Application of DDR-1500/DSC-2200 in High Performance Test and Measurement
Data collection or waveform output is performed in a timely manner during test measurement. In the case of continuous online dynamic monitoring, it is necessary to save data synchronously. For the non-standard signal processing of the acquisition front-end, the DSC-2200 provided by GE Intelligent Platforms can be used for the processing of front-end strain signals. It mainly provides signal conditioning for full-bridge, half-bridge, and quarter-bridge access modes. Bridge signal access to the amplification of the strain signal, filtering, bias, zero and other functions.
The GE DDR-1500/DSC-2200 system consists of a DSC-2200 system based on front-end signal conditioning and a DDR-1500 system based on data acquisition and waveform output AD, DA. The former is composed of a plurality of modular front-end signal conditioning modules installed in the rack and a processor capable of receiving configuration parameters of the conditioning software. The front-end signal conditioning module can select full-bridge, half-bridge, and quarter-bridge access according to the requirements. Mode modules and ICP modules. The latter provides 64 channels, 24-bit resolution, 2.5M/S acquisition card per channel and 24Bit, 32 channels, 288KHz/ch DA output card. And equipped with powerful DaqHunter software.
solution
GE's high-speed portable test system can be used for acceleration signal, strain signal, pressure signal, displacement signal, and speed signal measurement system. This application is mainly real-time measurement of full-bridge, half-bridge, quarter-bridge and ICP signals, synchronous FFT, waveform, engineering data display. Save data at the same time. Multiple data playback afterwards. Synchronous waveform output can be selected according to the configuration. Full-bridge, half-bridge, quarter-bridge and ICP signals are first connected to the DSC-2200 module for signal conditioning. The signal after conditioning is connected to the DDR-1500 data acquisition system to complete the configuration, processing, preservation, and data display of measurement data. DDR-1500 can meet the design needs of a variety of test and measurement systems, and can provide a wealth of AD, DA selection.
1. System Architecture
The measured full-bridge, half-bridge, and quarter-bridge signals are connected to the DSC-2220 bridge signal conditioning module through the DSC-2200 rear panel's terminal block. The corresponding wiring method and DSC-2220 can be selected according to the bridge signal selection. The signal is amplified, filtered, adjusted, zeroed and other software configurations. The ICP signal is connected to the DSC-2240 signal conditioning module through the rear panel BNC. The bridge signal and ICP signal after conditioning by the DSC-2200 are introduced to the DDR-1500 data acquisition system through the front panel. The DDR-1500 is a portable test system with powerful DaqHunter acquisition analysis software. Before the test and measurement, the signal conditioning module of the DSC-2200 and the AD and DA in the DDR-1500 can be configured according to requirements, and the parameters such as the save, acquisition rate, data conversion, and display mode of each channel data can be set. Download the DSC-2200 configuration parameters through the Ethernet port. The DDR-1500 comes with a portable keyboard and mouse and a liquid crystal display. Figure 1 is a block diagram of the DDR-1500/DSC-2200 system.
Figure 1 GE DDR-1500/DSC-2200 System
2. Product Features
The GE DDR-1500/DSC-2200 system includes a front-end signal conditioning DSC-2200 system and data acquisition system DDR-1500. According to the conditions of the test and measurement site, the DSC-2200 can be fixedly installed or placed in a location where convenient measurement signals can be accessed. The DDR-1500 is a portable test device that can be fixed or placed in a convenient place. The DSC-2200 and DDR-1500 are connected by two flat cables and one network cable. The simple connection method is easy to test.
The DSC-2200 is a signal conditioning system from GE that can be used to measure acceleration, strain, pressure, displacement, and speed signals. The DSC-2200 itself is a stand-alone system with a processor and signal conditioning module, and its optional module configuration can meet a variety of test and measurement requirements. The DSC-2220 module is used for bridge signal conditioning and the DSC-2240 block is used for ICP signal conditioning.
DDR-1500 is a portable data acquisition test system that is easy to carry and operate. WinXP operating system with ICS-645, 24Bit, 32-channel Over Sampling ADC PCI board with 2.5MHz acquisition rate per channel. At the same time optional DA output card ICS- 625B, 24Bit, 32 channels, 288KHz/ch. DaqHunter pre-installed analysis software, DSC-2200 signal amplification, filtering, tuning, zero configuration software, LabVIEW test routines, DA, AD card test routines.
DDR-1500 also provides a wealth of I / O interfaces, such as serial ports, network ports, keyboard / mouse, VGA, USB and so on. And 250GB hard disk for storing data, the user can use DaqHunter to set the storage mode of each channel data. GE has a complete set of routines before leaving the factory, and users can change settings as needed. You can choose 100-240V AC or 18-30VDC power supply.
Figure 2 DDR-1500 data processing
Figure 3 DSC-2200 front-end signal processing
in conclusion
GE DDR-1500 high-performance test, measurement and analysis system can not only provide high-precision AD, DA capabilities and rich software analysis features, multi-function data playback, but also has the ability of non-standard front-end signal processing, filtering, amplification and other capabilities. It conforms to the characteristics of the laboratory standard analytical measuring instrument and can be used in various industrial scenes and other environments.
The current DDR-1500 high-performance test and measurement system applications include sonar, vibration analysis, digital audio, and precision testing and measurement. Some domestic test and measurement laboratories have selected the DDR-1500/DSC-2200 platform as a standard signal tester. At the same time, this system has been successfully applied in the semi-physical measurement simulation, verification platform and measurement data analysis and evaluation system. GE IP will continuously improve the performance of DaqHunter's acquisition analysis software according to the needs of users, and at the same time, it will flexibly select test and measurement hardware.
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