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A Temperature-Autocompensated Detecting Circuit for the Capacitance Fuze
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作者 邓甲昊 周勇 +2 位作者 程受浩 刘华 施聚生 《Journal of Beijing Institute of Technology》 EI CAS 1993年第1期74-82,共9页
In view of drastic possible changes in fuze environment tempera- ture,a kind of temperature autocompensated detecting circuit for the capaci- tance fuze is proposed.It provides a steady detected output when the envi- ... In view of drastic possible changes in fuze environment tempera- ture,a kind of temperature autocompensated detecting circuit for the capaci- tance fuze is proposed.It provides a steady detected output when the envi- ronment temperature varies from-50℃ to 65℃ and keeps a stable detecting sensitivity.Based on an analysis of the circuit,influence of the major param- eters of the oscillating circuit on the amplitude are explored.A few impor- tant controllable parameters affecting the circuit feature are found out.A parameter-control method is given in order to improve the circuit perfor- mance. 展开更多
关键词 capacitance fuze detecting circuit circuit analysis/parameter analysis
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Design of intelligent line-tracking chess robot based on STM32 被引量:4
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作者 LI Shi-guang YANG Xiao-lei 《Journal of Measurement Science and Instrumentation》 CAS 2014年第2期59-63,共5页
An intelligent line-tracking chess robot based on STM32 is introduced in this paper. Its hardware consists of photo- electric detection circuit, main control circuit, motor driven circuit, steering engine driven circu... An intelligent line-tracking chess robot based on STM32 is introduced in this paper. Its hardware consists of photo- electric detection circuit, main control circuit, motor driven circuit, steering engine driven circuit and dial switch. The hardware structure and software flow chart of the system are described in details in this paper. The robot is driven by rear wheel motors, and the real-time position of the robot is determined by the ground information collected by infrared sensors. The heading direction of robot is adjusted by steering engine installed in front wheel, and the open angle of manipulator is controlled by the other steering engine which can ensure the robot moving chessmen accurately and quickly during the moving process. The test shows that the kind of intelligent chess robot can complete the task in a fast and accurate way. 展开更多
关键词 STM32 intelligent robot LINE-TRACKING infrared sensor steering engine detection circuit
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Low leakage 3×VDD-tolerant ESD detection circuit without deep N-well in a standard 90-nm low-voltage CMOS process 被引量:3
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作者 YANG ZhaoNian LIU HongXia WANG ShuLong 《Science China(Technological Sciences)》 SCIE EI CAS 2013年第8期2046-2051,共6页
A new low leakage 3×VDD-tolerant electrostatic discharge(ESD)detection circuit using only low-voltage device without deep N-well is proposed in a standard 90-nm 1.2-V CMOS process.Stacked-transistors technique is... A new low leakage 3×VDD-tolerant electrostatic discharge(ESD)detection circuit using only low-voltage device without deep N-well is proposed in a standard 90-nm 1.2-V CMOS process.Stacked-transistors technique is adopted to sustain high-voltage stress and reduce leakage current.No NMOSFET operates in high voltage range and it is unnecessary to use any deep N-well.The proposed detection circuit can generate a 38 mA current to turn on the substrate triggered silicon-controlled rectifier(STSCR)under the ESD stress.Under normal operating conditions,all the devices are free from over-stress voltage threat.The leakage current is 88 nA under 3×VDD bias at 25°C.The simulation result shows the circuit can be successfully used for 3×VDD-tolerant I/O buffer. 展开更多
关键词 detection circuit electrostatic discharge(ESD) leakage current over-stress voltage stacked-transistors
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Handwriting Input System Based on Ultrasonic Transducers
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作者 王宇峰 杨轶 +4 位作者 孔祥明 廖文俊 王利刚 任天令 刘理天 《Tsinghua Science and Technology》 SCIE EI CAS 2011年第3期290-294,共5页
A handwriting input system was developed using three collinear ultrasonic transducers. These collinear polyvinylidene fluoride (PVDF) transducers were specially designed for the handwriting input system to give a la... A handwriting input system was developed using three collinear ultrasonic transducers. These collinear polyvinylidene fluoride (PVDF) transducers were specially designed for the handwriting input system to give a large writeable area with writing in any direction. Driver and detection circuits were developed for the handwriting system. This handwriting input system based on 2-dimensional position tracing has large writeable area (A4 paper), low drive voltage (5 V), and is independent of the handwriting pad or the pen. 展开更多
关键词 collinear transducers PVDF driver and detection circuit handwriting input system
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Realization of Rapid Debugging for Detection Circuit of Optical Fiber Gas Sensor: Using an Analog Signal Source
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作者 Changbin TIAN Jun CHANG Qiang WANG Wei WEI Cunguang ZHU 《Photonic Sensors》 SCIE EI CAS CSCD 2015年第1期91-96,共6页
An optical fiber gas sensor mainly consists of two parts: optical part and detection circuit. In the debugging for the detection circuit, the optical part usually serves as a signal source. However, in the debugging ... An optical fiber gas sensor mainly consists of two parts: optical part and detection circuit. In the debugging for the detection circuit, the optical part usually serves as a signal source. However, in the debugging condition, the optical part can be easily influenced by many factors, such as the fluctuation of ambient temperature or driving current resulting in instability of the wavelength and intensity for the laser; for dual-beam sensor, the different bends and stresses of^the optical fiber will lead to the fluctuation of the intensity and phase; the intensity noise from the collimator, coupler, and other optical devices in the system will also result in the impurity of the optical part based signal source. In order to dramatically improve the debugging efficiency of the detection circuit and shorten the period of research and development, this paper describes an analog signal source, consisting of a single chip microcomputer (SCM), an amplifier circuit, and a voltage-to-current conversion circuit. It can be used to realize the rapid debugging detection circuit of the optical fiber gas sensor instead of optical part based signal source. This analog signal source performs well with many other advantages, such as the simple operation, small size, and light weight. 展开更多
关键词 Optical fiber gas sensor detection circuit analog signal source rapid debugging
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