CN107631828A - Double pressure transmitter breakdown judges and switching method - Google Patents
Double pressure transmitter breakdown judges and switching method Download PDFInfo
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- CN107631828A CN107631828A CN201710821317.5A CN201710821317A CN107631828A CN 107631828 A CN107631828 A CN 107631828A CN 201710821317 A CN201710821317 A CN 201710821317A CN 107631828 A CN107631828 A CN 107631828A
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Abstract
The invention discloses a kind of double pressure transmitter breakdown judges and switching method, using double pressure transmitters, and switched in time when breaking down.The present invention can introduce another pressure transmitter when a pressure transmitter produces failure and synchronize data acquisition; it is environmental abnormality or pressure transmitter failure so as to accurately judge; still keep former pressure transmitter to work when environmental abnormality and send warning message to server; powered off in time when pressure transmitter failure and keep another pressure transmitter to work on, so as to maintain the uninterrupted sampling of pressure transmitter correct data as much as possible.
Description
Technical field
The invention belongs to industry control Element Technology field, and in particular to the breakdown judge and switching method of double pressure transmitters.
Background technology
Pressure transmitter is a kind of to convert pressure into pneumatic signal or electromotive signal is controlled equipment with teletransmission.It
The physical pressure parameters such as gas that load cell is experienced, liquid can be transformed into the electric signal of standard（Such as 4 ~
20mADC etc.）, measured, indicated and procedure regulation with supplying the secondary meters such as indicator alarm, recorder, adjuster.Pressure
Power transmitter is a kind of transmitter commonly used in industrial practice, is widely used in various industrial automatic control environment.
In use it was found that pressure transmitter has the possibility to break down, due to being usually periodic detection, even in
It can be found that pressure transmitter failure, can not also change pressure transmitter in time during detection, shortage of data or fault data are caused
Continuous collecting, system is integrally controlled and had a negative impact.
The content of the invention
To solve the above problems, the invention discloses a kind of double pressure transmitter breakdown judges and switching method, using double
Pressure transmitter, and switched in time when breaking down.
In order to achieve the above object, the present invention provides following technical scheme：
Double pressure transmitter breakdown judges and switching method, comprise the following steps：
Step 1, two pressure transmitters are set in same position, two pressure transmitters form data with processor respectively and connected
Connecing, processor gathers the data of two pressure transmitter output and is capable of the current supply circuit break-make of control pressure transmitter respectively,
Processor gathers pressure sensor data in pressure transmitter simultaneously；
Step 2, a processor control wherein pressure transmitter current supply circuit energization normal work, and make another pressure transmitter
Current supply circuit powers off；
Step 3, when processor collects the pressure transmitter output data to work or the generation of pressure sensor output data
When abnormal, processor controls other pressure transmitter current supply circuit to be powered and makes its work, and gathers the pressure transmitter and its
The data of pressure sensor output simultaneously make the following judgment：When the data that the pressure transmitter or its pressure sensor export are same
Extremely, when and numerical value and the pressure transmitter numerical value difference of normal work in step 2 are less than certain limit, then judge that environment is different
Often, and to server prompting warning message is sent；When the data that the pressure transmitter or its pressure sensor export do not occur it is different
Chang Shi, then cutting for pressure transmitter is realized in the pressure transmitter current supply circuit power-off of normal work in processor rate-determining steps two
Change.
Further, judge that the process of output abnormality comprises the following steps in the step 3：
Step 1, the collection of basic data is carried out to pressure transmitter, pressure transmitter is applied to carry out data in different medium
Collection, change the pressure that pressure transmitter surveys medium, several pressure measurement points are taken in range ability, in each pressure measxurement
Point is tested several times, and takes the average, maximum and minimum value of each test value；Calculate between each test value maximum and average
Difference fluctuate the upper limit as pick-up, difference between each test value minimum value and average is as pick-up fluctuation lower limit；Adopt simultaneously
Collect the signal of pressure sensor itself output, take average, maximum and the minimum value of each pressure sensor output valve, calculate each survey
Difference between examination value maximum and average fluctuates the upper limit, the difference between each test value minimum value and average as pressure sensing
Lower limit is fluctuated as pressure sensing；
Step 2, regular continuous several times collection pressure transmitter output data and the data of pressure sensor output, calculate pressure and become
Device output average and maximin are sent, when pick-up maximum is less than minimum pick-up beyond maximum pick-up threshold value or pick-up minimum value
During threshold value, gathered again once every for a period of time, when pick-up maximum exceeds maximum pick-up threshold value or change in second of gathered data
When sending the minimum value to be less than minimum pick-up threshold value, pressure transmitter failure, and synchronous calculation pressure sensor are prompted in server end
Average and maximin are exported, judges that pressure sensor maximum senses beyond maximum sensing threshold or minimum value less than minimum
During threshold value, pressure sensor failure and environmental abnormality information are prompted in server end, when pressure sensor maximum is not less than most
Big sensing threshold and when minimum value is not below minimum sensing threshold, in server end cue circuit plate likelihood of failure.
Further, the calculation of maximum pick-up threshold value is in the step 2：Obtained in current average+step 1
Fluctuate upper limit * k；The calculation of minimum pick-up threshold value is：The fluctuation lower limit * j obtained in current average-step 1；Maximum passes
Sense threshold value calculation be：The sensing fluctuation upper limit * m obtained in current average+step 1；The calculating side of minimum sensing threshold
Formula is：The sensing lower limit * n obtained in current average-step 1.
Compared with prior art, the invention has the advantages that and beneficial effect：
Double pressure transmitter breakdown judges and switching method provided by the invention, can be when a pressure transmitter produces failure
Introduce another pressure transmitter and synchronize data acquisition, so as to accurately judge it is environmental abnormality or pressure transmitter event
Barrier, still keep former pressure transmitter to work when environmental abnormality and send warning message to server, when pressure transmitter event
Powered off in time during barrier and keep another pressure transmitter to work on, so as to maintain pressure transmitter correct as much as possible
The uninterrupted sampling of data.
Embodiment
Technical scheme provided by the invention is described in detail below with reference to specific embodiment, it should be understood that following specific
Embodiment is only illustrative of the invention and is not intended to limit the scope of the invention.
Step 1, two pressure transmitters, the two pressure transmitters difference are set in same pressure inverting collection position
Data are formed with processor to be connected.Processor gathers the data of two pressure transmitter output and being capable of control pressure pick-up respectively
The current supply circuit break-make of device, it is generally the case that the data that the pressure sensor in pressure transmitter measures pass through wiring board（Conversion
Circuit）Outwards export afterwards, processor not only needs collection pressure transmitter externally to be exported after circuit board is changed in the present invention
Data, it is also necessary to gather pressure sensor itself output data.
Step 2, a processor control wherein pressure transmitter current supply circuit energization normal work, and make another pressure become
Device current supply circuit is sent to power off.
Step 3, when processor collects the pressure transmitter output data or pressure sensor output data to work
When generation is abnormal, processor controls other pressure transmitter current supply circuit to be powered and makes its work, and gathers the pressure transmitter
With its pressure sensor output data and make the following judgment：When the data that the pressure transmitter or its pressure sensor export
It is same abnormal, and numerical value and the pressure transmitter numerical value difference of normal work in step 2 are less than certain limit（The scope is to examine
The numerical value considered between each pressure transmitter has error and set, and the scope should be pre-set）When, then judge that environment is different
Often, and to server prompting warning message is sent；When the data that the pressure transmitter or its pressure sensor export do not occur it is different
Chang Shi, then cutting for pressure transmitter is realized in the pressure transmitter current supply circuit power-off of normal work in processor rate-determining steps two
Change.
The abnormal process of above-mentioned judgement comprises the following steps：
Step 1, the collection of basic data is carried out to pressure transmitter first, pressure transmitter is applied to different medium（Should be extremely
Include three kinds of liquid, gas and steam species less）Middle carry out data acquisition, and take the collection under different application medium equal respectively
Value, maximum and minimum value；Change the pressure that pressure transmitter surveys medium, 5 pressure measxurements are at least taken in range ability
Point, tested several times in each pressure measurement point, and take the average, maximum and minimum value of each test value.Calculate each test value
Difference between maximum and average is as the fluctuation upper limit, and the difference between each test value minimum value and average is as under fluctuation
Limit.As an improvement, using the average and the fluctuation upper limit of each pressure spot, pick-up upper limit matched curve is obtained.Utilize each pressure
The average and fluctuation lower limit of point, obtain pick-up lower limit matched curve.
In this step, it also should individually gather the signal of pressure sensor itself output, i.e., it is different in variety classes medium
In pressure environment, under at least five pressure measurement point, average, maximum and the minimum value of each pressure sensor output valve are taken.Calculate
Difference between each test value maximum and average fluctuates the upper limit as pressure sensing, between each test value minimum value and average
Difference fluctuates lower limit as pressure sensing.And pressure biography can be obtained further using each pressure sensing average and the fluctuation upper limit
Feel upper limit matched curve.Using each pressure sensing average and fluctuation lower limit, pressure sensing lower limit matched curve is obtained.
Step 2, periodically（Such as every 5 minutes once）Continuous several times gather pressure transmitter output data and pressure sensor
The data of output, calculate pressure transmitter output average and maximin, when pick-up maximum beyond maximum pick-up threshold value or
When pick-up minimum value is less than minimum pick-up threshold value, gathered again once every 5 minutes, when pick-up maximum surpasses in second of gathered data
When going out maximum pick-up threshold value or pick-up minimum value and being less than minimum pick-up threshold value, pressure transmitter failure is prompted in server end, and
Synchronous calculation pressure sensor output average and maximin, judge pressure sensor maximum beyond maximum sensing threshold or
When minimum value is less than minimum sensing threshold, pressure sensor failure and environmental abnormality information are prompted in server end.When pressure passes
When sensor maximum is not below minimum sensing threshold not less than maximum sensing threshold and minimum value, in server end cue circuit plate
Likelihood of failure.
The calculation of above-mentioned maximum pick-up threshold value is：The fluctuation upper limit * k obtained in current average+step 1, here
K values value as needed, between generally 1~2.Average can also be substituted into the pick-up upper limit matched curve that step 1 obtains
In, obtain maximum pick-up threshold value.Similarly, the calculation of minimum pick-up threshold value is：The fluctuation obtained in current average-step 1
Lower limit * j, j values value as needed here, between generally 1~2.Average can also be substituted into the pick-up that step 1 obtains
In lower limit matched curve, minimum pick-up threshold value is obtained.
The calculation of above-mentioned maximum sensing threshold is：The sensing fluctuation upper limit * m obtained in current average+step 1, this
In m values value as needed, between generally 1~2.Average can also be substituted into the sensing upper limit that step 1 obtains and be fitted song
In line, maximum sensing threshold is obtained.Similarly, the calculation of minimum sensing threshold is：The biography obtained in current average-step 1
Feel lower limit * n, n values value as needed here, between generally 1~2.Average can also be substituted into the biography that step 1 obtains
Feel in lower limit matched curve, obtain minimum sensing threshold.
As the improvement of step 2, pressure sensor output data also should be every the long period（Such as weekly）It is independent
Collection judgement, when sensing maximum is less than minimum sensing threshold beyond maximum sensing threshold or sensing minimum value, every 5 minutes again
Collection once, senses when sensing maximum in second of gathered data beyond maximum sensing threshold or sensing minimum value less than minimum
During threshold value, pressure sensor failure is prompted in server end.
Technological means disclosed in the present invention program is not limited only to the technological means disclosed in above-mentioned embodiment, in addition to
Formed technical scheme is combined by above technical characteristic.It should be pointed out that for those skilled in the art
For, under the premise without departing from the principles of the invention, some improvements and modifications can also be made, these improvements and modifications are also considered as
Protection scope of the present invention.
Claims (3)
1. pair pressure transmitter breakdown judge and switching method, it is characterised in that comprise the following steps：
Step 1, two pressure transmitters are set in same position, two pressure transmitters form data with processor respectively and connected
Connecing, processor gathers the data of two pressure transmitter output and is capable of the current supply circuit break-make of control pressure transmitter respectively,
Processor gathers pressure sensor data in pressure transmitter simultaneously；
Step 2, a processor control wherein pressure transmitter current supply circuit energization normal work, and make another pressure transmitter
Current supply circuit powers off；
Step 3, when processor collects the pressure transmitter output data to work or the generation of pressure sensor output data
When abnormal, processor controls other pressure transmitter current supply circuit to be powered and makes its work, and gathers the pressure transmitter and its
The data of pressure sensor output simultaneously make the following judgment：When the data that the pressure transmitter or its pressure sensor export are same
Extremely, when and numerical value and the pressure transmitter numerical value difference of normal work in step 2 are less than certain limit, then judge that environment is different
Often, and to server prompting warning message is sent；When the data that the pressure transmitter or its pressure sensor export do not occur it is different
Chang Shi, then cutting for pressure transmitter is realized in the pressure transmitter current supply circuit power-off of normal work in processor rate-determining steps two
Change.
2. double pressure transmitter breakdown judges according to claim 1 and switching method, it is characterised in that the step 3
The middle process for judging output abnormality comprises the following steps：
Step 1, the collection of basic data is carried out to pressure transmitter, pressure transmitter is applied to carry out data in different medium
Collection, change the pressure that pressure transmitter surveys medium, several pressure measurement points are taken in range ability, in each pressure measxurement
Point is tested several times, and takes the average, maximum and minimum value of each test value；Calculate between each test value maximum and average
Difference fluctuate the upper limit as pick-up, difference between each test value minimum value and average is as pick-up fluctuation lower limit；Adopt simultaneously
Collect the signal of pressure sensor itself output, take average, maximum and the minimum value of each pressure sensor output valve, calculate each survey
Difference between examination value maximum and average fluctuates the upper limit, the difference between each test value minimum value and average as pressure sensing
Lower limit is fluctuated as pressure sensing；
Step 2, regular continuous several times collection pressure transmitter output data and the data of pressure sensor output, calculate pressure and become
Device output average and maximin are sent, when pick-up maximum is less than minimum pick-up beyond maximum pick-up threshold value or pick-up minimum value
During threshold value, gathered again once every for a period of time, when pick-up maximum exceeds maximum pick-up threshold value or change in second of gathered data
When sending the minimum value to be less than minimum pick-up threshold value, pressure transmitter failure, and synchronous calculation pressure sensor are prompted in server end
Average and maximin are exported, judges that pressure sensor maximum senses beyond maximum sensing threshold or minimum value less than minimum
During threshold value, pressure sensor failure and environmental abnormality information are prompted in server end, when pressure sensor maximum is not less than most
Big sensing threshold and when minimum value is not below minimum sensing threshold, in server end cue circuit plate likelihood of failure.
3. double pressure transmitter breakdown judges according to claim 2 and switching method, it is characterised in that the step 2
The calculation of middle maximum pick-up threshold value is：The fluctuation upper limit * k obtained in current average+step 1；The meter of minimum pick-up threshold value
Calculation mode is：The fluctuation lower limit * j obtained in current average-step 1；The calculation of maximum sensing threshold is：Current average+
The sensing fluctuation upper limit * m obtained in step 1；The calculation of minimum sensing threshold is：Obtained in current average-step 1
Sense lower limit * n.
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| CN201710821317.5A CN107631828A (en) | 2017-09-13 | 2017-09-13 | Double pressure transmitter breakdown judges and switching method |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109489900A (en) * | 2018-11-08 | 2019-03-19 | 上海华力微电子有限公司 | Implanter vacuum meter damages control device and the method for answering a pager's call of answering a pager's call |
| CN110160845A (en) * | 2019-04-29 | 2019-08-23 | 湖南三德科技股份有限公司 | Dispatching method, storage medium and the sample-preparing system of coal robot sample-preparing system |
| CN110243539A (en) * | 2019-07-26 | 2019-09-17 | 阜阳华润电力有限公司 | A kind of online pressure ratio is to detection device |
| CN114441093A (en) * | 2021-12-31 | 2022-05-06 | 浙江天信仪表科技有限公司 | Fault diagnosis method, device and equipment for pressure transmitter of water supply equipment |
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| CN102322890A (en) * | 2011-05-30 | 2012-01-18 | 三一重工股份有限公司 | A kind of transmitter fault diagnosis circuit and method |
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| CN105699009A (en) * | 2014-11-25 | 2016-06-22 | 中国科学院沈阳自动化研究所 | Difference value comparison technique-based capacitive pressure sensor fault diagnosis system and method |
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| CN102322890A (en) * | 2011-05-30 | 2012-01-18 | 三一重工股份有限公司 | A kind of transmitter fault diagnosis circuit and method |
| CN104038333A (en) * | 2013-03-07 | 2014-09-10 | 森萨塔科技公司 | Time synchronized redundant sensors |
| CN104678912A (en) * | 2013-11-28 | 2015-06-03 | 梅特勒-托利多(常州)精密仪器有限公司 | Measurement system consisting of a plurality of sensors |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109489900A (en) * | 2018-11-08 | 2019-03-19 | 上海华力微电子有限公司 | Implanter vacuum meter damages control device and the method for answering a pager's call of answering a pager's call |
| CN110160845A (en) * | 2019-04-29 | 2019-08-23 | 湖南三德科技股份有限公司 | Dispatching method, storage medium and the sample-preparing system of coal robot sample-preparing system |
| CN110160845B (en) * | 2019-04-29 | 2022-06-14 | 湖南三德科技股份有限公司 | Scheduling method of coal robot sample preparation system, storage medium and sample preparation system |
| CN110243539A (en) * | 2019-07-26 | 2019-09-17 | 阜阳华润电力有限公司 | A kind of online pressure ratio is to detection device |
| CN110243539B (en) * | 2019-07-26 | 2022-03-11 | 阜阳华润电力有限公司 | Online pressure ratio is to detection device |
| CN114441093A (en) * | 2021-12-31 | 2022-05-06 | 浙江天信仪表科技有限公司 | Fault diagnosis method, device and equipment for pressure transmitter of water supply equipment |
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Application publication date: 20180126 |