CN113419036A - Portable flue gas monitoring data acquisition system, device and method based on 5G communication - Google Patents
Portable flue gas monitoring data acquisition system, device and method based on 5G communication Download PDFInfo
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- 238000012544 monitoring process Methods 0.000 title claims abstract description 122
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- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 title claims abstract description 46
- 239000003546 flue gas Substances 0.000 title claims abstract description 46
- 238000000034 method Methods 0.000 title claims abstract description 36
- 239000000779 smoke Substances 0.000 claims abstract description 42
- 238000012545 processing Methods 0.000 claims abstract description 41
- 239000003344 environmental pollutant Substances 0.000 claims abstract description 37
- 231100000719 pollutant Toxicity 0.000 claims abstract description 33
- 239000007789 gas Substances 0.000 claims abstract description 28
- 239000000428 dust Substances 0.000 claims abstract description 24
- 230000007613 environmental effect Effects 0.000 claims description 24
- 238000006243 chemical reaction Methods 0.000 claims description 12
- 239000000356 contaminant Substances 0.000 claims description 10
- 238000013480 data collection Methods 0.000 claims description 4
- 238000002372 labelling Methods 0.000 claims description 3
- 230000003068 static effect Effects 0.000 claims description 3
- 230000008054 signal transmission Effects 0.000 claims description 2
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- 229910052744 lithium Inorganic materials 0.000 description 8
- 238000004458 analytical method Methods 0.000 description 5
- 238000005070 sampling Methods 0.000 description 5
- 238000007430 reference method Methods 0.000 description 4
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 3
- 238000010790 dilution Methods 0.000 description 3
- 239000012895 dilution Substances 0.000 description 3
- 239000001301 oxygen Substances 0.000 description 3
- 229910052760 oxygen Inorganic materials 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 2
- 238000004364 calculation method Methods 0.000 description 2
- 238000004868 gas analysis Methods 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 239000013618 particulate matter Substances 0.000 description 2
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- 229920006351 engineering plastic Polymers 0.000 description 1
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Abstract
The invention discloses a portable flue gas monitoring data acquisition system based on 5G communication, which comprises a data acquisition module, a data display and processing module and a data communication module, wherein the data acquisition module is used for acquiring signals of one or more instruments of a temperature instrument, a humidity instrument, a flow velocity instrument, a pressure instrument, a smoke dust instrument and a gas analyzer; and the collected signals are transmitted to the data display and processing module through the data communication module, the data display and processing module processes the received signals to obtain processed data, the processed data is compared with the reference value to obtain a monitoring result, and the monitoring result is transmitted to the environment-friendly monitoring center through the data communication module. The invention also comprises a portable smoke monitoring data acquisition device and a portable smoke monitoring data acquisition method based on 5G communication, which can monitor pollutants discharged on site, obtain monitoring results on site, and upload the monitoring results to an environment-friendly monitoring center, thereby facilitating the field law enforcement of environment-friendly workers.
Description
Technical Field
The invention belongs to the field of environmental monitoring, and particularly relates to a portable flue gas monitoring data acquisition system, a portable flue gas monitoring data acquisition device and a portable flue gas monitoring data acquisition method based on 5G communication.
Background
CEMS is an abbreviation of Continuous Emission Monitoring System, and refers to parameters (temperature, pressure, flow rate, humidity) of flue gas emitted from a fixed pollutant source and gaseous pollutants (SO)2NOx) and the particulate matter, and simultaneously transmits the monitored environmental protection data to a device of an environmental protection department in real time, which is called as an automatic flue gas monitoring system and also called as a continuous flue gas emission monitoring system.
Generally, a corresponding continuous flue gas emission monitoring system (CEMS) is arranged at a flue gas emission outlet of industrial emission, SO that the particulate matter concentration and the gaseous pollutant concentration (SO) in the flue gas emission are monitored in real time2NOx), flue gas parameters (temperature, pressure, flow rate, humidity, oxygen content) and the like, simultaneously calculates the discharge rate and discharge amount of pollutants in the flue gas, displays and records various data and parameters to form a relevant chart, and transmits the data, pictures and texts and the like to a management department through an environment-friendly data acquisition instrument.
In order to ensure the accuracy of data measured by the CEMS, environmental protection standards such as HJ75-2017 and HJ76-2017 set by environmental protection departments specify that a reference method is used for carrying out spot check and verification on technical indexes of 'accuracy' of monitoring data of the normally-operated CEMS, and the monitoring results of the CEMS system installed and used on site are effectively judged.
At present, a 'reference method' is generally adopted for carrying out on-site comparison when detection is carried out by an environmental protection department or a third-party detection unit, the 'reference method' is an analysis method adopted for verifying accuracy of monitoring data of a CEMS system, in actual monitoring, monitoring items contained in the reference method are various, instruments used for collecting data comprise a portable flue gas analyzer, a portable temperature and pressure flow analyzer, a portable hygrometer and other equipment, and when comparison and test are carried out on site, because each data of sampling and measurement is dispersed, manual recording on site is needed, in addition, environmental protection data needs to be converted to meet comparison requirements, so that a measurement process is easily influenced by human interference factors, and reliability, accuracy and effectiveness of the monitoring data are easily influenced; in addition, the whole working process needs on-site sampling, off-line analysis and calculation, the comparison and measurement period is long, and an environmental protection department cannot obtain a real-time result when performing law enforcement on site, so that the inconvenience is brought to the law enforcement.
The chinese patent with an application publication date of 2019, 12 and 10, an application publication number of CN110554145A, a patent name of a device and a method for remotely detecting and calibrating an automatic smoke monitoring system discloses a technical scheme, which comprises: the controller is in remote communication connection with the dynamic dilution calibrator and is used for remotely controlling the dynamic dilution calibrator to provide standard gas for the automatic flue gas monitoring system; and the data receiver is used for remotely receiving the measurement result of the automatic flue gas monitoring system on the standard gas, and the controller is used for judging the working state of the automatic flue gas monitoring system according to the measurement result. The technical scheme can remotely control the valves of the dynamic dilution calibrator and the three-way electromagnetic valve through the controller and receive signals of the data receiver. Personnel do not need to arrive at the scene, and the process that the field law enforcement is changed from manual operation to automatic operation is realized.
The application publication date is 2019, 4 and 30, the application publication number is CN109696210A, and the patent name is that a Chinese patent of an environment monitoring system for a chemical plant and a using method discloses another technical scheme, and the Chinese patent comprises a data acquisition module, an environment monitoring module, a database, a cloud service platform, a warning module, an intelligent terminal and a data detection module, wherein the data acquisition module comprises a gas acquisition unit, a liquid acquisition unit and a solid particle acquisition unit, the environment monitoring module comprises a temperature monitoring unit, a humidity monitoring unit, a smoke monitoring unit and a dust monitoring unit, and the data detection module comprises an operation detection unit and a positioning detection unit; the system can monitor the humiture, smoke composition, dust concentration, gas composition, solid particle and the liquid data after sewage treatment inside the chemical plant and outside the plant area respectively, can detect the running state and the location of the data acquisition equipment and the data monitoring equipment, and can know the environmental condition of the chemical plant in time.
However, the above technical solutions all perform analysis through a remote service platform when performing data monitoring and analysis, and law enforcement personnel still cannot obtain real-time data and results when performing law enforcement on site.
Disclosure of Invention
1. Problems to be solved
Aiming at the problem that the flue gas monitoring data in the prior art cannot obtain a real-time result, the invention provides a portable flue gas monitoring data acquisition system, a portable flue gas monitoring data acquisition device and a portable flue gas monitoring data acquisition method based on 5G communication.
2. Technical scheme
In order to solve the problems, the technical scheme adopted by the invention is as follows: a portable flue gas monitoring data acquisition system based on 5G communication comprises a data acquisition module, a data display and processing module and a data communication module, wherein the data acquisition module is used for acquiring signals of one or more instruments of a temperature instrument, a humidity instrument, a current meter, a pressure instrument, a smoke dust instrument and a gas analyzer; the collected signals are transmitted to the data display and processing module through the data communication module, the data display and processing module processes the received signals to obtain processed data, the processed data are compared with preset parameters to obtain monitoring results, the monitoring results are transmitted to the cloud platform or the environment-friendly monitoring center through the data communication module, and the data communication module is a 5G data communication module. According to the technical scheme, pollutants discharged on site can be monitored, monitoring results are obtained on site, and meanwhile, the monitoring results can be uploaded to an environment-friendly monitoring center or a cloud platform, so that the environment-friendly working personnel can conveniently perform law on site.
Furthermore, the system also comprises a network camera, and the data acquisition module transmits the acquired video signal of the network camera to the data display and processing module. According to the technical scheme, the on-site environment-friendly law enforcement situation can be collected through the network camera, so that the on-site law enforcement situation of environment-friendly workers can be recorded, and the situation can be used as a basis when disputes occur.
And the data display and processing module transmits the received signals, the processed data and the monitoring result to the display screen. The technical scheme can display the real-time data (including the field video) and the monitoring result acquired on the field on the display screen, so that the law enforcement is transparent and publicized.
The invention also comprises a portable smoke monitoring data acquisition device based on 5G communication, which comprises a case, wherein a data acquisition module, a data display and processing module and a data communication module are arranged in the case, and the data acquisition module is used for acquiring signals of one or more instruments of a temperature instrument, a humidity instrument, a flow velocity instrument, a pressure instrument, a smoke dust instrument and a gas analyzer; the collected signals are transmitted to the data display and processing module through the data communication module, the data display and processing module processes the received signals to obtain processed data, the processed data are compared with preset parameters to obtain monitoring results, the monitoring results are transmitted to the cloud platform or the environment-friendly monitoring center through the data communication module, and the data communication module is a 5G data communication module.
Furthermore, the data display and processing module is realized by adopting an industrial personal computer unit, and an industrial personal computer panel is arranged on the case and used for receiving an input reference value or modifying a preset reference value.
Furthermore, a plurality of interface terminals are arranged on the case, and one or more of a temperature meter, a humidity meter, a flow rate meter, a pressure meter, a smoke dust meter and a gas analyzer realizes signal transmission with the data acquisition module through the interface terminals.
The invention also comprises a portable flue gas monitoring data acquisition method based on 5G communication, which comprises the following steps:
s1, the data acquisition module acquires signals of one or more devices of a temperature meter, a humidity meter, a current meter, a pressure meter, a smoke dust meter and a gas analyzer;
s2, the data display and processing module receives the signals collected by the data collection module, processes the received signals to obtain a conversion value, and compares the conversion value with preset parameters to obtain a monitoring result;
and S3, the data communication module is used for uploading the monitoring result to a cloud platform or an environment-friendly monitoring center, and the data communication module is a 5G data communication module.
Further, the step of calculating the reduced value in step S2 is:
s21, converting each signal data acquired by the data acquisition module into pollutant working condition concentration, wherein the pollutant working condition concentration is the pollutant mass concentration mean value measured every minute;
s22, converting the working condition concentration into the dry concentration of the pollutant,
s23, obtaining the converted concentration C of the pollutant according to the dry concentration of the pollutantFolding device，
In the formula: alpha is the actually measured excess air factor;
αsthe standard excess air coefficient of the industry in the emission standard of pollution sources;
Csn trunkThe dry concentration of contaminants is indicated.
Further, the contaminant is labeled dry concentration
Wherein, Csn trunkLabeling the contaminant concentration on a dry basis; cWetIs the pollutant moisture concentration; xswIs the absolute humidity of the flue gas.
Further, the standard condition concentration of the pollutants
Wherein:Csnis the standard condition concentration of the pollutants;
Bathe atmospheric environmental pressure value is a monitoring point atmospheric environmental pressure value;
Psthe static pressure value of the flue gas is a monitoring point;
tsthe smoke temperature value is a monitoring point;
if the measured working condition concentration is a standard value, Csn＝Csn trunk；
If the measured working condition concentration is a wet base value, Csn＝CWet。
3. Advantageous effects
Compared with the prior art, the invention has the beneficial effects that:
(1) the invention can realize real-time acquisition and monitoring of portable measuring equipment compared on site, and upload the acquired signals to the cloud platform through the communication module, so that the environmental protection law enforcement departments can remotely monitor and judge the validity of the site test data of third-party personnel in real time;
(2) the invention can send the complete video of the on-site comparison test process to the environmental protection law enforcement department through network monitoring, and carry out the whole-process supervision on the test points of on-site sampling, the equipment of comparison test, the testing personnel and the whole operation process, thereby improving the environmental protection supervision;
(3) the invention effectively overcomes the defects of large man-made interference, poor quality control and long period in the measurement process in an 'online measurement + offline analysis' mode, and the like, and when the on-site comparison measurement is finished, an environmental protection department can remotely provide a test comparison report, judge the validity and reliability of on-site CEMS monitoring data, and improve the working efficiency.
Drawings
FIG. 1 is an internal schematic of the present invention;
FIG. 2 is a functional framework diagram of the present invention;
FIG. 3 is a flow chart of the present invention;
FIG. 4 is a schematic diagram of the structure of the apparatus of the present invention;
FIG. 5 is an analog interface 4-20mA input interface circuit of the present invention;
FIG. 6 is a 0-5V input interface circuit of the analog interface of the present invention;
FIG. 7 is a RS232 interface circuit of the present invention;
FIG. 8 is an RS485 interface circuit of the present invention;
FIG. 9 is a 9-36VDC to 5V power supply circuit of the present invention;
FIG. 10 is a circuit diagram of the 5V to 3.3V power supply of the present invention;
FIG. 11 is a main control circuit diagram of the present invention;
FIG. 12 is a circuit for switching between a mains power supply and a power supply battery according to the present invention;
wherein, in fig. 4: 1: an industrial personal computer panel; 2: a switch; 3: an interface terminal; 4: cabinet
Detailed Description
The invention is further described with reference to specific examples.
The invention comprises a portable flue gas monitoring data acquisition system, a device and a method based on 5G communication, which are used for monitoring flue gas pollutants, wherein the portable flue gas monitoring data acquisition system based on 5G communication comprises a data acquisition module, a data display and processing module and a data communication module, wherein the data acquisition module is used for acquiring signals of a temperature instrument, a humidity instrument, a current meter, a pressure instrument, a smoke dust instrument, a gas analyzer and an external power supply battery SO as to obtain the temperature, the humidity, the pressure, the current speed, the smoke dust volume and concentration of gas to be measured and SO in the gas pollutants2Concentration, NO concentration, O2Information such as concentration and voltage value of an external power supply battery; modbus is a serial communication protocol published in 1979 by Modicon corporation for communication by using a Programmable Logic Controller (PLC). Modbus has become an industry standard (De factor) of the communication protocol in the industrial field and is a common connection mode between industrial electronic equipment at present) acquires information acquired by the data acquisition module and transmits the information to the data acquisition module through an RS485 interfaceThe gas detection device is displayed on a display screen, so that monitoring personnel can intuitively know various indexes of the gas to be detected; meanwhile, the data display and processing module processes and calculates the information, compares the information with preset parameters in the system and outputs monitoring results, such as qualified information, standard exceeding information and the like, so that monitoring personnel can conveniently determine the monitoring results on site; the data communication module is used for uploading data acquired in real time and data of comparison results to a cloud platform or an environment-friendly monitoring center, and the data communication module in the embodiment is a 5G data communication module. The parameters preset in the system are values set according to relevant standards of national environmental protection departments, and the monitoring results can be output on site by comparing the values monitored on site with the parameters.
More specifically, as shown in fig. 2, the portable flue gas monitoring data acquisition system based on 5G communication includes a data acquisition module, a data display and processing module and a data communication module, the data acquisition module is used for acquiring temperature, humidity, pressure, and flow rate signals, signals of the smoke instrument and the gas analyzer, video signals, and state parameter signals such as battery voltage, the data display and processing module is used for displaying the signal data (i.e. each variable value acquired in real time) acquired by the data acquisition module in real time, and processing the signal data acquired in real time, specifically, calculating and converting the signal data to obtain a converted value, and then comparing the converted value with the parameter to output a monitoring result. It should be noted that the parameters or reference values required for comparison are preset in the system, and before field monitoring, parameters need to be set according to the field conditions, because the component parameters of different field tests are different, configuration needs to be performed according to the actual conditions, and the parameter setting of the user can be received through the data display and processing module. In addition, different from other monitoring, the monitoring of the smoke dust needs to be carried out after the collection of the smoke dust is finished and the weighing is carried out, so that a data display and processing module needs to receive manual input parameters, namely the concentration calculation is carried out after the weight of the smoke dust input by a user needs to be received; the data display and processing module can also store the signal data, the conversion value and the comparison result which are collected in real time, and the data display and processing module can also be connected with a printer to print the signal data, the conversion value and the comparison result (namely the monitoring result) which are collected in real time.
The data acquisition module finishes the collection to flow meter, hygrometer, gas analysis appearance, smoke and dust appearance, battery voltage and the inside state quantity of equipment in 1 cycle, sends the data of gathering simultaneously to industrial computer unit. The program flow chart is shown in fig. 3.
The data communication module mainly adopts a ModBus protocol and an MQTT (Message Queuing technical Transport, Message Queuing transmission and detection) protocol, acquires data information acquired by the data acquisition module through the ModBus protocol, and uploads the data to a cloud platform or an environmental monitoring center through the MQTT protocol.
In specific implementation, the data display and processing module is mainly realized on the basis of an industrial personal computer unit on hardware, and can complete the processes of data display, data processing, data storage and data uploading of the whole system. The operation in the specific use is as follows:
(1) newly building a project of the test task;
(2) inputting information of personnel participating in the test and position and working condition information of the test point in the project;
(3) setting a test time period of the comparison test;
(4) and after the comparison test is finished, confirming the end of the comparison test task.
Firstly, modbus communication is carried out through an RS485 interface and a data acquisition module to acquire temperature T, pressure P, flow velocity v, humidity X and gas pollutant SO detected by a gas analyzer acquired by the data acquisition module2Concentration C (SO2), NO concentration C (NO), oxygen concentration C (O)2) Data information such as the volume V of the smoke dust and the voltage of the battery, and the like, stores real-time data and can be directly displayed on a display screen.
Secondly, the acquired data are calculated, and the acquired data need to be calculated into a clock mean value, namely working condition concentration, because the field measured value is a minute mean value comparison.
The data display and processing module processes and calculates the information acquired by the data acquisition module as follows:
since the on-site comparison value is a minute mean value, that is, the reference value for on-site comparison is a minute mean value, and if the on-site monitoring value needs to be compared with the parameters, the on-site monitoring value needs to be unified into a minute mean value, the acquired data needs to be calculated into a clock mean value, that is, a working condition concentration
The specific conversion process is as follows:
wherein:
measuring the mass concentration mean value of the pollutants in minutes;
CQimeasuring the instantaneous value of the mass concentration of the pollutants every second;
n is the number of effective data for measuring the instantaneous value of the mass concentration of the pollutants in minutes; (n is an integer, n.gtoreq.12)
Calculating the working condition concentration of each pollutant through the above
Finally calculating the reduced concentration C required by environmental protectionFolding deviceAnd the working condition concentration is required to be adjusted
Converted into standard condition concentration CsnStandard condition concentration CsnConversion to standard dry concentration Csn trunkFinally converted into CFolding device。
Wherein: csnIs the standard condition concentration of the contaminant;
Bathe atmospheric environmental pressure value is a monitoring point atmospheric environmental pressure value;
Psthe static pressure value of the flue gas is a monitoring point;
tsthe smoke temperature value is a monitoring point;
if the measured working condition concentration is a standard value, Csn＝Csn trunk；
If the measured working condition concentration is a wet base value, Csn＝CWet；
The standard dry value is the value of dry smoke in a standard state, the wet base value is the value of smoke containing actual moisture, and the conversion formula of the dry base concentration and the humidity concentration of pollutants is as follows:
in the formula: csn trunkLabeling the contaminant dry concentration;
CwetIs the pollutant moisture concentration;
Xswabsolute humidity of flue gas;
the reduced concentrations of contaminants were:
in the formula: alpha is the actually measured excess air factor;
αsthe standard excess air coefficient of the industry in the emission standard of pollution sources;
actual measured excess air ratio:
in the formula: cVO2 dryIs the volume concentration of the oxygen content in the discharged flue gas on a dry basis.
Obtaining the converted concentration C of the pollutantsFolding deviceThereafter, the contaminant is converted to a concentration CFolding deviceAnd comparing the reference value with the monitoring result and outputting the monitoring result.
Finally, the system sets a sampling time period T according to the newly-built project and the input position information and personnel information of the measuring point0The acquired real-time data is converted into a minute mean value and a reduced value (also called a reduced concentration) through the algorithm, the minute mean value and the reduced concentration are compared with a stored reference value to obtain a monitoring result, the real-time data, the reduced concentration and the monitoring result are stored according to a certain format, historical inquiry and printing are facilitated, and meanwhile, the acquired real-time data, the collected reduced concentration and the collected monitoring result are uploaded to a cloud platform or an environment-friendly monitoring center through a 5G network by utilizing an MQTT protocol.
The invention also comprises a portable flue gas monitoring data acquisition method based on 5G communication, which specifically comprises the following steps:
(1) the data acquisition module is used for acquiring various information of a monitoring site, such as information of a temperature meter, a humidity meter, a current meter, a pressure meter, a smoke dust meter, a gas analyzer, an external power supply battery and the like, SO as to obtain the temperature, the humidity, the current rate, the pressure, the smoke dust volume and concentration of the gas to be measured and SO in gas pollutants2Concentration, NO concentration, O2Concentration, voltage value of the external power supply battery, and the like.
(2) The data display and processing module receives the information collected by the data collection module, processes and displays the received information, and specifically comprises the following steps: the data display and processing module carries out ModBus communication through the RS485 interface and the data acquisition module to acquire information acquired by the data acquisition module and displays the information on a display screen, so that monitoring personnel can visually know various indexes of the gas to be detected; meanwhile, the data display and processing module processes the information, compares the processed information with a preset reference value in the system and outputs monitoring results, such as qualified information, standard exceeding information and the like, so that monitoring personnel can determine the monitoring results on site conveniently; the reference value or parameter preset in the system is a numerical value set according to the relevant standard of the national environmental protection department, and the monitoring result can be output on site by comparing the numerical value monitored on site with the reference value.
(3) The data communication module is used for uploading the signals and the monitoring results acquired in real time to a cloud platform or an environment-friendly monitoring center so as to be convenient for timely checking.
The invention also comprises a portable smoke monitoring data acquisition device based on 5G communication, as shown in figure 4, the portable smoke monitoring data acquisition device comprises a case 4, an industrial personal computer panel 1, a switch 2 and an interface terminal 3 are arranged on the case 4, when the portable smoke monitoring data acquisition device is implemented, the case 4 is integrally molded by ABS type high-impact-resistance firm engineering plastics, flat elastic foaming sealing rubber strips are adopted at the upper part and the lower part of the seal of the case body, the waterproof and the air tightness of the case body are ensured, the working temperature of the case 4 is-40-80 ℃, certain temperature cold and heat can be resisted, and the portable smoke monitoring data acquisition device can also work normally under the condition of severe weather. The industrial computer panel 1 that sets up on machine case 4 is convenient for manual operation, if carry out parameter selection or input parameter etc. switch 2 is used for opening or closing this device, and interface terminal 3 includes a plurality of interface for equipment such as connection temperature appearance, manometer, smoke and dust appearance and gas analysis appearance, can also reserve the interface simultaneously, in order to satisfy the signal access of other equipment. The case 4 is internally provided with a data acquisition module, a power supply module, a 5G communication module and an industrial personal computer unit, as shown in fig. 1, the data acquisition module is used for acquiring signals of a current meter, a humidity meter, a smoke dust meter and a gas analyzer, and during specific implementation, the data acquisition module can also comprise signals of other measuring facilities such as a temperature meter and a pressure meter. The data acquisition module adopts MSP430F5438 as a main control chip, and the circuit comprises an analog quantity interface circuit (4-20mA/0-5V), an RS232 circuit, an RS485 circuit, a power supply circuit, a main control circuit and the like. The analog interface circuit (4-20mA/0-5V) mainly completes the acquisition of analog signals of the current meter and the humidity meter, and the specific interfaces are shown in fig. 5 and fig. 6, wherein fig. 5 is a 4-20mA input interface circuit, and fig. 6 is a 0-5V input interface circuit. The RS232 interface circuit realizes communication between the data acquisition module and the industrial personal computer unit, and sends data acquired by the data acquisition module to the industrial personal computer unit for processing, and a specific circuit diagram is shown in figure 7. The RS485 interface circuit is mainly used for collecting data of the gas analyzer and the smoke dust meter, and a specific circuit diagram is shown in figure 8. The power circuit mainly converts input 9-36VDC voltage into 5V and 3.3V, and specific circuit diagrams are shown in figures 9 and 10. Wherein, fig. 9 is a circuit for converting 9-36VDC voltage into 5V power supply, and fig. 10 is a circuit for converting 5V into 3.3V power supply. MSP430F5438 is used as a main control chip of the main control circuit, the chip can frequency-multiply to a system clock of 72MHz, and is provided with 12-path 12-bit ADC conversion circuits, wherein 8 paths of ADCs are used for collecting 4 paths of 4-20mA and 4 paths of 0-5V analog quantities, 4 UARTs are respectively used for 2 RS232 interfaces and 2 485 interfaces and are used for communicating with a flue gas analyzer and an industrial personal computer, and 3 timers can be used for signal collection and communication. The specific circuit diagram is shown in fig. 11.
The industrial computer unit is in communication connection with the data acquisition module, receives signal data collected by the data acquisition module, processes the received signal data, compares the received signal data with a preset reference value in a system, and outputs a monitoring result, such as qualified information, overproof information and the like, and simultaneously, the industrial computer unit is also in communication connection with the network camera, the display screen and the 5G communication module, the industrial computer unit displays the shot video information on the display screen by the received network camera, and meanwhile, the monitoring result and the video information can be uploaded to the cloud platform or the environment-friendly monitoring center through the 5G communication module, so that the environment-friendly monitoring center can remotely know the field monitoring condition. During concrete implementation, the industrial personal computer unit can also be connected with a printer, the USB interface connection can be set through the specific industrial personal computer unit, the site smoke monitoring result can be printed through the printer by site monitoring personnel in real time, and the site law enforcement of the environment-friendly monitoring personnel is facilitated.
During specific implementation, the industrial personal computer unit selects a RISC microprocessor (Reduced Instruction Set computer, Reduced Instruction Set Computing RISC) with the main frequency of 800MHz, the RISC microprocessor has rapid data processing and transmission capability, the display screen can adopt a touch display screen, the specific touch display screen can select a 4.3-inch LED screen with the resolution of 480 x 273 pixels, and the touch screen panel is a 4-wire precision resistance network. The touch display screen can carry out human-computer interaction, can carry out the project (project) of newly-built test, inputs the basic information of project, the sampling quality of smoke and dust, combines the flue gas volume data who obtains, can calculate under the standard condition and under the operating mode volume concentration.
The industrial personal computer unit in the embodiment is provided with a 128M flash memory and a 64M internal memory, is used for storing measured and converted data, and is provided with 1 RS232 interface, 1 485 interface, 2 USB interfaces and 1 Ethernet port. And the RS232 serial port is used for communicating with the data acquisition unit, the RJ45 Ethernet port is used for communicating with the network camera, and the RS485 port is used for communicating with the 5G communication module.
In specific implementation, the power supply mode of the invention can be two power supply modes of a commercial power supply and a lithium battery, and the two power supply modes can be switched. When detecting that the commercial power supplies power, automatically switching the commercial power to supply power, otherwise, adopting a lithium battery to supply power. The lithium battery is packaged by a 18650 battery pack, the standard voltage is 24.4VDC, the charging voltage is 25.2VDC, the battery capacity is 5200mAH, and the continuous operation of the device can be ensured for more than 8 hours. When the lithium battery is fully charged, the lithium battery can directly supply power; when the lithium battery is low in electric quantity, the lithium battery can be charged and the system can be powered by the power adapter. The lithium battery and the external mains supply switching circuit are shown in fig. 12.
The 5G communication module is realized by adopting a 5G industrial router, supports a 5G network, and is provided with 2 paths of kilomega network ports, 1 path of RS232 interface and 1 path of RS485 interface, wherein the RS485 interface is used for carrying out serial port communication with the industrial personal computer unit; meanwhile, data collected and calculated in real time are uploaded to a cloud platform or an environment-friendly monitoring center through a 5G wireless network by applying an MQTT communication protocol.
The printer adopts a USB interface to communicate with the industrial personal computer unit, and prints data such as real-time measurement values, conversion values, monitoring results and the like according to a specified data table, so that the efficiency and the strength of on-site environmental protection supervision are improved.
It should be noted that, in the present invention, the information and the signal both represent signals sent by devices such as a temperature meter, a humidity meter, a flow rate meter, a pressure meter, a smoke dust meter, a gas analyzer, etc., and the signals are collected by the information collection module and processed by the data display and processing module.
Claims (10)
1. The utility model provides a based on portable flue gas monitoring data acquisition system of 5G communication which characterized in that: the device comprises a data acquisition module, a data display and processing module and a data communication module, wherein the data acquisition module is used for acquiring signals of one or more instruments of a temperature instrument, a humidity instrument, a current meter, a pressure instrument, a smoke instrument and a gas analyzer; the collected signals are transmitted to the data display and processing module through the data communication module, the data display and processing module processes the received signals to obtain processed data, the processed data are compared with a preset reference value to obtain a monitoring result, the monitoring result is transmitted to the cloud platform or the environment-friendly monitoring center through the data communication module, and the data communication module is a 5G data communication module.
2. The portable flue gas monitoring data acquisition system based on 5G communication of claim 1, wherein: the system also comprises a network camera, and the data acquisition module transmits the acquired video signal of the network camera to the data display and processing module.
3. The portable flue gas monitoring data acquisition system based on 5G communication of claim 2, wherein: the data display and processing module transmits the received signals, the processed data and the monitoring result to the display screen.
4. The utility model provides a based on portable flue gas monitoring data collection system of 5G communication which characterized in that: the device comprises a case, wherein a data acquisition module, a data display and processing module and a data communication module are arranged in the case, and the data acquisition module is used for acquiring signals of one or more instruments of a temperature instrument, a humidity instrument, a flow velocity instrument, a pressure instrument, a smoke dust instrument and a gas analyzer; the collected signals are transmitted to the data display and processing module through the data communication module, the data display and processing module processes the received signals to obtain processed data, the processed data are compared with a preset reference value to obtain a monitoring result, the monitoring result is transmitted to the cloud platform or the environment-friendly monitoring center through the data communication module, and the data communication module is a 5G data communication module.
5. The portable smoke monitoring data acquisition device based on 5G communication according to claim 4, characterized in that: the data display and processing module is realized by adopting an industrial personal computer unit, and an industrial personal computer panel is arranged on the case and used for receiving an input reference value or modifying a preset reference value.
6. The portable smoke monitoring data acquisition device based on 5G communication according to claim 4, characterized in that: the case is provided with a plurality of interface terminals, and one or more of a temperature meter, a humidity meter, a flow rate meter, a pressure meter, a smoke dust meter and a gas analyzer realizes signal transmission through the interface terminals and the data acquisition module.
7. A portable flue gas monitoring data acquisition method based on 5G communication is characterized in that: the method comprises the following steps:
s1, the data acquisition module acquires signals of one or more devices of a temperature meter, a humidity meter, a current meter, a pressure meter, a smoke dust meter and a gas analyzer;
s2, the data display and processing module receives the signals collected by the data collection module, processes the received signals to obtain a conversion value, and compares the conversion value with a reference value to obtain a monitoring result;
and S3, the data communication module is used for uploading the monitoring result to a cloud platform or an environment-friendly monitoring center, and the data communication module is a 5G data communication module.
8. The portable flue gas monitoring data acquisition method based on 5G communication according to claim 7, wherein: the step of calculating the reduced value in step S2 is:
s21, converting each signal data acquired by the data acquisition module into pollutant working condition concentration, wherein the pollutant working condition concentration is the pollutant mass concentration mean value measured every minute;
s22, converting the working condition concentration into the dry concentration of the pollutant,
s23, obtaining the conversion value of the pollutants according to the dry concentration of the pollutantsConcentration CFolding device，
In the formula: alpha is the actually measured excess air factor;
αsthe standard excess air coefficient of the industry in the emission standard of pollution sources;
Csn trunkThe dry concentration of contaminants is indicated.
9. The portable flue gas monitoring data acquisition method based on 5G communication according to claim 8, characterized in that: the dry concentration of the contaminant
Wherein, Csn trunkLabeling the contaminant concentration on a dry basis; cWetIs the pollutant moisture concentration; xswIs the absolute humidity of the flue gas.
10. The portable flue gas monitoring data acquisition method based on 5G communication according to claim 9, characterized in that: standard condition concentration of the pollutants
Wherein: csnIs the standard condition concentration of the pollutants;
Bathe atmospheric environmental pressure value is a monitoring point atmospheric environmental pressure value;
Psthe static pressure value of the flue gas is a monitoring point;
tsthe smoke temperature value is a monitoring point;
if the measured working condition concentration is a standard value, Csn＝Csn trunk；
If the measured working condition concentration is a wet base value, Csn＝CWet。
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