| The rapid development of modern electronic technology, especially the research and development of image sensor, the image acquisition system in automation, high precision and easy expansion of functions and direction have higher requirements. In the field of non-contact and on-line measurement system, research and application of CCD image sensor is more and more widely. The traditional measurement system Can not meet the high precision, non-contact measurement, gathering the data signal into t hardware platform, needing more complicated wiring. The traditional instrument need practical manipulation, and the function is difficult to expand.Aiming at the problems of the existing system, this paper presents the design of a virtual instrument and Bluetooth technology based on the linear array CCD image acquisition system.The system uses Bluetooth for wireless data transmission equipment, the data analysis and processing are based on virtual instrument technology, the virtual instrument software platform is Lab VIEW. The platform can realize wireless data acquisition, data storage and processing functions. At the same time with the measurement of speed, simple connection, small volume, low power consumption, low cost, strong versatility.This thesis mainly carries out two aspects of the work. The first part is the hardware design of the system. The first is the overall design scheme is put forward according to the demand. Then the hardware design of each module in the system, this system uses TCD1209 D for CCD image sensor; Using AD9945 as the ADC system and the signal processing module, and the use of microprocessor ARM internal SRAM storage processing results; In order to improve the portability, the system can continue to work in the battery case, power supply design using HB6298 as the charging module of the system, XL6008 is used as a voltage conversion module; The HC05 Bluetooth module for wireless transmission system, by sending and receiving instructions to establish a communications link between a master and a slave. After the working principle of each module of hardware, using Altium Designer to draw the circuit schematic and PCB board, the design of the circuit board of the system needs to solve the electromagnetic compatibility and signal integrity.The second part is the design of system software platform. The first is the design of driver hardware module, the use of single-chip C language development system Keil Vision4 software, the software supports ARM chip. The Bluetooth module initialization and HCI layer flow control set. Processing CCD image signal using Lab VIEW graphical programming language.After the completion of the design, making the overall debugging and analysis of the system finally. Ensuring each module can work normally. |
