A resolution method in software is applied to calibrate zero point and full scale of the circuit . software approach to nonlinear correction for sensor and circuit is presented . therefore system error is eliminated , and measurement accuracy of temperature is improved . the signal of acidity electrode is detected by a differential amplifier circuit , which consists of operational amplifiers tlc2254 with high input impedance and low drift 采用桥路和单运放差动放大电路对温度传感器信号检测放大，软件校正温度传感器和测量电路的非线性，软件校准测量电路的零点和满度，消除测量电路的系统误差，提高补偿温度的测量精度；采用高阻、低漂移运放tlc2254组成高阻差动放大电路用于酸度电极信号测量。
This thesis makes a new digital controller with two pieces of tms320f240 dsp base on the old digital controller in our lab , the new controller have two kinds of functions . firstly , two dsp can deal with all signal together , secondly , when a dsp is damaged and does n ' t work , another dsp will immediately take actions and deal with all signal alonely . which makes the system runs in gear 经过调试，该数字控制器不仅可以实现两dsp分担处理传感器信号的功能，即在两芯片都正常工作的情况下，其中一芯片处理两路信号，另一芯片处理余下的三路信号；同时该设计还具有容错功能，当其中某一芯片出现故障而不能处理信号时，另一芯片将迅速做出反应并独立肩负起全部信号的处理任务。
Thirdly , in the environment of labview , several kinds of vis used for sensor signal test are designed , including wave generation , time domain measurement , filter disposal , frequency analysis , etc . after that , wavelet analysis in the application of one - dimensional signal de - noise is studied , threshold and translation invariance wavelet de - noise are realized , and wavelet de - noise vi for zero drift signal of the fiber optic gyro in fcs is designed using labview 接着,在labview环境下开发了多种用于传感器信号测试的虚拟仪器,具有波形发生、时域测量、滤波处理、频谱分析等多种功能。随后,研究了小波分析在一维信号消噪中的应用,实现了labview环境下的阈值法和平移不变量法小波消噪,并利用labview设计了飞控系统中光纤陀螺零漂信号的小波消噪仪。
Hardware research focuses on interface circuit including simulating sensor simulating actuator and monitoring power . software design consists of data collection commutating software graphics interface and data processing . the project can meet the requirement for engineering application through primary testing 其硬件研究主要是接口电路设计，包括发动机传感器信号模拟、执行机构信号模拟、激励电源监测；软件研究包括数据采集软件、网络通讯软件、人机交互界面和数据处理软件设计。
Modbus transducer is the key device in the system and is used to offer power supply of pressure and temperature sensor , to collect signal , to linearizate and compensate temperature , to calculate density , volume and mass , to transmit data to modbus network , and display the data . so the modbus transducer is a multi - parament measurement , intelligent control device which can manage multi - signal 变送器是系统的核心设备，其作用是为油罐温度、压力、液位、可燃气浓度等传感器供电，采集传感器信号并进行线性化、温度补偿等处理，完成密度、体积和质量等参数计算，将数据输出到modbus现场总线测控网络，根据需要现场显示计测量参数。
Based on the sufficient analysis of ppf control rule , the research into the algorithm combination between fuzzy control and ppf control is made to develop the intellectual ppf control system and design automatic tracking system to the edge of strip steel by the step motor , the signal collecting circuit with the capacitance sensor , servo magnifying circuit , and interface circuit are designed also 本文在充分分析ppf的控制规律的基础上，研究了模糊控制与ppf控制算法结合，组成智能ppf控制系统，设计了步进电动机带钢边缘自动跟踪系统，电容传感器信号采集电路，伺服放大电路及接口电路。
At last , we introduced the design of demodulation device of white - light interferometer modulation / demodulation fiber - optic fabry - perot sensor . we provide the ways to improve the property of sensor . we performed a experiment to test the capability of our sensor to strain gauge , and applied our sensor into study on carbon fiber material temperature property 最后讨论了白光干涉型光纤fp传感器信号解调装置的设计，提出了改进该种传感器性能的方法，并对该传感器系统与电阻应变片作了对比实验，将该种传感器用于了碳纤维材料的温度性能实验中。
2 . to meet the demands of establishing a practical control system , this paper analyzed the main sensors " construction , performance , and work theory in a dynamic positioning system , discussed the output format of the sensors " signals and the feature of the signals " noise , introduced the common thrusters , and established the thruster ' s mathematics model 2 )为满足建立实际控制系统的需要，分析了动力定位系统主要传感器的构成、性能和工作原理，讨论了传感器信号的输出形式及信号噪声的特点，介绍了常用推进器，建立了推进器数学模型。
