CN112649636A - Meter reading system based on machine vision - Google Patents
Meter reading system based on machine vision Download PDFInfo
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- CN112649636A CN112649636A CN202011533272.XA CN202011533272A CN112649636A CN 112649636 A CN112649636 A CN 112649636A CN 202011533272 A CN202011533272 A CN 202011533272A CN 112649636 A CN112649636 A CN 112649636A
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- meter reading
- reading terminal
- wireless meter
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R11/00—Electromechanical arrangements for measuring time integral of electric power or current, e.g. of consumption
- G01R11/02—Constructional details
- G01R11/04—Housings; Supporting racks; Arrangements of terminals
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Abstract
The invention relates to a meter reading system based on machine vision.A measuring instrument is arranged on a measured object, and test data is presented on a dial plate in a pointer or digital mode; the wireless meter reading terminal and the measuring instrument are fixed on the mounting support, a dial plate of the fixed measuring instrument is parallel to a camera of the wireless meter reading terminal, the camera of the wireless meter reading terminal is located in the center of the dial plate, the wireless meter reading terminal transmits acquired visual data to the cloud service platform in a wireless mode, and the cloud service platform processes the data and then sends the data to the client; and the client sets instructions to be sent to the wireless meter reading terminal through the cloud service platform. The system has low cost and wide connection, can flexibly and controllably read the data information of the field instrument, ensures the safe and reliable operation of the industrial field, greatly improves the industrial manufacturing efficiency, reduces the resource consumption, promotes the new stage of the transition from the traditional industry to the intelligent industry, and plays a great role in promoting the digital production of the whole manufacturing industry.
Description
Technical Field
The invention relates to a data acquisition technology, in particular to a meter reading system based on machine vision.
Background
The industry is an important field of the application of the Internet of things, and a large number of instruments exist in the industrial field to monitor each production and manufacturing link, so that the timing reading of instrument data is very important. Most instruments on site adopt mechanical pointer instruments, data cannot be uploaded automatically, the traditional mode is that the terminal is manually held at intervals to read the meter, time and labor are consumed, the difficulty is high for places with high installation positions, and the meter is not easy to read. Although some existing companies adopt an inspection robot to read the meter, the developability is good, but some installation positions are difficult to beat, and the one-time investment cost of equipment is high. Therefore, it is very necessary to design a set of intelligent wireless meter reading system with low cost, large connection, flexibility and effectiveness.
Disclosure of Invention
Aiming at the problems that the existing traditional mode is time-consuming and labor-consuming and the existing mode is expensive and difficult to read, the meter reading system based on machine vision is provided.
The technical scheme of the invention is as follows: a meter reading system based on machine vision comprises a measuring instrument, a wireless meter reading terminal, a cloud service platform, a client and an installation support; the measuring instrument is arranged on a measured object, and the test data is presented on the dial plate in a pointer or digital mode; the wireless meter reading terminal and the measuring instrument are fixed on the mounting support, a dial plate of the fixed measuring instrument is parallel to a camera of the wireless meter reading terminal, the camera of the wireless meter reading terminal is located in the center of the dial plate, the wireless meter reading terminal transmits acquired visual data to the cloud service platform in a wireless mode, and the cloud service platform processes the data and then sends the data to the client; and the client sets instructions to be sent to the wireless meter reading terminal through the cloud service platform.
By adopting the technical scheme, the field data acquisition is realized, the data is read remotely, the measurement instrument used firstly does not need to be replaced, and a large amount of labor is saved.
Preferably: the wireless meter reading terminal comprises a lithium sub-battery for supplying power, a power management module, an image acquisition module, a CPU processing module and a wireless communication module; the power management module manages a module power supply in the wireless meter reading terminal, and when the system is dormant, the power supplies of the image acquisition module, the CPU processing module and the NBIOT wireless communication module are closed; a camera module in the image acquisition module shoots a pointer or a number on a dial plate of the measuring instrument at regular time, and the image is compressed into a JPEG image and sent to a CPU processing module; the CPU processing module cuts the compressed JPEG image, divides the JPEG image into a plurality of data packets and respectively sends the data packets to the NBIOT wireless communication module; and the NBIOT wireless communication module uploads the packetized image data to a cloud service platform in a TCP (transmission control protocol) mode.
By adopting the technical scheme, the image data is acquired on site in real time, the data is output in batches, and the effective combination of large-data-volume acquisition and transmission is realized.
Preferably: the cloud service platform comprises a data server, an algorithm server and an application server; the data server is used for managing, analyzing and storing the picture data uploaded by the wireless meter reading terminal; the application server is used for reading data in the data server, and comprises the measurement type, the installation position and the dial image of the measurement and control instrument;
and the algorithm server is used for identifying the image acquired by the application server by adopting a machine vision algorithm and presenting the image on the application server side in a digital mode.
By adopting the technical scheme, a large amount of cloud storage functions and powerful intelligent functions are utilized, and sharing of the industrial Internet of things is realized.
Preferably: the client is a plurality of workstations or/and a plurality of mobile phones; the workstation checks the installation position of the instrument, the dial plate image and the dial plate data information in an ip address or a recorded domain name mode through the Ethernet; the mobile phone shoots the dial plate image of the measuring instrument in a small program mode through a 4G communication network mode or a wifi network, configures related information and threshold setting of the measuring instrument, and sends out an alarm in a mode of sending mails, short messages and making a call when the set threshold is exceeded.
By adopting the technical scheme, the remote monitoring and processing functions are realized.
Preferably: the mounting bracket comprises a measuring instrument head fixing block and a wireless meter reading terminal fixing handle, one end of the measuring instrument head fixing block and one end of the wireless meter reading terminal fixing handle are both concave circular arcs, the two concave circular arcs are just opposite to form a meter head jack, a measuring instrument head is inserted into the meter head jack, threaded holes for connecting screws are symmetrically formed in two ends of the formed meter head jack, the two screws penetrate through the threaded holes of the measuring instrument head fixing block and then are connected with threaded holes of the wireless meter reading terminal fixing handle, and the inserted meter head is locked; the concave arc-shaped end of the fixed handle of the wireless meter reading terminal is a handle head, and a handle body at the end far away from the concave arc-shaped end is provided with a slotted hole for adjusting the distance between the wireless meter reading terminal and the dial.
By adopting the technical scheme, the mounting bracket with reasonable design realizes machine vision acquisition, and the mounting bracket structure has universality.
Preferably: the wireless meter reading terminal shell is a box body consisting of an upper cover and a lower cover of a battery compartment, a power management module, an image acquisition module, a CPU processing module and a wireless communication module are arranged in the box body, and a battery is arranged in the battery compartment closed by the upper cover of the battery compartment; two protruding positioning ribs are arranged outside the lower cover, the distance between the two positioning ribs is matched with the width of the wireless meter reading terminal fixing handle body, positioning threaded holes are formed in the positions, corresponding to the long slotted holes of the wireless meter reading terminal fixing handle, in the lower cover, the battery bin upper cover and the lower cover box cover are arranged on the wireless meter reading terminal fixing handle body in a guiding mode through the positioning ribs after being locked, and a bolt penetrates through the long slotted holes to enter the positioning threaded holes to be locked, so that the wireless meter reading terminal shell is fixed on the mounting support; the lower cover is provided with a camera hole and a light supplementing lamp hole right above the camera hole, the dial plate of the measuring instrument on the fixed mounting support is parallel to the camera of the wireless meter reading terminal, and the camera of the wireless meter reading terminal is located in the center of the dial plate, so that the pictures are clear and complete when being shot.
Through adopting above-mentioned technical scheme, wireless meter reading terminal shell reasonable design has made things convenient for the battery to change, and the installation adjustment is all convenient, and the structure has the commonality.
The invention has the beneficial effects that: the meter reading system based on the machine vision is low in cost and wide in connection, can flexibly and controllably read data information of a field instrument, ensures safe and reliable operation of an industrial field, greatly improves industrial manufacturing efficiency, reduces resource consumption, promotes a new transition stage from the traditional industry to the intelligent industry, and plays a great role in promoting digital production of the whole manufacturing industry.
Drawings
FIG. 1 is a schematic block diagram of a meter reading system based on machine vision according to the present invention;
FIG. 2 is a schematic view of a mounting bracket structure in the meter reading system based on machine vision according to the present invention;
FIG. 3 is a schematic structural diagram of a wireless meter reading terminal shell in the meter reading system based on machine vision according to the invention;
fig. 4 is a partial sectional view of the wireless meter reading terminal and the mounting bracket in the meter reading system based on machine vision according to the present invention after assembly.
Reference numerals: 1. a measuring instrument; 2. a wireless meter reading terminal; 3. a cloud service platform; 4. a client; 5. mounting a bracket; 50. a gauge head fixing block of the measuring instrument; 500. a threaded hole; 51, fixing a handle of the wireless meter reading terminal; 510. a gauge head jack; 511. a slot; 6. a wireless meter reading terminal shell; 60. an upper cover of the battery compartment; 61. a lower cover; 610. a light supplement lamp hole; 611. a camera hole; 612. a bottom cover baffle; 613. positioning ribs; 614. and positioning the threaded hole.
Detailed Description
The invention is described in detail below with reference to the figures and specific embodiments. The present embodiment is implemented on the premise of the technical solution of the present invention, and a detailed implementation manner and a specific operation process are given, but the scope of the present invention is not limited to the following embodiments.
As shown in fig. 1, a meter reading system based on machine vision includes a measuring instrument 1, a wireless meter reading terminal 2, a cloud service platform 3, and a client 4. The measuring instrument 1 is mounted on a plant pipe for measuring pressure or temperature data of the plant pipe, and is presented on a dial by a pointer or a number.
The circuit in the wireless meter reading terminal 2 is provided with a meter reading terminal control panel which is powered by a lithium secondary battery, and the meter reading terminal control panel is internally provided with a power management module, an image acquisition module, a CPU processing module and an NBIOT wireless communication module. The power management module is mainly used for managing the power of the wireless meter reading terminal equipment; the image acquisition module is mainly used for regularly shooting a pointer or a number on a dial plate of the measuring instrument 1 through a camera module and compressing the pointer or the number into a JPEG (joint photographic experts group) graph by means of a compression engine technology in the camera; the CPU processing module mainly cuts the compressed JPEG image, divides the JPEG image into a plurality of data packets and respectively sends the data packets to the NBIOT wireless communication module; and the NBIOT wireless communication module uploads the packetized image data to a cloud service platform in a TCP (transmission control protocol) mode. In addition, in order to ensure longer standby time, the wireless meter reading terminal 2 adopts a power management chip with low power consumption in hardware selection and also adopts the idea of power supply sectional management in circuit design, when the equipment works normally, the power modules of the image acquisition module, the CPU processing module and the NBIOT wireless communication module are in a power supply state, once the equipment is in a dormant state, the function of the CPU processing module is stopped, the power control enabling ends of the image acquisition module and the NBIOT wireless communication module are disconnected, and the power consumption of the whole equipment is ensured to be the lowest.
The cloud service platform 3 is arranged at a cloud end, receives data transmitted from the wireless meter reading terminal 2 through the NBIOT wireless module, and at least comprises a data server, an algorithm server and an application server. The data server is used for managing, analyzing and storing the image data uploaded by the wireless meter reading terminal; the application server is used for reading data in the data server, and the data comprises the measurement type, the installation position, the dial plate image and the like of the measurement and control instrument 1 and is displayed on a display interface; in order to facilitate the data acquisition of the instrument, the algorithm server is used for identifying the image acquired by the application server by adopting a machine vision algorithm and presenting the image on the application server side in a digital mode.
The client 4 is arranged on the client side and can be a plurality of workstations or/and a plurality of mobile phones. The workstation checks the installation position of the instrument, the dial plate image, the dial plate data and other related information in an ip address or a recorded domain name mode through the Ethernet. The mobile phone shoots the dial plate image of the measuring instrument in a small program mode through a 4G communication network mode or a wifi network, configures related information and threshold setting of the measuring instrument, and sends out an alarm in a mode of sending mails, short messages and making a call when the set threshold is exceeded.
As shown in fig. 2, the wireless meter reading terminal 2 is fixed to the measuring instrument 1 through a mounting bracket 5. The mounting bracket 5 comprises a measuring instrument head fixing block 50 and a wireless meter reading terminal fixing handle 51, one end of the measuring instrument head fixing block 50 and one end of the wireless meter reading terminal fixing handle 51 are both in the shape of a concave arc, the two concave arcs are just opposite to form a meter head jack 510, the measuring instrument head is inserted into the meter head jack 510, threaded holes 500 for connecting screws are symmetrically formed in two ends of the formed meter head jack 510, the two screws penetrate through the threaded holes of the measuring instrument head fixing block 50 and then are connected with the threaded holes of the wireless meter reading terminal fixing handle 51, and the inserted meter head is locked. The gauge outfit insertion hole 510, i.e. the concave arc shape, is designed according to the diameter of the gauge outfit 1, ensuring that the gauge outfit 1 and the mounting bracket are reliably fixed.
The concave arc-shaped end of the fixed handle 51 of the wireless meter reading terminal is a handle head, and a long slotted hole 511 is arranged on the handle body at the end far away from the concave arc-shaped end and is used for adjusting the distance between the wireless meter reading terminal and the dial plate when the wireless meter reading terminal is installed rapidly.
As shown in fig. 3, which is a structural diagram of the housing 6 of the wireless meter reading terminal 2, and in fig. 4, which is a partial sectional view after assembly, the housing 6 of the wireless meter reading terminal is composed of a battery compartment upper cover 60 and a battery compartment lower cover 61, and batteries are placed in the battery compartment closed on the battery compartment upper cover 60. The lower cover 61 is provided with two protruding positioning ribs 613, the distance between the two positioning ribs 613 is matched with the width of the handle body of the wireless meter reading terminal fixing handle 51, a positioning threaded hole 614 is arranged in the lower cover 61 at a position corresponding to the long slotted hole 511 of the wireless meter reading terminal fixing handle 51, the battery compartment upper cover 60 and the lower cover 61 are arranged on the handle body of the wireless meter reading terminal fixing handle 51 through the guiding of the positioning ribs 613 after being locked, and a bolt penetrates through the long slotted hole 511 to enter the positioning threaded hole 614 for locking, so that the wireless meter reading terminal shell 6 is fixed on the mounting bracket 5. The lower cover 61 is provided with a camera hole 611 and a light supplement lamp hole 610 right above the camera hole 611, and the dial plate of the measuring instrument 1 on the fixed mounting bracket 5 is parallel to the camera of the wireless meter reading terminal 2 and the camera of the wireless meter reading terminal 2 is located at the center of the dial plate, so that the pictures are clear and complete during shooting.
When the surrounding environment is dark, the supplementary lighting lamp assists in lighting, and the dial plate is lightened. In order to facilitate flexible installation of the equipment, the wireless terminal equipment 2 is powered by a lithium sub-battery, so that the minimum self-discharge current is ensured, and the service life of the battery is prolonged. In order to ensure the safety of the battery, the battery is placed in the sealed battery compartment, the service life of the battery is considered, the correlation between the reading frequency and the signal strength of the wireless meter reading terminal is very large, the service life of the battery is limited, and in order to quickly replace the battery, the battery compartment and the battery are integrally designed, so that the battery is convenient to replace. There are several bottom cover baffles 612 on the side of the lower cover 61 with the camera hole 611 and the fill-in light hole 610, and when the meter reading terminal control board is installed in the lower cover 61, the bottom cover baffles 612 are used as the bottom corner for the lower cover 61 to rest.
In order to check the monitoring information of the measuring instrument 1 more clearly and more intuitively, the client can clearly check the relevant conditions of the current measuring instrument 1 by calling the real-time checking window; by calling the historical data window, the overall change situation and specific data of the measuring instrument 1 in a certain period of time can be inquired. The whole system can automatically generate reports in the format of adult, month, day, hour, minute and second according to the requirements of customers so as to be convenient for filing processing.
Claims (6)
1. A meter reading system based on machine vision is characterized by comprising a measuring instrument, a wireless meter reading terminal, a cloud service platform, a client and a mounting bracket; wherein: the measuring instrument is arranged on a measured object, and the test data is presented on the dial plate in a pointer or digital mode; the wireless meter reading terminal and the measuring instrument are fixed on the mounting support, a dial plate of the fixed measuring instrument is parallel to a camera of the wireless meter reading terminal, the camera of the wireless meter reading terminal is located in the center of the dial plate, the wireless meter reading terminal transmits acquired visual data to the cloud service platform in a wireless mode, and the cloud service platform processes the data and then sends the data to the client; and the client sets instructions to be sent to the wireless meter reading terminal through the cloud service platform.
2. The machine vision-based meter reading system according to claim 1, wherein the wireless meter reading terminal comprises a lithium sub-battery for supplying power, a power management module, an image acquisition module, a CPU processing module and a wireless communication module; the power management module manages a module power supply in the wireless meter reading terminal, and when the system is dormant, the power supplies of the image acquisition module, the CPU processing module and the NBIOT wireless communication module are closed; a camera module in the image acquisition module shoots a pointer or a number on a dial plate of the measuring instrument at regular time, and the image is compressed into a JPEG image and sent to a CPU processing module; the CPU processing module cuts the compressed JPEG image, divides the JPEG image into a plurality of data packets and respectively sends the data packets to the NBIOT wireless communication module; and the NBIOT wireless communication module uploads the packetized image data to a cloud service platform in a TCP (transmission control protocol) mode.
3. The machine vision-based meter reading system according to claim 1 or 2, wherein the cloud service platform comprises a data server, an algorithm server and an application server;
the data server is used for managing, analyzing and storing the picture data uploaded by the wireless meter reading terminal;
the application server is used for reading data in the data server, including the measurement type, the installation position, the dial image and the like of the measurement and control instrument;
and the algorithm server is used for identifying the image acquired by the application server by adopting a machine vision algorithm and presenting the image on the application server side in a digital mode.
4. The machine vision-based meter reading system according to claim 3, wherein the client is a plurality of workstations or/and a plurality of mobile phones; the workstation checks the installation position of the instrument, the dial plate image and the dial plate data information in an ip address or a recorded domain name mode through the Ethernet; the mobile phone shoots the dial plate image of the measuring instrument in a small program mode through a 4G communication network mode or a wifi network, configures related information and threshold setting of the measuring instrument, and sends out an alarm in a mode of sending mails, short messages and making a call when the set threshold is exceeded.
5. The machine vision-based meter reading system according to claim 1, wherein the mounting bracket comprises a measuring instrument head fixing block and a wireless meter reading terminal fixing handle, one end of the measuring instrument head fixing block and one end of the wireless meter reading terminal fixing handle are both concave circular arcs, the two concave circular arcs are opposite to form a head jack, the measuring instrument head is inserted into the head jack, threaded holes for connecting screws are symmetrically formed at two ends of the formed head jack, and the two screws penetrate through the threaded holes of the measuring instrument head fixing block and then are connected with the threaded holes of the wireless meter reading terminal fixing handle to lock the inserted meter head; the concave arc-shaped end of the fixed handle of the wireless meter reading terminal is a handle head, and a handle body at the end far away from the concave arc-shaped end is provided with a slotted hole for adjusting the distance between the wireless meter reading terminal and the dial.
6. The machine vision-based meter reading system according to claim 5, wherein the wireless meter reading terminal housing is a box body consisting of an upper cover and a lower cover of a battery compartment, the power management module, the image acquisition module, the CPU processing module and the wireless communication module are arranged in the box body, and the battery is arranged in the battery compartment closed on the upper cover of the battery compartment; two protruding positioning ribs are arranged outside the lower cover, the distance between the two positioning ribs is matched with the width of the wireless meter reading terminal fixing handle body, positioning threaded holes are formed in the positions, corresponding to the long slotted holes of the wireless meter reading terminal fixing handle, in the lower cover, the battery bin upper cover and the lower cover box cover are arranged on the wireless meter reading terminal fixing handle body in a guiding mode through the positioning ribs after being locked, and a bolt penetrates through the long slotted holes to enter the positioning threaded holes to be locked, so that the wireless meter reading terminal shell is fixed on the mounting support; the lower cover is provided with a camera hole and a light supplementing lamp hole right above the camera hole, the dial plate of the measuring instrument on the fixed mounting support is parallel to the camera of the wireless meter reading terminal, and the camera of the wireless meter reading terminal is located in the center of the dial plate, so that the pictures are clear and complete when being shot.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011533272.XA CN112649636A (en) | 2020-12-23 | 2020-12-23 | Meter reading system based on machine vision |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011533272.XA CN112649636A (en) | 2020-12-23 | 2020-12-23 | Meter reading system based on machine vision |
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| CN112649636A true CN112649636A (en) | 2021-04-13 |
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| CN202011533272.XA Pending CN112649636A (en) | 2020-12-23 | 2020-12-23 | Meter reading system based on machine vision |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114339479A (en) * | 2021-12-28 | 2022-04-12 | 国网河南省电力公司济源供电公司 | Intelligent micropower meter identification device |
| CN114992438A (en) * | 2022-05-16 | 2022-09-02 | 湖北骏翔电子科技有限公司 | High-stability wireless remote meter reading system and method |
-
2020
- 2020-12-23 CN CN202011533272.XA patent/CN112649636A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114339479A (en) * | 2021-12-28 | 2022-04-12 | 国网河南省电力公司济源供电公司 | Intelligent micropower meter identification device |
| CN114992438A (en) * | 2022-05-16 | 2022-09-02 | 湖北骏翔电子科技有限公司 | High-stability wireless remote meter reading system and method |
| CN114992438B (en) * | 2022-05-16 | 2024-04-19 | 湖北骏翔电子科技有限公司 | High-stability wireless remote meter reading system and method thereof |
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