CN101425224A - Data acquisition method for real time monitoring system - Google Patents
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- CN101425224A CN101425224A CNA200710166055XA CN200710166055A CN101425224A CN 101425224 A CN101425224 A CN 101425224A CN A200710166055X A CNA200710166055X A CN A200710166055XA CN 200710166055 A CN200710166055 A CN 200710166055A CN 101425224 A CN101425224 A CN 101425224A
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Abstract
The invention provides a data collection method in a real-time monitoring system, which comprises the following steps: multipath data is collected by the application software of the real-time monitoring system, wherein the application software of the real-time monitoring system is used for dividing program collecting the multipath data into different subsidiary modules, and each subsidiary module controls at least one channel for executing the function of data collection; a thread is designated for each subsidiary module; different memory space is respectively designated for each thread in the memory of a computer; multiple threads are executed simultaneously; and data is collected for multiple channels. All channels in a data channel of the same type in the application software of the real-time monitoring system can execute operation simultaneously by using the data collection method. The data collection method prevents the data collection of a software system from lagging behind the data collection of an external hardware data collection system, and consequently, the reliability of the real-time monitoring system is improved.
Description
Technical field
The present invention relates to field of computer technology, particularly relate to a kind of collecting method that in real-time monitoring system, utilizes computing machine to carry out.
Background technology
When needing in existing real-time monitoring system that simultaneously two or more devices are carried out data acquisition and by being installed on application software on the computing machine when two-way gathered or multichannel data are handled respectively in real time, often two-way or the multichannel data of being gathered can't be read in the computing machine simultaneously, thereby greatly reduce the real-time performance of system because of the restriction of application software function.
For example, in wheel box fatigue data acquisition system, need simultaneously two motors that operate under the different conditions to be carried out data acquisition, and the data that collect are input in the computing machine, so that the specific application software that is installed in the computing machine can be monitored two motors in real time according to these data.At present, using more software in this type of engineering is graphical programming software LabVIEW, this type of graphical application software all provides a plurality of analog channel and counting channels that are used for the data input, and a plurality of digital channels that are used for data output, wherein analog channel, counting channel and digital channel can be carried out simultaneously to the reading or exporting of data, but a plurality of passages in all types of passages are carried out successively to the read operation of data.As shown in Figure 1, analog channel 1 just began reading of data after promptly analog channel 0 reading of data finished, and in like manner, as shown in Figure 1, individual count passage and each digital channel are also carried out successively to the operation of data.
This be because, in the use of existing graphical application software, program is divided into a plurality of submodules, each submodule is often repeatedly called, this moment is if many threads send a plurality of call instructions to a certain submodule simultaneously, program is divided into a plurality of submodules, the only designated thread of each submodule, and a submodule often has multiple function, at this moment, if simultaneously this submodule is sent a plurality of call instructions to carry out multiple function, after described application software must wait until that first call instruction is finished, begin to carry out second call instruction again, this has just reduced the efficient that program is carried out.Be example with above-mentioned wheel box fatigue data acquisition system still, each analog channel of calling same submodule can only be carried out the operation of reading of data successively.For the experiment that needs higher reading rate such as this class of wheel box torture test, this greatly reduces the reliability of the system that equipment is monitored in real time, and when monitored equipment generation unusual condition, because data read rates is low to be caused software systems in time to report to the police or send steering order, thereby cause damage even personnel's injury of monitored equipment.
Summary of the invention
The objective of the invention is the problem that can't play a role simultaneously, a kind of collecting method that can carry out multi-channel data acquisition simultaneously and be used for real-time monitoring system is provided for each data channel that overcomes in the real-time monitoring system.
In engineering is used, adopt the graphical application software of existing method operation not support a plurality of threads to call same submodule simultaneously, its reason is, described application software is only opened up an internal memory that is used to store data for each submodule, same submodule is called at every turn, and the data of its local variable are all existed in the same memory address.If this application software is called same submodule simultaneously under different threads, so described a plurality of threads will carry out the data write operation to this piece memory address simultaneously, thereby the confusion that causes data in this address, thereby, when a submodule during by a plurality of thread dispatching, this submodule also can only be performed on a plurality of threads successively.
Therefore, the corresponding relation by changing submodule and thread and the corresponding relation of submodule and internal memory are realized a plurality of threads simultaneously to the calling of this submodule, thereby same submodule calling on multithreading can be performed simultaneously.
The invention provides a kind of collecting method that in real-time monitoring system, uses, this method comprises uses the application software of real-time monitoring system that multichannel data is gathered, wherein, in the application software of described real-time monitoring system, the procedure division that will be used for that multichannel data is gathered is different submodule, and each described submodule is controlled at least one passage and carried out data acquisition function; Each described submodule is specified a thread respectively; Specify different memory headrooms in calculator memory, for respectively each thread; Carry out a plurality of threads simultaneously, simultaneously a plurality of passages are carried out data acquisition.
The collecting method that is used for handling simultaneously multichannel data that the application of the invention provides, can make executable each function of program corresponding one by one with thread, each thread is corresponding one by one with internal memory, thereby each function in the described application software is carried out synchronously, for example, can make each analog channel while image data of Lab VIEW, the individual count passage is counted and each digital channel while output data simultaneously, thereby improved the input of data, output speed, avoid software systems that the collection of data is lagged behind the collection of outside hardware data acquisition system to data, thereby improved the reliability of real-time monitoring system.In addition, according to preferred implementation of the present invention, data processing method provided by the invention also is included in the program of application software and replaces numeric constant with control type numerical value control, thereby realizes the recycling of internal memory.Can save the shared memory headroom of working procedure greatly like this, thereby further improve the speed of data acquisition, and reduce the requirement of program, thereby reduce system cost the computer hardware configuration.After program run finishes, internal memory on the master routine Properties palette that passes through to be moved uses option, can view this master routine and reduce to original sixth in the EMS memory occupation amount of run duration, this shows, by carrying out aforesaid operations, obviously reduced the occupancy of program to internal memory.
Description of drawings
Fig. 1 has shown the workflow synoptic diagram of each data channel among the existing LabVIEW;
Fig. 2 has shown and has adopted behind the collecting method provided by the invention the workflow synoptic diagram of each data channel among the LabVIEW;
Fig. 3 has shown the hardware configuration synoptic diagram of an example of collecting method provided by the invention;
Fig. 4 has shown the synoptic diagram that the submodule of collecting method provided by the invention is divided.
Embodiment
The invention provides a kind of collecting method that in real-time monitoring system, uses, this method comprises uses the application software of real-time monitoring system that multichannel data is gathered, wherein, in the application software of described real-time monitoring system, the procedure division that will be used for that multichannel data is gathered is different submodule, and each submodule is controlled at least one passage and carried out data acquisition function; Each described submodule is specified a thread respectively; Specify different memory headrooms in calculator memory, for respectively each thread; Carry out a plurality of threads simultaneously, simultaneously a plurality of passages are carried out data acquisition, as shown in Figure 2.
The application software of described real-time monitoring system can be the engineering application software of multiple graphic programming, for example, and softwares such as LabVIEW or Lab Windows/CVI.Wherein, at present the application software of maximum real-time monitoring systems should be arranged in reality is LabVIEW software.
Below in conjunction with a concrete example collecting method provided by the invention is described.
When collecting method provided by the invention being applied to wheel box fatigue data acquisition system and described application software and being LabVIEW, outside hardware acquisition system as shown in Figure 3, wherein, test-bed 1 links to each other with the input end of sensor 2, in the present embodiment, sensor 2 comprises the two-way oil temperature sensor, two-way speed probe and two-way torque sensor, wherein, the output terminal of two-way oil temperature sensor and two-way speed probe links to each other with signal conditioning circuit 3 respectively, the output terminal of two-way torque sensor links to each other with serial equipment 6 respectively, the output terminal of signal conditioning circuit 3 links to each other with each data input pin of capture card 4, each data output end of capture card 4 links to each other with computing machine 5 respectively with each output terminal of serial equipment 6, computing machine 5 also links to each other with control panel 7, and control panel 7 also links to each other with test-bed 1.Wherein, be placed with gearbox motor to be measured on the test-bed 1, in this test, need simultaneously two motors to be carried out data acquisition, wherein one is drive motor, being used for simulated engine provides rotating speed to wheel box, and another is a loading motor, thereby is used for providing the size of reactive torque control total system institute transfer of torque to total system.Oil temperature sensor, speed probe and torque sensor are respectively applied for oil temperature, rotating speed and the torque of gathering motor.Wherein, warm data of oil and rotary speed data are sent to each data input pin of capture card 4 respectively by signal conditioning circuit 3, signal conditioning circuit 3 can carry out necessary processing such as filtering to data, and torque data is conveyed in the LabVIEW software that is installed in the computing machine 5 by serial equipment 6. Analog channel 0 and 1 among the LabVIEW is respectively applied for the oily temperature data of gathering two motors; the serial equipment port 0 and 1 of LabVIEW is used to gather the torque data of two motors and counting mouthful 0 and 1 and is used for gathering two rotating speed of motor data respectively; software systems among the LabVIEW are used for the running status according to two motors of these input data in real time controls; the digital channel 0-3 of LabVIEW exports the outage of controlling torque sensor energize respectively; the rotating speed protection is reported to the police; the signal that the oil temperature exceeds standard and reports to the police makes control panel 7 control the motor in the test-bed 1 according to these signals.
As shown in Figure 4, carry out the input operation of data simultaneously in order to realize the analog channel 0 and 1 among the LabVIEW, at first, originally the program of operation that is used to control analog channel 0 and 1 that belongs to same submodule 8 is constituted two independently submodules 9 and 10 respectively, wherein submodule 9 is used to carry out the function of control analog channel 0, submodule 10 is used to carry out the function of control analog channel 1, and specify a thread for respectively submodule 9 and 10, and specify different memory headrooms respectively with 10 in calculator memory, for submodule 9.Thus, submodule 9,10 can be called simultaneously by different threads, and the situation of data corruption in the memory address can not occur.Last submodule 9 and 10 is finished respectively, and useful data flow into next node, and the memory headroom corresponding with submodule 9 and 10 closed.
In like manner, to the counting mouth 0 and 1 of LabVIEW, serial equipment port 0 and 1 and digital channel 0-3 to implement the implementation process of the process of data processing method provided by the invention and above-mentioned analog channel 0 and 1 similar, do not repeat them here.
In addition, the program in the LabVIEW figures application software mainly is the data flow driven type.Data transfer often needs to duplicate a copy during to different node.This is that described application software causes wrong a kind of data protection measure of being done in order to prevent that data from being changed by node.Having only the destination node of working as is read-only node, in the time of can not doing any change to the input data, does not just backup at these node places.For example, array indexing node (index) is can not change array value, and LabVIEW does not here just backup for the input array.Some LabVIEW program, such as the program that relates to big array operation, memory consumption is very big.Its main cause be exactly LabVIEW be that array data has generated too much copy when computing.
Owing to comprise numeric constant in the described submodule, and the storage of numeric constant need take a large amount of memory headrooms, therefore, under the preferable case, in order further to reduce program run taking to calculator memory, data processing method provided by the invention also comprises following preferred steps: replace numeric constant with control type numerical value control in the program of described application software, thereby realize the recycling of internal memory.The benefit of doing like this is that control type numerical value control can cover last data with current data automatically, thereby the memory headroom that takies is reduced greatly when adopting control type numerical value control to carry out the data input and output.
In addition, when the input and output of described program all linked to each other with shift register, collecting method provided by the invention comprised that also being set to single cycle by this program realizes reusing of internal memory.Like this, system only need be respectively the inputoutput data of program and open up memory headroom to be used for storage, and do not need the data of inner each node of used this program in the program run are stored, and promptly discharge the memory headroom that it takies later in this submodule operation, thereby reduced program taking memory headroom.Thereby, can under the prerequisite that does not influence the program run reliability, save the shared memory headroom of program run to greatest extent.
Claims (7)
1, a kind of collecting method that in real-time monitoring system, uses, this method comprises uses the application software of real-time monitoring system that multichannel data is gathered, it is characterized in that, in the application software of described real-time monitoring system, the procedure division that will be used for that multichannel data is gathered is different submodule, and each described submodule is controlled at least one passage and carried out data acquisition function; Each described submodule is specified a thread respectively; Specify different memory headrooms in calculator memory, for respectively each thread; Carry out a plurality of threads simultaneously, simultaneously a plurality of passages are carried out data acquisition.
2, collecting method according to claim 1 is characterized in that, the application software of described real-time monitoring system is a LabVIEW software.
3, collecting method according to claim 1 is characterized in that, the application software of described real-time monitoring system is a LabWindows/CVI software.
4; according to the described collecting method of each claim among the claim 1-3; it is characterized in that; described a plurality of passage is respectively analog channel 0 and 1; digital channel 0-3; serial equipment passage 0 and 1 and counting mouthful 0 and 1; wherein; when described collecting method being applied to the wheel box fatigue data acquisition system of motor; described analog channel 0 and 1 is respectively applied for the oily temperature data of gathering two motors; described serial equipment passage 0 and 1 is respectively applied for the torque data of gathering two motors; described counting mouth 0 and 1 is used for gathering two rotating speed of motor data respectively, and described digital channel 0-3 exports the outage of controlling torque sensor energize respectively; the rotating speed protection is reported to the police; the signal that the oil temperature exceeds standard and reports to the police.
5, according to the described collecting method of each claim among the claim 1-3, it is characterized in that, comprise numeric constant in the described submodule.
According to the described collecting method of each claim among the claim 1-3, it is characterized in that 6, this method also is included in the program of application software of described real-time monitoring system and replaces numeric constant with control type numerical value control.
According to the described collecting method of each claim among the claim 1-3, it is characterized in that 7, when the input and output of described program all linked to each other with shift register, this method also comprises was arranged to single cycle with described program.
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| CNA200710166055XA CN101425224A (en) | 2007-10-30 | 2007-10-30 | Data acquisition method for real time monitoring system |
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| CNA200710166055XA CN101425224A (en) | 2007-10-30 | 2007-10-30 | Data acquisition method for real time monitoring system |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102722150A (en) * | 2012-06-07 | 2012-10-10 | 中国东方电气集团有限公司 | Multi-way waveform acquiring and displaying and data analyzing and processing system based on universal serial |
| CN103378995A (en) * | 2012-04-24 | 2013-10-30 | 中兴通讯股份有限公司 | Method, server and system for monitoring pipelines in distributed mode |
| CN105022313A (en) * | 2014-05-07 | 2015-11-04 | 奚涛 | Multipath data acquisition control module |
| CN112224217A (en) * | 2019-06-30 | 2021-01-15 | 比亚迪股份有限公司 | Integrated control chip, environment recognition method and device, storage medium and vehicle |
| CN113590106A (en) * | 2021-06-25 | 2021-11-02 | 许继电气股份有限公司 | Industrial control graphical programming environment operation state data monitoring system and method |
-
2007
- 2007-10-30 CN CNA200710166055XA patent/CN101425224A/en active Pending
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103378995A (en) * | 2012-04-24 | 2013-10-30 | 中兴通讯股份有限公司 | Method, server and system for monitoring pipelines in distributed mode |
| CN103378995B (en) * | 2012-04-24 | 2016-06-22 | 中兴通讯股份有限公司 | The method of distributed monitoring pipeline, server and system |
| CN102722150A (en) * | 2012-06-07 | 2012-10-10 | 中国东方电气集团有限公司 | Multi-way waveform acquiring and displaying and data analyzing and processing system based on universal serial |
| CN105022313A (en) * | 2014-05-07 | 2015-11-04 | 奚涛 | Multipath data acquisition control module |
| CN112224217A (en) * | 2019-06-30 | 2021-01-15 | 比亚迪股份有限公司 | Integrated control chip, environment recognition method and device, storage medium and vehicle |
| CN112224217B (en) * | 2019-06-30 | 2021-09-03 | 比亚迪股份有限公司 | Integrated control chip, environment recognition method and device, storage medium and vehicle |
| CN113590106A (en) * | 2021-06-25 | 2021-11-02 | 许继电气股份有限公司 | Industrial control graphical programming environment operation state data monitoring system and method |
| CN113590106B (en) * | 2021-06-25 | 2022-04-08 | 许继电气股份有限公司 | Industrial control graphical programming environment operation state data monitoring system and method |
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