CN103512609A - Method and device for measuring indoor evaporation capacity in real-time and on-line mode - Google Patents
Method and device for measuring indoor evaporation capacity in real-time and on-line mode Download PDFInfo
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- CN103512609A CN103512609A CN201210418048.5A CN201210418048A CN103512609A CN 103512609 A CN103512609 A CN 103512609A CN 201210418048 A CN201210418048 A CN 201210418048A CN 103512609 A CN103512609 A CN 103512609A
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Abstract
The invention relates to a method and device for measuring evaporation capacity, in particular to a method and device for measuring indoor evaporation capacity in a real-time and on-line mode. The device comprises a temperature and humidity sensor, a wind speed and wind direction sensor, a channel gate, a buffer, an amplifier, a switcher, an analog-digital converter and a photon coupled isolator which are sequentially and electrically connected in series, and the channel gate is further connected with a microprocessor which is connected with a computer. The method comprises the steps that when measurement is conducted, the sensors are placed in an indoor space where fermenting material is stacked, analog signals measured by the sensors are sent to the analog-digital converter, digital signals sent by the analog-digital converter are processed by the computer, and signal output quantity of the sensors is controlled by a switching value signal module which controls the sensors to be switched on and switched off. The switching value signal module is further connected with the computer, and operation of the switching value signal module can be controlled by the computer in a remote mode. According to the method and device, evaporation capacity of the fermenting material is accurately measured, and remote and continuous control monitoring can be conducted. The method and device are not only used for measuring water vapour evaporation capacity of an aerobic fermentation factory, but also suitable for factories in which food cooking plants have the same evaporation phenomenon.
Description
Technical field
The present invention relates to assay method and the device of evaporation capacity, relate in particular to the method and apparatus of evaporation capacity in a kind of real-time online measuring cell
Background technology
Moisture is the basis of microbial life activity, is also the important technical parameter of aerobic fermentation (Composting treatment) process of the organic wastes such as mud, rubbish, ight soil, gardens pruning thing.Moisture evaporation directly affects the activity of microorganism, affects aerobic fermentation success or failure, referring to (Adani, 2002.Bioresource Technology, 83,173-179; Bernal et al., 2009.Bioresource Technology, 100,5444-5453).The water evaporation quantity of understanding sweat can judge the actual cases of dehydration of fermentation materials more intuitively in real time, contributes to grasp course of fermentation, Optimizing Process Parameters, therefore selects suitable evaporation capacity monitoring method and device particularly important to Fermentation Engineering.Yet present stage changes the general water percentage of only paying close attention to heap body itself of the moisture research of sludge organism aerobic fermentation, and the method and apparatus that detects aerobic fermentation Chang workshop water vapor flux or evaporation capacity about real-time online has not yet to see report.And, existing can measuring cell in the Weighing type evaporating dish of evaporation capacity adopt diverse location sampling, sampling process is loaded down with trivial details, can not real-time continuous determination data, referring to (Roderick et al., 2009.Geography Compass, 3,761-780), be not suitable for the mensuration that has the fermentation materials of microbial activities evaporation capacity
Summary of the invention
In order to overcome sampling error that position difference brings, to avoid loaded down with trivial details sampling and measuring process, realize indoor continuous automatic measurement.The invention provides the method and apparatus of evaporation capacity in a kind of real-time online measuring cell, the evaporation capacity that this determinator can on-line determination fermentation materials, and by terminal device records with show measurement result, realize automatic measurement and the record of evaporation capacity.For achieving the above object, method of the present invention as shown in Figure 1, is connected the measuring-signal output terminal of Temperature Humidity Sensor and wind speed wind direction sensor with the input end of analog to digital converter.Temperature, humidity output signal are two groups of 4～20mA electric currents, adopt special-purpose temperature-compensation circuit and linearization process circuit, one group of temperature that is converted into-40～80 ℃, and another group is converted into 0～99.9% humidity.Wind speed wind direction sensor output signal is two groups of 4～20mA electric currents, adopts linear conversion, and one group is converted into 0～359 ° of wind direction, and another group is converted into 0～60m/s wind speed; Adopt the data such as data collecting module collected temperature, humidity, wind speed and direction; Communication format can be selected RS232, RS422, RS485 or simulation output.The switching value signaling module of 8 passages is connected with the input end of humiture device sensor and wind speed wind direction sensor respectively, for controlling the unlatching and closure of sensor.The output terminal of analog to digital converter is connected with computing machine, and its data are processed by computing machine.Switching value signaling module is also connected with computing machine, and it operates by computer control.When the most important feature of the inventive method is measurement, sensor is placed in to the interior space that fermentation materials heap is deposited, has therefore avoided the destruction to fermentate stockpile body.Owing to having adopted computing machine to carry out data processing, thereby can carry out Long-distance Control measurement.Mensuration process is accurately convenient, can obtain in time data message.This method, except the water evaporation quantitative determination for aerobic fermentation factory, exists the factory of similar Evaporation Phenomenon applicable too to food cooking workshop etc.According to said method, the invention provides the device of evaporation capacity in a kind of real-time online measuring cell.It includes sensor, automatically controls and intelligent equipment, and primary structure is: sensor is comprised of humiture and wind speed wind direction sensor.The data such as temperature, humidity, wind speed and direction are by data collecting module collected, and data acquisition module is 16,8 passages.Sensor is connected with analog to digital converter, and analog to digital converter is connected with computing machine with switching value signaling module respectively.Its switching value signaling module is 8 passages, can carry out Long-distance Control.This device is also provided with scratch pad memory, and therefore, after power supply breaks down, data are still kept in microprocessor.
Accompanying drawing explanation
Fig. 1 is the inventive method block diagram.
Fig. 2 is that the concrete scheme of apparatus of the present invention connects conversion schematic diagram
In figure: 1. Temperature Humidity Sensor, 2. wind speed wind direction sensor, 3. analog to digital converter, 4. switching value signaling module 5. computing machine 6.8 passage gates, 7. impact damper, 8. amplifier, 9. switch, 10. optical coupling isolator, 11. scratch pad memories, 12. microprocessors
Specific embodiments:
Below in conjunction with accompanying drawing, set forth a specific embodiment, the inventive system comprises: Temperature Humidity Sensor 1, Temperature Humidity Sensor 1, employing Rotronic sensor; Wind speed wind direction sensor 2, its employing Gill sensor.The output signal of Temperature Humidity Sensor 1 and wind speed wind direction sensor 2 is two groups of 4～20mA electric currents, adopts special-purpose temperature compensation and linearizer to process.Temperature Humidity Sensor 1, wind speed wind direction sensor 2 are connected respectively to the gate 6 of 8 passages.Passage gate 6, impact damper 7, amplifier 8 are linked in sequence, and amplifier 8 is connected to through switch 9 analog to digital converter 3 that precision is 16bit again, and analog to digital converter 3 is connected to optical coupling isolator 10.8 passage gates 6 are also connected with microprocessor 12, and the signal that microprocessor 12 sends is 485 communication signals by forwarding, are connected to computing machine 5.Microprocessor 12 is also connected to scratch pad memory 11.
The principle of work of this device is: during use, this device is fixed on to position to be measured, after switching on power, 4～20mA signal of sensor output changes into voltage signal through gating and buffering, then by amplifier, process, signal after processing carries out analog to digital conversion through the A/D converter of 16bit, digital signal after conversion enters microprocessor through light-coupled isolation, forwarding is 485 communication signals, this signal is imported into computer, after data processing, the results are shown on liquid crystal display, data are recorded in the storage system of computer simultaneously, can data be derived by USB.Because this device is also provided with scratch pad memory, therefore, after power supply breaks down, data are still kept in microprocessor.The control of the semaphore in this embodiment is completed by computing machine 5.
Device of the present invention can be measured the evaporation capacity variation of material by real-time online automatically, and can Long-distance Control measuring process.Thereby be convenient to instruct aerobic fermentation state and technological process.This device also possesses the features such as precision is high, low in energy consumption, easy to maintenance, is more suitable for Accurate Determining and the continuous monitoring of fermentation materials evaporation capacity, can avoid the required loaded down with trivial details sampling of classic method and indoor measurement formality.
Claims (8)
1. the device of evaporation capacity in a real-time online measuring cell, it is characterized in that: it comprises that Temperature Humidity Sensor, wind speed wind direction sensor, passage gate, impact damper, amplifier, switch, analog to digital converter, the above-mentioned device of optical coupling isolator are successively electric series winding and connect, passage gate is also connected with microprocessor, and microprocessor is connected with computing machine.
2. the device of evaporation capacity in a kind of real-time online measuring cell as claimed in claim 1, is characterized in that between described microprocessor and optical coupling isolator that, for photoelectricity is connected, microprocessor is also electrical connection with scratch pad memory.
3. the device of evaporation capacity in a kind of real-time online measuring cell as claimed in claim 1, is characterized in that: the signal conversion accuracy of described analog to digital converter is 16, and input channel is 8 passages.
4. the method for evaporation capacity in a real-time online measuring cell, it is characterized in that: during measurement, first Temperature Humidity Sensor and wind speed wind direction sensor are placed in to the interior space that fermentation materials heap is deposited, again the simulating signal of Temperature Humidity Sensor and wind speed wind direction sensor measurement is sent into analog to digital converter, the digital signal that analog to digital converter sends is processed by computing machine, switching value signaling module is for controlling the semaphore output of Temperature Humidity Sensor and wind speed wind direction sensor and the unlatching of sensor with closed, switching value signaling module is also connected with computing machine, its running is controlled by computer remote.
5. the method for evaporation capacity in a kind of real-time online measuring cell as claimed in claim 4, it is characterized in that: temperature-humidity sensor output signal is two groups of 4～20mA electric currents, adopt special-purpose temperature-compensation circuit and linearization process circuit, one group of temperature that is converted into-40～80 ℃, another group is converted into 0～99.9% humidity.
6. the method for evaporation capacity in a kind of real-time online measuring cell as claimed in claim 4, it is characterized in that: wind speed wind direction sensor output signal is two groups of 4～20mA electric currents, adopt linear conversion, one group is converted into 0～359 ° of wind direction, and another group is converted into 0～60m/s wind speed.
7. the method for evaporation capacity in a kind of real-time online measuring cell as claimed in claim 4, is characterized in that: the communication format of the data such as data collecting module collected temperature, humidity, wind speed and direction is chosen as RS232, RS422, RS485 or simulation output.
8. the method for evaporation capacity in a kind of real-time online measuring cell as claimed in claim 4, is characterized in that: its switching value signaling module is 8 passages, can carry out Long-distance Control.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105424340A (en) * | 2015-11-23 | 2016-03-23 | 北京林业大学 | Rapid field determinator for wafting evaporation losses for sprinkling irrigation |
| CN110160909A (en) * | 2019-05-28 | 2019-08-23 | 中国科学院青海盐湖研究所 | A kind of measuring method and system of bittern evaporation rate |
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| CN105424340A (en) * | 2015-11-23 | 2016-03-23 | 北京林业大学 | Rapid field determinator for wafting evaporation losses for sprinkling irrigation |
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| CN110160909A (en) * | 2019-05-28 | 2019-08-23 | 中国科学院青海盐湖研究所 | A kind of measuring method and system of bittern evaporation rate |
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Application publication date: 20140115 |