CN205593617U - LNG adds mechanism of qi metrological verification standard device with show flow data discernment - Google Patents
LNG adds mechanism of qi metrological verification standard device with show flow data discernment Download PDFInfo
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- CN205593617U CN205593617U CN201521099084.5U CN201521099084U CN205593617U CN 205593617 U CN205593617 U CN 205593617U CN 201521099084 U CN201521099084 U CN 201521099084U CN 205593617 U CN205593617 U CN 205593617U
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Abstract
The utility model discloses a LNG who shows flow data discernment adds mechanism of qi metrological verification device, at present standard measuring equipment, high resolution industry digital camera and on being equipped with the notebook computer of synchronous data acquisition software, has increased by one and has shown flow data identification module, and this module parallel data bus is connected with high resolution industry digital camera, the demonstration flow data picture that high resolution industry digital camera acquireed sends through this parallel data bus and shows that flow data identification module carries out image recognition, and the demonstration flow data who recognises sends the notebook computer for being equipped with synchronous data acquisition software. The demonstration flow data picture that like this can be fast obtain high resolution industry digital camera sends for showing that flow data identification module carries out image recognition, recognise that to show flow data just very little, and the time ratio of cost shortens greatly, can the fully provided adds the on -site proving real -time requirement of mechanism of qi to LNG.
Description
Technical field
This utility model belongs to measurement verification standard device technical field, more specifically, relates to a kind of tool
There is liquefied natural gas (LNG) the filling machine metering and calibrating device of display data on flows identification.
Background technology
LNG filling machine measurement verification standard set-up is a proving flowmeter, for examining and determine tested effusion meter
Amount equipment i.e. LNG filling machine, to determine whether its technical specification meets the requirements.
On 08 10th, 2011 Granted publications, notification number be CN201925716U, entitled " liquid
Change natural gas aerating machine measurement verification standard set-up " Chinese utility model disclose a kind of by liquid feeding pipeline,
Return line and the measurement verification standard set-up of blowdown piping composition, wherein, liquid feeding pipeline is used as to add with LNG
The liquid feeding interface of liquid feeding rifle head connection of mechanism of qi, liquid phase quality effusion meter, the first check-valves, liquid feeding vacuum gold
Belong to flexible pipe and be sequentially connected with as the liquid feeding rifle head being connected with the liquid feeding interface of vehicle-mounted LNG gas bomb, and the
The outlet of one check-valves connects the import of the second check-valves, and the outlet connection safety valve of the second check-valves is followed by putting
Blank pipe；The air gun head that returns that return line is used as to be connected with the return-air interface of vehicle-mounted LNG gas bomb is sequentially connected with back
Gas vacuum metal flexible pipe, gas phase mass flow meter, the 4th check-valves and be used as and the return-air of LNG filling machine
The return-air interface that rifle head connects.
Additionally, as it is shown in figure 1, this gauge check standard set-up also has data collecting system, including:
Industry digital camera: the display integrated flux data being used as to add LNG filling machine tolerance are taken pictures,
Industry its signal output part of digital camera is connected with notebook computer, special soft by install on notebook computer
Part controls taking pictures of camera.
Notebook computer: receive the output LNG filling machine display data on flows picture signal of industry digital camera,
Read data on flows according to the camera picture that front and back collects for twice, and process, to judge LNG aerating
Machine only add tolerance.The special-purpose software installed on notebook computer starts the inspection of synchronous acquisition LNG filling machine scene
Determine device gas phase flow rate meter and liquid phase stream gauge cumulative flow value, gas phase flow rate meter and liquid phase meter readings
Difference is considered as LNG filling machine device for on-site calibration net flow reading.System is processed again by notebook computer data
System processes data and draws mean error and repeatability, it is determined that the measuring accuracy of LNG filling machine is the most qualified.
LNG filling machine measurement verification standard set-up uses dynamic method and static method calibrating mode, it is possible to use high
LNG filling machine display integrated flux numerical value is taken pictures by resolution industry digital camera.Meanwhile, notebook
The special-purpose software installed on computer starts synchronous acquisition LNG filling machine device for on-site calibration gas phase flow rate meter and liquid
Multi-phase flowmeter cumulative flow value carries out data process so that the data of LNG filling machine measurement verification standard set-up
Acquisition system obtains LNG filling machine and LNG filling machine measurement verification standard set-up under the conditions of same operating
Digital signal and image information carry out data process, and these technical measures ensure that LNG filling machine measurement verification
The calibrating of standard set-up and calibration accuracy.
Therefore, when the LNG filling machine measurement verification standard set-up of prior art carries out on-site proving, need to use
High resolution industrial camera shoots tested LNG filling machine display panel digital, records aerating accumulated number.Figure
LNG filling machine measurement verification standard set-up shown in 1 passes through high resolution industrial digital camera, solves
The acquisition problem of LNG filling machine display data on flows；Meanwhile, LNG aerating is solved by notebook computer
The acquisition of machine display data on flows and LNG filling machine measurement verification standard set-up metered flow data is Tong Bu asked
Topic.But, owing to needs accurately identify LNG filling machine display data on flows, high resolution industrial number phase
The display data on flows picture file that machine obtains is the biggest, is so changed by RS-485 bus, USB,
Carrying out image recognition on notebook computer again, obtain display data on flows, the time of cost is long, no
The requirement of real-time of on-site proving can be met.
At present, owing to the numerical character font of display data on flows is different, the LNG filling machine meter of prior art
Amount standard verification apparatus there is also the problem that can not accurately identify display data on flows picture, it is generally the case that
Current measurement verification still use take pictures according to fine definition industry digital camera, artificial reading is manually filled in
Mode carry out examine and determine data record, efficiency comparison is low.
Utility model content
The purpose of this utility model is to overcome the deficiencies in the prior art, it is provided that one has display data on flows
The LNG filling machine metering and calibrating device identified, to meet the requirement of real-time of on-site proving.
For achieving the above object, this utility model has the LNG filling machine metering inspection of display data on flows identification
Determine device, including:
By gas phase flow rate meter or/and the standard metering devices that constitutes of liquid phase stream gauge, with the liquid feeding of LNG filling machine
Rifle head connects, for measuring the liquefied natural gas of LNG filling machine output；
High resolution industrial digital camera, for the display data on flows on LNG filling machine is taken pictures,
Obtain display data on flows picture；
Equipped with the notebook computer of synchronous data collection software, it is used for providing synchronous data collection signal, and leads to
Cross RS-485 bus and be sent to standard metering devices, high resolution industrial digital camera, synchronize to obtain standard meter
The data on flows of amount equipment and the display data on flows on LNG filling machine is taken pictures；
It is characterized in that, also include:
One display data on flows identification module, by parallel data bus line with high resolution industrial digital camera even
Connect；
The display data on flows picture that high resolution industrial digital camera obtains is sent by this parallel data bus line
Carrying out image recognition to display data on flows identification module, the display data on flows identified is sent to equipped with same
The notebook computer of step data acquisition software；
Equipped with the notebook computer of the synchronous data collection software standard metering devices flow to two subsynchronous acquisitions
Data and display data on flows carry out mathematic interpolation, respectively simultaneously by the difference of standard metering devices data on flows
It is worth the net flow reading as standard, shows the data on flows difference net flow reading as LNG filling machine,
The two does difference and obtains error amount, for judging that the measuring accuracy of LNG filling machine is the most qualified.
As further improving, described display data on flows identification module is built in high resolution industrial number
In code-phase machine.
As further improving, described display data on flows identification module includes:
One image processing module, for carrying out gradation conversion and smoothing to display data on flows picture to be identified
Process, obtain showing data on flows gray scale picture；
One region divides module, for display data on flows gray scale picture carries out rim detection and corrosion roguing；
One digital segmentation module, for the display data on flows gray scale picture after rim detection and corrosion roguing
Carry out digital segmentation, construct multiple respective character region；
One identification and matching module, carries out match cognization by each respective character region with the numeral in each digital template,
What matching degree was the highest is the numeral identified, thus obtains showing data on flows, wherein, digital template root
Sample according to the mathematical model on LNG filling machine indicating template and build.
The purpose of this utility model is realized in.
This utility model has the LNG filling machine metering and calibrating device of display data on flows identification, at existing mark
Quasi-measuring equipment, high resolution industrial digital camera and the notebook computer equipped with synchronous data collection software
On, add a display data on flows identification module, this modular concurrent data/address bus and high resolution industrial
Digital camera connects；The display data on flows picture that high resolution industrial digital camera obtains is by being somebody's turn to do and line number
Being sent to show that data on flows identification module carries out image recognition according to bus, the display data on flows identified is sent out
Give the notebook computer equipped with synchronous data collection software.So use special display data on flows identification
Display data on flows picture is processed by module, meanwhile, and display data on flows identification module and high-resolution
Industry digital camera uses parallel data bus line to connect, so can be rapidly by high resolution industrial number phase
The display data on flows picture that machine obtains is sent to show that data on flows identification module carries out image recognition, identifies
Going out and show that data on flows is the least, display data on flows can be sent to equipped with synchronous data collection soon
The notebook computer of software, the time ratio of cost is greatly shortened, and can fully meet and show LNG filling machine
Field calibrating requirement of real-time.
Simultaneously as the pattern of each LNG filling machine display digit is not quite similar, this utility model is by right
Mathematical model on LNG filling machine display floater is sampled, and sets up digital template storehouse, so can be right
Numeral in each digital template carries out match cognization, improves the accuracy of identification, thus, improve calibrating
Efficiency.
Accompanying drawing explanation
Fig. 1 is LNG filling machine metering and calibrating device former in prior art with display data on flows identification
Reason block diagram；
Fig. 2 is that this utility model has the former of the LNG filling machine metering and calibrating device of display data on flows identification
Reason block diagram；
Fig. 3 is a kind of detailed description of the invention theory diagram of display data on flows identification module shown in Fig. 2.
Detailed description of the invention
Below in conjunction with the accompanying drawings detailed description of the invention of the present utility model is described, in order to the technology of this area
Personnel are more fully understood that this utility model.Requiring particular attention is that, in the following description, when
Know that when perhaps the detailed description of function and design can desalinate main contents of the present utility model, these are described in this
In will be left in the basket.
In the present embodiment, as in figure 2 it is shown, the LNG that this utility model has display data on flows identification adds
Mechanism of qi metering and calibrating device, including: by gas phase flow rate meter or/and the standard metering devices that constitutes of liquid phase stream gauge
1, high resolution industrial digital camera 2, equipped with synchronous data collection software notebook computer 3 and display
Data on flows identification module 4.Wherein, standard metering devices 1 is connected with the liquid feeding rifle head of LNG filling machine,
Liquefied natural gas for exporting LNG filling machine measures, equipped with the notes of synchronous data collection software
This computer 3 provides synchronous data collection signal, by UBS interface, turns RS-485 transducer through USB
It is sent in RS-485 bus, then, is sent to standard metering devices 1, high-resolution by RS-485 bus
Rate industry digital camera 2, synchronizes to obtain the data on flows of standard metering devices 1 and on LNG filling machine
Display data on flows take pictures.
Display data on flows identification module 4 is by parallel data bus line with high resolution industrial digital camera 2 even
Connecing, the display data on flows picture that high resolution industrial digital camera 2 obtains is sent out by this parallel data bus line
Delivering to show that data on flows identification module 4 carries out image recognition, the display data on flows identified is sent to
RS-485 bus, then, turns RS-485 transducer again to equipped with synchronous data collection software by USB
Notebook computer 3.
Equipped with the notebook computer 3 of the synchronous data collection software standard metering devices 1 to two subsynchronous acquisitions
Data on flows and display data on flows carry out mathematic interpolation, respectively simultaneously by standard metering devices 1 flow number
According to difference as the net flow reading of standard, display data on flows difference is as the net flow of LNG filling machine
Reading, the two does difference and obtains error amount, for judging that the measuring accuracy of LNG filling machine is the most qualified.
Fig. 3 is a kind of detailed description of the invention theory diagram of display data on flows identification module shown in Fig. 2.
In the present embodiment, as it is shown on figure 3, display data on flows identification module includes: image processing module
401, region divides module 402, digital segmentation module 403 and identification and matching module 404.
1, image processing module
1.1, gradation conversion
In image processing module 401, firstly for the display data on flows of high resolution industrial digital camera
Picture carries out gradation conversion and removes the impact on numeral identification of other colors, if image is near after gray scale converts
Seemingly spend height and then consider by sharpening, or local Gaussian filtering obtains satisfied gray scale picture.
1.2, smoothing processing
Gray scale picture after gradation conversion needs reworking due to bright change, can be according to the figure obtained
Sheet effect considers whether to remove this step, and concrete condition is depending on final recognition result.
2, region divides module
2.1, rim detection
Display data on flows gray scale image edge is detected.First display data on flows gray scale picture is entered
Row noise filtering, then obtains the edge of image by Roberts operator, Laplace operator or Gauss operator
Take turns wealthy, appeal three kinds of operators and can come according to the quality of actual photographed picture respectively as identifying operation method
Select suitable edge detection method.
2.2, corrosion roguing
Being optimized picture by erosion algorithm, obtaining large area has area of the pattern, goes the removal of impurity, reduces
Identify interference volume.
3, digital segmentation module
3.1, Character segmentation
Image binaryzation in zoning is obtained numeral essential information, is then passed through filtering impurity screening letter
Breath, obtains the image of significant digits feature, it is simple to carry out digital segmentation.
3.2, character normalization
Image progressive after processing is got rid of white point, obtains continuum, construct respective character region, for
The value of interval section is adjusted according to numerical monitor mode in actual photographed photo.
4, identification and matching
4.1, template base is set up
Carry out sampling and set up digital template storehouse according to the mathematical model on LNG filling machine display floater, due to
The pattern of each filling machine display digit is not quite similar, thus need by setting up different mathematical model storehouses so that
Identification and matching.
4.2, traversal coupling
The character boundary zooming in or out in template base by the digital normalization region being partitioned into, is then carried out
Match cognization, takes out, according to the result of coupling, the value that matching degree is the highest, and feeds back generation output numeral.
Although detailed description of the invention illustrative to this utility model is described above, in order to this technology
Field artisans understand that this utility model, it should be apparent that this utility model is not limited to specific embodiment party
The scope of formula, from the point of view of those skilled in the art, as long as various change is wanted in appended right
In seeking the spirit and scope of the present utility model limiting and determining, these changes are apparent from, all profits
With the innovation and creation of this utility model design all at the row of protection.
Claims (2)
1. there is a LNG filling machine metering and calibrating device for display data on flows identification, including:
By gas phase flow rate meter or/and the standard metering devices that constitutes of liquid phase stream gauge, it is connected with the liquid feeding rifle head of LNG filling machine, for the liquefied natural gas of LNG filling machine output is measured；
High resolution industrial digital camera, for taking pictures the display data on flows on LNG filling machine, obtains display data on flows picture；
Notebook computer equipped with synchronous data collection software, for providing synchronous data collection signal, and it is sent to standard metering devices, high resolution industrial digital camera by RS-485 bus, synchronize obtain the data on flows of standard metering devices and the display data on flows on LNG filling machine is taken pictures；
It is characterized in that, also include:
One display data on flows identification module, is connected with high resolution industrial digital camera by parallel data bus line；
The display data on flows picture that high resolution industrial digital camera obtains is sent to show that data on flows identification module carries out image recognition by this parallel data bus line, and the display data on flows identified is sent to the notebook computer equipped with synchronous data collection software；
Notebook computer equipped with synchronous data collection software carries out mathematic interpolation respectively to standard metering devices data on flows and the display data on flows of two subsynchronous acquisitions, simultaneously using the difference of standard metering devices data on flows as the net flow reading of standard, display data on flows difference is as the net flow reading of LNG filling machine, the two does difference and obtains error amount, for judging that the measuring accuracy of LNG filling machine is the most qualified.
The LNG filling machine metering and calibrating device with display data on flows identification the most according to claim 1, it is characterised in that described display data on flows identification module is built in high resolution industrial digital camera.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201521099084.5U CN205593617U (en) | 2015-12-24 | 2015-12-24 | LNG adds mechanism of qi metrological verification standard device with show flow data discernment |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201521099084.5U CN205593617U (en) | 2015-12-24 | 2015-12-24 | LNG adds mechanism of qi metrological verification standard device with show flow data discernment |
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| CN205593617U true CN205593617U (en) | 2016-09-21 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106641719A (en) * | 2017-02-08 | 2017-05-10 | 邢台中测仪器设备有限公司 | Liquefied natural gas dispenser calibrating device and method |
| CN107063401A (en) * | 2016-11-28 | 2017-08-18 | 北京瑞赛长城航空测控技术有限公司 | Liquefied natural gas aerating machine calibration method and system |
| CN112946232A (en) * | 2021-02-04 | 2021-06-11 | 成都秦川物联网科技股份有限公司 | Natural gas energy metering data acquisition method and system |
-
2015
- 2015-12-24 CN CN201521099084.5U patent/CN205593617U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107063401A (en) * | 2016-11-28 | 2017-08-18 | 北京瑞赛长城航空测控技术有限公司 | Liquefied natural gas aerating machine calibration method and system |
| CN106641719A (en) * | 2017-02-08 | 2017-05-10 | 邢台中测仪器设备有限公司 | Liquefied natural gas dispenser calibrating device and method |
| CN112946232A (en) * | 2021-02-04 | 2021-06-11 | 成都秦川物联网科技股份有限公司 | Natural gas energy metering data acquisition method and system |
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| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160921 Termination date: 20181224 |
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| CF01 | Termination of patent right due to non-payment of annual fee |