CN108333445A - A kind of instrument management method of the data acquisition instrument based on VxWorks - Google Patents
A kind of instrument management method of the data acquisition instrument based on VxWorks Download PDFInfo
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- CN108333445A CN108333445A CN201711435597.2A CN201711435597A CN108333445A CN 108333445 A CN108333445 A CN 108333445A CN 201711435597 A CN201711435597 A CN 201711435597A CN 108333445 A CN108333445 A CN 108333445A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
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Abstract
The present invention provides a kind of instrument management methods of the data acquisition instrument based on VxWorks, realize the unified management of data acquisition instrument under VxWorks real time operating system.Including PCI instruments are classified according to simulation input AI, simulation output AO, numeral input DI, numeral output DO, instrument handle is obtained further according to the model of instrument, virtual instrument number, Bus number, device number, number of modules；The corresponding device information resource chained list of the quasi-instrument is searched in instrument resource chained list, reads instrument calibration data, the instrument handle is bound with corresponding device information resource link table information；The instrument handle of binding and instrument resource chained list, create task, obtain task handle；According to the task handle, knows the corresponding specific instrument essential information of the handle, timing resources, triggering resource, analog physical channel is created with this, which is parsed, real physical channel is obtained.
Description
Technical field
The invention belongs to instrument driver software fields, and in particular to a kind of instrument of the data acquisition instrument based on VxWorks
Device management method.
Background technology
Data acquisition refers to measuring：Voltage, electric current, temperature, pressure, sound, coded data etc. be electrical or physical phenomenon
Process.At present in measurement and control field, data acquisition instrument is in occupation of the huge market share, the hardware module packet that is related to
Include AD (analog signal is converted into digital signal module), DA (digital signal is converted into analog signal module), IO (input and output moulds
Block) etc. multiple types and Multiple Type, due to ununified software development specification, user changes in secondary development or HardwareUpgring
The instrument driving of Dai Shi, different manufacturers or different developer's exploitations, is required for development system program again, considerably increases out
Send out period and cost.
Mainly there is NI and Ling Hua science and technology in the producer for having relatively complete data acquisition hardware and software platform, they all there are one
Common feature is exactly based on VISA (virtual instrment software architecture, virtual instrument software
Frame) unified driving interface is provided for data acquisition equipment under a windows environment on the basis of library.However in VxWorks
Also a large amount of data acquisition instrument is applied under this real time operating system, but without supporting that this data acquisition instrument is unified
The instrument driving of management and unified interface.
Invention content
In view of this, the present invention provides a kind of instrument management method of the data acquisition instrument based on VxWorks, realize
The unified management of data acquisition instrument under VxWorks real time operating system.
The present invention to achieve the above object, adopts the following technical scheme that：
A kind of instrument management method of the data acquisition instrument based on VxWorks, includes the following steps：
PCI instruments are classified according to simulation input AI, simulation output AO, numeral input DI, numeral output DO, then
Instrument handle is obtained according to the model of instrument, virtual instrument number, Bus number, device number, number of modules；
The corresponding device information resource chained list of the quasi-instrument is searched in instrument resource chained list, reads instrument calibration data,
The instrument handle is bound with corresponding device information resource link table information；
According to the instrument handle of binding and instrument resource chained list, task is created, obtains task handle；
According to the task handle, the corresponding specific instrument essential information of the handle, timing resources, triggering money are known
Source creates analog physical channel with this, is parsed to the analog physical channel, obtains real physical channel.
Further, after this method, removing task discharges resource, terminates the control to instrument.
Further, the device information resource chained list include instrument essential information resource, instrument timing resources, instrument touch
Send out resource.
Further, the instrument essential information resource includes：Instrument address, instrument model, instrument channel type, channel
Number, instrument type, unit, coupled modes, impedance mode, gain factor, input mode, PFI, maximin, calibration point,
Data-transmission mode.
Further, the instrument timing resources include：Instrument address, instrument model, clock source, samples edges, sampling
Pattern, maximum collection point, clock type, maximum sample rate, PFI number.
Further, the instrument triggering resource includes instrument address, instrument model, digital edge trigger source, digital side
Along triggering edge.
Beneficial effects of the present invention：
The present invention carries out taxonomic revision by creating device information chained list, to the instrument in resource, realizes that VxWorks are real
When operating system under data acquisition instrument drive software be managed collectively, reduce due to HardwareUpgring etc. change system-Level software
Time, the lifting system development cycle reduces cost and risk.
Specific implementation mode
Computer is connected with the embedded controller of the prepackage vxworks operating system by cable, embedded control
Device processed is inserted into PXI cabinets, and an AI modules is taken to be also inserted into cabinet, and developing instrument is used to be carried out for WorkBench on computer
Software for Design is developed.
Method provided by the present invention the specific steps are：
S00, instrument essential information resource chained list content is defined, including：Instrument address, instrument model, instrument channel type,
Port number, instrument type, unit, coupled modes, impedance mode, gain factor, input mode, PFI, maximin, calibration
Point, data-transmission mode；Instrument timing resources chained list content is defined, including：Instrument address, instrument model, clock source, sampling side
Edge, sampling configuration, maximum collection point, clock type, maximum sample rate, programmable functions interface PFI (program function
Interface) number；It defines instrument and triggers resource chained list content：Instrument address, instrument model, digital edge trigger source, number
Edging trigger edge.
S01, search resource in our company's PCI instruments, by its by simulation input AI, simulation output AO, numeral input DI,
Press the ascending sequences of device PCI number pciDeviceNo again after numeral output DO classification, and arrange corresponding instrument model,
Virtual instrument number, Bus number BusNum and device number DevNum are set, initializes after the instrument obtains control handle and resets again；
S02, corresponding instrument essential information resource is searched in resource chained list, search corresponding instrument timing resources, look into
Corresponding instrument triggering resource is looked for, instrument calibration data are read；
The device information that S03, foundation lock, creates certain task, obtains task handle taskHandle；
S04, analog physical channel is created, analog physical channel is carried out to parse real physical channel, it will
TaskHandle is bound with instrument channel, and the channel attributes are arranged；
The operations such as S05, other settings, acquisition, stopping being operated by task handle taskHandle；
S06, after control, resource can be discharged by removing task, terminate the control to the instrument；
It can lead to when user's use and above-mentioned steps was called to execute testing process realization instrument controlling.
In conclusion the above is merely preferred embodiments of the present invention, being not intended to limit the scope of the present invention.
All within the spirits and principles of the present invention, any modification, equivalent replacement, improvement and so on should be included in the present invention's
Within protection domain.
Claims (6)
1. a kind of instrument management method of the data acquisition instrument based on VxWorks, it is characterised in that：
PCI instruments are classified according to simulation input AI, simulation output AO, numeral input DI, numeral output DO, further according to instrument
Model, virtual instrument number, Bus number, device number, the number of modules of device obtain instrument handle；
The corresponding device information resource chained list of the quasi-instrument is searched in instrument resource chained list, instrument calibration data is read, by institute
Instrument handle is stated to be bound with corresponding device information resource link table information；
According to the instrument handle of binding and instrument resource chained list, task is created, obtains task handle；
According to the task handle, the corresponding specific instrument essential information of the task handle, timing resources, triggering money are known
Source creates analog physical channel with this, is parsed to the analog physical channel, obtains real physical channel.
2. a kind of instrument management method of the data acquisition instrument based on VxWorks as described in claim 1, feature exist
In：The device information resource chained list includes instrument essential information resource, instrument timing resources, instrument triggering resource.
3. a kind of instrument management method of the data acquisition instrument based on VxWorks as claimed in claim 2, feature exist
In：The instrument essential information resource includes：Instrument address, instrument model, instrument channel type, port number, instrument type, list
Position, coupled modes, impedance mode, gain factor, input mode, PFI, maximin, calibration point, data-transmission mode.
4. a kind of instrument management method of the data acquisition instrument based on VxWorks as claimed in claim 2, feature exist
In：The instrument timing resources include：Instrument address, instrument model, clock source, samples edges, sampling configuration, maximum acquisition
Point, clock type, maximum sample rate, PFI number.
5. a kind of instrument management method of the data acquisition instrument based on VxWorks as claimed in claim 2, feature exist
In：The instrument triggering resource includes instrument address, instrument model, digital edge trigger source, digital edge triggering edge.
6. such as a kind of instrument management methods of the data acquisition instrument based on VxWorks of any one of claim 1-5, feature
It is：After this method, removing task discharges resource, terminates the control to instrument.
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| CN201711435597.2A CN108333445B (en) | 2017-12-26 | 2017-12-26 | Instrument management method of data acquisition instrument based on VxWorks |
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| CN201711435597.2A CN108333445B (en) | 2017-12-26 | 2017-12-26 | Instrument management method of data acquisition instrument based on VxWorks |
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| CN108333445B CN108333445B (en) | 2020-04-03 |
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