CN206710157U - OVOCs remote control automatic sampling apparatus based on Internet of Things - Google Patents
OVOCs remote control automatic sampling apparatus based on Internet of Things Download PDFInfo
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- CN206710157U CN206710157U CN201720305759.XU CN201720305759U CN206710157U CN 206710157 U CN206710157 U CN 206710157U CN 201720305759 U CN201720305759 U CN 201720305759U CN 206710157 U CN206710157 U CN 206710157U
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Abstract
It is the portable casing provided with air inlet that the utility model, which provides a kind of OVOCs remote controls automatic sampling apparatus based on Internet of Things, box house places sample collection system, gas circuit control unit, data record unit, ambient parameter unit, data transfer unit and cooling system, can external power supply or battery be that minipump and whole device are powered, the box house all component can be realized remotely and automatically controlled by computer or mobile terminal.Compared with prior art, the utility model device design structure is advanced rationally, and low-profile is portable and builds Internet of Things using wireless network, realizes the remote control of automatic sampler, the record of sampling flow and storage.Easy operation, it is special to be adapted to as field sampling, automatic sampling website or sounding balloon sampling etc., it has not been convenient to which that operating personnel are on duty or scene that can not manually complete.
Description
Technical field
A kind of detection means of volatile organic matter is the utility model is related to, it is organic more particularly to a kind of oxygen-containing volatility
The detection means of thing (OVOCs), monitoring and environmental process monitoring technology field applied to air pollutant emission.
Background technology
Oxygen-containing volatile organic matter (OVOCs) is very important trace components in convection current atmosphere, in Atmospheric Chemistry mistake
Important role is play in journey, to atmospheric oxidn ability, the formation of secondary organic aerosol and health etc. all
There is important influence.OVOCs is mainly made up of the group compounds of aldehydes and ketones such as formaldehyde, acetone, alcohol compound, ether compound etc.,
With stronger polarity and water solubility, the sampling of inapplicable regular volatile organic matter (VOCs) and analysis method.At present,
OVOCs sampling is main be manually performed, it is necessary to sample collector carry out the replacing of a sampling pipe at regular intervals, open and
Stop sampling pump, measure sampling flow velocity etc., time-consuming effort；And pollution is inevitably brought in the Renewal process of sampling pipe
And human error；In addition, situations such as field sampling, automatic sampling website or sounding balloon sample, it has not been convenient to which operating personnel are worth
Keep or can not manually complete.
Utility model content
In order to solve prior art problem, the purpose of this utility model is to overcome insufficient existing for prior art, there is provided
A kind of OVOCs remote control automatic sampling apparatus based on Internet of Things, Internet of Things can be based on and carry out remote control, can be according to setting
Ambient parameter judge sampling initial time, it is continuous, etc. when or non-isochronic interval ground OVOCs data, energy in automatic data collection air
Enough portable uses, and the collection of OVOCs samples in air can be carried out anywhere or anytime, easy operation, specially it is adapted to picture
Field sampling, automatic sampling website or sounding balloon sampling etc., it has not been convenient to which operating personnel are on duty or can not manually complete
Scene, the observation for atmospheric photochemical reaction process and typical pollution course all have great importance.
Purpose is created to reach above-mentioned utility model, the utility model uses following technical proposals：
A kind of OVOCs remote control automatic sampling apparatus based on Internet of Things, using the portable casing provided with air inlet,
In box house, power control unit, sample collection system, gas circuit control unit, data record unit, ambient parameter list are set
Member, data transfer unit, input/output unit and cooling system, it is specially：
Power control unit is after the control signal sent by master controller is received, the closure of energy control circuit or disconnection,
And then control the break-make of the way circuit of automatic sampling apparatus；
Sample collection system mainly includes minipump and multichannel sample collection gas circuit, multichannel sample collection gas circuit
Middle to set a series of OVOCs absorption branch pipe using parallel, each OVOCs absorption branch pipes are according to detection target compound
Difference be respectively coated different derivatization reagents, the sampling pipe group as different target compound；Minipump is by master control
Device control processed；Switched between multigroup OVOCs absorption branch pipe by gas circuit control unit, realize Automated condtrol；
Gas circuit control unit by a series of breather check valves of main controller controls and a series of exhaust check valves break-make, respectively
Breather check valve corresponds to the connection connected installed in the inlet end of each OVOCs absorption branch pipes with multichannel sample collection gas circuit respectively
Guan Shang, corresponding branch's rear end connecting tube installed in each OVOCs absorption branch pipes connects each exhaust check valve with exhaust main respectively
Connecting tube on, the rear end exhaust outlet of exhaust main connects with the air entry of minipump, the exhaust outlet energy of minipump
Tail gas is discharged, magnetic valve is correspondingly arranged on the end connecting line of each OVOCs absorption branch pipes, each OVOCs absorption branch pipe it
Between switched over by each magnetic valve of main controller controls of gas circuit control unit, realize control different OVOCs absorption branch pipes from
Dynamicization sample collection, pressure-regulating valve is set to adjust the pressure in gas circuit in gas circuit control unit；
Data record unit mainly includes gas flow controller and data record display device, and gas flow controller is set
In gas circuit control unit, gas flow controller is connected with master controller signal, and master controller is believed with data record display
Number connection, the display screen of data record display, by gas flow controller and data record display device composition data record
Member, main controller controls data record unit are read out and stored sample information；
Ambient parameter unit is TVOCs sensors, ozone sensor, PM2.5Sensor, temperature sensor and humidity sensor
The combination of any one sensor or any several sensors in device, ambient parameter unit are connected with master controller signal；
Data transfer unit includes data transfer assembly, and master controller passes through control data transfer assembly and outer computer
Or the data transmission module of mobile terminal realizes data communication；
Input/output unit includes the keyboard and display screen being arranged on casing, and keyboard is connected with master controller signal；
Cooling system radiates for automatic sampling apparatus.
As the preferable technical scheme of the utility model, the power supply circuit of power control unit control is divided into two-way, and first
Road circuit controls the opening and closing of the low-voltage circuit inside whole automatic sampling apparatus, and the second road circuit controls micro- as high-tension circuit
The opening and closing of type vavuum pump, power control unit can open two-way electricity simultaneously after the control signal that master controller is sent is received
Road, or individually open low-voltage circuit or high-tension circuit.
As the further preferred technical scheme of such scheme, power control unit includes two relays, each master control
Device processed controls the high-tension electricity where the low-voltage circuit and minipump of whole automatic sampling apparatus respectively by control relay
The opening and closing on road.
As the further preferred technical scheme of such scheme, data transfer unit also includes remote control signal end,
Remote control signal end is connected with master controller signal, and remote control signal end can receive outer computer or mobile terminal is sent
Control instruction, control the opening and closing of the low-voltage circuit or high-tension circuit of whole automatic sampling apparatus.
It is preferred that make data transfer assembly, remote control signal end and the data transmission module of outer computer or mobile terminal
Three realizes computer, power control unit, data record unit and ring by the interworking server data with public network IP
Internet of Things between the parameters unit of border.Data transfer assembly includes one and serial data is converted into IP data or turns IP data
Serial data and the wireless terminal device transmitted by cordless communication network are changed to, is DTU1.Wrap at remote control signal end
One is included serial data is converted into IP data or IP data are converted into serial data and passed by cordless communication network
The wireless terminal device sent, it is DTU2.The data transmission module of outer computer or mobile terminal includes a gateway device.
As the further preferred technical scheme of such scheme, power control unit is external on casing by being arranged at
Socket is connected with external power source and is powered, or is powered using battery, box house all component is passed through
Computer or mobile terminal are realized remotely and automatically controlled, and can external power supply or battery be whole device power supply；
As the further preferred technical scheme of such scheme, in multichannel sample collection gas circuit also setting up pressure puts down
Weighing apparatus pipe, pressure-equalizing pipe are arranged in parallel with OVOCs absorption branch pipes, one end and the multichannel sample collection gas of pressure-equalizing pipe
Road is connected, and the other end of pressure-equalizing pipe is connected by security solenoid valve with exhaust main, decomposition pressure balance pipeline, main control
Device is by controlling security solenoid valve to control the stress level in the pipeline of sample collection system.
As the further preferred technical scheme of such scheme, each electricity for controlling each OVOCs absorption branch pipe to be sampled
Magnet valve is respectively arranged in branch's rear end connecting tube.
As the further preferred technical scheme of such scheme, pressure-regulating valve is arranged on exhaust main.
As the further preferred technical scheme of such scheme, gas flow controller is arranged on exhaust main.
As the further preferred technical scheme of such scheme, cooling system is the fan installed in body side.
Above-mentioned sample collection system includes minipump and multichannel sample collection gas circuit, multichannel sample collection gas circuit
Middle connection OVOCs adsorbs branch pipe, and OVOCs absorption branch pipes are preferably filled with Tenax-TA, Carbosieve, silica gel or C18 adsorbents
Quartz glass tube, stainless steel tube or plastic tube, or for commercialized VOCs adsorption tubes, IVOCs (medium volatile organic matter),
SVOCs (semi-volatile organic matter) thermal desorption pipes or DNPH sampling pipes, preferably OVOCs absorption branch pipes are interior according to target compound
Difference can be coated with derivatization reagent, be coated with derivatization reagent preferred O- (2,3,4,5,6- phenyl-pentafluoride traps (PFPH) or 2,4- dinitro
Base phenylhydrazine (DNPH).OVOCs absorption branch pipes are shared at least eight groups, including at least the first adsorption tube, the second adsorption tube, the 3rd absorption
Pipe, the 4th adsorption tube, the 5th adsorption tube, the 6th adsorption tube, the 7th adsorption tube, the 8th adsorption tube.According to the interval of sampling and when
Between, the quantity of adsorption tube can be increased by increasing magnetic valve combination.
The utility model compared with prior art, has following substantive distinguishing features and advantage：
1. all components of the utility model device are highly integrated, size is small inside a small-sized machine box, in light weight, can
Carry with, it is easy to use；
2. the utility model by being programmed to microcomputer, can arbitrarily change sampling flow according to actual conditions, can be real
Existing random time, the automatic sampling of arbitrary interval, and Internet of Things is built using wireless network, realize the long-range of automatic sampler
Control, the record of sampling flow and storage, due to increasing sampling flow recording unit in gas circuit, considerably increase monitoring result
Accuracy；
3. the integrated ambient parameter collecting unit of the utility model is dense by TVOCs concentration, ozone in real-time monitoring of environmental
Degree, PM2.5Concentration and data of the Temperature and Humidity module, by data transfer unit and computer or mobile terminal communication, and by computer,
Mobile terminal or operating personnel judge, open and terminate sampling, the sample that the utility model is not limited solely to OVOCs is adopted
Collection, only need to change minipump and sampling pipe connection size, you can applied to conventional VOCs, IVOCs, SVOCs and other
The air sample collection of type solid adsorption tube；
4. the utility model realizes wireless long-range control function, therefore can be with unattended automatic sampling, or maximum
The consumption of the reduction human resources of degree；
5. the utility model be adapted to sounding balloon, field monitoring, automatic monitor station, the dynamic monitoring of smog box analog product,
Continuous sampling or unattended collection atmospheric sample use under the specific conditions such as high ferro, especially for enterprise's air pollutant emission
Monitoring and the typical whole atmospheric sample collection such as the environmental process of haze weather have great importance.
Brief description of the drawings
Fig. 1 is that the structure of OVOCs remote control automatic sampling apparatus of the utility model embodiment one based on Internet of Things is shown
It is intended to.
Fig. 2 is the outside drawing of OVOCs remote control automatic sampling apparatus of the utility model embodiment one based on Internet of Things.
Embodiment
Details are as follows for preferred embodiment of the present utility model：
Embodiment one：
In the present embodiment, referring to Fig. 1 and Fig. 2, a kind of OVOCs remote control automatic sampling apparatus based on Internet of Things,
Using the portable casing 19 provided with air inlet 101, set inside casing 19 power control unit 12, sample collection system,
Gas circuit control unit, data record unit, ambient parameter unit, data transfer unit, input/output unit and cooling system, tool
Body is：
Power control unit 12, by two relays, can be controlled after the control signal sent by master controller 10 is received
The closure of circuit processed or disconnection, and then control the break-make of the way circuit of automatic sampling apparatus；
Sample collection system mainly includes minipump 9 and multichannel sample collection gas circuit 1, multichannel sample collection gas
8 OVOCs are set to adsorb branch pipe 31~38 using parallel in road 1, OVOCs absorption branch pipes 31~38 use Teflon
Pipe, each OVOCs absorption branch pipes 31~38 are respectively coated different derivatization reagents according to the difference of detection target compound, as
The sampling pipe group 3 of different target compound, minipump 9 are controlled by master controller 10；
Gas circuit control unit by master controller 10 control 8 breather check valves 21~28 and 8 exhaust check valves 209~
216 break-make, breather check valve 21~28 and exhaust check valve 209~216 all use unidirectional stop valve, and master controller 10 uses
Programmable microcomputer, each breather check valve 21~28 correspond to the air inlet installed in each OVOCs absorption branch pipes 31~38 respectively
Hold in the connecting tube 102 connected with multichannel sample collection gas circuit 1, each exhaust check valve 209~216 corresponds to be arranged on respectively respectively
In the connecting tube that branch's rear end connecting tube 2 of OVOCs absorption branch pipes 31~38 connects with exhaust main 103, exhaust main 103
Rear end exhaust outlet connects with the air entry of minipump 9, and the exhaust outlet of minipump 9 can discharge tail gas, in each OVOCs
Adsorb and magnetic valve 51~58 is correspondingly arranged on the end connecting line of branch pipe 31~38, between each OVOCs absorption branch pipe 31~38
Control each magnetic valve 51~58 to switch over by the master controller 10 of gas circuit control unit, realize and control different OVOCs absorption
The automatic sampling of branch pipe 31~38 is collected, and pressure-regulating valve 6 is set in gas circuit control unit to adjust the pressure in gas circuit；Can
Programming microcomputer is used for the opening and closing for controlling magnetic valve, and then controls the opening and closing time of OVOCs absorption branch pipes, realizes
Automatic sampling；By being programmed to microcomputer, reservation sampling, interval sampling, selection sampling pipe sampling etc. can be achieved；Pass through
Remote control, automatic sampler can independently judge whether to need to sample and when tie according to the value of the ambient parameter unit of setting
Beam samples, and realizes intelligent sample control, can also be carried out determining when to need to sample by personnel, and complete sampling work；Pass through
Reservation sampling, interval sampling, selection sampling pipe sampling can be realized to microcomputer programming；
Data record unit mainly includes gas flow controller 7 and data record display device 8, gas flow controller 7
It is arranged in gas circuit control unit, gas flow controller 7 is connected with the signal of master controller 10, master controller 10 and data record
The signal of display 8 connects, the display screen 82 of data record display 8, by gas flow controller 7 and data record display device 8
Composition data recording unit, the control data recording unit of master controller 10 are read out and stored sample information；Minipump 9
It is integrated in inside automatic sampling apparatus casing 19, using a kind of miniature diaphragm formula vavuum pump, as little as -800KPa vacuum can be provided
Degree and up to 100KPa normal pressure, its inlet end are connected with the open rearward end of multichannel sample collection gas circuit, exhaust outlet emptying,
From multichannel sample collection gas circuit internal air exhausting, air-flow flows through OVOCs absorption branch pipes 31~38 by air inlet, in ambient air
OVOCs and derivatization reagent PFPH reactions are attracted in OVOCs absorption branch pipes 31~38；
Ambient parameter unit is TVOCs sensors 13, ozone sensor 14, PM2.5Sensor 15, the and of temperature sensor 16
Humidity sensor 17, ambient parameter unit are connected with the signal of master controller 10；
Data transfer unit includes data transfer assembly 111, and the data transfer on casing 19 is connected in by signal
Port 11 carries out data transmit-receive, and master controller 10 passes through control data transfer assembly 111 and outer computer or mobile terminal 18
Data transmission module 113 realize data communication；By controlling power, the regulation pressure-regulating valve of minipump 9, make gas circuit
Middle formation steady air flow, and the uninterrupted in gas circuit is adjusted by gas flow controller 7, to meet the need of different sampling tasks
Ask；Data record unit can record flow number and the sampling time at sampling process each moment, and pass through data transfer assembly
111 realize data communication with outer computer or mobile terminal 18；Ambient parameter collecting unit is integrated in casing 19, and it is produced
Data be sent to outer computer or mobile terminal 18 by data transfer assembly 111 and with the server of public network IP,
And whether transfer in outer computer or the analysis environments air of mobile terminal 18 TVOCs, ozone or particle concentration any one
It is exceeded or reach setting value, if then immediately beginning to OVOCs sample collection；The signal of outer computer or mobile terminal 18 is defeated
Enter output end with data transmission module 113 to be connected, receive from the gas flow controller 7 with public network IP server and each biography
The ambient parameter that the data of sensor, computer or the processing environment data acquisition unit of mobile terminal 18 collect, judge big vaporous
Whether condition reaches setting value, and if necessary to gather sample, computer or mobile terminal pass through the 3rd data transfer assembly and tool
The server for having public network IP sends control signal to the first data transfer assembly, starts to sample；
Input/output unit includes the keyboard 81 and display screen 82 being arranged on casing 19, and keyboard 81 is believed with master controller 10
Number connection, realizes convenient input and output, to realize any interaction；
Cooling system radiates for automatic sampling apparatus, ensures that instrument work is maintained at stable state.
In the present embodiment, referring to Fig. 1, the power supply circuit that power control unit 12 controls is divided into two-way, first via circuit
The opening and closing of the low-voltage circuit inside whole automatic sampling apparatus is controlled, the second road circuit controls micro vacuum as high-tension circuit
The opening and closing of pump 9, power control unit 12 can open two-way electricity simultaneously after the control signal that master controller 10 is sent is received
Road.The present embodiment uses the data transfer assembly 111 of intelligent remote system of the remote control unit based on mobile communication technology,
The control signal of outer computer or mobile terminal 18 is received, passes through the opening and closing of the whole machine power supply circuit of Control.For
Circuit is divided into two-way, can open machine internal low-voltage circuit simultaneously upon the reception of control signals, or individually open
Low-voltage circuit or minipump.By remote control, the present embodiment automatic sampler can be according to the ambient parameter unit of setting
Value independently judge whether need sample and when terminate to sample, realize intelligent sample control, can also be judged by personnel
When need to sample, and complete to sample.
In the present embodiment, two relays are included referring to Fig. 1, power control unit 12, each master controller 10 passes through control
Relay processed, the opening and closing of the low-voltage circuit of whole automatic sampling apparatus and the high-tension circuit at the place of minipump 9 is controlled respectively.
Power control unit uses two high power relays, can close or disconnect upon receiving the control signal, control automatic sampling cartridge
The break-make of circuits.
In the present embodiment, also include remote control signal end 112 referring to Fig. 1, data transfer unit, connected by signal
The remote control port 11 ' being arranged on casing 19 carries out data transmit-receive, remote control signal end 112 and the signal of master controller 10
Connection, remote control signal end 112 can receive the control instruction that outer computer or mobile terminal 18 are sent, and control is whole automatic
The opening and closing of the low-voltage circuit or high-tension circuit of sampling apparatus.Data transfer assembly 111, remote control signal end 112 and outside meter
Calculation machine or this three of the data transmission module 113 of mobile terminal are realized and calculated by the interworking server data with public network IP
Internet of Things between mechanical, electrical source control unit, data record unit and ambient parameter unit.In data transfer assembly 111
1. wireless terminal DTU with the interworking server data with public network IP, the rs 232 serial interface signal of power control unit status data is turned
IP signals are changed to, the server with public network IP is sent to by cordless communication network, then by the server with public network IP,
By data transmission module 113, the status data of relay is sent to remote control signal end 112, realizes long-range check certainly
Dynamic sampling apparatus start and stop parameter；Or obtained by cordless communication network from the server with public network IP through data transmission module
The computer control signal of 113 forwardings, and power control unit is sent control signals to, control whole device and micro vacuum
The power supply opening and closing of pump 9, realizes remote control switch machine；Wireless terminal DTU in remote control signal end 112 2. with public network
IP interworking server data, the rs 232 serial interface signal of all the sensors and gas flow controller 7 is converted into IP signals, passes through nothing
Line communication network is sent to the server with public network IP, or is obtained by cordless communication network from the server with public network IP
IP data controlling signals are taken, and it is converted to the rs 232 serial interface signal that mass flow controller can identify, it is adjusted in gas circuit
Uninterrupted；Data transmission module 113 is connected with computer or mobile terminal, enables outer computer or mobile terminal 18 from tool
The server for having public network IP obtains the data that data transfer assembly 111 and remote control signal end 112 are sent, or by computer
Or the control signal of mobile terminal is converted to IP data, pass through the server with public network IP and data transfer assembly 111 or remote
Process control signal end 112, is sent to power control unit and data record unit, data produced by realizing automatic sampling apparatus
Collection and the transmission of computer control signal.
In the present embodiment, referring to Fig. 1 and Fig. 2, power control unit 12 passes through the external socket that is arranged on casing 19
21 are connected as minipump 9 with external power source is powered, and minipump 9 is arranged at outer on casing 19 by electrical connection
Connect vavuum pump socket 21 and carry out power taking, moreover it is possible to which minipump 9 is controlled by the micro vacuum switch pump being arranged on casing 19
Start and stop, and low-voltage circuit equipment is powered using 24V batteries simultaneously.
In the present embodiment, referring to Fig. 1 and Fig. 2, pressure-equalizing pipe 4 is also set up in multichannel sample collection gas circuit 1, is pressed
Dynamic balance pipe 4 and OVOCs absorption branch pipes 31~38 are arranged in parallel, one end and the multichannel sample collection of pressure-equalizing pipe 4
Gas circuit 1 is connected, and the other end of pressure-equalizing pipe 4 is connected by security solenoid valve 59 with exhaust main 103, decomposition pressure balance pipe
Road, master controller 10 is by controlling security solenoid valve 59 to control the stress level in the pipeline of sample collection system.Pressure is adjusted
Valve 6 is arranged on the back segment of multichannel sample collection gas circuit, is connected between each magnetic valve and gas flow controller 7, passes through stream
The opening degree of the valve of 7 feedback regulation regulating valve of quantity sensor 6, to adjust the pressure and flow in gas circuit, pressure-regulating valve 6,
Pressure in minipump 9 and multichannel sample collection gas circuit changes between maintaining 0.1~0.8MPa, maintains pipe-line system
Interior air pressure safe condition；
In the present embodiment, referring to Fig. 1 and Fig. 2, each magnetic valve for controlling each OVOCs absorption branch pipe 31~38 to be sampled
51~58 are respectively arranged in branch's rear end connecting tube 2.Above-mentioned pressure-regulating valve 6 is arranged on exhaust main 103.Gas flow
Controller 7 is arranged on exhaust main 103.Cooling system is three fans installed in the side of casing 19.
Referring to Fig. 1 and Fig. 2, OVOCs remote control automatic sampling apparatus of the present embodiment based on Internet of Things is mainly by air inlet
1,8 mouth 101, multichannel sample collection gas circuit connecting tube 102, the sampling pipe group that branch pipes 31~38 form is adsorbed by 8 OVOCs
3 and exhaust main 103 form multichannel sample collection gas circuit, wherein each connecting tube 102 and exhaust main 103 use Teflon
Pipeline, the gas circuit control unit being mainly made up of master controller 10, pressure-regulating valve 6 are set in multichannel sample collection gas circuit
With minipump 9, by Data Data record display device 8 with by a series of sensor groups into ambient parameter collecting unit adopt
Monitor set data, then the data transfer of collection is gone out by data transfer unit, make data by outside calculation machine or mobile terminal
18 are properly received.It is alternate path among multichannel sample collection air-channel system, 8 OVOCs absorption branch pipes 31~38 are connected to
The stage casing of multichannel sample collection gas circuit, the air inlet of minipump 9 are connected to multichannel sample collection gas circuit 101~103
Back segment exhaust main 103, be vented exhaust outlet, make to form stable air-flow, air-flow stream in multichannel sample collection gas circuit
During coated PFPH adsorbent Tenax-TA OVOCs absorption branch pipe 31~38, OVOCs therein is adsorbed；Magnetic valve 51
~59 are installed between the back segment of multichannel sample collection gas circuit and OVOCs absorption branch pipes 31~38, and multichannel sample is adopted
Between the back segment and pressure-equalizing pipe 4 that collect gas circuit, it is connected with the programmable microcomputer as master controller 10, realizes more logical
The automatic switchover on road；Pressure-regulating valve 6 is installed between magnetic valve 51~59 and gas mass flow controller 7, and it passes through number
According to transfer assembly 111 and outer computer or the communicating data of mobile terminal 18, the work of remote control pressure and flow velocity can be played
With；Gas mass flow controller 7, the data record display 8 being installed between pressure-regulating valve 6 and minipump 9, can
To record the flow number at sampling process each moment, data transfer assembly 111 realizes data with computer or mobile terminal 18
Communication；Being positioned in cabinet includes TVOCs sensors 13, ozone sensor 14, PM2.5Sensor 15, temperature sensor 16 and
Humidity sensor 17, data communication is realized also by data transfer assembly 111 and computer or mobile terminal 18；Remote control is believed
Number end 112 receives the communication signals of computers or mobile terminal 18, controls the opening and closing of whole machine power supply circuit；Power supply list
Member 12 uses 24V batteries to provide the energy for whole system；The signal input output end and data of computer or mobile terminal 18
Transport module 113 is connected, and receives gas mass flow controller 7, TVOCs sensors 13, ozone concentration sensor 14, PM2.5Pass
The data of sensor 15, temperature sensor 16 and humidity sensor 17, and control relay realizes the automation control of system power supply
System.In addition to computer or mobile terminal, the present embodiment all components are highly integrated inside a small-sized machine box, and size is not
More than 300*250*150mm, weight is no more than 10kg, can carried with, easy to use, in addition to computer or mobile terminal,
Remaining component is highly integrated to set air inlet in cabinet inside, casing, is connected with teflon pipe (PTFE), can be opened in casing 19
Take out outside casing during preparation for acquiring sample, kept at a distance with the inside other assemblies of casing 19, produced when avoiding sampling apparatus operation
Raw waste gas treats the influence for adopting OVOCs concentration in surrounding air.Multichannel sample collection gas circuit, be fixed on main frame and case lid it
Between, for the alternate path of middle opening, branch pipe 31~38 is adsorbed for connecting OVOCs.
In the present embodiment, referring to Fig. 1 and Fig. 2, OVOCs is adsorbed to be equipped with unidirectionally in the front and rear section gas circuit of branch pipe 31~38
Stop valve, every adsorption tube are in air-tight state after sampling is completed, avoid the pollution of sample, multichannel sample collection gas circuit
Stage casing is connected with pressure-equalizing pipe 4, and branch pipe is in parallel is located at gas circuit stage casing with OVOCs absorption, is quartz glass material, for Balance Air
Pressure oscillation caused by dataway operation, stability of flow in gas circuit when ensureing to sample；OVOCs absorption branch pipe 31~38, pressure balance
Magnetic valve 51~59 is equipped between pipe 4 and multichannel sample collection gas circuit back segment, the selection control of each branch road is realized, realizes more
The optional detection control of kind detection scheme.
OVOC sampling pipes are quartz glass or stainless steel tube, and specification is external diameter 6mm, internal diameter 4mm, length 80mm, uses PTFE
Pipe is connected among multi-path sampling gas circuit, filling coating PFPH Tenax-TA adsorbents inside quartz glass or stainless steel tube
80-100mg, granularity are 60/80 mesh, and PFPH is derivatization reagent, and can react generation on Tenax-TA surfaces with OVOCs
Fixedness PFPH derivatives, it is retained in OVOCs absorption branch pipes.It is equipped with before and after OVOCs absorption branch pipes in section gas circuit unidirectional
Stop valve, every OVOCs absorption branch pipe are in air-tight state after sampling is completed, avoid sample loss or pollution.
Referring to Fig. 1 and Fig. 2, the application of OVOCs remote control automatic sampling apparatus of the present embodiment based on Internet of Things, including
Following steps：
(1) the OVOCs absorption branch pipes 31~38 of coated derivatization reagent are connected in multichannel sample collection gas circuit,
As shown in Figure 1；
(2) master switch 20 of the automatic sampling apparatus set on the casing 19 of suitcase is opened, to automatic sampling apparatus
Power supply；
(3) sampling routine of programmable microcomputer is set by may be programmed microcomputer keyboard 81；
(4) by controlling the power of minipump 9 and adjusting pressure-regulating valve 6, make from multichannel sample collection gas circuit
It is evacuated, makes to form steady air flow in gas circuit, flows through the flat pipe 4 of pressure；In whole gas circuit, by adjusting pressure-regulating valve 6
With minipump 9,1 pressure changes between maintaining 0.1~0.8MPa in multichannel sample collection gas circuit.Closed after debugging is good
Close machine internal low-voltage circuit and minipump 9；
(5) ambient parameter that computer processing environment data acquisition unit collects, judged by computer or sample collector
Whether start to gather sample, and send control signal to master controller 10；
(6) ambient parameter that outer computer or the processing environment data acquisition unit of micro terminal 18 collect, judge big
Whether vaporous condition starts to gather sample.
Compared with prior art, the present embodiment device design structure is advanced rationally, and low-profile is portable and utilizes wireless network
Network builds Internet of Things, realizes the remote control of automatic sampler, the record of sampling flow and storage.Easy operation, specially
Door is adapted to as field sampling, automatic sampling website or sounding balloon sampling etc., it has not been convenient to which operating personnel are on duty or artificial nothing
The scene that method is completed.
Embodiment two：
The present embodiment and embodiment one are essentially identical, are particular in that：
In the present embodiment, using the OVOCs remote control automatic sampling apparatus based on Internet of Things, in atmospheric environment or cigarette
OVOCs observation is carried out when fog chamber is simulated, it is specific as follows：
Multichannel sample collection gas circuit is controlled, realizes sample rate 50mL/min, was gathered within 3 hours at equal intervals in 24 hours
8 groups of samples, OVOCs absorption branch pipes 31~38 are quartz glass tube, and length 80mm, internal diameter 4mm, external diameter 6mm, inside is filled out
Tenax-TA adsorbents filled with 80-100mg are simultaneously coated with PFPH derivatization reagents.
In the present embodiment, to reach required function, OVOCs absorption branch pipes 31~38 are connected to multichannel sample first
In the connecting tube 102 for gathering the stage casing of gas circuit, the program of programmable microcomputer is set：
1. opening the magnetic valve 59 of connection pressure-equalizing pipe 4, and make the electromagnetism of each OVOCs absorption branch pipe 31~38 of connection
Valve 51~58 is closed, and continues 10s；
2. first magnetic valve 51 for wherein connecting first OVOCs absorption branch pipe 31 is opened, make other magnetic valves
52~59 all close, and continue 3h；
3. second magnetic valve 52 for wherein connecting second OVOCs absorption branch pipe 32 is opened, make other magnetic valves
51st, 53~59 close, continue 3h；
4. the 3rd magnetic valve 53 for wherein connecting the 3rd OVOCs absorption branch pipe 33 is opened, make other magnetic valves
51~52,54~59 close, and continue 3h；
5. the 4th magnetic valve 54 for wherein connecting the 4th OVOCs absorption branch pipe 34 is opened, make other magnetic valves
51~53,55~59 close；
6. the 5th magnetic valve 55 for wherein connecting the 5th OVOCs absorption branch pipe 35 is opened, make other magnetic valves
51~54,56~59 close, and continue 3h；
7. the 6th magnetic valve 56 for wherein connecting the 6th OVOCs absorption branch pipe 36 is opened, make other magnetic valves
51~55,57~59 close, and continue 3h；
8. the 7th magnetic valve 57 for wherein connecting the 7th OVOCs absorption branch pipe 37 is opened, make other magnetic valves
51~56,58~59 close, and continue 3h；
9. the 8th magnetic valve 58 for wherein connecting the 8th OVOCs absorption branch pipe 38 is opened, magnetic valve 51~57,59
Close, continue 3h；
10. the magnetic valve 59 for connecting pressure-equalizing pipe 4 is opened, other magnetic valves 51~58 are closed, continue 99h, this
Step operation is to close system power supply forward horizontal stand system pressure, reaching the purpose of protection vavuum pump.
It is above-mentioned after setting completed, adjusting minipump 9 and pressure-regulating valve 6 makes multichannel sample collection gas circuit interior air-flow
50mL/min is stabilized to, total power switch 20 is then shut off, makes power-off.When needing sampling, pass through computer or mobile whole
End 18 is sent to automatic sampler starts sample command, and automatic sampler is started to sample by setting program.Now air-flow is by entering
Gas port 101, through wherein connecting first check valve 28 of first OVOCs absorption branch pipe 31, pass through first OVOCs absorption branch
Pipe 31, first magnetic valve 51 of first OVOCs absorption branch pipe 31 of connection is flowed through, is finally discharged from minipump 9.Then
At interval of 3h, waste gas is discharged outside case by the fan of casing.Air-flow conversion path flows through 8 OVOCs absorption branch pipes 31~38 successively,
Complete whole sampling flow.
Embodiment three：
The present embodiment is substantially the same as in the previous example, and is particular in that：
In the present embodiment, using the OVOCs remote control automatic sampling apparatus based on Internet of Things, burst pollution thing is realized
Part samples evidence obtaining, sample rate 1000mL/min, sampling interval 1h automatically.8 OVOCs absorption branch pipes 31~38 are using commercialization
DNPH silicone tubes.
To reach required function, DNPH silicone tubes are connected to the connecting tube in the stage casing of multichannel sample collection gas circuit first
102, the program for setting programmable microcomputer is：
1. opening the magnetic valve 59 of connection pressure-equalizing pipe 4, and make the electromagnetism of each OVOCs absorption branch pipe 31~38 of connection
Valve 51~58 is closed, and continues 10s；
2. first magnetic valve 51 for wherein connecting first OVOCs absorption branch pipe 31 is opened, make other magnetic valves
52~59 all close, and continue 1h；
3. second magnetic valve 52 for wherein connecting second OVOCs absorption branch pipe 32 is opened, make other magnetic valves
51st, 53~59 close, continue 1h；
4. the 3rd magnetic valve 53 for wherein connecting the 3rd OVOCs absorption branch pipe 33 is opened, make other magnetic valves
51~52,54~59 close, and continue 1h；
5. the 4th magnetic valve 54 for wherein connecting the 4th OVOCs absorption branch pipe 34 is opened, make other magnetic valves
51~53,55~59 close；
6. the 5th magnetic valve 55 for wherein connecting the 5th OVOCs absorption branch pipe 35 is opened, make other magnetic valves
51~54,56~59 close, and continue 1h；
7. the 6th magnetic valve 56 for wherein connecting the 6th OVOCs absorption branch pipe 36 is opened, make other magnetic valves
51~55,57~59 close, and continue 1h；
8. the 7th magnetic valve 57 for wherein connecting the 7th OVOCs absorption branch pipe 37 is opened, make other magnetic valves
51~56,58~59 close, and continue 1h；
9. the 8th magnetic valve 58 for wherein connecting the 8th OVOCs absorption branch pipe 38 is opened, magnetic valve 51~57,59
Close, continue 1h；
10. the magnetic valve 59 for connecting pressure-equalizing pipe 4 is opened, other magnetic valves 51~58 are closed, continue 99h, this
Step operation is to close system power supply forward horizontal stand system pressure, reaching the purpose of protection vavuum pump.
It is above-mentioned after setting completed, adjust minipump 9 and pressure-regulating valve 6, make gas in multichannel sample collection gas circuit
Stream stabilizes to 1000mL/min.Total power switch 20 is then shut off, makes power-off, is set by computer or mobile terminal 18
TVOCs, ozone, PM in ambient parameter2.5When exceeding setting value Deng numerical value, send close to remote data control signal end 112 immediately
Control signal is closed, starts to sample by program is set.
Now air-flow is by air inlet 101, through wherein connecting first check valve 28 of first OVOCs absorption branch pipe 31,
Branch pipe 31 is adsorbed by first OVOCs, flows through first magnetic valve 51 of first OVOCs absorption branch pipe 31 of connection, finally
Discharged from minipump 9.Then discharged at interval of 1h, waste gas by the fan of casing outside case.Air-flow conversion path flows through 8 successively
The OVOCs absorption branch pipes 31~38 of root DNPH silicone tubes, complete whole sampling flow.
The utility model embodiment is illustrated above in conjunction with accompanying drawing, but the utility model is not limited to above-mentioned implementation
Example, a variety of changes can also be made according to the purpose that utility model of the present utility model is created, it is all according to the utility model technology
Change, modification, replacement, combination or the simplification made under the Spirit Essence and principle of scheme, should be equivalent substitute mode, as long as
Meet purpose of utility model of the present utility model, without departing from OVOCs remote control of the utility model based on Internet of Things certainly
The technical principle of dynamic sampling apparatus and utility model design, belong to the scope of protection of the utility model.
Claims (10)
- A kind of 1. OVOCs remote control automatic sampling apparatus based on Internet of Things, using the portable case provided with air inlet (101) Body (19), it is characterised in that：Set power control unit (12), sample collection system, gas circuit control single inside casing (19) Member, data record unit, ambient parameter unit, data transfer unit, input/output unit and cooling system, it is specially：The power control unit (12) is after the control signal sent by master controller (10) is received, the closure of energy control circuit Or disconnect, and then control the break-make of the way circuit of automatic sampling apparatus；The sample collection system mainly includes minipump (9) and multichannel sample collection gas circuit (1), the multichannel sample A series of OVOCs absorption branch pipes (31~38), each OVOCs are set using parallel in product collection gas circuit (1) Absorption branch pipe (31~38) is respectively coated different derivatization reagents according to the difference of detection target compound, as different target The sampling pipe group (3) of compound, the minipump (9) are controlled by master controller (10)；The gas circuit control unit controls a series of breather check valves (21~28) and a series of rows by the master controller (10) The break-make of gas check valve (209~216), each breather check valve (21~28) corresponds to respectively is arranged on each OVOCs suctions In the connecting tube (102) that the inlet end of attached branch pipe (31~38) connects with multichannel sample collection gas circuit (1), each exhaust is single Corresponded to respectively to valve (209~216) branch's rear end connecting tube (2) installed in each OVOCs absorption branch pipe (31~38) with In the connecting tube of exhaust main (103) connection, rear end exhaust outlet and the minipump (9) of the exhaust main (103) Air entry connection, the exhaust outlet of the minipump (9) can discharge tail gas, each OVOCs absorption branch pipe (31~ 38) magnetic valve (51~58) is correspondingly arranged on end connecting line, is passed through between each OVOCs absorption branch pipes (31~38) The master controller (10) of the gas circuit control unit controls each magnetic valve (51~58) to switch over, and realizes and controls different institutes State OVOCs absorption branch pipe (31~38) automatic samplings to collect, set pressure-regulating valve (6) in the gas circuit control unit Adjust the pressure in gas circuit；Data record unit mainly includes gas flow controller (7) and data record display device (8), the gas flow control Device (7) is arranged in the gas circuit control unit, and the gas flow controller (7) connects with the master controller (10) signal Connect, the master controller (10) is connected with data record display (8) signal, and the data record display (8) shows Display screen (82), the data record unit is formed by the gas flow controller (7) and the data record display (8), Master controller (10) the control data recording unit is read out and stored sample information；The ambient parameter unit is TVOCs sensors (13), ozone sensor (14), PM2.5Sensor (15), TEMP The combination of device (16) and any one sensor or any several sensors in humidity sensor (17), the ambient parameter list It is first to be connected with the master controller (10) signal；The data transfer unit includes data transfer assembly (111), and the master controller (10) transmits group by control data The data transmission module (113) of part (111) and outer computer or mobile terminal (18) realizes data communication；The input/output unit includes the keyboard (81) and the display screen (82) being arranged on the casing (19), the key Disk (81) is connected with the master controller (10) signal；The cooling system radiates for automatic sampling apparatus.
- 2. the OVOCs remote control automatic sampling apparatus based on Internet of Things according to claim 1, it is characterised in that：It is described The power supply circuit of power control unit (12) control is divided into two-way, and first via circuit controls low inside whole automatic sampling apparatus The opening and closing of volt circuit, the second road circuit control the opening and closing of the minipump (9), the power supply as high-tension circuit Unit (12) can open two-way circuit simultaneously after the control signal that the master controller (10) is sent is received, or respectively Individually open low-voltage circuit or high-tension circuit.
- 3. the OVOCs remote control automatic sampling apparatus based on Internet of Things according to claim 2, it is characterised in that：It is described Power control unit (12) includes two relays, and each master controller (10) is by control relay, and control is whole respectively The opening and closing of high-tension circuit where the low-voltage circuit of automatic sampling apparatus and the minipump (9).
- 4. the OVOCs remote control automatic sampling apparatus based on Internet of Things according to claim 2, it is characterised in that：It is described Data transfer unit also includes remote control signal end (112), the remote control signal end (112) and the master controller (10) signal connects, and the remote control signal end (112) can receive the control that outer computer or mobile terminal (18) are sent Instruction, controls the opening and closing of the low-voltage circuit or high-tension circuit of whole automatic sampling apparatus.
- 5. the OVOCs remote control automatic sampling apparatus based on Internet of Things according to any one in Claims 1 to 4, its It is characterised by：The power control unit (12) is connected by the external socket (21) being arranged on casing (19) with external power source It is powered, or is powered using battery.
- 6. the OVOCs remote control automatic sampling apparatus based on Internet of Things according to any one in Claims 1 to 4, its It is characterised by：Also set up pressure-equalizing pipe (4) in the multichannel sample collection gas circuit (1), the pressure-equalizing pipe (4) with OVOCs absorption branch pipes (31~38) are arranged in parallel, one end and the multichannel sample collection gas circuit of the pressure-equalizing pipe (4) (1) connect, the other end of the pressure-equalizing pipe (4) is connected by security solenoid valve (59) with the exhaust main (103), group Into pressure balance pipeline, the master controller (10) is by controlling security solenoid valve (59) to control in the pipeline of sample collection system Stress level.
- 7. the OVOCs remote control automatic sampling apparatus based on Internet of Things according to any one in Claims 1 to 4, its It is characterised by：Each magnetic valve (51~58) point that each OVOCs absorption branch pipes (31~38) of control are sampled It is not arranged in branch rear end connecting tube (2).
- 8. the OVOCs remote control automatic sampling apparatus based on Internet of Things according to any one in Claims 1 to 4, its It is characterised by：The pressure-regulating valve (6) is arranged on the exhaust main (103).
- 9. the OVOCs remote control automatic sampling apparatus based on Internet of Things according to any one in Claims 1 to 4, its It is characterised by：The gas flow controller (7) is arranged on the exhaust main (103).
- 10. the OVOCs remote control automatic sampling apparatus based on Internet of Things according to any one in Claims 1 to 4, its It is characterised by：The cooling system is the fan installed in the casing (19) side.
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| CN201720305759.XU CN206710157U (en) | 2017-03-28 | 2017-03-28 | OVOCs remote control automatic sampling apparatus based on Internet of Things |
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|---|---|---|---|
| CN201720305759.XU CN206710157U (en) | 2017-03-28 | 2017-03-28 | OVOCs remote control automatic sampling apparatus based on Internet of Things |
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| CN108106887A (en) * | 2017-12-28 | 2018-06-01 | 清华大学 | Motor-vehicle tail-gas particulate matter and volatile organic contaminant divided working status sampling system |
| CN108168955A (en) * | 2018-03-21 | 2018-06-15 | 阳江核电有限公司 | The accumulation sampling system and method for tritiated vapor in a kind of air |
| CN109900529A (en) * | 2019-04-11 | 2019-06-18 | 优泰科技（深圳）有限公司 | The method of sampling and device for gaseous sample sampling |
| CN110836790A (en) * | 2019-11-18 | 2020-02-25 | 核工业北京化工冶金研究院 | Multi-channel automatic measuring device and method for centralized control room of in-situ leaching uranium mining area |
| CN112161845A (en) * | 2020-09-04 | 2021-01-01 | 南京信息工程大学 | Protection device of DNPH sampling column |
| CN112504774A (en) * | 2020-12-29 | 2021-03-16 | 武汉区域气候中心 | Wireless remote control portable greenhouse gas bottle sampling method and sampling device thereof |
| CN113358423A (en) * | 2021-05-20 | 2021-09-07 | 合肥学院 | Quasi-continuous environment atmospheric gas sampling device |
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- 2017-03-28 CN CN201720305759.XU patent/CN206710157U/en active Active
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108106887A (en) * | 2017-12-28 | 2018-06-01 | 清华大学 | Motor-vehicle tail-gas particulate matter and volatile organic contaminant divided working status sampling system |
| CN108106887B (en) * | 2017-12-28 | 2024-04-09 | 清华大学 | System for sampling particulate matters and volatile organic pollutants in tail gas of motor vehicle according to working conditions |
| CN108168955A (en) * | 2018-03-21 | 2018-06-15 | 阳江核电有限公司 | The accumulation sampling system and method for tritiated vapor in a kind of air |
| CN109900529A (en) * | 2019-04-11 | 2019-06-18 | 优泰科技（深圳）有限公司 | The method of sampling and device for gaseous sample sampling |
| CN110836790A (en) * | 2019-11-18 | 2020-02-25 | 核工业北京化工冶金研究院 | Multi-channel automatic measuring device and method for centralized control room of in-situ leaching uranium mining area |
| CN112161845A (en) * | 2020-09-04 | 2021-01-01 | 南京信息工程大学 | Protection device of DNPH sampling column |
| CN112504774A (en) * | 2020-12-29 | 2021-03-16 | 武汉区域气候中心 | Wireless remote control portable greenhouse gas bottle sampling method and sampling device thereof |
| CN113358423A (en) * | 2021-05-20 | 2021-09-07 | 合肥学院 | Quasi-continuous environment atmospheric gas sampling device |
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