CN214473107U - Gas analysis instrument based on internet of things technology - Google Patents
Gas analysis instrument based on internet of things technology Download PDFInfo
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- CN214473107U CN214473107U CN202023160136.9U CN202023160136U CN214473107U CN 214473107 U CN214473107 U CN 214473107U CN 202023160136 U CN202023160136 U CN 202023160136U CN 214473107 U CN214473107 U CN 214473107U
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Abstract
A gas analysis instrument based on the technology of the Internet of things comprises a single chip microcomputer digital system, a communication unit, a display screen, an Ethernet interface, a gas sampling unit, a gas measuring unit and a gas recharging unit; the communication unit, the display screen, the Ethernet interface and the gas measurement unit are in bidirectional signal connection with the single-chip microcomputer digital system, the gas outlet of the gas sampling unit is connected with the gas inlet of the gas measurement unit, and the gas outlet of the gas measurement unit is connected with the gas inlet of the gas recharging unit. The utility model discloses gaseous back of sulfur hexafluoride in the high tension switchgear detects the back again and fills or retrieve, convenient operation, and test data is accurate to combine emerging internet of things such as the long-range firmware update of current instrument, remote configuration, 4G CAT.1, will in time convey the distal end server to the gaseous data of sulfur hexafluoride of high tension switchgear measurement, and combine big data analysis, the manpower and cost have been saved to timely discovery problem.
Description
Technical Field
The utility model relates to an electric power instrument, concretely relates to gas analysis instrument based on internet of things such as AIoT, 4G CAT.1.
Background
Cracking the insulating material in sulfur hexafluoride electrical equipment to obtain the main product (SO)2、H2S、CO、HF、H2) Content of (1), SF6Purity, dew point temperature SF6Important parameter indexes for reliable operation of electrical equipment such as circuit breakers, mutual inductors, GIS (gas insulated switchgear) and transformers, namely traditional SF (sulfur hexafluoride)6The comprehensive detection instrument can locally analyze and store the parameters and quickly locate the fault; however, with the development of emerging technologies of the internet of things, the defects of the traditional instrument are more and more prominent, and workers must go to the site to check historical data or import the data into the PC software through storage devices such as a flash disk for further analysis, which wastes manpower and material resources.
SUMMERY OF THE UTILITY MODEL
In order to overcome the defects of the prior art, the utility model provides a novel SF that possesses thing networking management function based on AIoT, 4G CAT.1 technique6The gas analysis instrument has the advantages of remotely and timely discovering data abnormity, checking data trend, remotely maintaining equipment and remotely upgrading the equipment.
In order to solve the technical problem, the utility model adopts the following technical scheme: a gas analysis instrument based on the technology of the Internet of things comprises a single chip microcomputer digital system, a communication unit, a display screen, an Ethernet interface, a gas sampling unit, a gas measuring unit and a gas recharging unit; the communication unit, the display screen, the Ethernet interface and the gas measurement unit are in bidirectional signal connection with the single-chip microcomputer digital system, the gas outlet of the gas sampling unit is connected with the gas inlet of the gas measurement unit, and the gas outlet of the gas measurement unit is connected with the gas inlet of the gas recharging unit.
The gas sampling unit comprises a sampling pipeline, wherein a gas inlet/recharge quick-plug connector, a first two-way electromagnetic valve, a pressure stabilizing valve and a flow regulating valve are sequentially arranged on the sampling pipeline along the gas flow direction, and a gas outlet of the sampling pipeline is connected with a gas inlet of the gas measuring unit; the first two-way electromagnetic valve, the pressure stabilizing valve and the flow regulating valve are all connected with the single chip microcomputer digital system through data lines.
The pressure stabilizing valve is connected in parallel with a straight pipeline, and a second two-way electromagnetic valve is arranged on the straight pipeline.
The gas recharging unit comprises a recharging pipeline, the gas measuring unit comprises a humidity sensor, a decomposition product detecting module and a purity detecting module, the recharging pipeline is sequentially provided with the humidity sensor, the decomposition product detecting module, the purity detecting module, a drying and recycling module, a first two-position three-way electromagnetic valve, a recharging pump with a gas storage tank, a pressure sensor, a second two-position three-way electromagnetic valve and a first one-way valve along the airflow direction, a gas inlet of the recharging pipeline is connected with a gas outlet of the gas measuring unit, and a gas outlet of the recharging pipeline is connected to a sampling pipeline between the gas inlet/recharging quick plug connector and the first two-way electromagnetic valve; the humidity sensor, the decomposition product detection module, the purity detection module, the first two-position three-way electromagnetic valve, the recharging pump, the pressure sensor and the second two-position three-way electromagnetic valve are all connected with the single chip microcomputer digital system through signal lines.
The third interface of the first two-position three-way electromagnetic valve is connected with a normal pressure recovery pipe.
And a third interface of the second two-position three-way electromagnetic valve is connected with a high-pressure recovery pipe, and a second one-way valve is arranged on the high-pressure recovery pipe.
Adopt above-mentioned technical scheme, the utility model discloses a work flow does: the gas inlet/recharging quick connector is connected with a high-voltage switch, sampling flow is set through a display screen, parameters such as cache time and the like are measured, and the single-chip microcomputer digital system controls the gas sampling unit to sample SF in the high-voltage switch according to preset sampling flow6Gas enters the gas measuring unit through the gas inlet/recharging quick connector, the first two-way electromagnetic valve, the pressure reducing valve and the flow regulating valve, and the gas measuring unit measures SF6Gas is analyzed, then the gas enters a recharging pipeline, under the suction of the recharging pump, the gas sequentially passes through a humidity sensor, a decomposition product detection module and a purity detection module, the humidity sensor detects the dew point of the gas, the decomposition product of the gas of the decomposition product detection module and the purity of the gas are detected by the purity detection module, then the gas is dried by a drying and recycling module and then enters a gas storage tank of the recharging pump for caching through a first two-position three-way electromagnetic valve, detection signals output by the humidity sensor, the decomposition product detection module and the purity detection module are transmitted to a single-chip microcomputer digital system through signal processing, the single-chip microcomputer digital system takes out a sampling value through an SPI/I2C digital interface, when the caching pressure reaches a set pressure limit or reaches a caching time timeout, namely, when the pressure of a gas circuit is balanced, the single-chip microcomputer digital system carries out the measured gas (decomposition product, purity detection module and purity detection module) according to calibrated parameters, Purity and dew point), closing the first two-way electromagnetic valve, starting the recharge pump to recharge the cache gas into the high-pressure switch through the second two-position three-way electromagnetic valve, the first one-way valve and the gas inlet/recharge quick connector; when the high-voltage switch is not required to be refilled, the buffer gas is pressed into the recovery container through the high-voltage recovery pipe by switching the second two-position three-way electromagnetic valve, and the measurement is completed. If the recovery under normal pressure is needed,and closing the recharging pump, switching the first two-position three-way electromagnetic valve, and discharging the measured gas through the normal-pressure recovery pipe. If pressure stabilization is not needed during measurement, the second two-way electromagnetic valve is opened, and gas can directly enter the gas measurement unit.
The single chip microcomputer digital system is simultaneously released to an MQTT proxy service platform through an Ethernet interface or a communication unit (4G CAT.1 communication module) and an MQTT protocol, the data is directly pushed by a proxy server or processed by an MQTT service application server and then pushed to each client side by the proxy server for further display, alarm, data trend prejudgment and alarm reverse control, and the MQTT service server has the function of SF6Analyzing the FOTA firmware upgrade authority of the meter.
The communication unit adopts a CAT.14G module EC200S newly promoted by remote communication, the module has an uplink rate of 10Mbps and a downlink rate of 5Mbps, can meet the bidirectional transmission of data of the Internet of things, and has high cost performance; the module core adopts a domestic ASR platform, and is more autonomous and controllable; a USB and a serial port are externally reserved, and a perfect TCP/IP protocol stack is internally arranged; the system uses serial AT commands and module interactive data.
The digital system of the single chip microcomputer adopts domestic autonomous GD32F407 series, the NOR Flash adopts domestic autonomous GD25Q256D, the QSPI interface is hung on the single chip microcomputer, and the FAT32 file system is hung for data storage and parameter storage.
The digital system of the single chip microcomputer completes complex operation, not only the accuracy and the real-time performance of measurement are guaranteed, but also network data are interacted, in order to give full play to the performance of the MCU, a domestic autonomous RT-Thread Internet of things operating system is developed as a carrier, the RT-Thread open source is free, an Apache-2.0 open source protocol is followed, and abundant components are provided for users to use.
The meter interacts data through an MQTT Internet of things communication protocol, the MQTT protocol is based on a client/MQTT agent mode, and the client subscribes and publishes related subject messages to interact data.
The instrument integrates a wired network card and a wireless network card, one network card can be used independently or two network cards can be used simultaneously, a network card management component manages the two network cards and is named as e0 and ec200x respectively, e0 serves as a default network card, and when an e0 network fails, the network card component can automatically find ec200x in a network card list to serve as the default network card, so that the smoothness and reliability of communication are guaranteed.
The meter creates an MQTT client thread, an MQTT data receiving and analyzing service thread, an MQTT data publishing service thread, a sensor signal processing thread, a data analyzing and storing thread, a logic control thread and an HTTP OTA remote firmware downloading thread on an application layer to solve the problems.
To sum up, the utility model discloses gaseous the back of detecting back of sulfur hexafluoride in the high voltage switch fills or retrieves again, convenient operation, and test data is accurate to combine emerging internet of things such as current thing networking (AIoT), the long-range firmware of instrument is updated (FOTA), remote configuration, 4G CAT.1, will in time convey the distal end server to the gaseous data (decomposition product, purity, dew point) of sulfur hexafluoride of high voltage switch measurement, and combine big data analysis, the manpower and cost have been saved to timely discovery problem.
Drawings
FIG. 1 is a block diagram of the overall system of the present invention;
fig. 2 is a block diagram of the gas flow in the present invention.
Detailed Description
As shown in fig. 1 and fig. 2, the utility model discloses a gas analysis instrument based on internet of things, including singlechip digital system 1, communication unit 2, display screen 3, ethernet interface 4, gas sampling unit 5, gas measuring unit 6 and gas recharging unit 7; the communication unit 2, the display screen 3, the Ethernet interface 4 and the gas measurement unit 6 are in bidirectional signal connection with the single-chip microcomputer digital system 1, the gas outlet of the gas sampling unit 5 is connected with the gas inlet of the gas measurement unit 6, and the gas outlet of the gas measurement unit 6 is connected with the gas inlet of the gas recharging unit 7.
The gas sampling unit 5 comprises a sampling pipeline 8, a gas inlet/recharging quick plug 9, a first two-way electromagnetic valve 10, a pressure stabilizing valve 11 and a flow regulating valve 12 are sequentially arranged on the sampling pipeline 8 along the gas flow direction, and a gas outlet of the sampling pipeline 8 is connected with a gas inlet of the gas measuring unit 6; the first two-way electromagnetic valve 10, the pressure stabilizing valve 11 and the flow regulating valve 12 are all connected with the single chip digital system 1 through data lines.
The pressure stabilizing valve 11 is connected in parallel with a straight pipeline 13, and a second two-way electromagnetic valve 14 is arranged on the straight pipeline 13.
The gas recharging unit 7 comprises a recharging pipeline 15, the gas measuring unit 6 comprises a humidity sensor 40, a decomposition product detecting module 41 and a purity detecting module 42, the recharging pipeline 15 is sequentially provided with the humidity sensor 40, the decomposition product detecting module 41, the purity detecting module 42, a drying and recovering module 43, a first two-position three-way electromagnetic valve 17, a recharging pump 18 with a gas storage tank 16, a pressure sensor 19, a second two-position three-way electromagnetic valve 20 and a first one-way valve 21 along the airflow direction, the gas inlet of the recharging pipeline 15 is connected with the gas outlet of the gas measuring unit 6, and the gas outlet of the recharging pipeline 15 is connected with the sampling pipeline 8 between the gas inlet/recharging quick plug 9 and the first two-way electromagnetic valve 10; the humidity sensor 40, the decomposition product detection module 41, the purity detection module 42, the first two-position three-way electromagnetic valve 17, the recharge pump 18, the pressure sensor 19 and the second two-position three-way electromagnetic valve 20 are all connected with the single chip microcomputer digital system 1 through signal lines.
The third interface of the first two-position three-way electromagnetic valve 17 is connected with a normal pressure recovery pipe 22.
The third interface of the second two-position three-way electromagnetic valve 20 is connected with a high-pressure recovery pipe 23, and a second one-way valve 24 is arranged on the high-pressure recovery pipe 23.
The utility model discloses a work flow does: the quick connector 9 for air inlet/back-filling is connected with a high-voltage switch 46 through a detection pipe 44, a ball valve 45 is arranged on the detection pipe 44, sampling flow is set through the display screen 3, parameters such as cache time and the like are measured, and the single-chip digital system 1 controls the gas sampling unit 5 to sample SF in the high-voltage switch 46 according to the preset sampling flow6Gas enters the gas measuring unit 6 through the gas inlet/recharging quick connector 9, the first two-way electromagnetic valve 10, the pressure reducing valve and the flow regulating valve 12, and the gas measuring unit 6 measures SF6The gas is analyzed, then the gas enters the recharging pipeline 15, and under the suction of the recharging pump 18, the gas passes through the humidity sensor 40, the decomposition product detection module 41, the purity detection module 42 and the humidity sensor 40 in sequenceThe sensor 40 detects the dew point of the gas, the decomposition product of the gas of the decomposition product detection module 41 and the purity of the gas of the purity detection module 42 are detected, then the gas is dried by the drying and recycling module 43 and enters the gas storage tank 16 of the recharging pump 18 through the first two-position three-way electromagnetic valve 17 to be cached, the detection signals output by the humidity sensor 40, the decomposition product detection module 41 and the purity detection module 42 are transmitted to the singlechip digital system 1 through signal processing, the singlechip digital system 1 takes out the sampling value through the SPI/I2C digital interface, when the caching pressure reaches the set pressure limit or the caching time exceeds, namely, when the gas path pressure is balanced, the singlechip digital system 1 calculates, analyzes and stores the data of the measured gas (the decomposition product, the purity and the dew point) according to the calibrated parameters, and simultaneously the first two-way electromagnetic valve 10 is closed, Starting the recharge pump 18 to recharge the buffer gas into the high-voltage switch 46 through the second two-position three-way electromagnetic valve 20, the first one-way valve 21 and the inlet/recharge quick connector 9; when the high-voltage switch 46 is not required to be refilled, the buffer gas is pressed into the recovery container through the high-voltage recovery pipe 23 by switching the second two-position three-way electromagnetic valve 20, and the measurement is completed. If the normal pressure recovery is needed, the refilling pump 18 is closed, the first two-position three-way electromagnetic valve 17 is switched, and the measured gas is discharged through the normal pressure recovery pipe 22. If no pressure stabilization is needed during measurement, the second two-way solenoid valve 14 is opened, and the gas can directly enter the gas measurement unit 6. The arrows in fig. 2 indicate the flow of sulfur hexafluoride gas.
The single chip microcomputer digital system 1 is connected with the router 30 through the Ethernet interface 4 or the communication unit 2 (4G CAT.1 communication module) at the same time, the Ethernet interface 4 is connected with the communication unit 2 is connected with the operator base station 31, and is issued to the MQTT proxy service platform through the MQTT protocol, after the data is directly pushed by the MQTT proxy server 25 or processed by the MQTT business application server 26, the data is pushed to each MQTT client 27 by the MQTT proxy server 25 to be further displayed, alarmed, prejudged on the trend of the data and reversely controlled by alarming, and the MQTT business application server 26 has the function of SF data processing6Analyzing the FOTA firmware upgrade authority of the meter.
The communication unit 2 adopts a CAT.14G module EC200S newly introduced by remote communication, the module has an uplink rate of 10Mbps and a downlink rate of 5Mbps, can meet the bidirectional transmission of data of the Internet of things, and has high cost performance; the module core adopts a domestic ASR platform, and is more autonomous and controllable; a USB and a serial port are externally reserved, and a perfect TCP/IP protocol stack is internally arranged; the system uses serial AT commands and module interactive data.
The single chip microcomputer digital system 1 adopts domestic autonomous GD32F407 series, NOR Flash (FAT file system 28) adopts domestic autonomous GD25Q256D, is hung to a QSPI interface of the single chip microcomputer, and is used for data storage and parameter storage by hanging a FAT32 file system.
The single-chip microcomputer digital system 1 completes complex operation, not only the accuracy and the real-time performance of measurement are guaranteed, but also network data are interacted, in order to give full play to the performance of the MCU, a home-made independent RT-Thread Internet of things operating system is developed for a carrier, the RT-Thread is free of charge and follows an Apache-2.0 open-source protocol, and abundant components are provided for users to use.
The meter interacts data through an MQTT Internet of things communication protocol, the MQTT protocol is based on a client/MQTT agent mode, and the client subscribes and publishes related subject messages to interact data.
The instrument integrates a wired network card and a wireless network card, one network card can be used independently or two network cards can be used simultaneously, a network card management component manages the two network cards and is named as e0 and ec200x respectively, e0 serves as a default network card, and when an e0 network fails, the network card component can automatically find ec200x in a network card list to serve as the default network card, so that the smoothness and reliability of communication are guaranteed.
The meter creates an MQTT client thread, an MQTT data receiving and analyzing service thread, an MQTT data publishing service thread, a sensor signal processing thread, a data analyzing and storing thread, a logic control thread and an HTTP OTA remote firmware downloading thread on an application layer to solve the problems.
It is important to note that the control and signal transmission/reception of the digital system 1 of the single chip microcomputer of the present invention does not require a new computer program.
The present embodiment is not intended to limit the shape, material, structure, etc. of the present invention in any form, and all of the technical matters of the present invention belong to the protection scope of the present invention to any simple modification, equivalent change and modification made by the above embodiments.
Claims (6)
1. The utility model provides a gas analysis instrument based on internet of things, its characterized in that: the system comprises a singlechip digital system, a communication unit, a display screen, an Ethernet interface, a gas sampling unit, a gas measuring unit and a gas recharging unit; the communication unit, the display screen, the Ethernet interface and the gas measurement unit are in bidirectional signal connection with the single-chip microcomputer digital system, the gas outlet of the gas sampling unit is connected with the gas inlet of the gas measurement unit, and the gas outlet of the gas measurement unit is connected with the gas inlet of the gas recharging unit.
2. The gas analysis instrument based on the technology of the internet of things according to claim 1, wherein: the gas sampling unit comprises a sampling pipeline, wherein a gas inlet/recharge quick-plug connector, a first two-way electromagnetic valve, a pressure stabilizing valve and a flow regulating valve are sequentially arranged on the sampling pipeline along the gas flow direction, and a gas outlet of the sampling pipeline is connected with a gas inlet of the gas measuring unit; the first two-way electromagnetic valve, the pressure stabilizing valve and the flow regulating valve are all connected with the single chip microcomputer digital system through data lines.
3. The gas analysis meter based on the internet of things technology as claimed in claim 1 or 2, wherein: the pressure stabilizing valve is connected in parallel with a straight pipeline, and a second two-way electromagnetic valve is arranged on the straight pipeline.
4. The gas analysis instrument based on the internet of things technology as claimed in claim 3, wherein: the gas recharging unit comprises a recharging pipeline, the gas measuring unit comprises a humidity sensor, a decomposition product detecting module and a purity detecting module, the recharging pipeline is sequentially provided with the humidity sensor, the decomposition product detecting module, the purity detecting module, a drying and recycling module, a first two-position three-way electromagnetic valve, a recharging pump with a gas storage tank, a pressure sensor, a second two-position three-way electromagnetic valve and a first one-way valve along the airflow direction, a gas inlet of the recharging pipeline is connected with a gas outlet of the gas measuring unit, and a gas outlet of the recharging pipeline is connected to a sampling pipeline between the gas inlet/recharging quick plug connector and the first two-way electromagnetic valve; the humidity sensor, the decomposition product detection module, the purity detection module, the first two-position three-way electromagnetic valve, the recharging pump, the pressure sensor and the second two-position three-way electromagnetic valve are all connected with the single chip microcomputer digital system through signal lines.
5. The gas analysis instrument based on the technology of the internet of things according to claim 4, wherein: the third interface of the first two-position three-way electromagnetic valve is connected with a normal pressure recovery pipe.
6. The gas analysis instrument based on the technology of the internet of things according to claim 4, wherein: and a third interface of the second two-position three-way electromagnetic valve is connected with a high-pressure recovery pipe, and a second one-way valve is arranged on the high-pressure recovery pipe.
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| CN202023160136.9U CN214473107U (en) | 2020-12-24 | 2020-12-24 | Gas analysis instrument based on internet of things technology |
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| CN202023160136.9U CN214473107U (en) | 2020-12-24 | 2020-12-24 | Gas analysis instrument based on internet of things technology |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114779863A (en) * | 2022-06-14 | 2022-07-22 | 山东智奇环境技术有限公司 | Automatic change hydrogen manufacturing intelligence control system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114779863A (en) * | 2022-06-14 | 2022-07-22 | 山东智奇环境技术有限公司 | Automatic change hydrogen manufacturing intelligence control system |
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