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In this paper we describe the realization of a magneto-dependent sensor applied in the Optical Pumped Magnetometer. Furthermore, a new method of exciting helium light source is put up with which can reduce the time of exciting. Preliminary experiments and parameters are presented in order to optimize the sensor and finally measured value by this sensor is in accordance with that obtained by compared...
A resistively-inductively loaded (RL-loaded) bowtie antenna for impulse ground penetrating radar (GPR) is theoretically and experimentally investigated. The antenna has been designed for transmission of Gaussian-like pulses with duration of 6 ns (100 MHz central frequency). As ultra-wideband (UWB) antenna, it is suitable for low-resolution GPR that can be used in tunnel geology forecast. The simulating...
Emotion recognition based on physiological signals which can reflect peoplepsilas real emotion correctly is more robust and objective than any other ways, so it has a bright prospect of research and applications. This paper may firstly carry out the work of feature extraction for electrocardiogram (ECG) obtained from 391 subjects containing two emotion states (joy, sad) by the method of discrete wavelet...
Magnetic sensor is widely used in electromagnetic field to get the real weak magnetic field intensity. Because the sensor outputs voltage and the parameter applied in electromagnetic in fact is magnetic field intensity, it should to be known precisely relationship between output voltage of the sensor and the magnetic field, that is to say, the sensor should be calibrated before applied in electromagnetic...
Emotion recognition based on physiological signals has a significant future of research and applications. However, in the process of emotion recognition, it is difficult to obtain the most significant feature combinations. Dual-Structure Particle Swarm Optimization (DSPSO) is applied to select emotion features of physiological signals so as to improve the recognition rates in this paper. K-Nearest...
To obtain sensor sensitivity to the real weak magnetic field intensity in field so that it can be used in hybrid-source magneto tellurics, a kind of indoor calibration method of magnetic sensor is introduced. In this paper, with calibration conditions being satisfied, a calibration system was designed and results error was analysed. Because of the power-line disturbance, magnetic shielding and its...
Introduce a wireless intelligent speech control system based on DSP as speech control model and PIC microcontroller & wireless transmit chip CC2420 as the ZigBee wireless transmit model. Hardware design, Speech Recognition Algorithm and Program design are given in this paper. Especially Speech Recognition Algorithm is optimized toward DSP and ZigBee Protocol Stack is reduced. Independent, high...
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