CN111735909B - Characteristic pollutant environment monitoring system - Google Patents
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- CN111735909B CN111735909B CN202010483186.6A CN202010483186A CN111735909B CN 111735909 B CN111735909 B CN 111735909B CN 202010483186 A CN202010483186 A CN 202010483186A CN 111735909 B CN111735909 B CN 111735909B
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- 238000012544 monitoring process Methods 0.000 title claims abstract description 49
- 239000003344 environmental pollutant Substances 0.000 title abstract description 12
- 231100000719 pollutant Toxicity 0.000 title abstract description 12
- 238000001514 detection method Methods 0.000 claims abstract description 62
- 238000009434 installation Methods 0.000 claims abstract description 10
- 238000000034 method Methods 0.000 claims abstract description 8
- 238000005070 sampling Methods 0.000 claims description 27
- 238000012795 verification Methods 0.000 claims description 27
- 239000000356 contaminant Substances 0.000 claims description 13
- 230000005540 biological transmission Effects 0.000 claims description 10
- 238000004891 communication Methods 0.000 claims description 6
- 238000004804 winding Methods 0.000 claims description 2
- 238000012423 maintenance Methods 0.000 abstract description 7
- 230000008569 process Effects 0.000 abstract description 3
- 229910000831 Steel Inorganic materials 0.000 abstract description 2
- 239000010959 steel Substances 0.000 abstract description 2
- 230000007613 environmental effect Effects 0.000 description 14
- 238000010586 diagram Methods 0.000 description 10
- 238000007781 pre-processing Methods 0.000 description 4
- 230000002035 prolonged effect Effects 0.000 description 4
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- 238000010276 construction Methods 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000007791 dehumidification Methods 0.000 description 1
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- 230000000694 effects Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 230000008713 feedback mechanism Effects 0.000 description 1
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- 238000010438 heat treatment Methods 0.000 description 1
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- 238000012545 processing Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
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- 239000004065 semiconductor Substances 0.000 description 1
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- 239000000126 substance Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Abstract
The invention discloses a characteristic pollutant environment monitoring system which comprises a shell, a control unit, a detection unit, a power supply unit, a pretreatment unit and an antenna, wherein an inner cavity of the shell adopts a three-layer installation structure, the control unit, the detection unit and the power supply unit are respectively and sequentially arranged on the three-layer installation structure from top to bottom, the pretreatment unit and the antenna are arranged at the top of the shell, the pretreatment unit is communicated with an air inlet of the shell, the shell is an indeterminate steel shell and has a power-off/incoming-call alarm function, when power is off in the running process of equipment, the equipment state can be remotely judged, the equipment has a low power consumption mode after power off, the capacity of prolonging the working time of the equipment is realized, the function of remote control of an independent instruction set is realized, maintenance and disassembly are realized, the internal components of the equipment are in a module form, the maintenance is convenient, and the maintenance cost is reduced.
Description
Technical Field
The invention relates to the technical field of factory environment monitoring, in particular to a characteristic pollutant environment monitoring system.
Background
The environmental pollution events such as water, gas, noise and the like in different degrees appear in each region while the local economy develops rapidly, so that the life quality of people is seriously influenced, and the sustainable development of the local economy is hindered. The environmental protection method is characterized in that the environmental protection method comprises the steps of setting up environmental protection policies and regulations in different areas of China, setting up environmental quality monitoring ground stations in different areas, and carrying out comprehensive analysis on various reasons such as geography, weather, environmental derivation and the like, wherein the environmental protection policies and regulations are set up in the country, the environmental management in the direct jurisdiction of each level of local government is increasingly important, the investment force on environmental monitoring is increased, the environmental quality monitoring ground stations are sequentially planned and installed in each area, and the accurate decision and quick response of the atmospheric pollution management can be realized only by accurately finding out the emission sources of local pollutants and comprehensively analyzing various reasons such as geography, weather and environmental derivation.
At present, environmental monitoring is increasingly important, but the construction of a plurality of basic detection devices is very weak, manual supervision mode and video grid monitoring are difficult to provide accurate monitoring data, and a breakthrough is needed in the aspect of refinement in the next step. The traditional automatic air quality monitoring station consists of large-scale equipment, a station house needs to be built for installation, and meanwhile, a small maintenance cost is required to be paid every year.
Many domestic places make beneficial attempts to atmosphere gridding monitoring, but the problems of incomplete coverage and monitoring elements, low informatization level, unsound combination of monitoring and supervision, to-be-improved monitoring data quality and the like exist, and the atmospheric pollution control requirement is difficult to meet. To this end, we propose a characteristic contaminant environmental monitoring system.
Disclosure of Invention
The invention provides a characteristic pollutant environment monitoring system, which aims to realize wide distribution by adopting a point source type factory boundary environment monitoring miniature station with low equipment cost, convenient electricity utilization (power supply by solar energy), easy installation and capability of meeting the current market demand.
In order to achieve the technical purpose and the technical effect, the invention is realized by the following technical scheme:
The characteristic pollutant environment monitoring system comprises a shell, a control unit, a detection unit, a power supply unit, a pretreatment unit and a server, wherein the inner cavity of the shell adopts a three-layer installation structure, the control unit, the detection unit and the power supply unit are respectively arranged on the three-layer installation structure from top to bottom in sequence, the pretreatment unit is arranged at the top of the shell, and the pretreatment unit is communicated with an air inlet of the shell;
the control unit comprises a DTU, a main control board and an antenna, wherein the antenna is positioned at the top of the shell, and the main control board, the antenna and the server are combined to form a monitoring control system;
the detection unit comprises a detection module and an air pump;
the power supply unit comprises an air switch, a lead storage battery and a switching power supply;
the pretreatment unit comprises a sampling tube and a filter.
Preferably, in the above characteristic pollutant environment monitoring system, the sampling tube, the filter, the detection module and the gas pump are combined into a gas collection system.
Based on the technical characteristics, the gas collection system is responsible for collecting surrounding environmental gas of the factory boundary and sending the surrounding environmental gas into equipment for detection, the air pump pumps the sample gas into the pretreatment unit, the flow of dehumidifying and impurity removing is carried out on the sample gas, the dried clean sample gas is sent into the detection module for detection, calculation and output of a gas concentration value, and then the sample gas is released into the environment.
Preferably, in the above-mentioned characteristic pollutant environment monitoring system, the switch power supply, the main control board, the lead storage battery, the detection module, the air pump and the DTU are combined to form the power supply system, switch power supply electrical output connects the main control board, main control board electrical property two-way connection lead storage battery, main control board electrical output connects detection module, air pump and DTU respectively.
Based on the technical characteristics, the power supply system is responsible for providing electric energy for normal operation of equipment, the normal operation state of the equipment adopts alternating current 220V power supply, after the power supply is converted into 14V direct current voltage through the switching power supply, the main control board provides power for the main control board, on the one hand, the main control board outputs 12V direct current voltage to the detection module, the air pump and the DTU, the normal operation state of the equipment is maintained, on the other hand, the lead storage battery is charged, when the external alternating current 220V power supply of the equipment is powered off, the lead storage battery can continuously maintain the normal operation of the subsequent equipment for a period of time through the output of 12V direct current voltage of the main control board, and when the electric quantity of the lead storage battery is too low, the alternating current 220V is powered off, the equipment stops working.
Preferably, in the above-mentioned characteristic contaminant environment monitoring system, the detection module is electrically connected with the DTU, the DTU is electrically connected with the antenna, the antenna signal output is connected with the server, and the detection module, the DTU, the antenna and the server are combined to form a data transmission system.
Based on the technical characteristics, the data transmission system is responsible for transmitting the data operated by the equipment to the server. The detection module outputs data through DTU (DataTransferunit) devices, the DTU transmits the data to a designated server through an antenna in a wireless mode, and a user can inquire the device data in the server.
Preferably, in the above-mentioned characteristic pollutant environment monitoring system, the detection module includes air chamber, signal board and pick-up plate, and air chamber, signal board and pick-up plate from bottom to top fixed mounting in proper order set up, built-in wind speed interface, wind direction interface, electric quantity monitoring interface, communication interface, signal acquisition board and air pump interface of pick-up plate.
Based on the technical characteristics, the gas detection module selects a STM32F103RCT6 microcontroller of an legal semiconductor as an operation core, monitors the air concentration of factory boundary in real time, transmits concentration data to a data transmission unit DTU through 485, embeds a wind speed and wind direction interface, an electric quantity monitoring interface, a communication interface, a signal acquisition board and an air pump interface, can simultaneously realize the functions of monitoring wind speed and wind direction data, equipment electric quantity condition, equipment power failure alarm and the like, outputs signals of wind speed and wind direction sensors to be 0-5V voltage values, divides the voltage signals to be between 0 and 3.3V through sampling resistors, enters an IO port of a singlechip through an operational voltage follower circuit, internally realizes AD sampling operation, calculates wind speed and wind direction values, and the electric quantity monitoring interface detects the working state of a switching power supply in real time, the singlechip can identify whether the external input power supply has voltage, whether the switching power supply outputs voltage, whether the battery charges and other information by judging the level state of the pin, the communication physical layer is connected with the data transmission unit DTU in a 485 mode, the data transmission unit DTU starts a transmission mode to transmit concentration data to the server through a GPRS network, 10 paths of AD acquisition ports are carried out on the board, 6 paths of signals are used for acquiring sensor voltage signals from the signal acquisition board to carry out operation processing of the concentration data, 4 paths of signals are standby ports and are used for expansion use, the sampling pump is powered by 12V voltage, and the circuit is used for controlling the switching of the sampling pump so as to enter a low-power consumption mode when equipment is powered off and electric quantity is about to be exhausted, and the sampling pump is turned off, so that the working time of the equipment is prolonged.
Preferably, in the above-mentioned characteristic pollutant environment monitoring system, three groups of detection holes are sequentially formed in the top of the air chamber from left to right, and the sensor is installed in the detection hole, the air passage is formed in the bottom of the air chamber from left to right, and the air passage penetrates through the air chamber, and air crossing openings are symmetrically formed in the left and right sides of the air passage.
Based on the technical characteristics, the air chamber is used for fixing the sensor in a mold made of polytetrafluoroethylene materials, three sensor detection holes in the drawing are connected through an air path, sampling gas enters the sensor from the air path one by one and enters the sensor through the mold detection holes, and the sensor and the air chamber are fixed and then have to ensure sufficient tightness so as to prevent the accuracy of concentration data from being influenced by overflow of gaps between the sensor and the mold after the sampling gas enters the air path.
Preferably, in the above-mentioned characteristic pollutant environment monitoring system, a sampling tube is inserted at the bottom of the pretreatment unit, and the sampling tube extends to the top of the pretreatment unit, dustproof and waterproof air guide holes are formed in the outer wall of the top of the pretreatment unit, a heat tracing band is wound on the outer wall of the sampling tube, and is located in the inner cavity of the pretreatment unit, a filter is communicated with the bottom of the sampling tube, and the filter is located below the pretreatment unit.
Based on the technical characteristics, the whole process heat tracing is performed, the sample gas is collected without cold points, the distortion of the sample is avoided, the filter is used for removing dust impurities in the air, the purpose of improving the detection precision of equipment is achieved, the heat tracing belt is connected with 220V alternating current and then automatically heated, the heat tracing belt is wound around a pipeline, after the collected sample gas enters the gas circuit, the purpose of heating the gas for dehumidification is achieved, the filter is used for filtering impurities in the sample gas, and particles such as dust are prevented from entering the gas chamber to block the gas circuit and pollute the detection hole of the sensor.
Preferably, in the above characteristic contaminant environment monitoring system, the control method flow of the monitoring control system is as follows:
s1: establishing an independent instruction set (the format of the instruction set is TY+ instruction=permission code), and starting to read FLASH to acquire equipment parameters;
S2: whether an independent instruction set is received or not, if not, the user directly exits, and the next step is carried out;
s3: the packet head is instructed to check, whether the packet is directly withdrawn is judged to be the next step;
S4: checking the instruction, and if not, directly exiting, wherein the instruction is the next step;
S5: the authority level verification is divided into three levels of authority, namely primary authority, secondary authority and tertiary authority, if the authority is primary authority, authority code consistency verification is carried out, if the authority is primary authority, the authority code consistency verification is carried out, if the authority is secondary authority, the corresponding equipment is appointed, if the authority is secondary authority, the broadcast mode verification is carried out, if the authority is secondary authority, the broadcasting mode verification is carried out, if the authority is tertiary authority, the mode verification is carried out, if the authority is direct, the authority code consistency verification or the broadcast mode verification is carried out, and if the authority code consistency verification is carried out, the corresponding equipment is appointed;
s6: checking control parameters, and after the equipment responds, checking the control parameters;
S7: checking configuration parameters;
s8: finally storing into FLASH and exiting.
Preferably, in the above characteristic contaminant environment monitoring system, the parameters of the independent instruction set include configuration HJ/T212 protocol, modbus protocol parameters, and control or query device operation parameters.
Preferably, in the above-mentioned characteristic contaminant environment monitoring system, the sensor is electrically connected with a constant potential circuit in two directions, the sensor is electrically connected with a current-to-voltage circuit, the current-to-voltage circuit is electrically connected with a differential amplifying circuit, and the differential amplifying circuit is electrically connected with an AD acquisition circuit.
Based on the technical characteristics, the constant potential circuit provides stable reference voltage for the electrochemical sensor, so that the sensor can work normally, the sensor outputs a weak current signal, the current voltage is transferred through operational discharge, the reference voltage is removed through differential amplification, the signal quantity is amplified, and the amplified voltage signal is sent to AD acquisition of the singlechip to calculate the current voltage AD value.
The beneficial effects of the invention are as follows:
(1) The power-off/incoming call alarm function is provided, and when power is off in the running process of the equipment, the state of the equipment can be judged remotely.
(2) The power-off low-power consumption mode is provided, and the working time of equipment is prolonged.
(3) The remote control function of the independent instruction set is provided.
(4) The maintenance and disassembly are convenient, the internal components of the equipment are in a module form, the maintenance is convenient, and the maintenance cost is reduced.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are needed for the description of the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG.1 is a schematic diagram of the structure of the present invention;
FIG. 2 is a schematic diagram of a control unit according to the present invention;
FIG. 3 is a schematic diagram of a detecting unit according to the present invention;
FIG. 4 is a schematic diagram of a power unit according to the present invention;
FIG. 5 is a flow chart of the acquisition system of the present invention;
Fig. 6 is a flow chart of a transmission system of the present invention;
FIG. 7 is a schematic diagram of a detection module according to the present invention;
FIG. 8 is a schematic view of the structure of the air chamber of the present invention;
FIG. 9 is a schematic diagram of a pretreatment unit according to the present invention;
FIG. 10 is a flow chart of a control system of the present invention;
FIG. 11 is a block diagram of a driving circuit for sensor signal acquisition according to the present invention;
FIG. 12 is a circuit diagram of a potentiostatic circuit of the present invention;
FIG. 13 is a circuit diagram of a current-to-voltage circuit according to the present invention;
fig. 14 is a circuit diagram of a differential amplifying circuit of the present invention;
in the drawings, the list of components represented by the various numbers is as follows:
The device comprises a 1-shell, a 2-control unit, a 201-DUT, a 202-main control board, a 203-antenna, a 3-detection unit, a 301-detection module, a 3011-air chamber, a 3012-signal board, a 3013-detection board, a 3014-detection hole, a 3015-air circuit, a 3016-air port, a 302-air pump, a 4-power supply unit, a 401-air switch, a 402-lead storage battery, a 403-switching power supply, a 5-preprocessing unit, a 501-sampling pipe, a 502-filter, a 503-dustproof and waterproof air guide hole, a 504-heat tracing belt, a 6-antenna and a 7-server.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Referring to fig. 1-4, the present embodiment is a system for monitoring environment of characteristic contaminants, including a housing 1, a control unit 2, a detection unit 3, a power supply unit 4, a pre-processing unit 5 and a server 7, wherein an inner cavity of the housing 1 adopts a three-layer installation structure, the three-layer installation structure is sequentially provided with the control unit 2, the detection unit 3 and the power supply unit 4 from top to bottom, the top of the housing 1 is provided with the pre-processing unit 5, and the pre-processing unit 5 is communicated with an air inlet of the housing 1;
the control unit 2 comprises a DTU201, a main control board 202 and an antenna 6, the antenna 6 is positioned at the top of the shell 1, and the main control board 201, the antenna 6 and the server 7 are combined to form a monitoring control system;
the detection unit 3 comprises a detection module 301 and an air pump 302;
The power supply unit 4 includes an air switch 401, a lead storage battery 402, and a switching power supply 403;
The pretreatment unit 5 includes a sampling tube 501 and a filter 502.
Wherein, the sampling tube 501, the filter 502, the detection module 301 and the air pump 302 are combined to form a gas collection system.
The power supply system is formed by combining the switch power supply 403, the main control board 202, the lead storage battery 402, the detection module 301, the air pump 302 and the DTU201, wherein the switch power supply 403 is electrically output and connected with the main control board 202, the main control board 202 is electrically and bidirectionally connected with the lead storage battery 402, and the main control board 202 is electrically output and connected with the detection module 301, the air pump 302 and the DTU201 respectively.
The detection module 301 is electrically connected with the DTU201, the DTU201 is electrically connected with the antenna 6, the signal output of the antenna 6 is connected with the server 7, and the detection module 301, the DTU201, the antenna 6 and the server 7 are combined to form a data transmission system.
The detection module 301 comprises an air chamber 3011, a signal board 3012 and a detection board 3013, wherein the air chamber 3011, the signal board 3012 and the detection board 3013 are fixedly installed and arranged from bottom to top in sequence, and the detection board 3013 is internally provided with an air speed interface, an air direction interface, an electric quantity monitoring interface, a communication interface, a signal acquisition board and an air pump 302 interface.
Three groups of detection holes 3014 are sequentially formed in the top of the air chamber 3011 from left to right, sensors are installed in the detection holes 3014, an air passage 3015 is formed in the bottom of the air chamber 3011 from left to right, the air passage 3015 penetrates through the air chamber 3011, and air passage ports 3016 are symmetrically formed in the left side and the right side of the air passage 3015.
The bottom of pretreatment unit 5 has pegged graft sampling pipe 501, and sampling pipe 501 extends to the top of pretreatment unit 5, dustproof waterproof air vent 503 has been seted up to the top outer wall of pretreatment unit 5, the outer wall winding of sampling pipe 501 has the companion tropical 504, and companion tropical 504 is located the inner chamber of pretreatment unit 5, the bottom intercommunication of sampling pipe 501 has filter 502, and filter 502 is located the below of pretreatment unit 5.
Referring to fig. 10 in the drawings, the control method flow of the monitoring control system is as follows:
s1: establishing an independent instruction set (the format of the instruction set is TY+ instruction=permission code), and starting to read FLASH to acquire equipment parameters;
S2: whether an independent instruction set is received or not, if not, the user directly exits, and the next step is carried out;
s3: the packet head is instructed to check, whether the packet is directly withdrawn is judged to be the next step;
S4: checking the instruction, and if not, directly exiting, wherein the instruction is the next step;
S5: the authority level verification is divided into three levels of authority, namely primary authority, secondary authority and tertiary authority, if the authority is primary authority, authority code consistency verification is carried out, if the authority is primary authority, the authority code consistency verification is carried out, if the authority is secondary authority, the corresponding equipment is appointed, if the authority is secondary authority, the broadcast mode verification is carried out, if the authority is secondary authority, the broadcasting mode verification is carried out, if the authority is tertiary authority, the mode verification is carried out, if the authority is direct, the authority code consistency verification or the broadcast mode verification is carried out, and if the authority code consistency verification is carried out, the corresponding equipment is appointed;
s6: checking control parameters, and after the equipment responds, checking the control parameters;
S7: checking configuration parameters;
s8: finally storing into FLASH and exiting.
Parameters of the independent instruction set include configuration HJ/T212 protocol, modbus protocol parameters, and control or query device operating parameters.
The sensor is electrically connected with a constant potential circuit in a two-way manner, the sensor is electrically connected with a current-to-voltage circuit, the current-to-voltage circuit is electrically connected with a differential amplifying circuit, and the electrical output of the differential amplifying circuit is connected with an AD acquisition circuit.
The constant potential circuit uses an operational amplifier to design a negative feedback circuit, the voltages of the counter electrode and the reference electrode are consistent through a negative feedback mechanism, V ref is the reference electrode voltage, V e is the sensor reference voltage, and V cnt is the counter electrode voltage (see FIG. 12).
When V ref＜Ve, the output V cnt rises becauseV ref rises.
When V ref＞Ve, the output V cnt drops becauseV ref drops.
After the equilibrium has been reached, the equilibrium is reached,
The current-to-voltage circuit uses the characteristic that the input impedance of the operational amplifier is large and the output impedance is small, and is matched with a proper resistance value, so that the current can be converted into voltage, and the value of the voltage can be regulated (see fig. 13).
Let the output voltage be V sens, the sensor input current be I sens, then there is V sens＝Vref-R3×Isens
The output voltage V sens passes through the differential amplifying circuit through the current-to-voltage circuit, so that the reference voltage V ref used by the single power supply is eliminated, the final output voltage is started from 0, the output range is enlarged, and the accuracy of AD sampling is higher (see FIG. 14).
Let the input voltage be V sens and the output voltage be V out, then there are:
in the case of R 5＝R6,R4＝R7, the R,
V out＝N(Vsens-Vref)
Magnification factor
So V out＝N(Vsens-Vref) =0 at a gas concentration of 0.
To sum up, the sensor output current is I sens and the final output voltage is V out, if there is
Vout＝-N×R3×Isens
The invention is embodied in that the pretreatment unit 5 can treat moisture and dust in the gas, so that clean gas enters the detector, the service life of the sensor is prolonged, the equipment precision is ensured, the antenna 6 is a DTU transmission antenna, the DTU realizes reliable communication with the server through the antenna, the shell 1 is a stainless steel shell, the shell 1 made of indeterminate steel is more suitable for VOC detection instruments in a chemical industry park, corrosion of corrosive gas, rainfall and the like to the shell 1 is prevented, the service life of the equipment is prolonged, the detection unit 3 detects and transmits the gas, and the power supply unit 4 supplies power to the equipment.
In the description of the present specification, the descriptions of the terms "one embodiment," "example," "specific example," and the like, mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The preferred embodiments of the invention disclosed above are intended only to assist in the explanation of the invention. The preferred embodiments are not intended to be exhaustive or to limit the invention to the precise form disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and the practical application, to thereby enable others skilled in the art to best understand and utilize the invention. The invention is limited only by the claims and the full scope and equivalents thereof.
Claims (7)
1. A system for monitoring a characteristic contaminant environment, comprising: the device comprises a shell, a control unit, a detection unit, a power supply unit, a pretreatment unit and a server, wherein the inner cavity of the shell adopts a three-layer installation structure, the control unit, the detection unit and the power supply unit are respectively arranged on the three-layer installation structure from top to bottom in sequence, the top of the shell is provided with the pretreatment unit, and the pretreatment unit is communicated with an air inlet of the shell;
the control unit comprises a DTU, a main control board and an antenna, wherein the antenna is positioned at the top of the shell, and the main control board, the antenna and the server are combined to form a monitoring control system;
the detection unit comprises a detection module and an air pump;
the power supply unit comprises an air switch, a lead storage battery and a switching power supply;
The pretreatment unit comprises a sampling tube and a filter;
The detection module is electrically connected with the DTU, the DTU is electrically connected with the antenna, the antenna signal output is connected with the server, and the detection module, the DTU, the antenna and the server are combined to form a data transmission system;
the detection module comprises an air chamber, a signal board and a detection board, wherein the air chamber, the signal board and the detection board are sequentially and fixedly arranged from bottom to top, and a wind speed interface, a wind direction interface, an electric quantity monitoring interface, a communication interface, a signal acquisition board and an air pump interface are arranged in the detection board;
The bottom of pretreatment unit has pegged graft the sampling pipe, and the sampling pipe extends to the top of pretreatment unit, dustproof and waterproof air vent has been seted up to the top outer wall of pretreatment unit, the outer wall winding of sampling pipe has the companion tropical, and the companion tropical is located the inner chamber of pretreatment unit, the bottom intercommunication of sampling pipe has the filter, and the filter is located the below of pretreatment unit.
2. The characterized contaminant environment monitoring system of claim 1, wherein: the sampling tube, the filter, the detection module and the gas pump are combined into a gas collection system.
3. The characterized contaminant environment monitoring system of claim 1, wherein: the power supply system is formed by combining a switch power supply, a main control board, a lead storage battery, a detection module, an air pump and a DTU, wherein the switch power supply is electrically output and connected with the main control board, the main control board is electrically and bidirectionally connected with the lead storage battery, and the main control board is electrically output and connected with the detection module, the air pump and the DTU respectively.
4. The characterized contaminant environment monitoring system of claim 1, wherein: three groups of detection holes are sequentially formed in the top of the air chamber from left to right, sensors are installed in the detection holes, an air passage is formed in the bottom of the air chamber from left to right, the air passage penetrates through the air chamber, and air passage ports are symmetrically formed in the left side and the right side of the air passage.
5. The characterized contaminant environment monitoring system of claim 1, wherein: the control method flow of the monitoring control system is as follows:
S1: and establishing an independent instruction set, wherein the instruction set format is as follows: ty+ instruction=permission code, and starts to read FLASH to acquire equipment parameters;
S2: whether an independent instruction set is received or not, if not, the user directly exits, and the next step is carried out;
s3: the packet head is instructed to check, whether the packet is directly withdrawn is judged to be the next step;
S4: checking the instruction, and if not, directly exiting, wherein the instruction is the next step;
S5: the authority level verification is divided into three levels of authority, namely primary authority, secondary authority and tertiary authority, if the authority is primary authority, authority code consistency verification is carried out, if the authority is primary authority, the authority code consistency verification is carried out, if the authority is secondary authority, the corresponding equipment is appointed, if the authority is secondary authority, the broadcast mode verification is carried out, if the authority is secondary authority, the broadcasting mode verification is carried out, if the authority is tertiary authority, the mode verification is carried out, if the authority is direct, the authority code consistency verification or the broadcast mode verification is carried out, and if the authority code consistency verification is carried out, the corresponding equipment is appointed;
s6: checking control parameters, and after the equipment responds, checking the control parameters;
S7: checking configuration parameters;
s8: finally storing into FLASH and exiting.
6. The characterized contaminant environment monitoring system of claim 5, wherein: parameters of the independent instruction set include configuration HJ/T212 protocol, modbus protocol parameters, and control or query device operating parameters.
7. The characterized contaminant environment monitoring system of claim 4, wherein: the sensor is electrically connected with a constant potential circuit in a two-way manner, the sensor is electrically connected with a current-to-voltage circuit, the current-to-voltage circuit is electrically connected with a differential amplifying circuit, and the electrical output of the differential amplifying circuit is connected with an AD acquisition circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010483186.6A CN111735909B (en) | 2020-06-01 | Characteristic pollutant environment monitoring system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010483186.6A CN111735909B (en) | 2020-06-01 | Characteristic pollutant environment monitoring system |
Publications (2)
| Publication Number | Publication Date |
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| CN111735909A CN111735909A (en) | 2020-10-02 |
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