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A MEMS switch based on electro-thermal and electro-explosion has been packaged before its humidity test, temperature shock test and ballistic shock test are taken. Some devices failed after the tests. The analysis of such a device is given in this paper.
Landmine and improvised explosive (IED) are the major threat to the occupants inside armored vehicles. IED-detonation introduced Global effects of severe acceleration can greatly hurt vehicle occupants. To investigate the responses of armored vehicle and its occupants subjected to landmine explosion, an low-cost equivalent miniature model of the vehicle replacing real-scale one was built. With a full...
The purpose of this paper is to study the remove insurance time with different stiffness of typical MEMS S&A (Safety and Arming)device, which are composed of the micro spring, slider, zigzag slot and card lock. According to higher dynamics theory, the zigzag slot collision energy loss, card lock closure features such as abstract the slider in the theoretical model of motion process, we used MATLAB...
measuring micron particle density becomes challenged in a high concentration level. To address this issue, we proposed ultrasonic attenuation to measure high concentration micron particles of cement powder in gas-solid two phase flow. An ultrasonic inspection system and a particulate matter concentrations simulation chamber were built respectively to demonstrate relationship between signal attenuation...
In this paper, a MEMS S&A device has been proposed. The size of the device is φ 12×0.3mm. The role of the centrifugal insurance mechanism is to ensure the safety in handling transportation and storage, and reliable firing with the launch overload. Through establishing the three-dimensional model of the centrifugal insurance mechanism, establishing the force and the parameters of the centrifugal...
visualization of real-time logistics monitoring microsystem is designed based on MEMS sensors, which are high ability, low power consumption and low cost. The MEMS acceleration sensor BMA280, the MEMS pressure sensor BMP085, the display module, the memory module and the radio frequency (RF) module are integrated in the intelligent microsystem. Intelligent microsystem block diagram is shown in Fig...
In this paper, aiming at the failure mode with MEMS spring fracture of MEMS S&A (Safety and Arming) device, the dynamic simulation and response surface method are combined to use to establish the relationship between the structure response and the structure random variables. The stress values are fitted by the least square method, and the binary quadratic equation, whose variables are the MEMS...
This paper provides a novel solution to available train network by analyzing and comparing the present development and application situation about kinds of technologies of train network. C-MBUS is proposed for train network and fire warning system. This paper designs a system frame of train intelligent fire warning terminal based on C-MBUS. In the design, using C-MBUS for this project to connect train...
This paper provides a novel solution to available home network by analyzing and comparing the present development and application situation about kinds of technologies of home network. C-MBUS is proposed for home network and fire warning system. This paper designs a system frame of in-home intelligent fire warning terminal based on C-MBUS.In the design, using C-MBUS for this project to connect in-home...
The problem of estimating speaker location in smart conference video system is considered. In this paper, a four-microphone cross array is constructed to localize speakers with Time Difference of Arrival (TDoA) measurements based on hyperbola model. The time delay was calculated using Generalized Cross Correlation (GCC)algorithm. A practical test system was build to confirm the feasibility of the...
Due to the rapidly growing MEMS initiator market and the needs for smaller, safer and higher integration, more advanced switches are in demand. The novel solid MEMS switch can improve the security and reliability of MEMS initiator, while the leads of its package are weak under high impact. This paper mainly studied the leads reliability of the novel solid MEMS switch under high impact by FEM simulation...
In this paper, a planar-zigzag-type multi-slot S&A system has been proposed. The system consists of the MEMS W-type micro-spring, slider and zigzag slot. Through simulating and analyzing the micro-spring by applying ANSYS, establishing the mathematical model of the motion for the slider and simulating the physical model by the non-linear dynamic mechanics, appropriate Micro-spring, slider and...
For the advantages of small volume, low power consumption and high accuracy, MEMS sensors have been widely used in many fields, especially for high altitude meteorology monitoring, where a radiosonde with MEMS barometric pressure sensors will be used to collect the data of barometric pressure. Therefore, the way to calibrate such MEMS sensors effectively is of a great value. This paper reported a...
MEMS initiator has been developed rapidly for its low detonating power and small volume. MEMS metal bridge as one type of the MEMS initiators, which has the same process with ASIC (Application-specific integrated circuit). In this paper, one novel ASIC self-destruction technology in chip level mainly based on MEMS metal bridge initiator is presented. A typical experimental structure was designed....
Several Prognostics and Health Management (PHM) algorithms are to be analyzed in this paper, and the purpose is set to master the know-how of the optimization of the prognostic algorithms. To implement the PHM for sensitive cargo transportation, based on the original data collected during the dedicated tests, applying the microsystem hardware designed and assembled by the research team, as well as...
A perfect detecting method is a key factor for robotic systems, and the Built-in-Test (BIT) is the most important technological approach to improve the testability and diagnostic capability of robotic systems. The Miniature Wheel-Track-Legged Mobile Robot is studied, a distributed diagnostic network is presented based on Microsystems, BP network is applied and integrated with D-S evidence theory organically...
Base on the fuzzy control theory, and takes the three phase asynchronous motor speed control system as the controlled object, this paper put forward one kind of novel parallel decoupling PID control algorithm, and it consists of parallel decoupling PID control units and parameter self-tuning fuzzy PID controller. By way of the mass practical experiment, it indicates the feasibility and the effectiveness...
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