CN109189128A - A kind of environmental monitoring and automatic control device - Google Patents
A kind of environmental monitoring and automatic control device Download PDFInfo
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- CN109189128A CN109189128A CN201811073715.4A CN201811073715A CN109189128A CN 109189128 A CN109189128 A CN 109189128A CN 201811073715 A CN201811073715 A CN 201811073715A CN 109189128 A CN109189128 A CN 109189128A
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- 230000007613 environmental effect Effects 0.000 title claims abstract description 23
- 238000012544 monitoring process Methods 0.000 title claims abstract description 23
- 239000007789 gas Substances 0.000 claims abstract description 60
- 239000001301 oxygen Substances 0.000 claims abstract description 56
- 229910052760 oxygen Inorganic materials 0.000 claims abstract description 56
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims abstract description 54
- 238000012545 processing Methods 0.000 claims abstract description 34
- 238000005070 sampling Methods 0.000 claims abstract description 26
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 37
- 229910052757 nitrogen Inorganic materials 0.000 claims description 17
- 238000004891 communication Methods 0.000 claims description 11
- 229910001873 dinitrogen Inorganic materials 0.000 claims description 3
- 230000010354 integration Effects 0.000 abstract description 5
- 230000000694 effects Effects 0.000 abstract description 4
- 238000009434 installation Methods 0.000 abstract description 2
- 238000000034 method Methods 0.000 description 14
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 6
- 238000004378 air conditioning Methods 0.000 description 6
- 230000008859 change Effects 0.000 description 5
- 229960004424 carbon dioxide Drugs 0.000 description 4
- 230000033228 biological regulation Effects 0.000 description 3
- 229910002092 carbon dioxide Inorganic materials 0.000 description 3
- 239000001569 carbon dioxide Substances 0.000 description 3
- 238000001035 drying Methods 0.000 description 3
- 238000001514 detection method Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 238000005057 refrigeration Methods 0.000 description 2
- 235000001674 Agaricus brunnescens Nutrition 0.000 description 1
- 238000004887 air purification Methods 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 229910002090 carbon oxide Inorganic materials 0.000 description 1
- 230000006837 decompression Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 239000000284 extract Substances 0.000 description 1
- 230000030279 gene silencing Effects 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 230000004630 mental health Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000000505 pernicious effect Effects 0.000 description 1
- 230000029553 photosynthesis Effects 0.000 description 1
- 238000010672 photosynthesis Methods 0.000 description 1
- 230000008635 plant growth Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 230000000153 supplemental effect Effects 0.000 description 1
- 239000002341 toxic gas Substances 0.000 description 1
Classifications
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
- G05D27/00—Simultaneous control of variables covered by two or more of main groups G05D1/00 - G05D25/00
- G05D27/02—Simultaneous control of variables covered by two or more of main groups G05D1/00 - G05D25/00 characterised by the use of electric means
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Automation & Control Theory (AREA)
- Air Conditioning Control Device (AREA)
Abstract
The present invention discloses a kind of environmental monitoring and automatic control device.Described device includes: central processing unit, the gas sampling unit and execution unit being connected with central processing unit, gas sampling unit includes the air pump being connected by admission line with controlled environment and the oxygen concentration sensor being arranged in air pump outlet pipe, gas concentration lwevel sensor, temperature sensor and humidity sensor, and execution unit includes the oxygen concentration adjuster to work under central processing unit controls, gas concentration lwevel adjuster, thermoregulator and humidistat.The present invention realizes the monitoring and automatic control to controlled environment many index, improves Environmental Control Effect;By the gas sampling unit of setting installation sensor, sensor is mounted on except controlled environment, described device is made to be easy to integration.
Description
Technical field
The invention belongs to environment measurings and protection technique field, and in particular to a kind of environmental monitoring and automatic control device.
Background technique
Environment is the primary condition that earth surface all lived substances are depended on for existence.None good environment, people
The existence and its social activities of class are just unable to maintain that down that the photosynthesis of plant not can be carried out, and other biologies have not existed yet.
So ingredient, property are all changed after environment is by polluting, this will certainly be to human health, animal and plant growth
Life and the storage of the ecological balance or even various implements generate harmful influence.In recent years, with the development of urban industry, ring
Border pollution is got worse, and air quality further deteriorates, and not only jeopardizes the normal life of people, but also seriously threaten people
Physical and mental health.
In order to which the environment of protecting us to depend on for existence is from pollution, environmental monitoring is grown rapidly with control technology,
The Detection & Controling device of various pernicious gases emerges one after another like the mushrooms after rain.But air purification effect is unsatisfactory, one
As a kind of or seldom several indexs can only be detected and controlled, and the arrangement of Detection & Controling device is more dispersed
(sensor is generally located on control scene), is unfavorable for the integration of device.
Summary of the invention
In order to solve the above-mentioned problems in the prior art, the present invention proposes that one kind can be monitored many index
With the device of automatic control.
To achieve the above object, the present invention adopts the following technical scheme:
A kind of environmental monitoring and automatic control device, comprising: central processing unit, the gas being connected with central processing unit
Sampling unit and execution unit, wherein
Central processing unit, for handle and export control signal to execution to the data from gas sampling unit
Unit.
Gas sampling unit including the air pump being connected by admission line with controlled environment, and is arranged in air pump escape pipe
Oxygen concentration sensor, gas concentration lwevel sensor, temperature sensor and humidity sensor in road, air pump will be for that will be controlled
Air in environment is extracted out in real time as sample gas.
Execution unit, including oxygen concentration adjuster, the gas concentration lwevel tune to work under central processing unit controls
Save device, thermoregulator and humidistat.
Further, described device further includes the parameter preset connecting with central processing unit, for showing controlled environment
With the display unit of real-time parameter (parameter measured in real time).
Further, described device further include connect with central processing unit for host computer, gas sampling unit and
The wireless communication module that execution unit is wirelessly connected.
Further, the oxygen concentration adjuster includes source of oxygen and source nitrogen.
Further, the source of oxygen includes oxygenerator, oxygen cylinder, oxygen tank, the first pressure reducing valve and the first solenoid valve
Or the first motor-driven valve of opening size continuously adjustable, the source nitrogen include nitrogen making machine, nitrogen cylinder, nitrogen gas tank, the second decompression
Second motor-driven valve of valve and second solenoid valve or opening size continuously adjustable.
Further, the gas concentration lwevel adjuster is air blower.
Further, the thermoregulator is air-conditioning and/or heater.
Further, the humidistat is drying machine and/or humidifier.
Further, the central processing unit be specifically used for calculate separately controlled environment each parameter preset and in real time
The difference of parameter, and corresponding adjuster is output control signals to respectively, so that adjustment speed is proportional to the difference, when the difference
Stop adjusting when value is 0.
Compared with prior art, the invention has the following advantages:
A kind of environmental monitoring proposed by the present invention and automatic control device, by setting central processing unit and with center
Processing unit connected gas sampling unit and execution unit, realize the monitoring and automatic control to controlled environment.The present invention
It is passed by the way that oxygen concentration sensor, gas concentration lwevel sensor, temperature sensor and humidity are arranged in gas sampling unit
Oxygen concentration adjuster, gas concentration lwevel adjuster, thermoregulator and humidity regulation is arranged in sensor in execution unit
Device realizes monitoring and automatic control to controlled environment many index, improves Environmental Control Effect;It is passed by setting installation
The gas sampling unit of sensor, sensor is mounted on except controlled environment, and described device is made to be easy to integration.
Detailed description of the invention
Fig. 1 is the block diagram of a kind of environmental monitoring and automatic control device of the embodiment of the present invention.
In figure: 1- central processing unit, 2- gas sampling unit, 21- oxygen concentration sensor, 22- gas concentration lwevel
Sensor, 23- temperature sensor, 24- humidity sensor, 25- air pump, 3- execution unit, 31- oxygen concentration adjuster, 32- bis-
Carbonoxide consistencyregulator, 33- thermoregulator, 34- humidistat.
Specific embodiment
The present invention is described in further detail below in conjunction with the accompanying drawings.
The block diagram of a kind of environmental monitoring of the embodiment of the present invention and automatic control device is as shown in Figure 1, described device includes:
Central processing unit 1, the gas sampling unit 2 and execution unit 3 being connected with central processing unit 1, in which:
Central processing unit 1, for handle and export control signal to holding to the data from gas sampling unit 2
Row unit 3.
Gas sampling unit 2 goes out including the air pump 25 being connected by admission line with controlled environment, and setting in air pump 25
Oxygen concentration sensor 21, gas concentration lwevel sensor 22, temperature sensor 23 and humidity sensor 24 in feed channel, gas
Pump 25 is for extracting out the air in controlled environment in real time as sample gas.
Execution unit 3, oxygen concentration adjuster 31, carbon dioxide including working under the control of central processing unit 1 are dense
Spend adjuster 32, thermoregulator 33 and humidistat 34.
In the present embodiment, described device is mainly by central processing unit 1, gas sampling unit 2 and 3 groups of execution unit
At.Central processing unit 1 is data processing and the control centre of described device, is mainly used for each from gas sampling unit 2
The data of a sensor are handled, and are calculated the real-time parameter of controlled environment, are output control signals to each tune of execution unit 3
Section device controls controlled environment, that is, automatically adjusts the parameter of controlled environment.Controlled environment can be indoor environment, such as machine
Room, laboratory, greenhouse etc.;It is also possible to outdoor or field environment, such as the tent in field;It can also be the simulated environment of building,
Such as a plateau simulated environment is established on ground.It sets in controlled environment there are two types of pipeline, one is thinner air pump pump-line,
One is execution units 3 (such as oxygen concentration adjuster 31) to inject the thicker pipeline of gas (such as oxygen) into controlled environment.
In order to be uniformly distributed the gas in controlled environment, these pipelines are distributed in controlled environment in multiple spot by increasing threeway, must
Silencing means is installed additional in gas outlet when wanting.Controlled environment is generally intentionally set to completely enclosed shape by existing environmental control system
Controlled environment is arranged to opposing seal unless controlled environment objective requirement must be fully sealed by state, the embodiment of the present invention.In this way
The requirement for reducing controlled environmental structure is set not only, and is conducive to gas in controlled environment and keeps fresh.In addition, controlled ring
Local and overseas atmospheric pressure is equal, sensor can be mounted on outside controlled environment, be had in the application scenarios for needing to measure atmospheric pressure
Conducive to the integration of device.Gas sampling unit 2 is mainly used for acquiring the parameter signal of controlled environment in real time, as oxygen concentration is believed
Number.Sensor is arranged in controlled ambient scene compared with the existing technology, the gas sampling unit 2 of the embodiment of the present invention passes through
Air pump 25 extracts the gas in controlled environment out in real time, sensor is mounted in the outlet pipe of air pump 25,25 escape pipe of air pump
Gas parameter in road is identical as the gas parameter in controlled environment, realizes the separation of sensor Yu controlled ambient scene, has
Conducive to the integration of described device.In order to make the pumping of air pump 25 not change the parameter of controlled environment, air pump 25 generally uses micro- gas
Pump, keeps the sucking rate of unit time small as far as possible.Certainly, in order to guarantee the gas parameter in gas sampling unit 2 and controlled environment
Interior gas parameter is consistent, it is sometimes desirable to which admission line and outlet pipe to air pump 25 carry out isothermal holding.Execution unit 3 is main
It is used to adjust the parameter of controlled environment under the control of central processing unit 1, controlled ring is such as reduced by injection fresh air
The concentration of domestic carbon dioxide reduces the temperature etc. in controlled environment by refrigeration.
It is worth noting that the present embodiment both can in controlled environment oxygen concentration, gas concentration lwevel, temperature and
In humidity any one, two or three of parameter controlled, can also simultaneously four kinds of parameters are controlled.Separately
Outside, the present embodiment is not limited to monitoring and control to above-mentioned four kinds of parameters, by increasing sensor and corresponding adjuster, also
Function Extension can be realized to the monitoring and control of other parameters such as atmospheric pressure, toxic gas content.
As a kind of alternative embodiment, described device further includes connecting with central processing unit 1, for showing controlled environment
Parameter preset and real-time parameter display unit.
In the present embodiment, described device further includes display unit.The display unit mainly by with central processing unit 1
The display of connection forms, and is mainly used for the parameter for showing the parameter preset of controlled environment and measuring in real time, such as preset actual measurement
Oxygen concentration, gas concentration lwevel, temperature and humidity.Certainly, display unit can also be used to show human-computer interaction interface.
As a kind of alternative embodiment, described device further include connect with central processing unit 1 for host computer, gas
The wireless communication module that sampling unit 2 and execution unit 3 are wirelessly connected.
In the present embodiment, described device further includes wireless communication module.Wireless communication module can be telecommunication
Module is also possible to proximity communication module (such as Bluetooth communication), for realizing central processing unit 1 and host computer, gas sampling
The transmission of the data of unit 2 and execution unit 3.The main wireless communication core by being connect with central processing unit 1 of wireless communication module
Piece and the wireless communication chips composition that 3 end of host computer, gas sampling unit 2 and execution unit is set.Radio communication mold is set
Block can exempt the limitation of wired connection, make the erection of described device and using more convenient.
As a kind of alternative embodiment, the oxygen concentration adjuster 31 includes source of oxygen and source nitrogen.
This gives a kind of better embodiment of oxygen concentration adjuster 31, the oxygen concentration adjuster 31
Including source of oxygen and source nitrogen.In many environment oxygen concentration can neither it is too low can not be excessively high, it is required that control one
Determine range.The source of oxygen of the present embodiment is used for when the oxygen concentration of the controlled environment measured in real time is lower than preset lower limit value,
To controlled environment supplemental oxygen;The oxygen concentration that the source nitrogen of the present embodiment is used to measure in real time is higher than preset upper limit value
When, nitrogen is injected to controlled environment.
As a kind of alternative embodiment of a upper embodiment, the source of oxygen includes oxygenerator, oxygen cylinder, oxygen tank,
First motor-driven valve of one pressure reducing valve and the first solenoid valve or opening size continuously adjustable, the source nitrogen include nitrogen making machine, nitrogen
Second motor-driven valve of gas cylinder, nitrogen gas tank, the second pressure reducing valve and second solenoid valve or opening size continuously adjustable.
The source of oxygen of an embodiment and a kind of specific embodiment of source nitrogen is set forth in the present embodiment.Source of oxygen
First including oxygenerator, oxygen cylinder, oxygen tank, the first pressure reducing valve and the first solenoid valve or opening size continuously adjustable is electronic
Valve.The trouble of frequent more exchange device is eliminated using oxygenerator.The purpose that solenoid valve or motor-driven valve is arranged is realized to source of oxygen
The automatic control of oxygen supply.Solenoid valve can only generally carry out switching control, and motor-driven valve can constantly carry out switching control, moreover it is possible to even
It is continuous to adjust its opening size.It, can by changing the switching time ratio of the first solenoid valve or changing the opening size of the first motor-driven valve
To adjust the speed of oxygen supply of source of oxygen.The composition of source nitrogen is similar with source of oxygen, and which is not described herein again.
As a kind of alternative embodiment, the gas concentration lwevel adjuster 32 is air blower.
This gives a kind of better embodiments of gas concentration lwevel adjuster 32, i.e., are adjusted using air blower
The gas concentration lwevel of controlled environment.When the gas concentration lwevel of the controlled environment measured in real time is more than preset upper limit value,
Starting air blower injects the fresh air of outside into controlled environment, reduces carbon dioxide content.
As a kind of alternative embodiment, the thermoregulator 33 is air-conditioning and/or heater.
This gives the better embodiments of thermoregulator 33, adjust controlled environment using air-conditioning or heater
Temperature.When controlled environment only limits minimum temperature, heated up using heater;When controlled environment only limits maximum temperature,
Using air-conditioning temperature-reducing;When the control of controlled environmental requirement temperature is within the scope of one, while air-conditioning and heater are set, certainly
It can use while have the air-conditioning of refrigeration and heat-production functions.
As a kind of alternative embodiment, the humidistat 34 is drying machine and/or humidifier.
This gives the better embodiments of humidistat 34, adjust quilt using drying machine and/or humidifier
Control the humidity of environment.
As a kind of alternative embodiment, the central processing unit 1 is specifically used for calculating separately each pre- of controlled environment
The difference of setting parameter and real-time parameter, and corresponding adjuster is output control signals to respectively, it is proportional to adjustment speed described
Difference stops adjusting when the difference is 0.
This gives the specific methods controlled controlled environment.Simplest control method be when some or
When measured value, that is, the real-time parameter and parameter preset of several parameters are not inconsistent, start corresponding adjuster and at the uniform velocity adjusted, work as reality
When parameter close corresponding adjuster when being consistent with parameter preset and stop adjusting.It but is a delay system by controlled environment, i.e.,
Parameter is in dynamic change in adjustment process, even if stopping adjusting, corresponding parameter will not stop changing immediately, therefore at the uniform velocity adjust
Section can not achieve the desired results.The method that the present embodiment provides is the difference of adjustment speed and parameter preset and real-time parameter at just
Than difference is bigger, and adjusting is faster, and the initial phase adjustment speed adjusted in this way is most fast, can make corresponding parameter fast approaching
Preset value;With the reduction of the difference, gradually slow down adjustment speed, when it is that real-time parameter is equal to parameter preset that difference, which is 0,
Adjustment speed is also that 0 i.e. stopping is adjusted, and at this moment relevant parameter will not be further continued for changing.
The adjusting method of four kinds of parameters is essentially identical, illustrates the setting of adjustment speed by taking the adjusting of oxygen concentration as an example below
Method.As previously mentioned, there are two types of the adjusting methods of oxygen concentration: one is change to adjust by control solenoid valve make-and-break time ratio
The on-off valve regulation method of speed;Method is continuously adjusted one is the opening size change adjustment speed by continuously adjusting motor-driven valve.
It discusses respectively to two methods below.
1, on-off valve regulation method
Assuming that make and break period is T seconds, then turn-on time of n-th of make and break period are as follows:
T (n)=T* (Y-y (n-1))/(Y-y (0)) (1)
In formula, t (n) is the turn-on time of n-th of make and break period, and unit is the second, and Y is preset oxygen concentration, and y (0) is adjusted
The oxygen concentration measured in real time when section starting, the oxygen concentration that y (n-1) is measured in real time when being (n-1)th make and break period, n=0,
1,2 ... ....
It is obtained by (1) formula, t (1)=T, when starting to adjust, difference maximum solenoid valve make-to-break ratio is maximum (only logical continuous);Work as y
(n-1)=Y when, t (n)=0, difference minimum (for 0) solenoid valve make-to-break ratio is minimum (only breaking obstructed), stops adjusting.
2, method is continuously adjusted
Assuming that the maximum opening of motor-driven valve is 1, and when the oxygen concentration measured in real time is y, the aperture k of motor-driven valve are as follows:
K=(Y-y)/(Y-y (0)) (2)
It is obtained by (2) formula, y=y (0) when starting to adjust, k=1, the maximum electronic valve opening of difference is maximum (being full of);Work as y=Y
When, k=0, the minimum electronic valve opening minimum (disconnection) of difference.
It is above-mentioned that only several specific embodiments in the present invention are illustrated, but can not be as protection model of the invention
Enclose, it is all according to the present invention in the equivalent change or modification made of design spirit or equal proportion zoom in or out, should all
Think to fall into protection scope of the present invention.
Claims (9)
1. a kind of environmental monitoring and automatic control device characterized by comprising central processing unit, with central processing unit
Connected gas sampling unit and execution unit, wherein
Central processing unit, for handle and export control signal to executing list to the data from gas sampling unit
Member;
Gas sampling unit including the air pump being connected by admission line with controlled environment and is arranged in air pump outlet pipe
Oxygen concentration sensor, gas concentration lwevel sensor, temperature sensor and humidity sensor, air pump is used for will be in controlled environment
Air extracted out in real time as sample gas;
Execution unit, including work under central processing unit controls oxygen concentration adjuster, gas concentration lwevel adjuster,
Thermoregulator and humidistat.
2. environmental monitoring according to claim 1 and automatic control device, which is characterized in that described device further includes in
Central Processing Unit connection, the parameter preset for showing controlled environment and real-time parameter display unit.
3. environmental monitoring according to claim 1 and automatic control device, which is characterized in that described device further includes in
Central Processing Unit connects the wireless communication module for being wirelessly connected with host computer, gas sampling unit and execution unit.
4. environmental monitoring according to claim 1 and automatic control device, which is characterized in that the oxygen concentration adjuster
Including source of oxygen and source nitrogen.
5. environmental monitoring according to claim 4 and automatic control device, which is characterized in that the source of oxygen includes oxygen processed
First motor-driven valve of machine, oxygen cylinder, oxygen tank, the first pressure reducing valve and the first solenoid valve or opening size continuously adjustable, it is described
Source nitrogen includes the of nitrogen making machine, nitrogen cylinder, nitrogen gas tank, the second pressure reducing valve and second solenoid valve or opening size continuously adjustable
Two motor-driven valves.
6. environmental monitoring according to claim 1 and automatic control device, which is characterized in that the gas concentration lwevel tune
Section device is air blower.
7. environmental monitoring according to claim 1 and automatic control device, which is characterized in that the thermoregulator is sky
Tune and/or heater.
8. environmental monitoring according to claim 1 and automatic control device, which is characterized in that the humidistat is dry
Dry machine and/or humidifier.
9. environmental monitoring described according to claim 1~any one of 8 and automatic control device, which is characterized in that described
Central processing unit is specifically used for calculating separately each parameter preset of controlled environment and the difference of real-time parameter, and exports respectively
Signal is controlled to corresponding adjuster, so that adjustment speed is proportional to the difference, stops adjusting when the difference is 0.
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Cited By (1)
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CN111483575A (en) * | 2020-04-13 | 2020-08-04 | 浙江水利水电学院 | Underwater closed cycle life support device and automatic control method thereof |
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