In today's rapid development of science and technology, all kinds of automated instruments and automatic control are inseparable from signal acquisition, and the signals to be collected are getting faster and faster, and the accuracy requirements are getting higher and higher. How to quickly and easily integrate this function into the system?
1. Basic introduction of ZSDA1000
ZDS1000 is a high-speed signal data acquisition module developed by ZLG Zhiyuan Electronics. The module is connected to the host through PCI Express2.0 interface, 350M bandwidth, 1GSa/s sampling rate. Users only need to dynamically control the module for data acquisition and data processing through the dynamic link library file. Can be used for mass spectrometry, radar signal capture, material analysis and other occasions.
Figure 1 ZSDA1000 module
2, ZSDA1000 works
Figure 2 Analog part block diagram
The schematic diagram of the analog part of the ZSDA1000 is shown in the figure above. After the signal to be tested is selected by the channel coupling, it is subtracted from the “vertical offset voltageâ€, and then amplified and sent to the ADC and the trigger module. In the trigger module, the “trigger comparison voltage†is compared to complete the trigger function. The data after the ADC and the trigger module will be sent to the data processing chip to complete the data acquisition and sampling control.
Figure 3 overall block diagram
The overall block diagram of the ZSDA1000 is shown in Figure 3. FPGA is used as the core processor, responsible for high-speed data reading of ADC, PCIE high-speed data transmission and related control functions. The ADC uses a dual 8-bit high-speed ADC with a sampling frequency of 1.0 GSPS. Communication with the host computer uses PCIE & TImes; 4 for communication, and onboard 1GB DDRIII.
3, ZSDA1000 performance
Vertical resolution: 8 bit
Maximum sampling rate: 1GSa/CH
Number of channels: 2CH
Signal input range: 100mVpp~5Vpp
Analog bandwidth: DC ~ 350MHz
Dead time: 10μS
Onboard memory: 1GB DDRIII
Communication link: PCI Express 2.0
4, ZSDA1000 application - mass spectrometer
Mass spectrometers, also known as mass spectrometers, are mainly used to separate and detect the content of related substances. According to the principle that charged particles can be deflected in an electromagnetic field, material separation and substance detection are performed according to the difference in mass of substance atoms, molecules or molecular fragments.
Figure 5 Schematic diagram of the mass spectrometer
Among them, the ion source, the mass analyzer and the ion detector complete a process of material detection from ordinary physical characteristics to electric quantity conversion, followed by signal conditioning and digital-to-analog conversion processing. Due to the diversity of the detected substances, the information obtained by the ion detector differs greatly, including signals of different voltage amplitudes and different time intervals.
In order to accurately and accurately convert such power into digital-to-analog, the signal acquisition module must have sufficient analog bandwidth, sufficient sampling rate, and sufficient measurement voltage range. The ZSDA1000 high-speed digital acquisition module has done a good job with its excellent precision and speed.
The details are as follows:
Under the control of PC software, ZSDA1000 attenuates and amplifies the signal according to the amplitude of the input signal voltage, and then controls the high-speed analog-to-digital converter ADC to perform analog-to-digital conversion on this signal. At the same time, the trigger module in ZSDA1000 is working at the same time, controlling the start and end of data acquisition, ensuring that the collected data is the data that the user is interested in.
The ZSD1000 acquisition module board uses a high-end FPGA chip to ensure real-time reception, storage, and mathematical processing of ADC data. The ZSDA1000 can process up to 65535 averages of the collected data, which can effectively filter the random noise during the sampling process and ensure the accuracy of the sampled data.
ZSDA1000 high-speed signal data acquisition module has excellent bandwidth and precision, powerful data storage and processing energy. PCI Express 2.0 interface, complete software resources, short development cycle and easy to use. Quickly integrate high-speed data acquisition into your system.
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