CN209264063U - A kind of novel intelligent fluid level measuring instrument based on machine vision - Google Patents
A kind of novel intelligent fluid level measuring instrument based on machine vision Download PDFInfo
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- CN209264063U CN209264063U CN201920064355.5U CN201920064355U CN209264063U CN 209264063 U CN209264063 U CN 209264063U CN 201920064355 U CN201920064355 U CN 201920064355U CN 209264063 U CN209264063 U CN 209264063U
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Abstract
The utility model discloses a kind of novel intelligent fluid level measuring instrument based on machine vision, including industrial level meter, CMOS camera module and pc client, the liquid level image of CMOS camera module acquisition industrial level meter, CMOS camera module is separately connected internet gateway and data server by local network, internet gateway connects Cloud Server, pc client accesses local network, CMOS camera module connects PLC, PLC connection DCS control system, the utility model solves the poor reliability of the physical techniques such as conventional ultrasonic wave measurement liquid level, precision is low, without visuality, the inherent shortcomings such as networking capability difference；Solve the huge complicated, inherent shortcomings such as real-time is poor, integrated level is low, installation difficulty is big, less economical, reliability is low of system using PC technology measurement liquid level；In addition, the utility model, using the system architecture design based on IP agreement, mode is consulted in configuration, management, the data storage and history for having overturned traditional liquid level measuring instrumentss, the completely new management for meeting IT feature and configuration mode joined.
Description
Technical field
The utility model relates to technical field of liquid level measurement, specially a kind of novel intelligent liquid level based on machine vision is surveyed
Measure instrument.
Background technique
The embedded microprocessor technology of high speed development provides basic guarantee for inexpensive, high-effect, high reliability；
The rapid development of advanced image processing techniques, artificial intelligence technology provides algorithm and survey for the software algorithm of high reliability
The technical guarantee of accuracy of measurement；The IP-based network architecture is quickly grown, and is provided the foundation condition for Internet of Things, and all things on earth interconnects
It comes up to us, introduces IT technology, provide basic guarantee and application conditions for the networking capability and extended capability of measuring instrumentss.
Liquid level is measured using the physical techniques such as conventional ultrasonic wave in the prior art, depends on import, it is at high cost, can tie up
Shield property is poor；Image processing techniques based on PC measures liquid level, is concentrated mainly in the project of some colleges and universities, and application surface is narrow, framework
It is huge and complicated, reliability is low, real-time is poor, integrated level is low, installation difficulty is big, less economical.It is difficult to be commercialized, carries out big
The business application of scale.
Summary of the invention
The purpose of this utility model is to provide a kind of novel intelligent fluid level measuring instrument based on machine vision, on solving
State the problem of proposing in background technique.
To achieve the above object, the utility model provides the following technical solutions: a kind of novel intelligent based on machine vision
Fluid level measuring instrument, including industrial level meter, CMOS camera module and pc client, the CMOS camera module acquire industrial liquid
The liquid level image of position meter, the CMOS camera module are separately connected internet gateway and data server by local network, institute
Internet gateway connection Cloud Server is stated, the pc client accesses local network, and the CMOS camera module connects PLC, institute
State PLC connection DCS control system.
Preferably, the CMOS camera module includes microprocessor, ROM memory, RAM memory, network controller, consolidates
State hard disk and imaging sensor, the microprocessor is separately connected, ROM memory, RAM memory, network controller, solid-state are hard
Disk and imaging sensor, the microprocessor are also connected with RS485 transceiver and 4-20mA analog interface, and the microprocessor is adopted
With RAM processor.
Preferably, the data server uses NVR or Network Personal Video Recorder.
Preferably, the industrial level meter be equipped with normal level line, highest liquid level warning line, minimum liquid level warning line,
Liquid pump starting/valve starts critical liquid level line and time low liquid level warning line.
Compared with prior art, the utility model has the beneficial effects that the utility model solves the objects such as conventional ultrasonic wave
Reason technology measure liquid level poor reliability, precision it is low, without inherent shortcomings such as visuality, networking capability differences；It solves using PC skill
Art measure liquid level system it is huge it is complicated, that real-time is poor, integrated level is low, installation difficulty is big, less economical, reliability is low etc. is intrinsic
Defect；In addition, the utility model has overturned matching for traditional liquid level measuring instrumentss using the system architecture design based on IP agreement
Set, manage, data storage and history consult mode, joined meet IT feature it is completely new manage and configuration mode.Compare biography
System mode, applies that convenient and efficient, low-cost high-efficiency, precision height, high reliablity, networking capability is strong, scalability is strong.
Detailed description of the invention
Fig. 1 is Tthe utility model system architecture diagram；
Fig. 2 is the utility model CMOS camera module control principle block diagram；
Fig. 3 is the utility model industrial level meter image-pickup method flow chart.
Specific embodiment
The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model
Clearly and completely describe, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole
Embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art are without making creative work
Every other embodiment obtained, fall within the protection scope of the utility model.
Fig. 1-3 is please referred to, the utility model provides a kind of technical solution: a kind of novel intelligent liquid level based on machine vision
Measuring instrument, including industrial level meter 1, CMOS camera module 2 and pc client 3, the CMOS camera module 2 acquire industrial liquid
The liquid level image of position meter 4, the CMOS camera module 2 are separately connected internet gateway 6 and data server by local network 5
7, data server 7 uses NVR or Network Personal Video Recorder.The internet gateway 6 connects Cloud Server 8, and the pc client 3 connects
Enter local network 5, the CMOS camera module 2 connects PLC9, the PLC9 connection DCS control system 10；CMOS camera module 2
Including microprocessor 11, ROM memory 12, RAM memory 13, network controller 14, solid state hard disk 15 and imaging sensor 16,
The microprocessor 11 is separately connected ROM memory 12, RAM memory 13, network controller 14, solid state hard disk 15 and image and passes
Sensor 16, the microprocessor 11 are also connected with RS485 transceiver 17 and 4-20mA analog interface 18, and the microprocessor 11 is adopted
With RAM processor.
In the utility model, industrial level meter 1 is equipped with normal level line, highest liquid level warning line, minimum liquid level warning
Line, liquid pump starting/valve start critical liquid level line and secondary low liquid level warning line.
The utility model Intelligent liquid level instrument built in video server, web services and configuration management based on web and video are clear
It lookes at interface, is directly connected with Ethernet, installed convenient for field adjustable, while also providing good Telnet clients circle
Face facilitates the flexible configurations application of user.User can check liquid level video data by standard web browsers；Intelligent liquid level
Real-time level video is streamed to specified data in user's local network by Ethernet using real time streaming transport protocol by instrument
Server, to carry out video storage, management, to realize networking bring distributed structure/architecture advantage.It, can by separate unit NVR
To watch, browse, play back, manage, store the liquid level video flowing of up to 64 road Intelligent liquid level instruments transmission simultaneously and be superimposed on video
Liquid level data on stream.In necessary user's occasion, can be extended using NVR matrix.This partial function is all based on IP
Framework.Terminal intelligent tank gage is managed collectively and configured by NVR has big advantage to network extension.It is specially designed
NVR can also pass through RS485 network insertion DCS control system.
Working principle: the application method of the utility model the following steps are included:
A, the relative position between fixed Intelligent liquid level instrument and industrial level meter, so that the liquid level variation that industrial level meter is presented
Region is completely in the field range of CMOS camera module of Intelligent liquid level instrument, and Intelligent liquid level instrument images mould by CMOS at this time
The video of group shooting industrial level meter, while being stored on the micro SD on Intelligent liquid level instrument；
B, Intelligent liquid level instrument collects that video frame carries out the cutting of liquid level characteristic area, smothing filtering, edge feature are mentioned to it
Take with liquid level peak detection, by the image processing algorithm of special designing calculated in 20~50ms liquid level calibration measure model
The relative value enclosed, thus obtain true level value expressed by industrial level meter, the processes such as calculated liquid level numerical value, time ginseng
Number is stored on the micro SD in the form of database on Intelligent liquid level instrument；
C, Intelligent liquid level instrument is surveyed while calculating level value by RS485 bus or 4-20mA electric current circumferential direction PLC
It controls unit and transmits real-time level data flow, and thus access DCS control system；
D, it by each terminal liquid level video flowing and is distributed in each area, subsidiary factory process control data and carries out organic combination, storage arrives
Cloud Server is shared and is analyzed through smart cloud, is locally stored from user's liquid level data, evolve to it is centrally stored, then
Develop to cloud storage.
In the utility model, industrial level meter image-pickup method is as follows:
A, video captures；
B, image smoothing filtering technique: acquisition image is pre-processed to obtain smoothed image using adaptive median filter；
C, color threshold values are divided: carrying out the identification of particular color to determine the position of liquidometer display portion；
D, useful structural information Image Edge-Detection: is extracted from different visual objects with Canny edge detecting technology；
E, it liquid level interface peak detection: after obtaining edge image, is obviously increased using interface up contour point quantity
Property determines interface level；
F, it the correction certainly of camera perspective distortion: is realized using reference point and its mapping relations of object pixel row from strong
Just.
In conclusion the utility model solves poor reliability, the precision of the physical techniques such as conventional ultrasonic wave measurement liquid level
It is low, without inherent shortcomings such as visuality, networking capability differences；It solves huge complicated, real-time using the system of PC technology measurement liquid level
The inherent shortcomings such as property is poor, integrated level is low, installation difficulty is big, less economical, reliability is low；It is based in addition, the utility model uses
The system architecture of IP agreement designs, and has overturned configuration, management, data storage and the history access side of traditional liquid level measuring instrumentss
Formula joined the completely new management for meeting IT feature and configuration mode.Compare traditional approach, apply it is convenient and efficient, low at
This is high-effect, precision is high, high reliablity, networking capability is strong, scalability is strong.
While there has been shown and described that the embodiments of the present invention, for the ordinary skill in the art,
It is understood that these embodiments can be carried out with a variety of variations in the case where not departing from the principles of the present invention and spirit, repaired
Change, replacement and variant, the scope of the utility model is defined by the appended claims and the equivalents thereof.
Claims (4)
1. a kind of novel intelligent fluid level measuring instrument based on machine vision, including industrial level meter (1), CMOS camera module (2)
With pc client (3), it is characterised in that: the liquid level image of CMOS camera module (2) acquisition industrial level meter (1), it is described
CMOS camera module (2) is separately connected internet gateway (6) and data server (7), the internet by local network (5)
Gateway (6) connects Cloud Server (8), and the pc client (3) accesses local network (5), CMOS camera module (2) connection
PLC(9), the PLC(9) connection DCS control system (10).
2. a kind of novel intelligent fluid level measuring instrument based on machine vision according to claim 1, it is characterised in that: described
CMOS camera module (2) includes microprocessor (11), ROM memory (12), RAM memory (13), network controller (14), consolidates
State hard disk (15) and imaging sensor (16), the microprocessor (11) are separately connected ROM memory (12), RAM memory
(13), network controller (14), solid state hard disk (15) and imaging sensor (16), the microprocessor (11) are also connected with RS485
Transceiver (17) and 4-20mA analog interface (4), the microprocessor (11) use RAM processor.
3. a kind of novel intelligent fluid level measuring instrument based on machine vision according to claim 1, it is characterised in that: described
Data server (7) uses NVR or Network Personal Video Recorder.
4. a kind of novel intelligent fluid level measuring instrument based on machine vision according to claim 1, it is characterised in that: described
Industrial level meter (1) is equipped with normal level line, highest liquid level warning line, minimum liquid level warning line, liquid pump starting/valve starting
Critical liquid level line and time low liquid level warning line.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109612550A (en) * | 2019-01-15 | 2019-04-12 | 江苏东方赛光电有限公司 | A kind of novel intelligent fluid level measuring instrument based on machine vision |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109612550A (en) * | 2019-01-15 | 2019-04-12 | 江苏东方赛光电有限公司 | A kind of novel intelligent fluid level measuring instrument based on machine vision |
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