Peripheral component interconnect extensions for instrument (PXI)-bus-based charge amplification device
A technology of charge amplification and bus, which is applied in the direction of charge amplifiers, etc., can solve problems such as instrument mismatch, and achieve the effects of convenient design and development, improved integration, and improved simplicity
Inactive Publication Date: 2012-06-27
NANJING HAOZHIDE INTELLIGENT TECH
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Problems solved by technology
Loosely coupled and often mismatched instruments
Method used
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[0030] Such as figure 1 As shown, in the charge amplification device based on the PXI bus of the present embodiment, the charge amplification module, the analog filter module and the signal inverting circuit, the external input signal is output after being processed by the charge amplification module, the analog filter module and the signal inverting circuit successively; The register controls the charge amplification module and the analog filter module through the first and second analog switches respectively; the bus interface chip communicating with the PXI bus communicates with the latch through the data bus and the address bus. The charge amplifying device based on the PXI bus of this embodiment is integrated into a board. Since the application program controls the relevant level signal on the PXI bus during program control, but the level signal cannot directly drive the analog switch, so the board is added A dedicated bus interface chip is used. Since the board is a sig...
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The invention discloses a peripheral component interconnect extensions for instrument (PXI)-bus-based charge amplification device, which is characterized by comprising at least one charge amplification module, at least one analogue filtering module and at least one signal inversion circuit. A signal input from the outside is processed sequentially by the charge amplification module, the analogue filtering module and the signal inversion circuit, and then is output. A latch controls the charge amplification module and the analogue filtering module through a first analogue switch and a second analogue switch respectively. The outside and a bus interface chip for PXI bus communication communicate with the latch through a data bus and an address bus. The device is used for the signal conditioning of a piezoelectric transducer and providing a proper piezoelectric signal for a subsequent PXI-bus-based data acquisition card; and a PXI-platform-based measurement and control system is convenient to integrate, and is controlled by utilizing a program, so that the integration level and operation simplicity of the measurement and control system are improved, and portable measurement and control can be facilitated.
Description
technical field [0001] The invention relates to a charge amplification device, in particular to a signal conditioning and amplification device for piezoelectric sensors in structural health monitoring or vibration control systems, through which a structural health monitoring system or structure based on a PXI system can be established Vibration Control System. [0002] Background technique [0003] Whether it is a test system or a control system, obtaining the signal on the sensor through measurement and processing the signal correctly are the prerequisites for the system to work well. For the early measurement systems, most of the instruments were launched independently by different manufacturers, and the required functions were controlled by the operator through the panel. The individual instruments are loosely coupled and often mismatched. With the rapid development of computer technology, GPIB, VXI, PCI and other interface bus technologies have been proposed one after...
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IPC IPC(8): H03F3/70
Inventor 裘进浩吴义鹏季宏丽阎志坤
Owner NANJING HAOZHIDE INTELLIGENT TECH