The Design Of Static Load Test Auto-Detection System

To ensure the safety of each structures,we need to detect the foundation of the structures before the structures start to build,and maximize the quality of the structures is guaranteed.First of all,the foundation of the buildings is detected to giving a pile press,and this test is Static load test.The static load test determinined to measure the bearing capacity and deformation index is the most direct and effective way.The main data is the detection of displacement sensor displacement deviation.In order to facilitate data collection,this design utilizes System-on-Chip MCU,the Silicon Laboratories C8051F327 microcontroller as the control core,this chip have USB interface,it could been convenient to communicate with PC,and acts Siemens Corporation's industry level communication module TC35i as the transmission core,So we can design a data collection that can be remote wireless data collection terminal device.To take advantage of short message text(SMS)services in this design,we must first introduce the PDU operation of encoding/decoding process and AT commands we used. In order to use the USB technology,the paper briefly introduces the relative knowledge of USB interface,and introduces the development process of WDM driver.The development of this device include the contents of two parts,namely,hardware design and software design.In the hardware design,wo introduces the characteristic and performance of C8051F327 which we used and the TC35i module which are used in the design application,then produces the concrete hardware design acheme and PCB schematic.There are three parts in the software design part,such as firmware's program,the driver development program and the application program development.In the design of the firmware program,firstly introduced the ideas of program design and programming strcture and then introduces program flow diagram and gives some codes of the program. In the driver segment, we introduce the driver structure,the process of development and the realization method.The application program mainly includes the design of a friendly man-machine interface,the PDU ecoding/decoding and achieving short message on the sending and receiving,put the data that received into the database,and this can make users to analysis of data collected,processed and judged.