| 摘要 |
PURPOSE: A surface pressure measuring apparatus is provided to achieve improved installation efficiency of windbreak fence by measuring and indicating, in a two-dimensional method, the separation phenomenon caused due to the pressure fluctuation at the surface of material. CONSTITUTION: An apparatus comprises a plurality of pressure tubes(11) for detecting pressures of multiple surfaces for the heaped material; a multi-point pressure measuring unit(40) including a channel selector(30), a multi-point pressure receiver(10) for receiving the pressure detected by the pressure tubes through a receiving channel(12) selected by the channel selector, and a pressure transducer for transducing the pressure received at the multi-point pressure receiver, into an analog voltage signal; a signal adjusting unit(50) for adjusting analog voltage signal of the pressure transducer of the multi-point pressure measuring unit, into a predetermined voltage size; an A/D converting unit(60) for converting the analog signal into a digital signal in accordance with the signal adjusted by the signal adjusting unit; a data control unit(70) for storing and analyzing the digital signal converted by the A/D converting unit, and displaying the result; and an output unit(80) for outputting the data displayed by the data control unit, into graphical representation or prints.
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