the cab signaling recorder
摘要根據鐵路目前各種自動閉塞制式的信號特點，利用基於小波分析技術的信號奇異性檢測方法，通過機車信號記錄器數據分析處理軟體對機車信號記錄器所記錄的波形信號進行奇異性檢測。 -
Firstly, its sample period of 8 channels is 1 second. secondly, its sensitivity is can obtained 4 / 10000, its precision is about 1 / 1000. besides it can exchange information between recorder with the computer control by powerful network communication ( including setting signal, changing mode, real - time transmitted data )
通過實踐，本設計達到了設計要求：其8通道信號的采樣周期為1秒，各通道間的完全隔離，系統靈敏度可以達到萬分之四，精度一般為千分之一，以及功能強大的網路通訊，可以輕松的實現上下位之間的完全信息交流（包括信號設定，方式改變，實時數據傳輸等） 。
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