CN208420839U - A kind of factory's circle characteristic contamination continuous monitoring device - Google Patents
A kind of factory's circle characteristic contamination continuous monitoring device Download PDFInfo
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- CN208420839U CN208420839U CN201820771979.6U CN201820771979U CN208420839U CN 208420839 U CN208420839 U CN 208420839U CN 201820771979 U CN201820771979 U CN 201820771979U CN 208420839 U CN208420839 U CN 208420839U
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Abstract
The utility model discloses a kind of factory's circle characteristic contamination continuous monitoring device, and remote communication module is connected with the lightning protection device of closed noble gas discharge pipe；Detection module is connected with electrochemical sensor, photoion gas sensor and semiconductor transducer, and electrochemical sensor detects inorganic poison gas, and photoion gas sensor detects volatile organic compounds, and semiconductor transducer detects chloroform；Zero point correction module is connected with zero gas generating means, zero gas generating means by air hydrocarbon and inorganic compound concentration be down to sensor detection limit or less；Sampling module is connected with main sampler, and main sampler is equipped with fly net and filter；Preprocessing module is connected with steam separation assembly, purification assembly and valve island allocation component, and steam separation assembly is equipped with vacuum pump and drier；Valve island allocation component is connect with purification pipe.The utility model being capable of each enterprise's uncontrollable discharge of real-time monitoring factory circle concentration, accurate measurements regional environmental quality situation and variation tendency.
Description
Technical field
The utility model relates to environmental monitoring technology fields, and in particular to a kind of factory's circle characteristic contamination continuously monitors dress
It sets.
Background technique
Characteristic contamination refers to the peculiar pollutant in the pollutant of project discharge in addition to Conventional pollution.Refer mainly to project
It may cause potential pollution or the peculiar pollutant having an impact to environmental ambient air protection target after implementation.Characteristic contamination
It can show the pollution level of the industry, can generally be understood as discharging more pollutant from amount, in pharmaceutical industry
COD, BOD, ethyl alcohol, acetone etc., meaning is also since production technology, product are different in same industry can be different
, vehicle exhaust characteristic contamination is hydrocarbon, NO for another exampleXDeng.Tradition on-line monitoring the generally existing failure rate of equipment and
The higher hidden danger of outage rate not can guarantee authenticity, the completeness and efficiency of on-line monitoring data, be carried out based on wrong data
Analysis will deviate reality, cause decision inaccurate.
Utility model content
The purpose of this utility model is to provide a kind of factory's circle characteristic contamination continuous monitoring device, can real-time monitoring it is each
Uncontrollable discharge factory circle of enterprise concentration, accurate measurements regional environmental quality situation and variation tendency, auxiliary diagnosis process units
Abnormal conditions handle relevant abnormalities in time, provide timely early warning response for unexpected environmental accident and accurate data are supported, add
Strong corporate environment monitoring capability and promotion enterprise Environmental Management are horizontal.
To achieve the above object, the technical solution of the utility model are as follows: a kind of factory's circle characteristic contamination continuous monitoring device,
The monitoring device includes microprocessor, touch-control module and power module, and the microprocessor is based in ARM Cortex-M3
Core, the touch-control module are connect with microprocessor, and the power module is connect with microprocessor, and the monitoring device further includes remote
Journey communication module, detection module, zero point correction module, sampling module and preprocessing module；The remote communication module with it is described
Microprocessor connection, remote communication module is communicated using GPRS or cable network communication, and remote communication module is connected with closed
The lightning protection device of formula noble gas discharge pipe；The detection module is connect with the microprocessor, and detection module at least connects
It is connected to electrochemical sensor, photoion gas sensor and semiconductor transducer, electrochemical sensor is used to detect inorganic poison gas,
Photoion gas sensor is detected for detecting volatile organic compounds, semiconductor transducer for chloroform；
The zero point correction module is connect with the microprocessor, and zero point correction module is connected with zero gas generating means, and zero
Gas generating means be used for by air hydrocarbon and inorganic compound concentration be down to sensor detection limit or less；It is described to adopt
Egf block connects the microprocessor, and sampling module is connected with main sampler, and the main sampler is equipped with fly net and filter；
The preprocessing module is connect with microprocessor, preprocessing module be connected with steam separation assembly, purification assembly and
Valve island allocation component, the steam separation assembly are equipped with vacuum pump and drier, connect between vacuum pump and drier through pipeline；
The purification assembly includes purification pipe, and the purification pipe includes at least TVOC and benzene, NH3With CO, SO2-HCL-NO2Three groups；It is described
Valve island allocation component is connect with the purification pipe.
The utility model purification assembly is had ready conditions under normal sample working condition participates in operation, can greatly prolong filtrate
In the service life, filtrate is effective during guaranteeing operation and maintenance, and maintenance time was at 3 months or more under normal circumstances.The Working mould of purification assembly
Formula is run according to microprocessor instruction, participates in system work under two conditions, first is during device is calibrated automatically, and second is
There are the gas duration of existences of serious cross reaction.Both conditions are work shape of the microprocessor according to all kinds of gas sensors
State and detection data are calculated, and the sending start command that imposes a condition is met.
The present apparatus is communicated using plug-in type GPRS or cable network communication, maintenance side of flexible choice communication system operator
Just.In the design, it by the network equipment for selecting to have High Reliability Design, reduces equipment failure rate and improves network reliability.
The reliability of equipment itself is to determine the principal element of whole network system reliability, and the utility model chooses Huawei 2G/3G/4G
Communication module group.DTU equipment has high reliability, is optimized by the anti-interference test of EMC in device hardware, Logistics networks reliability.
As the preferred of factory's circle characteristic contamination continuous monitoring device, the monitoring device further includes power module and touch-control
Module, the power module are connect with the microprocessor, and power module is connected with CSW65 AC-DC power supply and UPS is spare
Power supply；The touch-control module is connect with the microprocessor, and touch-control module is connected with touch screen.CSW6540-65W AC-DC
Power supply, input voltage range 90VACTo 305VAC.The peak power output of CSW65 power supply is 65W, and no-load power consumption is less than
150mW, power supply meet the requirement of (DOE) 6 grades of efficiencies and global safety mechanism.In addition, CSW65 power supply also is compliant with UL13102
Class, UL/CSA/IEC/EN60950-1 safety standard.CSW65 AC-DC power supply is answered suitable for industry, communication and broadcast
With.
UPS backup power source provides lithium battery intelligent management of charging and discharging, has constant-current constant-voltage charging, fill it is full automatically power off, gather around
There are real time charging electric discharge and self application charge function；Ripple is less than 30mV, and supply voltage is stablized；External input power supply, battery supply
Electric seamless switching can obtain the information such as battery capacity by communication command.
As the preferred of factory's circle characteristic contamination continuous monitoring device, the monitoring device further includes measurement module, described
Measurement module connects the microprocessor, and measurement module is connected with measurement card, and each measurement card is equipped with independent air inlet/outlet.It is high-precision
Degree measuring technique is extremely important in gas sensor and automation control area, and the correctness of detection technique selection directly closes
It is the long-time stability and measurement accuracy to system.The utility model selects ADI company for the high-precision of photoelectric current flow measurement
Spend current/voltage-converted amplifier.According to this specific condition of gas small-signal, ultra-low drift, ultra-low noise in order to obtain
With the high precision performance index request of strong anti-interference, using symmetrical compensation circuit design, the integrated electricity of reasonable selection high-precision
Core devices of the road as circuit.In order to reinforce anti-interference ability, key technology is targetedly effectively treated.Pass through
Actual field work operation, it was demonstrated that work well reliable operation, meets environment grade low concentration high-acruracy survey and safety level is high
The requirement of concentration quick response.
It measures card interface and supports intelligent measuring card.Each measurement card can choose to install the gas sensing of one or two kinds of types
Device supports 7-14 only different types of gas sensor.Communication interface uses digitized communication technology, and gas type is known automatically
Not.Every road measurement card has an independent air inlet/outlet, and disengaging gaseity issues instruction by master control and determines, the state in measurement process by
Valve island allocation component solenoid valve is determined according to gas concentration data, every cross reaction data and various kinds of sensors working condition itself
It is fixed.
As the preferred of factory's circle characteristic contamination continuous monitoring device, the fly net uses 316 stainless (steel) wire of several layers
Compacting is formed；The cylinder filter that the filter uses glass fibre material to constitute.Fly net is by 316 stainless steel network pressure of multilayer
It makes, no replacement is required.The cylinder filter that first order filter is made of glass fibre material, replacement cycle 3-6 month.
As the preferred of factory's circle characteristic contamination continuous monitoring device, the filter includes by-pass filtration part and second level mistake
Part is filtered, by-pass filtration part filter core uses PP cotton coarse filtration filter core, and secondary filtration part uses fluorine dragon precision Filter element.By-pass filtration part uses
Surface-modified PP cotton coarse filtration filter core, utilizes the microcellular structure and hydrophobicity feature of high-cleanness, high polypropylene material, Ke Yiyou
Effect prevents the particulate matter of diameter 0.45um or more and 90% or more moisture is stopped to enter filter element, extends filter element
Service life.Secondary filtration part uses fluorine dragon precision Filter element, and utilization more tiny microcellular structure and strong-hydrophobicity can stop
The particulate matter of diameter 0.1um or more, and constant loine pressure can be played the role of.
As the preferred of factory's circle characteristic contamination continuous monitoring device, the electrochemical sensor front end portion is equipped with and inspection
The working electrode that gas reaction generates electric current is surveyed, rear end part includes detection circuit, and the detection circuit is used for front end portion
The current strength of generation is detected and is shown in digital form, and the gas of electrochemical sensor detection includes CO, H2S、Cl2、
NH3、SO2、NO2、CoCl2Or HCL.Since electrochemical sensor front end portion detection essence is a kind of cell reaction, it then follows farad
Law, i.e. electrolysis law are the philosophys that electrolytic process follows.Faraday's First Law shows in electrolytic process, negative
The amount that extremely upper reducing substances is precipitated is directly proportional to the current strength and conduction time passed through.Electrochemical sensor factory provides
The corresponding current signal strength of unit concentration and the corresponding base current drift value of unit temperature.
Front end is not lain in by the poor reason of the resolution ratio of existing sensor technology known to Faraday's law and accuracy to pass
Sensor generates signal section, and is the performance of rear end detection circuit.The current value that electrochemical sensor generates is a kind of continuous
Analog signal is passed through AD conversion and measured by change modeling signal due to can mutually convert between analog signal and digital signal
Digital signal is turned to, that is, the different amplitudes of analog signal is allowed to respectively correspond different binary values, it can be by mould for example, by using 8 AD
Quasi- signal quantization is 2^8=256 magnitude.It is typical small signal inspection since sensor contacts the current detecting generated with gas
It surveys, using analog quantity or low level AD conversion at digital quantity, can not carry out accurately distinguishing detection；And use high-order AD conversion at
Digital quantity is highly prone to the interference of extraneous factor although precision is very high, and numerical value generates sub-rule fluctuation.With H2S sensing
For device, 1ppm hydrogen sulfide gas can produce the current value of 0.70uA with sensor contacts, detects electric current with gas concentration and is in
Curved line relation, and so on 0.01ppm concentration theoretically can produce the current value of 0.007uA, such as detection circuit performance
It is bad, it may appear that signal detection less than or detection error signal the phenomenon that.The signal source that electrochemical sensor generates electric current is one
Sample, the difference is that different processing modes can make sensor show different inspections to the processing mode of signal source
Survey performance.The electrochemical sensor measuring technique that the utility model uses is the technological core based on existing sensor characteristics
Place is the processing mode to signal source.
The utility model relates to photoion gas sensor be a kind of there is high sensitivity, widely used detection
Device can detecte the volatile organic compounds of the 10000ppm (1%) from the 10ppb of extremely low concentration to higher concentration
(VolatileOrganicCompounds, abbreviation VOC) and other toxic gases.It is small in size, smart compared with traditional detection method
High (ppm grades) high-resolution of degree, response is fast, can be provided in real time with important advantages such as follow-on test, real-time, safety height
Information feedback, this feedback can make administrative staff confirm Environmental security state, it is ensured that the safety of area people, for potential
Leakage accident prevention automatic monitoring alarm, incident area confirmation aspect also have broad application prospects.Due to any situation
Under, gas or steam are diffused out from its source, and after diffusion, then can be diluted by surrounding air until detecting not
To the presence of the substance.So, so that it may establish a concentration gradient, i.e., after gas is spread completely, concentration is by most
High source is diluted to always zero.As long as detecting the gradient of this concentration with light ionized gas sensor, and follow concentration
Increased direction is it finds that the source revealed, and since PID is direct reading instrument, i.e. PID can directly be read by side gas in sky
Concentration in gas indicates with ppm unit, therefore, using PID will soon know pollution range have it is much, to many ppm
The toxic compounds of grade have very high sensitivity and accuracy.
As the preferred of factory's circle characteristic contamination continuous monitoring device, the microprocessor includes 3 level production lines and Harvard
Structure, microprocessor peripheral component are equipped with the flash memory of 512KB, the data storage of 64KB, ethernet mac, USB master
Machine/slave/OTG interface, 8 channel DMA controllers, 4 UART, 2 channels CAN, 2 SSP controllers, SPI interface, 3 IIC
Interface, the IIS interface of 2 inputs and 2 outputs, 12 ADC in 8 channels, 10 DAC, motor control PWM, orthogonal encoder interface,
4 general purpose timers, 6 output general PWM, have the battery-powered RTC of independent electrical and general purpose I/O pins.
As the preferred of factory's circle characteristic contamination continuous monitoring device, purification pipe described in three groups connects with the drier respectively
It connects, the drier uses Nafion drier.Nafion drier frozen-free and it is able to carry out the sample mutually synthermal with environment
Gas is analyzed, and high-power energy consumption is not necessarily to, and the water content solved in sample gas does not condense, and corruption is analyzed or caused to moisture interference
The problem of erosion and maintenance, sample gas can be dried at once.
As the preferred of factory's circle characteristic contamination continuous monitoring device, the monitoring device is connected with cabinet body, the cabinet body
Front and back side is respectively equipped with door body, and door body is connected with stainless steel machinery cabinet lock.
The utility model has the advantages that Applied Electrochemistry sensor, photoion gas sensor and semiconductor sensing
Device realizes more gas configurations, highly integrated, and breakthrough traditional sensors precision is low, stability is poor, anti-interference weak defect, makes its survey
Accuracy of measurement reaches the 0.01ppm of environmental grade hereinafter, detection range 100ppm or more；Zero point correction module can make device annual
Stable operation, a possibility that influencing device by extraneous factor, are preferably minimized, and carry out active sampling, allow device in harmful gas
The first time of body diffusion issues warning information, it is ensured that the timeliness of O&M reduces failure rate, improves normal operation rate, solution
Determined replaces the at high cost of in-line meter application, high failure rate, operation expense higher three high with laboratory instrument in the past
Problem；It solves and previous replaces that the with low content of technology of automatic online product, automatic running degree are low, examine with industrial safety product
Survey three low low problems of precision.
Detailed description of the invention
Fig. 1 is embodiment Zhong Chang circle characteristic contamination continuous monitoring device structural schematic diagram；
Fig. 2 is factory's circle characteristic contamination continuous monitoring device schematic diagram of gas circuit；
Fig. 3 is that factory's circle characteristic contamination continuous monitoring device gas pre-processes schematic diagram；
Fig. 4 is factory's circle characteristic contamination continuous monitoring device electrochemical sensor structure principle chart.
Specific embodiment
The following examples illustrate the utility model, but is not intended to limit the scope of the present invention.
As shown in Figure 1, Figure 2 and Figure 3, a kind of factory's circle characteristic contamination continuous monitoring device, the monitoring device include micro-
Processor 1, touch-control module 2 and power module 3, the microprocessor 1 are based on ARM Cortex-M3 kernel, the touch-control module 2
Connect with microprocessor 1, the power module 3 is connect with microprocessor 1, the monitoring device further include remote communication module 4,
Detection module 20, zero point correction module 5, sampling module 6 and preprocessing module 7；The remote communication module 4 and the micro process
Device 1 connects, and remote communication module 4 is communicated using GPRS or cable network communication, and remote communication module 4 is connected with closed lazy
The lightning protection device of property gas-discharge tube；The detection module 20 is connect with the microprocessor 1, and detection module 20 at least connects
It is connected to electrochemical sensor 8, photoion gas sensor 9 and semiconductor transducer 10, electrochemical sensor 8 is inorganic for detecting
Poison gas, photoion gas sensor 9 are examined for detecting volatile organic compounds, semiconductor transducer 10 for chloroform
It surveys；
The zero point correction module 5 is connect with the microprocessor 1, and zero point correction module 5 is connected with zero gas generating means,
Zero gas generating means be used for by air hydrocarbon and inorganic compound concentration be down to sensor detection limit or less；It is described
Sampling module 6 connects the microprocessor 1, and sampling module 6 is connected with main sampler, and the main sampler is equipped with 11 He of fly net
Filter 12；
The preprocessing module 7 is connect with microprocessor 1, and preprocessing module 7 is connected with steam separation assembly 13, purification group
The island Jian14He Fa allocation component 15, the steam separation assembly 13 are equipped with vacuum pump 16 and drier 17, vacuum pump 16 and drying
It is connected between device 17 through pipeline；The purification assembly 14 includes purification pipe 18, the purification pipe 18 including at least TVOC and benzene,
NH3With CO, SO2-HCL-NO2Three groups；Valve island allocation component 15 is connect with the purification pipe 18.
The utility model purification assembly 14 is had ready conditions under normal sample working condition participates in operation, can greatly prolong filter
Expect the service life, filtrate is effective during guaranteeing operation and maintenance, and maintenance time was at 3 months or more under normal circumstances.The work of purification assembly 14
Operation mode is instructed according to microprocessor 1 and is run, and participates in system work under two conditions, and first is during device is calibrated automatically,
Second is the gas duration of existence there are serious cross reaction.Both conditions are microprocessors 1 according to all kinds of gas sensors
Working condition and detection data calculated, meet impose a condition issue start command.
The present apparatus is communicated using plug-in type GPRS or cable network communication, maintenance side of flexible choice communication system operator
Just.In the design, it by the network equipment for selecting to have High Reliability Design, reduces equipment failure rate and improves network reliability.
The reliability of equipment itself is to determine the principal element of whole network system reliability, and the utility model chooses Huawei 2G/3G/4G
Communication module group.DTU equipment has high reliability, is optimized by the anti-interference test of EMC in device hardware, Logistics networks reliability.
In one embodiment of factory's circle characteristic contamination continuous monitoring device, the monitoring device further includes power module 3
With touch-control module 2, the power module 3 is connect with the microprocessor 1, and power module 3 is connected with CSW65 AC-DC electricity
Source and UPS backup power source；The touch-control module 2 is connect with the microprocessor 1, and touch-control module 2 is connected with touch screen.
CSW6540-65W AC-DC power supply, input voltage range 90VACTo 305VAC.The peak power output of CSW65 power supply is
65W, no-load power consumption are less than 150mW, and power supply meets the requirement of (DOE) 6 grades of efficiencies and global safety mechanism.In addition, CSW65 is electric
Source also is compliant with UL13102 class, UL/CSA/IEC/EN60950-1 safety standard.CSW65 AC-DC power supply is suitable for work
Industry, communication and broadcasted application.
UPS backup power source provides lithium battery intelligent management of charging and discharging, has constant-current constant-voltage charging, fill it is full automatically power off, gather around
There are real time charging electric discharge and self application charge function；Ripple is less than 30mV, and supply voltage is stablized；External input power supply, battery supply
Electric seamless switching can obtain the information such as battery capacity by communication command.
In one embodiment of factory's circle characteristic contamination continuous monitoring device, the monitoring device further includes measurement module
19, the measurement module 19 connects the microprocessor 1, and measurement module 19 is connected with measurement card, and each measurement card is equipped with independent
Air inlet/outlet.Technology Precision is extremely important in gas sensor and automation control area, detection technique selection
Correctness is directly related to the long-time stability and measurement accuracy of system.The utility model selects ADI company to be used for photoelectricity
Flow high-precision current/voltage converting amplifiers of flow measurement.It is ultralow in order to obtain according to this specific condition of gas small-signal
It drifts about, the high precision performance index request of ultra-low noise and strong anti-interference, using symmetrical compensation circuit design, reasonable selection
Core devices of the high-precision integrated circuit as circuit.In order to reinforce anti-interference ability, key technology has been carried out targetedly
It is effectively treated.It is worked and is run by actual field, it was demonstrated that work well reliable operation, meets environment grade low concentration high-precision and surveys
The requirement of amount and safety level high concentration quick response.
It measures card interface and supports intelligent measuring card.Each measurement card can choose to install the gas sensing of one or two kinds of types
Device supports 7-14 only different types of gas sensor.Communication interface uses digitized communication technology, and gas type is known automatically
Not.Every road measurement card has an independent air inlet/outlet, and disengaging gaseity issues instruction by master control and determines, the state in measurement process by
Allocation component 15 solenoid valve in valve island is according to gas concentration data, every cross reaction data and various kinds of sensors working condition itself
It determines.
In one embodiment of factory's circle characteristic contamination continuous monitoring device, the fly net 11 uses several layers 316 not
Rust steel mesh is suppressed to be formed；The cylinder filter 12 that the filter 12 is constituted using glass fibre material.Fly net 11 is by multilayer
316 stainless (steel) wires are suppressed, and no replacement is required.The cylinder filter 12 that first order filter 12 is made of glass fibre material,
Replacement cycle 3-6 month.
In one embodiment of factory's circle characteristic contamination continuous monitoring device, the filter 12 include by-pass filtration part and
Secondary filtration part, by-pass filtration part filter core use PP cotton coarse filtration filter core, and secondary filtration part uses fluorine dragon precision Filter element.By-pass filtration
Part uses surface-modified PP cotton coarse filtration filter core, using the microcellular structure and hydrophobicity feature of high-cleanness, high polypropylene material,
The particulate matter of diameter 0.45um or more can be effectively prevented and 90% or more moisture is stopped to enter 12 filter core of filter, extend filtering
The service life of 12 filter core of device.Secondary filtration part uses fluorine dragon precision Filter element, the more tiny microcellular structure of utilization and strong hydrophobic
Property, can blocking diameter 0.1um or more particulate matter and play the role of constant loine pressure.
In one embodiment of factory's circle characteristic contamination continuous monitoring device, 8 front end of electrochemical sensor is set up separately
There is the working electrode for reacting with detection gas and generating electric current, rear end part includes detection circuit, and the detection circuit is used for preceding
End part generate current strength detected and shown in digital form, electrochemical sensor 8 detect gas include CO,
H2S、Cl2、NH3、SO2、NO2、CoCl2Or HCL.Since 8 front end portion of electrochemical sensor detection essence is a kind of cell reaction,
Faraday's law, i.e. electrolysis law are followed, is the philosophy that electrolytic process follows.Faraday's First Law shows be electrolysed
Cheng Zhong, the amount that reducing substances is precipitated on cathode are directly proportional to the current strength and conduction time passed through.Electrochemical sensor 8 goes out
Factory provides the corresponding current signal strength of unit concentration and the corresponding base current drift value of unit temperature.
Front end is not lain in by the poor reason of the resolution ratio of existing sensor technology known to Faraday's law and accuracy to pass
Sensor generates signal section, and is the performance of rear end detection circuit.The current value that electrochemical sensor 8 generates is a kind of continuous
Analog signal is passed through AD conversion and measured by change modeling signal due to can mutually convert between analog signal and digital signal
Digital signal is turned to, that is, the different amplitudes of analog signal is allowed to respectively correspond different binary values, it can be by mould for example, by using 8 AD
Quasi- signal quantization is 2^8=256 magnitude.It is typical small signal inspection since sensor contacts the current detecting generated with gas
It surveys, using analog quantity or low level AD conversion at digital quantity, can not carry out accurately distinguishing detection；And use high-order AD conversion at
Digital quantity is highly prone to the interference of extraneous factor although precision is very high, and numerical value generates sub-rule fluctuation.With H2S sensing
For device, 1ppm hydrogen sulfide gas can produce the current value of 0.70uA with sensor contacts, detects electric current with gas concentration and is in
Curved line relation, and so on 0.01ppm concentration theoretically can produce the current value of 0.007uA, such as detection circuit performance
It is bad, it may appear that signal detection less than or detection error signal the phenomenon that.The signal source that electrochemical sensor 8 generates electric current is one
Sample, the difference is that different processing modes can make sensor show different inspections to the processing mode of signal source
Survey performance.8 measuring technique of electrochemical sensor that the utility model uses is the technological core based on existing sensor characteristics
Place is the processing mode to signal source.
Referring to fig. 4, the utility model relates to photoion gas sensor 9 be it is a kind of there is high sensitivity, purposes is wide
General detector can detecte the volatile organic compound of the 10000ppm (1%) from the 10ppb of extremely low concentration to higher concentration
Object (VolatileOrganicCompounds, abbreviation VOC) and other toxic gases.Compared with traditional detection method, small in size,
Precision height (ppm grades) high-resolution, response is fast, can provide reality with important advantages such as follow-on test, real-time, safety height
When information feedback, this feedback can make administrative staff confirm Environmental security state, it is ensured that the safety of area people, for latent
Leakage accident prevention automatic monitoring alarm, incident area confirmation aspect also have broad application prospects.Due to any feelings
Under condition, gas or steam are diffused out from its source, and after diffusion, then can be diluted by surrounding air until detection
Less than the presence of the substance.So, so that it may establish a concentration gradient, i.e., after gas is spread completely, concentration by
Highest source is diluted to always zero.As long as detecting the gradient of this concentration with light ionized gas sensor 9, and follow dense
Increased direction is spent it finds that the source revealed, since PID is direct reading instrument, i.e. PID can directly be read to be existed by side gas
Concentration in air indicates with ppm unit, therefore, using PID will soon know pollution range have it is much, to very much
Ppm grades of toxic compounds have very high sensitivity and accuracy.
In one embodiment of factory's circle characteristic contamination continuous monitoring device, the microprocessor 1 include 3 level production lines and
Harvard structure, 1 peripheral component of microprocessor be equipped with the flash memory of 512KB, the data storage of 64KB, ethernet mac,
Usb host/slave/OTG interface, 8 channel DMA controllers, 4 UART, 2 channels CAN, 2 SSP controllers, SPI interface, 3
12 ADC, 10 DAC, motor control PWM, orthogonal encoder of IIS interface, 8 channels that a IIC interface, 2 inputs and 2 export
Interface, 4 general purpose timers, 6 output general PWM, have the battery-powered RTC of independent electrical and general purpose I/O pins.
In one embodiment of factory's circle characteristic contamination continuous monitoring device, purification pipe 18 described in three groups is done with described respectively
Dry device 17 connects, and the drier 17 uses Nafion drier.It Nafion drier frozen-free and is able to carry out and environment phase
Synthermal sample gas analysis, is not necessarily to high-power energy consumption, and the water content solved in sample gas does not condense, moisture interference analysis or
The problem of corroding and safeguarding is caused, sample gas can be dried at once.
In one embodiment of factory's circle characteristic contamination continuous monitoring device, the monitoring device is connected with cabinet body, described
Side is respectively equipped with door body before and after cabinet body, and door body is connected with stainless steel machinery cabinet lock.
The utility model Applied Electrochemistry sensor 8, photoion gas sensor 9 and semiconductor transducer 10 realize more gas
Body configuration, highly integrated, breakthrough traditional sensors precision is low, stability is poor, anti-interference weak defect, reaches its measurement accuracy
The 0.01ppm of environmental grade is hereinafter, detection range 100ppm or more；Zero point correction module 5 can make device whole year stable operation,
A possibility that influencing device by extraneous factor, is preferably minimized, and carries out active sampling, allows device in harmful gases diffusion
Warning information is issued at the first time, it is ensured that the timeliness of O&M reduces failure rate, improves normal operation rate, solves previous
At high cost, the high failure rate, the high problem of operation expense higher three for replacing in-line meter to apply with laboratory instrument；It solves
It is previous with industrial safety product replace automatic online product it is with low content of technology, automatic running degree is low, detection accuracy is low
Three low problems.
Although above having made detailed description to the utility model with generality explanation and specific embodiment,
On the basis of the utility model, it can be made some modifications or improvements, this is apparent to those skilled in the art
's.Therefore, these modifications or improvements on the basis of without departing from the spirit of the present invention, belong to the utility model and want
Seek the range of protection.
Claims (9)
1. a kind of factory's circle characteristic contamination continuous monitoring device, the monitoring device includes microprocessor (1), touch-control module (2)
With power module (3), the microprocessor (1) is based on ARM Cortex-M3 kernel, the touch-control module (2) and microprocessor
(1) it connects, the power module (3) connect with microprocessor (1), it is characterised in that:
The monitoring device further includes remote communication module (4), detection module (20), zero point correction module (5), sampling module
(6) and preprocessing module (7)；The remote communication module (4) connect with the microprocessor (1), and remote communication module (4) is adopted
With GPRS communication or cable network communication, the lightning protection that remote communication module (4) is connected with closed noble gas discharge pipe is protected
Protection unit；The detection module (20) connect with the microprocessor (1), and detection module (20) has been at least connected with electrochemical sensing
Device (8), photoion gas sensor (9) and semiconductor transducer (10), electrochemical sensor (8) are used to detect inorganic poison gas,
Photoion gas sensor (9) is detected for detecting volatile organic compounds, semiconductor transducer (10) for chloroform；
The zero point correction module (5) connect with the microprocessor (1), and zero point correction module (5) is connected with zero gas and generates dress
Set, zero gas generating means be used for by air hydrocarbon and inorganic compound concentration be down to sensor detection limit or less；
The sampling module (6) connects the microprocessor (1), and sampling module (6) is connected with main sampler, and the main sampler is equipped with
Fly net (11) and filter (12)；
The preprocessing module (7) connect with microprocessor (1), and preprocessing module (7) is connected with steam separation assembly (13), net
Change component (14) and valve island allocation component (15), the steam separation assembly (13) is equipped with vacuum pump (16) and drier (17),
It is connected between vacuum pump (16) and drier (17) through pipeline；The purification assembly (14) includes purification pipe (18), the purification
It manages (18) and includes at least TVOC and benzene, NH3With CO, SO2-HCL-NO2Three groups；Valve island allocation component (15) and the purification
Manage (18) connection.
2. a kind of factory's circle characteristic contamination continuous monitoring device according to claim 1, it is characterised in that: the power supply mould
Block (3) is connected with CSW65 AC-DC power supply and UPS backup power source；The touch-control module (2) is connected with touch screen.
3. a kind of factory's circle characteristic contamination continuous monitoring device according to claim 1, it is characterised in that: the monitoring dress
Setting further includes measurement module (19), and the measurement module (19) connects the microprocessor (1), and measurement module (19) is connected with survey
Amount card, each measurement card are equipped with independent air inlet/outlet.
4. a kind of factory's circle characteristic contamination continuous monitoring device according to claim 1, it is characterised in that: the fly net
(11) it suppresses to be formed using 316 stainless (steel) wire of several layers；The cylinder mistake that the filter (12) uses glass fibre material to constitute
Filter (12).
5. a kind of factory's circle characteristic contamination continuous monitoring device according to claim 1, it is characterised in that: the filter
It (12) include by-pass filtration part and secondary filtration part, by-pass filtration part filter core uses PP cotton coarse filtration filter core, and secondary filtration part uses
Fluorine dragon precision Filter element.
6. a kind of factory's circle characteristic contamination continuous monitoring device according to claim 1, it is characterised in that: the electrochemistry
Sensor (8) front end portion is equipped with the working electrode for reacting with detection gas and generating electric current, and rear end part includes detection circuit, institute
Detection circuit is stated for the current strength that front end portion generates to be detected and shown in digital form, electrochemical sensor
(8) gas detected includes CO, H2S、Cl2、NH3、SO2、NO2、CoCl2Or HCL.
7. a kind of factory's circle characteristic contamination continuous monitoring device according to claim 1, it is characterised in that: the micro process
Device (1) includes 3 level production lines and Harvard structure, and microprocessor (1) peripheral component is equipped with the flash memory of 512KB, 64KB
Data storage, ethernet mac, usb host/slave/OTG interface, 8 channel DMA controllers, 4 UART, 2 channels CAN, 2
A SSP controller, SPI interface, 3 IIC interfaces, 2 inputs and the IIS interface of 2 outputs, 12 ADC in 8 channels, 10 DAC,
Motor control PWM, orthogonal encoder interface, 4 general purpose timers, 6 output general PWM, have the battery-powered RTC of independent electrical
And general purpose I/O pins.
8. a kind of factory's circle characteristic contamination continuous monitoring device according to claim 1, it is characterised in that: net described in three groups
Change pipe (18) to connect with the drier (17) respectively, the drier (17) uses Nafion drier.
9. a kind of factory's circle characteristic contamination continuous monitoring device according to claim 1, it is characterised in that: the monitoring dress
It sets and is connected with cabinet body, side is respectively equipped with door body before and after the cabinet body, and door body is connected with stainless steel machinery cabinet lock.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201820771979.6U CN208420839U (en) | 2018-05-22 | 2018-05-22 | A kind of factory's circle characteristic contamination continuous monitoring device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201820771979.6U CN208420839U (en) | 2018-05-22 | 2018-05-22 | A kind of factory's circle characteristic contamination continuous monitoring device |
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| CN208420839U true CN208420839U (en) | 2019-01-22 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108362842A (en) * | 2018-05-22 | 2018-08-03 | 北京欧优圣特能源技术有限公司 | A kind of factory's circle characteristic contamination continuous monitoring device |
| CN109946258A (en) * | 2019-04-12 | 2019-06-28 | 孙琦 | A kind of analysis of experiments system |
| US11854845B2 (en) | 2020-09-16 | 2023-12-26 | Changxin Memory Technologies, Inc. | System for monitoring environment |
-
2018
- 2018-05-22 CN CN201820771979.6U patent/CN208420839U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108362842A (en) * | 2018-05-22 | 2018-08-03 | 北京欧优圣特能源技术有限公司 | A kind of factory's circle characteristic contamination continuous monitoring device |
| CN109946258A (en) * | 2019-04-12 | 2019-06-28 | 孙琦 | A kind of analysis of experiments system |
| US11854845B2 (en) | 2020-09-16 | 2023-12-26 | Changxin Memory Technologies, Inc. | System for monitoring environment |
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