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To monitor the structure deformation of an underground tunnel,a high-resolution wireless inclinometer was developed in this paper,and the algorithm of temperature compensation and digital filter applied to the wireless inclinometer were analyzed.First,based on complex conditions in the underground tunnel,the hardware structure of the wireless inclinometer was presented combined the Micro-electromechanic System(MEMS) with the Wireless Sensor Network(WSN) technology and the software processes of wireless communication and PC interface of the inclinometer were described.Then the effects of different environment parameters on the inclinometer were discussed according to the conditions of underground tunnel such as wide-range temperature changes and frequent vibration.Finally,the temperature compensation and resistance to vibration interference were achieved,and the accuracy of the inclinometer was improved.Experimental results indicate that the precision of the inclinometer is 0.05° in the range from-30°to 30°,which meets the design requirements of the underground tunnel for the monitoring deformation.

为提高医用TC4钛合金表面熔覆羟基磷灰石（HA）涂层的植入稳定性和生物活性，采用激光熔覆方法制备出不同含硅量的CaP生物陶瓷涂层。利用扫描电子显微镜（SEM）和X射线衍射仪（XRD）表征了熔覆层组织形貌和物相组成。结果表明：添加SiO2（1wt.%、3wt.%）后形成Ca2SiO4相，熔覆层中部组织细化。通过电化学腐蚀和体外SBF浸泡实验研究了SiO2含量对涂层耐腐蚀性和生物活性的影响。电化学腐蚀结果表明：随着SiO2含量的增大，涂层表面腐蚀电流密度逐渐减小；体外SBF浸泡结果表明：添加SiO2可以加快涂层表面类骨磷灰石的形成，其中，添加SiO2为1wt.%时涂层表面类骨磷灰石呈均匀分布。因此，低含量SiO2可以提高生物陶瓷涂层的耐腐蚀性和生物活性。

This paper tries to exam the transmission bandwidth by establishing a scientific test-platform.The paper provides a test pattern formed by 10 bit raw image data which is generated by FPGA as transmitter.The receiver performs data conversion serial-to-parallel and then sends image data as well as clock and enable signals to the image grabber.The transmission reliability is estimated by checking the real-time received test pattern through the 3-wire LVDS serial port.From abundant experiments,the paper gets two results: when LVDS is implemented by imbedding modules in FPGA,transmission bandwidth is approx 152 Mbit/s;when LVDS is implemented by special LVDS devices,transmission bandwidth is approx 125.2 Mbit/s.In practical application cases,bandwidth derating is advised.