CN101660401B - Real-time alarming method by monitoring shutdown of pumping machine based on acceleration sensor - Google Patents
Real-time alarming method by monitoring shutdown of pumping machine based on acceleration sensor Download PDFInfo
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- CN101660401B CN101660401B CN2009100661588A CN200910066158A CN101660401B CN 101660401 B CN101660401 B CN 101660401B CN 2009100661588 A CN2009100661588 A CN 2009100661588A CN 200910066158 A CN200910066158 A CN 200910066158A CN 101660401 B CN101660401 B CN 101660401B
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Abstract
The invention relates to a real-time alarming method by monitoring shutdown of a pumping machine based on an acceleration sensor. The acceleration signal of a pumping rod of the pumping machine is sequentially sampled; after the processing of noise elimination and A/D conversion, differences of at least three collected acceleration data are sequentially calculated and the absolute values are taken so as to be compared with the specified minimum thresholds, thus judging whether the pumping machine is stopped or not; therefore, the accurate alarming is realized when the pumping machine is stopped, the manpower resource is saved, and the pumping efficiency of the pumping machine in indirectly improved simultaneously.
Description
Technical field
The present invention relates to a kind of oil pumper and stop the well monitoring method, particularly a kind of alarming method by monitoring shutdown of pumping machine based on acceleration transducer.
Background technology
Widely used oil pumper mainly contains beam pumping unit, two horse head oil pumper, dwarf forms oil pumper etc. on the oil field; The motion state that horse head or walking beam are in swing all the time or rotate during these oil pumper work is shut down in order in time to find the oil pumper failover, and is in time handled and rise oil; Usually all be provided with pipe well or patrol the well personnel oil pumper working condition is observed; Labor intensive resource not only, and often can not when shutdown of pumping machine, in time find, pumping efficiency influenced.
Summary of the invention
The purpose of this invention is to provide a kind of real-time alarming method by monitoring shutdown of pumping machine, realized, and in time report to the police the judgement promptly and accurately of shutdown of pumping machine situation based on acceleration transducer.
For realizing above-mentioned purpose, technical scheme of the present invention is: a kind of real-time alarming method by monitoring shutdown of pumping machine based on acceleration transducer is provided, and this method may further comprise the steps:
(1) acceleration signal to the oil pumping machine oil pumping bar carries out sequential sampling;
(2) acceleration signal of being gathered is carried out the A/D conversion, obtain the relevant acceleration data;
(3) at least 3 acceleration informations of being gathered are carried out difference in order and calculate, and take absolute value;
(4) absolute value with the difference that calculates compares with the minimum threshold value of setting respectively, if all less than this minimum threshold value, then carries out stopping alarm; If have at least one to be not less than this minimum threshold value, execution in step (2) then.
Set the sampling period, and acceleration signal is carried out uniform sampling, the span of sampling period t is: 0.1T≤t≤6T and
And if
The initial moment t of time sampling
0With respective stroke zero crossing t constantly in the middle of the acceleration signal in the cycle
A0Should satisfy
Wherein T is the stroke cycle of sucker rod when normally moving, and N is a positive integer, and J is a positive odd number.
The span of the sampling period t that further optimizes is:
The design formulas of described minimum threshold value is D=γ * | A
MAX-A
MIN|, wherein D is minimum threshold value, γ is the weights coefficient, A
MAXBe the maximum acceleration value in the upper and lower its stroke of oil pumping machine oil pumping bar, A
MINBe the minimum acceleration value in the upper and lower its stroke of oil pumping machine oil pumping bar.
The span of described weights coefficient gamma is 0.01≤γ≤0.1.
The absolute value of described difference is with the acceleration information A of each adjacent in order collection point
i, A
I-1, A
I-2A
I-NCalculate for foundation, the absolute value that obtains difference does
Δ A
i=| A
i-A
I-1|, Δ A
I-1=| A
I-1-A
I-2|, Δ A
I-2=| A
I-2-A
I-3| ... Δ A
I-N+1=| A
I-N+1-A
I-N|, wherein i is the sequence number of current collection point, N is a natural number.
If the absolute value of adjacent two differences is all less than minimum threshold value; Then carry out stopping alarm, be the accuracy that guarantees that stopping alarm is judged, can be worth absolute value all with less than minimum threshold value to compare adjacent three differences; If all less than minimum threshold value, then carry out stopping alarm.
After the stopping alarm signal occurring, confirm with the absolute value of adjacent follow-up two differences and the stopping alarm that relatively carries out of minimum threshold value again,, otherwise confirm that alarm signal is an interfering signal, continue monitoring if all then send the stopping alarm signal less than minimum threshold value.
The invention described above utilizes the acceleration signal of oil pumping machine oil pumping bar as input signal; Its signal source other method relatively is more directly reliable; In addition, adopt the absolute value of the difference that the acceleration information gathered in order calculates to judge that with the method that the minimum threshold value of setting compares sucker rod is work or shuts down respectively, realized that shutdown of pumping machine promptly and accurately judges and report to the police; Save manpower, improved the pumping efficiency of oil pumper simultaneously indirectly.
Description of drawings
Fig. 1 is an alarming method by monitoring shutdown flow chart of the present invention;
Fig. 2 is the absolute value computational methods sketch map of first kind of acceleration difference;
Fig. 3 is the absolute value computational methods sketch map of second kind of acceleration difference;
Fig. 4 is first kind of shutdown of pumping machine judgment rule sketch map;
Fig. 5 is second kind of shutdown of pumping machine judgment rule sketch map;
Fig. 6 is the third shutdown of pumping machine judgment rule sketch map.
The specific embodiment
Embodiment one
Real-time alarming method by monitoring shutdown of pumping machine based on acceleration transducer of the present invention as shown in Figure 1 may further comprise the steps:
(1) the acceleration signal sampling period that the oil pumping machine oil pumping bar is set is t;
(2) read the acceleration signal of the sucker rod that acceleration transducer gathers at interval according to the sampling period, carry out the A/D conversion, obtain the relevant acceleration data;
(3) judge whether the acceleration signal of being gathered is noise signal, if noise signal then reads again, if normal signal is then preserved these data;
(4) calculate current acceleration information A
iPreserved acceleration information A with an adjacent last moment
I-1The absolute value of difference, and preserve the absolute value delta A of this difference
i, as shown in Figure 2;
(5) with the absolute value delta A of current difference
iAbsolute value delta A with an adjacent last moment difference
I-1Absolute value for two adjacent differences of participate in judging compares with the minimum threshold value of setting respectively, if all less than this minimum threshold value, then carries out stopping alarm; If have at least one to be not less than this minimum threshold value, execution in step (2) then.
The sequential sampling rule of acceleration signal is: according to setting the sampling period uniform sampling, the span of sampling period t is: 0.1T≤t≤6T and
And if
The initial moment t of time sampling
0With respective stroke zero crossing t constantly in the middle of the acceleration signal in the cycle
A0Should satisfy
Wherein T is the stroke cycle of sucker rod when normally moving, and N is a positive integer, and J is a positive odd number; Generally get in order to reach preferably effect
Adopt in the present embodiment
The judgement removal method of noise signal is that software approach is realized; The maximum sum minimum value of the acceleration that the acceleration information that collects is passed through with the permission of setting compares; Then being the normal acceleration signal if fall into this interval, then is noise signal if do not fall into this interval.
The design formulas of minimum threshold value is:
D＝γ*|A
MAX-A
MIN|
Wherein D is minimum threshold value;
γ is the weights coefficient, and the span of γ is 0.01≤γ≤0.1, γ in the present embodiment=0.05;
A
MAXBe the maximum acceleration value in the upper and lower its stroke of oil pumping machine oil pumping bar;
A
MINBe the minimum acceleration value in the upper and lower its stroke of oil pumping machine oil pumping bar;
A
MAXObtaining value method do, when oil pumper normally moves, sucker rod K complete stroke of statistics maximum value in each cycle in the cycle, and make average and handle; A
MINObtaining value method do, when oil pumper normally moves, sucker rod K complete stroke of statistics minimum value in each cycle in the cycle, and make average and handle; The value of K is 10.
As shown in Figure 2, the absolute value delta A of current difference in the described method step of present embodiment (4)
i=| A
i-A
I-1|, the absolute value delta A of an adjacent last moment difference
I-1=| A
I-1-A
I-2|, by that analogy, Δ A
I-2=| A
I-2-A
I-3|, Δ A
I-3=| A
I-3-A
I-4|.
As shown in Figure 4, in the described method step of present embodiment (5), the absolute value of the difference that current judgement is used is Δ A
iWith Δ A
I-1, judged that the absolute value of used difference was Δ A last time
I-1With Δ A
I-2, by that analogy, the absolute value of last time judging used difference is Δ A
I-2With Δ A
I-3
For fear of the influence of interfering signal, to judge sucker rod accurately and whether stop action, the method that present embodiment adopts is for after the stopping alarm signal occurring; Confirm with the absolute value of adjacent follow-up two differences and the stopping alarm that relatively carries out of minimum threshold value again,, otherwise confirm that alarm signal is an interfering signal if all then send the stopping alarm signal less than minimum threshold value; Continue monitoring; Can certainly adopt additive method, for example the continuous occurrence number of stopping alarm added up, allow the maximum continuous number of times to compare with setting; If then think the false alarm of shutting down less than setting value, outwards do not send alarm signal; If then think it really is stopping alarm, outwards send the stopping alarm signal greater than setting value.
The value of K is 10 in the foregoing description; Minimum threshold value is 0.05; Certainly the value of K also can be other numerical value; Stability according to the sucker rod motion can be done suitable adjustment, and the setting of minimum threshold can be carried out different set according to the operating mode difference of oil pumper, generally value between 0.01 to 0.1.
The judgement of noise signal is removed and is adopted software approach to realize in the foregoing description; Certainly the method for noise is removed in the judgement of the noise signal judgement of removing the method that also can adopt hardware to judge to remove noise and software and hardware combining, judges similar methods such as removal combines like software in the LPF of hardware circuit, hardware circuit LPF and the present embodiment.
Stopping alarm method in the foregoing description, can adopt on-the-spot sound and light alarm, utilize wireless communication technology to monitoring station report to the police or short message mode to main leader and person in charge similarly alarm method such as report to the police.
Embodiment two
Be with the difference of embodiment one: the computational methods of the absolute value of difference do in based on the step (4) of the real-time alarming method by monitoring shutdown of pumping machine of acceleration transducer; Acceleration information to the institute collection point carries out interval difference calculating successively; Obtain the absolute value of this corresponding difference; As shown in Figure 3, the absolute value delta A of current difference
i=| A
i-A
I-2|, the absolute value delta A of an adjacent last moment difference
I-1=| A
I-1-A
I-3|, by that analogy, Δ A
I-2=| A
I-2-A
I-4|, Δ A
I-3=| A
I-3-A
I-5|.Other part is all identical with embodiment one.
Acceleration information to the institute collection point carries out interval difference calculating successively; Situation effect to the sampling period is less is more excellent; Both guaranteed the real-time of monitoring, and can obtain apparent in view acceleration change value again, improved the accuracy of reporting to the police based on the monitoring shutdown of pumping machine of acceleration transducer.
Embodiment three
Be with the difference of embodiment one: in based on the step (5) of the real-time alarming method by monitoring shutdown of pumping machine of acceleration transducer, the absolute value of the difference of acceleration is adopted the method judged of dividing into groups; As shown in Figure 5, the absolute value of the difference that current judgement is used is Δ A
iWith Δ A
I-1, judged that the absolute value of used difference was Δ A last time
I-2With Δ A
I-3, by that analogy, the absolute value of last time judging used difference is Δ A
I-4With Δ A
I-5Other part is all identical with embodiment one.
Because the data source that each judgement is adopted is all inequality, increased the accuracy of judging.
Embodiment four
Be with the difference of embodiment one: whether the absolute value of adjacent three differences that in the step (5) based on the real-time alarming method by monitoring shutdown of pumping machine of acceleration transducer, will calculate compares with the minimum threshold value of setting respectively, quit work to judge the oil pumping machine oil pumping bar.As shown in Figure 6, the absolute value of the difference that current judgement is used is Δ A
i, Δ A
I-1With Δ A
I-2, judged that the absolute value of used difference was Δ A last time
I-1, Δ A
I-2With Δ A
I-3, by that analogy, the absolute value of last time judging used difference is Δ A
I-2, Δ A
I-3With Δ A
I-4Other part is all identical with embodiment one.
Utilize the absolute value of adjacent three differences to participate in judging, lost certain real-time, but but improved the accuracy of judging and stablized qualitative.
Claims (8)
1. real-time alarming method by monitoring shutdown of pumping machine based on acceleration transducer, it is characterized in that: this method may further comprise the steps:
(1) set acceleration signal sampling period of oil pumper beam hanger, and acceleration signal is carried out uniform sampling, the span of sampling period t is: 0.1T≤t≤6T and
And if
The initial moment t of time sampling
0With respective stroke zero crossing t constantly in the middle of the acceleration signal in the cycle
A0Should satisfy
Wherein T is the stroke cycle of sucker rod when normally moving, and N is a positive integer, and J is a positive odd number;
(2) acceleration signal of being gathered is carried out the A/D conversion, obtain the relevant acceleration data;
(3) at least 3 acceleration informations of being gathered are carried out difference in order and calculate, and take absolute value;
(4) absolute value with the difference that calculates compares with the minimum threshold value of setting respectively, if all less than this minimum threshold value, then carries out stopping alarm; If have at least one to be not less than this minimum threshold value, execution in step (2) then.
2. the real-time alarming method by monitoring shutdown of pumping machine based on acceleration transducer as claimed in claim 1; It is characterized in that: set the sampling period; And acceleration signal carried out uniform sampling, the span of cycle in sampling period t is:
wherein T is the stroke cycle of sucker rod when normally moving.
3. the real-time alarming method by monitoring shutdown of pumping machine based on acceleration transducer as claimed in claim 2 is characterized in that: the design formulas of described minimum threshold value is D=γ * | A
MAX-A
MIN|, wherein D is minimum threshold value, γ is the weights coefficient, A
MAXBe the maximum acceleration value in the upper and lower its stroke of oil pumping machine oil pumping bar, A
MINBe the minimum acceleration value in the upper and lower its stroke of oil pumping machine oil pumping bar.
4. the real-time alarming method by monitoring shutdown of pumping machine based on acceleration transducer as claimed in claim 3 is characterized in that: the span of described weights coefficient gamma is 0.01≤γ≤0.1.
5. the real-time alarming method by monitoring shutdown of pumping machine based on acceleration transducer as claimed in claim 4 is characterized in that: the absolute value of described difference, and with the acceleration information A of each adjacent in order collection point
i, A
I-1, A
I-2A
I-NCalculate for foundation, the absolute value that obtains difference does
Δ A
i=| A
i-A
I-1|, Δ A
I-1=| A
I-1-A
I-2|, Δ A
I-2=| A
I-2-A
I-3| ... Δ A
I-N+1=| A
I-N+1-A
I-N|, wherein, i is the sequence number of current collection point, N is a natural number.
6. the real-time alarming method by monitoring shutdown of pumping machine based on acceleration transducer as claimed in claim 5 is characterized in that: if the absolute value of adjacent two differences then carries out stopping alarm all less than minimum threshold value.
7. the real-time alarming method by monitoring shutdown of pumping machine based on acceleration transducer as claimed in claim 5 is characterized in that: if the absolute value of adjacent three differences then carries out stopping alarm all less than minimum threshold value.
8. like claim 6 or 7 described real-time alarming method by monitoring shutdown of pumping machine based on acceleration transducer; It is characterized in that: after the stopping alarm signal occurring; Confirm with the absolute value of adjacent follow-up two differences and the stopping alarm that relatively carries out of minimum threshold value again; If all then send the stopping alarm signal, otherwise confirm that alarm signal is an interfering signal, continue monitoring less than minimum threshold value.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009100661588A CN101660401B (en) | 2009-09-15 | 2009-09-15 | Real-time alarming method by monitoring shutdown of pumping machine based on acceleration sensor |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009100661588A CN101660401B (en) | 2009-09-15 | 2009-09-15 | Real-time alarming method by monitoring shutdown of pumping machine based on acceleration sensor |
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| CN101660401A CN101660401A (en) | 2010-03-03 |
| CN101660401B true CN101660401B (en) | 2012-11-28 |
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| CN2009100661588A Active CN101660401B (en) | 2009-09-15 | 2009-09-15 | Real-time alarming method by monitoring shutdown of pumping machine based on acceleration sensor |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106197759B (en) * | 2016-07-22 | 2019-07-02 | 蚌埠大洋传感系统工程有限公司 | A kind of temperature sensor control system |
| CN106679627B (en) * | 2016-12-25 | 2019-12-03 | 杭州博烁晟斐智能科技有限公司 | A kind of communication iron tower verticality Problem judgment method and system based on Internet of Things |
| CN108663995B (en) * | 2017-03-30 | 2020-11-06 | 郑州大学 | Method and device for detecting abnormal trend of industrial process variable |
| CN112377153B (en) * | 2020-10-29 | 2021-11-30 | 中国科学院沈阳自动化研究所 | Method for acquiring stroke and stroke frequency of beam-pumping unit based on acceleration sensor |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4481503A (en) * | 1982-07-29 | 1984-11-06 | Kerr-Mcgee Corporation | Production monitoring system |
| CN200946494Y (en) * | 2006-09-08 | 2007-09-12 | 大庆油田有限责任公司 | Integral monitor system for safety of pumping unit |
| CN201226175Y (en) * | 2008-05-30 | 2009-04-22 | 中海阳(北京)新能源电力工程有限公司 | Automatic alarm for fault |
-
2009
- 2009-09-15 CN CN2009100661588A patent/CN101660401B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4481503A (en) * | 1982-07-29 | 1984-11-06 | Kerr-Mcgee Corporation | Production monitoring system |
| CN200946494Y (en) * | 2006-09-08 | 2007-09-12 | 大庆油田有限责任公司 | Integral monitor system for safety of pumping unit |
| CN201226175Y (en) * | 2008-05-30 | 2009-04-22 | 中海阳(北京)新能源电力工程有限公司 | Automatic alarm for fault |
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Denomination of invention: Real-time alarming method by monitoring shutdown of pumping machine based on acceleration sensor Effective date of registration: 20190530 Granted publication date: 20121128 Pledgee: Luoyang Rural Commercial Bank Co., Ltd. Science and Technology Branch of Free Trade Zone Pledgor: Luoyang Ganhe Instrument Co.,Ltd. Registration number: 2019990000490 |
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Date of cancellation: 20200814 Granted publication date: 20121128 Pledgee: Luoyang Rural Commercial Bank Co.,Ltd. Science and Technology Branch of Free Trade Zone Pledgor: LUOYANG QIANHE INSTRUMENT Co.,Ltd. Registration number: 2019990000490 |
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