Research On Geophysical Prospecting Car Low Frequency Vibration Control And Development Of Embedded Spot Inspection Data Acquisition System

This paper consists of two parts. The first part of paper is about research into the control on the low frequency vibration of geophysical prospecting car. To sum up, the vibration system of geophysical prospecting car is characterized by its low starting frequency, big inertia mass and random signal. Based on these characteristics, this paper focus on the improvement and optimization of pneumatic spring passive vibration isolator first, and also discussed the limit of some technical measures such as lowering the inherent frequency of pneumatic spring by increasing auxiliary chamber volume and etc. And several geophysical prospecting car vibration control schemes have been put forward and the advantages and disadvantages of them are also discussed. At last, a simulation model, which carries on the semi-active fuzzy control by using pneumatic spring as vibration isolator also be made. The output was divided into two frequency (0.5-2.4Hz,2.4-6.2Hz) for analysis. The result is that in different frequency bands, the acceleration and displacement of the geophysical prospecting car, and the dynamic load of pneumatic spring have been upgraded respectively at the rates of 17.96%, 2.99% and 14.8%, which suggests that this scheme can effectively lower the damage from vibroseis to the body of the car.The second part of paper is about design and development of embedded spot inspection data acquisition system. Equipment spot inspection management is a kind of dynamic management on equipments, a way to carry out the total productive maintenance (TPM). The embedded spot inspection system, which based on WINCE5.0 platform, can be applied to enterprise plan spot inspection, routing inspection, as well as free mode and free data acquisition, was developed by following planned spot inspection management. In the course of realizing the system, the possibility that spot inspection personnel might act reluctantly as plan spot inspection task is burdensome has been taken into full consideration. Omitting unnecessary operation procedures when designing man-machine interface and greatly simplifying the operation process make it more convenient and more humanized. Free spot inspection function module improved the parameter settings of vibration data acquisition, which will result in largely decreasing the times of inputting test point information and raising work efficiency, even if in the face of a great demand for temporary data acquisition. Put into use, the embedded spot inspection is meant for standardization of enterprise equipment management and overcoming the shortcomings of traditional spot inspection management, such as high costs, ineffective administration, difficult records maintenance and inconvenient data query.