CN104678942B - A kind of totally digitilized investigating method - Google Patents
A kind of totally digitilized investigating method Download PDFInfo
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- CN104678942B CN104678942B CN201410425989.0A CN201410425989A CN104678942B CN 104678942 B CN104678942 B CN 104678942B CN 201410425989 A CN201410425989 A CN 201410425989A CN 104678942 B CN104678942 B CN 104678942B
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- observing
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- communication card
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P90/00—Enabling technologies with a potential contribution to greenhouse gas [GHG] emissions mitigation
- Y02P90/02—Total factory control, e.g. smart factories, flexible manufacturing systems [FMS] or integrated manufacturing systems [IMS]
Abstract
The invention provides a kind of new type digital investigating method, including：Observing and controlling command signal is supplied to Communication Card and sensor network by master controller；The observing and controlling command signal is supplied to first group of sensor by the Communication Card, and obtains corresponding observing and controlling feedback signal from the first group of sensor；The observing and controlling command signal is supplied to second group sensor by the sensor network, and obtains corresponding observing and controlling feedback signal from the second group sensor；The master controller obtains corresponding observing and controlling feedback signal from the Communication Card and the sensor network.The present invention transmits feedback signal due to applying the progress networking of EtherCAT real-time ethernets sensor, solves analog feedback signal in original Semi-digital observing and controlling mode and is easily disturbed, and the problem of autgmentability is poor improves the accuracy of experimental data.
Description
Technical field
The present invention relates to observation and control technology field, more particularly to a kind of new type digital investigating method.
Background technology
TT＆C system is collection measurement with being controlled in integral pilot system.Generally by various kinds of sensors, interconnecting module and
The part of computer control three is constituted.It is general in measurement process to realize retaking of a year or grade to sensing data and right using analog signal
Measurand control signal is issued.
Traditional investigating method is simulation observing and controlling mode, and computer control is generally required when being tested with such a observing and controlling mode
Dummy instruction signal is handed down to measurand by device processed by more than ten road D/A passages acts it, while also needing at least tens
Road A/D passages gather the analog feedback signal of each sensor to computer control, and controller is to gathering the number come afterwards
According to line translation is entered, analyze, show and preserve to complete whole experiment process.
Such a observing and controlling mode is very sensitive to external environment condition when being tested, and interference is highly prone to, in order to mitigate interference
Signal ground, cable plus screen layer need to be taken, twisted-pair feeder is changed to, carries out signal isolation, a series of measures such as filtering and add item
Mesh cost and construction cycle.Such a observing and controlling mode autgmentability is poor simultaneously, general if necessary to increase A/D, D/A collection output simulation
The port number of passage, which must then increase hardware board and resist interference sections progress redesign, can be only achieved Expected Results, more
Improve cost.
With the continuous progress of observing and controlling mode, people come up with various methods to reduce the exploitation week of simulation observing and controlling mode
Phase, project cost is spent with extension.Cost is extended as surplus design is reduced, is adopted using the A/D of integrated signal isolation filter function
Collect board to reduce the design difficulty of anti-interference part, the synchronous triggering node of increase provides the raising of high-precise synchronization acquisition function and surveyed
Try precision etc..
Gathered however, these can not all be inherently eliminated simulation observing and controlling mode in command signal and feedback signal output
The problem of observing and controlling mode autgmentability is poor is easily disturbed and simulated in journey.Then, a kind of observing and controlling mode of Semi-digital is devised
Come and be widely used.The observing and controlling mode of this Semi-digital typically issues control instruction signal using number bus, and gathers
The less demanding sensor feedback signal of fractional-sample rate.This observing and controlling mode using number bus as control instruction due to being believed
Number and operative sensor feedback signal input and output interfaces, using number bus strong antijamming capability, expansion interface is simple
The interference that advantage greatly reduces control instruction signal and operative sensor feedback signal improves the data essence of observing and controlling mode
Degree, reduces extension maintenance cost.However, blemish in an otherwise perfect thing be some number bus bit rate it is relatively low the problem of cause its nothing
Method meets the collection demand of some sensors for requiring that sample rate is higher.This, which allows for this partial data, still needs by A/
D passages are collected.Then, although this Semi-digital observing and controlling mode using number bus technology by eliminating command signal
Interference, but the interference suffered by its data for being gathered to those by A/D passages is still helpless.
The content of the invention
(1) technical problem to be solved
In order to which in the presence of overcoming the shortcomings of prior art, it is an object of the invention to how to provide a kind of new type digital
Change investigating method, be inherently eliminated input/output signal interference, improve the measuring accuracy and reliability of observing and controlling mode.
(2) technical scheme
To achieve these goals, the invention provides a kind of new type digital investigating method, including：Master controller will
Observing and controlling command signal is supplied to Communication Card and sensor network；The observing and controlling command signal is supplied to by the Communication Card
One group of sensor, and obtain corresponding observing and controlling feedback signal from the first group of sensor；The sensor network is surveyed described
Control command signal is supplied to second group sensor, and obtains corresponding observing and controlling feedback signal from the second group sensor；It is described
Master controller obtains corresponding observing and controlling feedback signal from the Communication Card and the sensor network.
Preferably, in addition to：The Communication Card and the sensor network are synchronized using PXI firing lines tactile
Hair.
Preferably, observing and controlling flow includes：The master controller is carried out just to the Communication Card and the sensor network
Beginningization, sets the sample rate of the Communication Card and the sensor network, and by the Communication Card and the sensor network
The mode of operation of network is set to passive triggering pattern；The Communication Card and the sensor network wait trigger signal；The master
Controller synchronizes triggering, the communication board by the PXI firing lines to the Communication Card and the sensor network
Card and the sensor network work and according to the respective sample rate return data simultaneously；The master controller is to described time
Pass data to be handled, and the Communication Card and the sensor network is stopped and is resetted at the end of observing and controlling.
Preferably, the Communication Card is 1553B boards, and the sensor network is EtherCAT real-time ethernets, institute
Master controller is stated for computer control.
Preferably, the PXI firing lines include：PXI Trigger Bus, for being triggered to the 1553B boards；PXI
External triggering wiring, for the triggering for the EtherCAT real-time ethernets with the 1553B boards be synchronised.
Preferably, the observing and controlling command signal is supplied to 1553B numerals by the computer control by BC controllers
Bus, and obtain corresponding observing and controlling feedback signal from the 1553B number bus；And, by network interface by the observing and controlling
Command signal is supplied to the EtherCAT real-time ethernets, and obtains corresponding from the EtherCAT real-time ethernets
Observing and controlling feedback signal.
Preferably, the first group of sensor includes multiple RT substations, is connected to the 1553B number bus, for inciting somebody to action
The observing and controlling command signal is supplied to first group of measurand, and it is anti-to obtain corresponding observing and controlling from first group of measurand
Feedback signal is supplied to the 1553B number bus；The second group sensor includes multiple sensor substations, is connected to described
EtherCAT real-time ethernets, for the observing and controlling command signal to be supplied into second group of measurand, and will be from described second
Group measurand obtains corresponding observing and controlling feedback signal and is supplied to the EtherCAT real-time ethernets.
Preferably, the sample rate of the first group of sensor is general sample rate, the sample rate of the second group sensor
For compared with high sampling rate.
Preferably, the general sample rate is 1 millisecond/frame, and described is 100 delicate/frames compared with high sampling rate.
(3) beneficial effect
The present invention has significant advantage and beneficial effect compared with prior art：The present invention changes to Semi-digital investigating method
Enter, digital observing and controlling mode is used during observing and controlling, EtherCAT real-time ethernet high-speed figure buses, its bit rate is used
1 gigabit can be reached.It is fully able to meet the need for former Semi-digital observing and controlling mode can not be met using the collection of A/D analog acquisitions passage
Feedback signal demand.Feedback signal is transmitted due to applying the progress networking of EtherCAT real-time ethernets sensor, is solved
Analog feedback signal is easily disturbed in original Semi-digital observing and controlling mode, the problem of autgmentability is poor, improves the standard of experimental data
True property.
The jamproof characteristic of data signal causes it without isolating to circuit, a series of jamproof measures such as shielding
It is set to be worked without other external circuits.Increase sensor is such as needed to only need in computer control with software to newly-increased
Sensor, which carries out networking, can complete extension, without changing hardware, without increasing board, reduce further project cost.
Brief description of the drawings
With reference to the accompanying drawings and combine example and further describe the present invention.Wherein：
Fig. 1 shows the exemplary block diagram of TT＆C system used in the new type digital investigating method of the present invention；
Fig. 2 shows the exemplary process diagram of the new type digital investigating method of the present invention；
Fig. 3 shows the exemplary block diagram of the digital bus network of the present invention；
Fig. 4 shows the exemplary conceptual diagram of the PXI triggerings of the present invention；
Fig. 5 shows the exemplary conceptual diagram of the EtherCAT real-time ethernet data transfers of the present invention；
Fig. 6 shows the exemplary process diagram of the investigating method operation of the present invention.
Embodiment
With reference to the accompanying drawings and examples, the embodiment to the present invention is described in further detail.Implement below
Example is used to illustrate the present invention, but is not limited to the scope of the present invention.
Fig. 1 shows the exemplary block diagram of TT＆C system used in the new type digital investigating method of the present invention,
As shown in figure 1, according to the embodiment, the TT＆C system includes Communication Card 201, sensor network 301 and master controller
101。
Wherein, Communication Card 201 is used to observing and controlling command signal being supplied to first group of sensor 202, and from described first
Group sensor 202 obtains corresponding observing and controlling feedback signal.Specifically, the Communication Card 201 can be 1553B boards, but not
It is limited to this.
Sensor network 301 is used to observing and controlling command signal being supplied to second group sensor 302, and from second group of biography
Sensor 302 obtains corresponding observing and controlling feedback signal.Specifically, the sensor network 301 can be the real-time ether of EtherCAT
Net, but not limited to this.
Master controller 101 is used to the observing and controlling command signal being supplied to the Communication Card 201 and the sensor network
Network 301, and obtain corresponding observing and controlling feedback signal from the Communication Card 201 and the sensor network 301.Specifically
Ground, the master controller 101 can be computer control, but not limited to this.
Fig. 2 shows the exemplary process diagram of the new type digital investigating method of the present invention, as shown in Fig. 2 according to this
Embodiment, the new type digital investigating method that the present invention is provided includes step：S1, master controller provide observing and controlling command signal
To Communication Card and sensor network；The observing and controlling command signal is supplied to first group of sensor by S2, the Communication Card, and
Corresponding observing and controlling feedback signal is obtained from the first group of sensor；The sensor network provides the observing and controlling command signal
Corresponding observing and controlling feedback signal is obtained to second group sensor, and from the second group sensor；S3, the master controller are from institute
State Communication Card and the sensor network obtains corresponding observing and controlling feedback signal.
Wherein, TT＆C system used in new type digital investigating method of the invention can also include PXI firing lines,
For synchronizing triggering to the Communication Card and the sensor network.Correspondingly, the new type digital that the present invention is provided
Changing investigating method can also include：Triggering is synchronized to the Communication Card and the sensor network using PXI firing lines.
Specifically, the PXI firing lines can include PXI Trigger Bus and the external triggering wiring of PXI.Wherein, PXI is triggered
Bus is used to trigger the 1553B boards；PXI it is external triggering wiring be used for the EtherCAT carry out with it is described
The triggering that 1553B boards are synchronised.
Wherein, the observing and controlling command signal can be supplied to 1553B numbers by the computer control by BC controllers
Word bus, and obtain corresponding observing and controlling feedback signal from the 1553B number bus；And, surveyed by network interface by described
Control command signal is supplied to the EtherCAT, and obtains corresponding observing and controlling feedback signal from the EtherCAT.
Wherein, the first group of sensor can include multiple RT substations, be connected to the 1553B number bus, be used for
The observing and controlling command signal is supplied to first group of measurand, and corresponding observing and controlling will be obtained from first group of measurand
Feedback signal is supplied to the 1553B number bus；The second group sensor can include multiple sensor substations, be connected to
The EtherCAT, for the observing and controlling command signal to be supplied into second group of measurand, and will be tested from described second group
The corresponding observing and controlling feedback signal of object acquisition is supplied to the EtherCAT.
Wherein, the sample rate of the first group of sensor can be general sample rate (for example, 1 millisecond/frame), described second
The sample rate of group sensor can be compared with high sampling rate (for example, 100 delicate/frames).
Fig. 3 is the digital bus network structure chart of the present invention, and it is real-time that computer control accesses EtherCAT by network interface
Ethernet, is uploaded in real time with numerous sensor substations composition real-time ethernet line sensor data of going forward side by side.It is again with BC simultaneously
Director mode accesses 1553B buses, and controls multiple RT site works in 1553B buses, including command signal and order
Issue and feedback signal passback remote measurement.
Fig. 4 is the PXI trigger theory figures of the present invention, and computer-internal uses PXI buses, and 1553 boards are inserted in peripheral hardware groove 2
In, computer synchronizes triggering by internal PXI Trigger Bus to 1553 boards, while it is also by the external triggerings of PXI
PXI trigger signals are led to EtherCAT sensors to realize the triggering synchronous with EtherCAT sensors of 1553 boards by wiring.
Fig. 5 is the EtherCAT real-time ethernet data transmission principle figures in the present invention, and whole piece message is by computer control
Each slave station 1 ... n that device is come downwards on real-time ethernet, the data that often it can all collect oneself by a slave station are with number
Slave station n ... 1 is sequentially passed through again when message is returned after being inserted into according to form in message, and slave station is when message passes through again by oneself
Newly-generated data insertion message, computer is again to message by real-time ethernet when waiting this frame message to pass computer control back
Protocol requirement is resolved all slave station data that can obtain on whole piece network.
Fig. 6 is the investigating method operational flow diagram of the present invention, as shown in fig. 6, computer control leads to before on-test
Cross software to initialize 1553B boards and EtherCAT real-time ethernet sensors, its Refresh Data rate is set to 1 milli
Second and 100 microseconds, and its mode of operation is set to passive triggering pattern.Triggered when on-test by the output of PXI buses
Contact exports a high level to trigger its work to 1553B boards and EtherCAT real-time ethernets sensor simultaneously, now
1553B and EtherCAT real-time ethernets will simultaneously work and carry out hardware timing (1553B according to respective hardware timer clock
1 millisecond of bus, the microsecond of EtherCAT real-time ethernets 100) automaticdata passback, now computer control only needs to return
Data converted, be shown on screen and preserve after calculating, at the same will continue send data be put into 1553B boards
In output buffer.After end to be tested, computer control senses 1553B boards and EtherCAT real-time ethernets
The work of device stops and resetted, and test data form is obtained after the data collected are analyzed and processed.
Description of the invention is provided for the sake of example and description, and is not exhaustively or by the present invention
It is limited to disclosed form.Many modifications and variations are obvious for the ordinary skill in the art.Select and retouch
State embodiment and be more preferably to illustrate the principle and practical application of the present invention, and one of ordinary skill in the art is managed
The solution present invention is so as to design the various embodiments with various modifications suitable for special-purpose.
Claims (5)
1. a kind of totally digitilized investigating method, it is characterised in that including：
Observing and controlling command signal is supplied to Communication Card and sensor network by master controller；
The observing and controlling command signal is supplied to first group of sensor by the Communication Card, and is obtained from the first group of sensor
Corresponding observing and controlling feedback signal；
The observing and controlling command signal is supplied to second group sensor by the sensor network, and is obtained from the second group sensor
Take corresponding observing and controlling feedback signal；
The master controller obtains corresponding observing and controlling feedback signal from the Communication Card and the sensor network；
Further, methods described also carries out same using PXI firing lines to the Communication Card and the sensor network
Step triggering；
Further, the Communication Card is 1553B boards, and the sensor network is EtherCAT real-time ethernets, described
Master controller is computer control；
Further, the PXI firing lines include：
PXI Trigger Bus, for being triggered to the 1553B boards；
The external triggering wiring of PXI, for being carried out to the EtherCAT real-time ethernets and touching that the 1553B boards are synchronised
Hair.
2. the method as described in claim 1, it is characterised in that observing and controlling flow includes：
The master controller is initialized to the Communication Card and the sensor network, sets the Communication Card and institute
The sample rate of sensor network is stated, and the mode of operation of the Communication Card and the sensor network is set to passive trigger mode
Formula；
The Communication Card and the sensor network wait trigger signal；
The master controller synchronizes triggering by the PXI firing lines to the Communication Card and the sensor network,
The Communication Card and the sensor network work and according to the respective sample rate return data simultaneously；
The master controller is handled the return data, and makes at the end of observing and controlling the Communication Card and the sensing
Device network is stopped and resetted.
3. method as claimed in claim 1 or 2, it is characterised in that：
The observing and controlling command signal is supplied to 1553B number bus by the computer control by BC controllers, and from institute
State 1553B number bus and obtain corresponding observing and controlling feedback signal；And, the observing and controlling command signal is provided by network interface
Corresponding observing and controlling feedback letter is obtained to the EtherCAT real-time ethernets, and from the EtherCAT real-time ethernets
Number.
4. method as claimed in claim 3, it is characterised in that：
The first group of sensor includes multiple RT substations, the 1553B number bus is connected to, for the observing and controlling to be instructed
Signal is supplied to first group of measurand, and will be supplied to from the corresponding observing and controlling feedback signal of first group of measurand acquisition
The 1553B number bus；
The second group sensor includes multiple sensor substations, is connected to the EtherCAT real-time ethernets, for by institute
State observing and controlling command signal and be supplied to second group of measurand, and the corresponding observing and controlling obtained from second group of measurand is fed back
Signal is supplied to the EtherCAT real-time ethernets.
5. such as method according to any one of claims 1 to 2, it is characterised in that：
The sample rate of the first group of sensor is general sample rate, and the sample rate of the second group sensor is higher sampling
Rate；
Wherein, the general sample rate is 1 millisecond/frame, and described is 100 delicate/frames compared with high sampling rate.
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| CN201410425989.0A CN104678942B (en) | 2014-08-26 | 2014-08-26 | A kind of totally digitilized investigating method |
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| CN104678942B true CN104678942B (en) | 2017-10-24 |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105759655A (en) * | 2016-04-14 | 2016-07-13 | 四川隧唐科技股份有限公司 | Multi-sensor synchronous control method |
| CN110806710B (en) * | 2019-11-20 | 2021-07-20 | 瑞玛思特(北京)科技有限公司 | Measurement and control system and method based on fusion of multiple sensors |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101913427A (en) * | 2010-08-04 | 2010-12-15 | 北京航空航天大学 | Avionics system suitable for multi-purpose unmanned aircraft |
| CN102288346A (en) * | 2011-07-11 | 2011-12-21 | 南京航空航天大学 | Miniaturized digital large-scale sensor array impact monitoring system |
| KR101321601B1 (en) * | 2013-02-12 | 2013-10-28 | 주식회사 아진엑스텍 | Controller for multiple robot using wireless teaching pendant and method for controlling thereof |
| CN103631190A (en) * | 2013-11-05 | 2014-03-12 | 上海交通大学 | Monitoring system based on EtherCAT network |
| CN103777526A (en) * | 2014-03-03 | 2014-05-07 | 上海科梁信息工程有限公司 | Simulation testing system of integrated electronic system of satellite |
-
2014
- 2014-08-26 CN CN201410425989.0A patent/CN104678942B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101913427A (en) * | 2010-08-04 | 2010-12-15 | 北京航空航天大学 | Avionics system suitable for multi-purpose unmanned aircraft |
| CN102288346A (en) * | 2011-07-11 | 2011-12-21 | 南京航空航天大学 | Miniaturized digital large-scale sensor array impact monitoring system |
| KR101321601B1 (en) * | 2013-02-12 | 2013-10-28 | 주식회사 아진엑스텍 | Controller for multiple robot using wireless teaching pendant and method for controlling thereof |
| CN103631190A (en) * | 2013-11-05 | 2014-03-12 | 上海交通大学 | Monitoring system based on EtherCAT network |
| CN103777526A (en) * | 2014-03-03 | 2014-05-07 | 上海科梁信息工程有限公司 | Simulation testing system of integrated electronic system of satellite |
Non-Patent Citations (3)
| Title |
|---|
| 基于AFDX的网络测试与仿真技术设备研究;陈元;《电工技术学报》;20131231;第28卷(第S2期);第66-70页 * |
| 基于PXI/LXI混合总线的雷达测试系统研制;李洪鹏;《万方学位论文》;20140331;正文第8-43页 * |
| 基于PXI的1553B总线测试系统设计;潘永安等;《信息与电脑》;20110430(第4期);第49页 * |
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