Methods for Vibration Reduction in Enclosed Electronic Packages

The article shoving the results of development seismic signal recorder for purpose of registration human footstep seismic signals. Design of recorder was adopted for collection seismic signals and store it on PC, for next seismic signal processing and creation signal detection and classification algorithms. The article provides an overview of the types of seismic waves, their classification is given. The conditions for the propagation of seismic waves are determined, and the features of Rayleigh waves are clarified. The design structure of the seismic sensor has been developed. The specifics of the functioning of the seismic sensor are described, the place and conditions of power supply and placement of the external interface are recognized. The specifics of using the sensor of an electromechanical transducer - geophone and the features of measurements using a stationary earth are described. It is shown that the development of a seismic signal sensor circuit implies the placement of input amplifiers in its structure. The main amplitude-frequency and phase-frequency characteristics of the geophone are presented. Geophone equivalent circuit, amplifier circuit, low-pass filter circuit are presented. Illustrations of types of seismograms are given, recommendations on the features of digital signal processing are given. The order of seismic signal processing is connected with its transmission from the sensor through the amplifying stage, passing through a low-pass filter in order to minimize noise and interference. The next step is to send a signal to the ADC. From the presented graphs of sensitivity and phase shift of the geophone, it follows that special attention should be paid to the curve corresponding to the sensor with an open output. This configuration of the sensor is optimal in the context of the formation of the maximum equal frequency response. As papers result was proposed structural and schematic design for all main recorders blocks and software features that required for properly using recorder. Tests in real conditions on test sites have shown the correctness of the choice of schemes of technical solutions for the task of registering seismic waves.

show abstract

“…As a list of features can be used set of statistic characteristics of signals (dispersion, centroid, etc.) [10][11][12][13].…”

Section: Fig7 Record Software Graphic User Interfacementioning

confidence: 99%

Seismic Wave Recorder Design for Development Footstep Human Detection Algorithms

Vistyzenko¹,

Movchanyuk²,

Stepanov

et al. 2023

ВОТТП

View full text Add to dashboard Cite

show abstract

“…The processes carried out in the hydraulic and pneumatic components can be divided into working and accompanying systems. The parameters of the processes characterizing the technical condition of hydraulic and pneumatics components can be divided into [4,7]:…”

Section: Diagnostic Signalsmentioning

confidence: 99%

Exploitation aspects of diagnostic hydraulic and pneumatic systems of Multimedia Hybrid Mobile Stages

et al. 2021

Self Cite

View full text Add to dashboard Cite

Knowledge of the technical state and construction of the hydraulic and pneumatic control system of Multimedia Hybrid Mobile Stage HMSM allows you to identify hazards and make a risk assessment. The aspects of the algorithmic process of diagnosing pneumatic and hydraulic control systems presented in the work form the basis for the development and implementation of safe solutions in the process of operation. This article describes the methodology for diagnosing HMSM machine hydraulics and industrial pneumatics systems, detailing the factors determining the correctness of maintaining functional fitness. The considerations developed illustrate the complexity of the diagnostic testing design process for condition assessment.

show abstract

“…In most cases, the purpose of vibration measurements is to monitor the operating conditions of the shaft and bearing. The sensor should be installed so that mechanical vibrations of the bearing act directly on its working surface [15,16,17]. The sensor 3 perceives the mechanical oscillations of the bearing with less vibration, which is disturbed by other components and parts of the unit, compared to sensor 4, which receives the transformed bearing oscillations and mechanical oscillations when passing through the LF2 AD12 2 ALD IDП RAM S1 A1 LF1 AD21 OD detachable connection, generated by other units.…”

Section: Presenting Main Materialsmentioning

confidence: 99%

Systems of vibration parameters automated control for diagnostics of equipment technical state

et al. 2021

View full text Add to dashboard Cite

The article deals with the issues of the spatial direction of measurement, which is optimal in terms of recognition of the state of a particular unit node and preparation of control points for diagnosis. To form a diagnostic feature, the representation of the signal in a rather narrow range has been used, for instance, in the area of one of the harmonics of the fundamental mechanism excitation frequency. To process such signals, an integrated programming environment developed in the style of Microsoft Visual products has been created. To ensure the requirements of optimal vibration analysis, the structure of stationary equipment control systems has been proposed. Analysis of random vibration of the diagnosed object is done using real-time two-channel analyzers. Each analyzer channel has a processor for fast Fourier transform and operational information. The two available channels can allow assessment of the state of the object by special correlation functions. In contrast to the known methods, the established methods of determining the frequency range of defects of various light industry machine nodes differ in taking account size of parts and equipment nodes, and the possibility to use narrow-band filtering. The analysis of possibilities to install vibration sensors has been carried out.

show abstract

Methods for Vibration Reduction in Enclosed Electronic Packages

Cited by 4 publications

References 7 publications

Seismic Wave Recorder Design for Development Footstep Human Detection Algorithms

Seismic Wave Recorder Design for Development Footstep Human Detection Algorithms

Exploitation aspects of diagnostic hydraulic and pneumatic systems of Multimedia Hybrid Mobile Stages

Systems of vibration parameters automated control for diagnostics of equipment technical state

Contact Info

Product

Resources

About