CN104408213A - Portable data acquisition card - Google Patents
Portable data acquisition card Download PDFInfo
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- CN104408213A CN104408213A CN201410710669.XA CN201410710669A CN104408213A CN 104408213 A CN104408213 A CN 104408213A CN 201410710669 A CN201410710669 A CN 201410710669A CN 104408213 A CN104408213 A CN 104408213A
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Abstract
The invention discloses a portable data acquisition card. The data acquisition card comprises a housing case and a machine core circuit, the front panel of the housing case is provided with the analog signal input interface, a clock input interface, a clock output interface, a trigger input interface and an External difference digital signal input interface, the rear panel of the housing case is provided with a USB interface, RJ45 interface, a power interface and a power pilot lamp. Four paths of AD sampling data of the data acquisition card are respectively stored in four pieces of DDR2, and guided into the DMA of the MCU after data-caching through the interface between the FPGA and MCU, the data is transmitted to the upper computer through the USB 3.0 interface of the MCU. The data acquisition card can collect the analog signal and the digital signal, support the single-way, dual-way and four-way data acquisition and support the internal clock and external clock input.
Description
Technical field
The present invention relates to a kind of data collecting card, particularly a kind of portable data acquisition card.
Background technology
Data acquisition, refers to automatic collection electricity or electric quantity signal from the analog-and digital-unit under tests such as sensor and other Devices to test, delivers in host computer and analyze, process.Data acquisition system (DAS) is that the measurement software and hardware product combined based on computing machine or other dedicated testing platforms realizes flexibly, user-defined measuring system.Data collecting card, namely realizes the computer extender card of data acquisition function, can pass through USB, 485,232, Ethernet, the bus such as various wireless networks access personal computer.
Data collecting card is used for gathering various types of data, and along with modern comfort is towards digitizing, informationalized high speed development, data acquisition is stuck in every field and obtains applying more and more widely.
Summary of the invention
The object of the invention is to overcome the deficiencies in the prior art, a kind of portable data acquisition card is provided, this data collecting card can gather simulating signal, digital signal, the data acquisition of single channel, binary channels and four-way can be supported, support internal clocking and external clock input simultaneously, gather cassette tape 4 DDR2, every sheet capacity is 256MB, and total amount is 1GB.
The object of the invention is to be achieved through the following technical solutions: a kind of portable data acquisition card, it comprises casing and movement circuit, the front panel of described casing is provided with analog input interface, clock input interface, clock output interface, triggers input interface and external difference digital signal input interface, the rear panel of described casing is provided with USB interface, RJ45 interface, power interface and power light;
Described movement circuit comprises AD converter, FPGA, Clock management chip, DDR2 and MCU, the data collected are transferred to FPGA by described AD converter, FPGA by data buffer storage in DDR2, after the sampled data of buffer memory 1S, the data of collection are transferred to MCU according to the instruction of MCU by FPGA, MCU transfers data in the DMA of USB, transfers data to host computer by USB.
Described analog input interface has four tunnels, and described AD converter has two, and be respectively connected with the input of two-way simulating signal, described DDR2 has four, each data storing a road collection of simulant signal.
Described AD converter adopts AD9650-105M, and board Clock management chip selects AD9516, and MCU adopts CY3014.
Described USB interface is USB3.0 interface, described external difference digital signal input interface is the J30J interface containing 21 pairs of differential lines, described power interface is the single CH10-5.08-4 interface of four-core, described analog input interface, clock input interface, clock output interface and trigger input interface and all adopt SMA interface.
The invention has the beneficial effects as follows: the invention provides a kind of portable data acquisition card, this data collecting card can gather simulating signal, digital signal, the data acquisition of single channel, binary channels and four-way can be supported, support internal clocking and external clock input simultaneously, gather cassette tape 4 DDR2, every sheet capacity is 256MB, and total amount is 1GB.
accompanying drawing explanation
Fig. 1 is data collecting card structural drawing;
Fig. 2 is data collecting card backplane layout figure;
Fig. 3 is data collecting card circuit diagram;
In figure, 1-casing, 2-analog input interface, 3-clock output interface, 4-clock input interface, 5-triggers input interface, 6-external difference digital signal input interface, 7-power interface, 8-RJ45 interface, 9-USB interface, 10-power light.
embodiment
Below in conjunction with accompanying drawing, technical scheme of the present invention is described in further detail, but protection scope of the present invention is not limited to the following stated.
As shown in Figure 1, Figure 2 and Figure 3, a kind of portable data acquisition card, it comprises casing 1 and movement circuit, the front panel of described casing 1 is provided with analog input interface 2, clock input interface 4, clock output interface 3, triggers input interface 5 and external difference digital signal input interface 6, the rear panel of described casing 1 is provided with USB interface 9, RJ45 interface 8, power interface 7 and power light 10;
Described movement circuit comprises AD converter, FPGA, Clock management chip, DDR2 and MCU, the data collected are transferred to FPGA by described AD converter, FPGA by data buffer storage in DDR2, after the sampled data of buffer memory 1S, the data of collection are transferred to MCU according to the instruction of MCU by FPGA, MCU transfers data in the DMA of USB, transfers data to host computer by USB.
Described analog input interface has four tunnels, and described AD converter has two, and be respectively connected with the input of two-way simulating signal, described DDR2 has four, each data storing a road collection of simulant signal.
Described AD converter adopts AD9650-105M, and board Clock management chip selects AD9516, and MCU adopts CY3014.
Described USB interface is USB3.0 interface, described external difference digital signal input interface is the J30J interface containing 21 pairs of differential lines, described power interface is the single CH10-5.08-4 interface of four-core, described analog input interface, clock input interface, clock output interface and trigger input interface and all adopt SMA interface.
4 road AD sampled datas of data collecting card are cached in capture card 4 DDR2 respectively, and after data buffer storage terminates, then imported to by the interface of FPGA and MCU in the DMA buffer memory in MCU, the USB3.0 interface eventually through MCU transfers data to host computer.Clock management chip selects AD9516, and support 2 road external clock inputs, clock is exported and can be configured by the SPI interface of FPGA, realizes 56MHz, 70MHz and 100MHz sampling clock of sampling request.Signals collecting starts to gather at the rising edge of trigger pip, and sampled point aligns with trigger pip, outside reserved J30J interface, connect the digital difference signal of directly input, for direct buffer memory transmission of digital signals, board reserves RJ45 Interface realization serial data communication, is convenient to debugging.
Claims (4)
1. a portable data acquisition card, it is characterized in that: it comprises casing (1) and movement circuit, the front panel of described casing (1) is provided with analog input interface (2), clock input interface (4), clock output interface (3), triggers input interface (5) and external difference digital signal input interface (6), the rear panel of described casing (1) is provided with USB interface (9), RJ45 interface (8), power interface (7) and power light (10);
Described movement circuit comprises AD converter, FPGA, Clock management chip, DDR2 and MCU, the data collected are transferred to FPGA by described AD converter, FPGA by data buffer storage in DDR2, after the sampled data of buffer memory 1S, the data of collection are transferred to MCU according to the instruction of MCU by FPGA, MCU transfers data in the DMA of USB, transfers data to host computer by USB.
2. a kind of portable data acquisition card according to claim 1, it is characterized in that: described analog input interface has four tunnels, described AD converter has two, is respectively connected with the input of two-way simulating signal, described DDR2 has four, each data storing a road collection of simulant signal.
3. a kind of portable data acquisition card according to claim 1, is characterized in that: described AD converter adopts AD9650-105M, and board Clock management chip selects AD9516, and MCU adopts CY3014.
4. a kind of portable data acquisition card according to claim 1, it is characterized in that: described USB interface is USB3.0 interface, described external difference digital signal input interface is the J30J interface containing 21 pairs of differential lines, described power interface is the single CH10-5.08-4 interface of four-core, described analog input interface, clock input interface, clock output interface and trigger input interface and all adopt SMA interface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410710669.XA CN104408213B (en) | 2014-11-28 | 2014-11-28 | A kind of portable data acquisition card |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410710669.XA CN104408213B (en) | 2014-11-28 | 2014-11-28 | A kind of portable data acquisition card |
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| Publication Number | Publication Date |
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| CN104408213A true CN104408213A (en) | 2015-03-11 |
| CN104408213B CN104408213B (en) | 2017-10-17 |
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| CN201410710669.XA Active CN104408213B (en) | 2014-11-28 | 2014-11-28 | A kind of portable data acquisition card |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106886206A (en) * | 2015-12-15 | 2017-06-23 | 西安富成防务科技有限公司 | A kind of missile-borne computer product Auto-Test System |
| CN107909798A (en) * | 2017-10-27 | 2018-04-13 | 深圳航天东方红海特卫星有限公司 | A kind of portable collection of multi analogy channel signal device of microsatellite |
| CN110008172A (en) * | 2019-04-02 | 2019-07-12 | 广东高云半导体科技股份有限公司 | A kind of system on chip |
| CN110347623A (en) * | 2019-07-10 | 2019-10-18 | 合肥金新允电子技术有限公司 | A kind of portable data acquisition card structure |
| CN111444131A (en) * | 2020-03-23 | 2020-07-24 | 电子科技大学 | Data acquisition and transmission device based on USB3.0 |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106886206A (en) * | 2015-12-15 | 2017-06-23 | 西安富成防务科技有限公司 | A kind of missile-borne computer product Auto-Test System |
| CN107909798A (en) * | 2017-10-27 | 2018-04-13 | 深圳航天东方红海特卫星有限公司 | A kind of portable collection of multi analogy channel signal device of microsatellite |
| CN110008172A (en) * | 2019-04-02 | 2019-07-12 | 广东高云半导体科技股份有限公司 | A kind of system on chip |
| CN110347623A (en) * | 2019-07-10 | 2019-10-18 | 合肥金新允电子技术有限公司 | A kind of portable data acquisition card structure |
| CN111444131A (en) * | 2020-03-23 | 2020-07-24 | 电子科技大学 | Data acquisition and transmission device based on USB3.0 |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104408213B (en) | 2017-10-17 |
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