CN104792969B - A kind of soil suction value on-site wireless based on Temperature Humidity Sensor measures system - Google Patents
A kind of soil suction value on-site wireless based on Temperature Humidity Sensor measures system Download PDFInfo
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- CN104792969B CN104792969B CN201510195332.4A CN201510195332A CN104792969B CN 104792969 B CN104792969 B CN 104792969B CN 201510195332 A CN201510195332 A CN 201510195332A CN 104792969 B CN104792969 B CN 104792969B
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Abstract
A kind of soil suction value on-site wireless based on Temperature Humidity Sensor measures system, including measuring probe, wireless transport module, data processing terminal.The shell of described measuring probe is assembled constituted by main body tube, package tube, Taper Pipe, Temperature Humidity Sensor, power module, control circuit plate and wireless sending module it is provided with in the shell of measuring probe, wireless transport module receives the data signal that wireless sending module sends, wireless transport module connects data processing terminal, and described data processing terminal is for showing measurement data and processing.A kind of soil suction value on-site wireless based on Temperature Humidity Sensor of the present invention measures system, this system can be with the temperature and humidity in the soil body of Real-time Collection outdoor, and the reception terminal that data are sent in laboratory will be gathered by wireless base station apparatus, and then measure the suction value in soil.
Description
Technical field
A kind of soil suction value on-site wireless based on Temperature Humidity Sensor of the present invention measures system, relates to the on-the-spot test field of unsaturated soil soil-water characteristic curve, belongs to Geotechnical Engineering field.
Background technology
Soil-water characteristic curve (SWCC) is an important curve of relation between soil body suction and water content described in unsaturated soils theory.The character such as unsaturation soil suction situation, shearing strength and permeability can be understood directly or indirectly by soil-water characteristic curve.At present, the method such as the main tensioned meter method of method, temple instrument method, volumetric pressure plate method, filter paper method, salt solustion mehtod and humidity sensor method of soil-water characteristic curve is measured.In these methods, humidity sensor method has the advantages such as suction measurement scope is big, the testing time is shorter.The principle of the method is to be recorded the relative humidity of the soil body, the suction then calculated under ambient temperature in the soil body according to Kelvin equation by humidity sensor.
Comprising the concrete steps that of conventional humidity sensor method: record the rating curve between the relative humidity in sensor resistance (or voltage, electric capacity) and sensor local environment the most in the lab, then humidity sensor is filled in the soil body, with wire data acquisition unit it is connected with humidity sensor and gathers the electrical signal of sensor feedback, by rating curve and Kelvin equation, the suction value in the soil body being calculated after signal stabilization.Due to the signal fed back for Real-time Collection humidity sensor, generally require and data acquisition unit and sensor are coupled together, and in order to obtain the data in data acquisition unit, data acquisition unit is also required to computer connects.This situation makes humidity sensor method be limited in laboratory, needs bigger manpower and materials to maintain when needing in-site measurement soil suction.The sensor being simultaneously currently used for measuring soil body suction value is often paid attention to gather humidity, and therefore the temperature of the soil body also needs extra equipment to measure.
Summary of the invention
In order to overcome above-mentioned humidity sensor method to measure the drawback of soil suction value at the scene, the present invention provides a kind of soil suction value on-site wireless based on Temperature Humidity Sensor to measure system, this system can be with the temperature and humidity in the soil body of Real-time Collection outdoor, and the reception terminal that data are sent in laboratory will be gathered by wireless base station apparatus, and then measure the suction value in soil.
The technical scheme that the present invention takes is:
A kind of soil suction value on-site wireless based on Temperature Humidity Sensor measures system, including measuring probe, wireless transport module, data processing terminal.The shell of described measuring probe is assembled constituted by main body tube, package tube, Taper Pipe, Temperature Humidity Sensor, power module, control circuit plate and wireless sending module it is provided with in the shell of measuring probe, wireless transport module receives the data signal that wireless sending module sends, wireless transport module connects data processing terminal, and described data processing terminal is for showing measurement data and processing.
Described main body tube one end is provided with the sealing lid of band circular hole, and the main body tube other end is connected with package tube one end, and the package tube other end is connected with Taper Pipe.
The external diameter of described package tube is less than or equal to main body tube, the internal diameter of Taper Pipe, and package tube pipe shaft is provided with aperture, and the two ends of package tube are provided with sealing lid, and certain distance in main body tube, Taper Pipe is inserted at package tube two ends respectively.
Described Temperature Humidity Sensor is encapsulated in package tube；Power module, control circuit plate and wireless sending module are encapsulated in main body tube；Wherein the antenna of wireless sending module stretches out the housing exterior of measuring probe through the circular hole sealing lid.
Described main body tube, package tube, Taper Pipe pass sequentially through glue and cohere.
Described main body tube, package tube, Taper Pipe are pvc pipe.
Described data processing terminal includes one-chip computer module, PC, and wireless transport module connects one-chip computer module, and one-chip computer module connects PC by USB data line.
A kind of soil suction value on-site wireless measuring method based on Temperature Humidity Sensor, measuring probe inserts in the soil body as the carrier of Temperature Humidity Sensor, wireless sending module, measure soil suction in real time, the signal that Temperature Humidity Sensor records is by wireless sending module and the collected one-chip computer module of wireless transport module, the digital signal collected is processed by one-chip computer module, and the suction value obtained after treatment and warm and humid angle value is shown eventually through PC.
A kind of soil suction value on-site wireless based on Temperature Humidity Sensor measures system, and the on-site wireless for field soil suction value is measured.
A kind of soil suction value on-site wireless based on Temperature Humidity Sensor of the present invention measures system, and technique effect is as follows:
1), simple in construction, cost of manufacture is low, uses simple and convenient, and suction measurement scope is big and the time of measurement is short.Parts in suction measurement system are all the materials being commercially readily available, and device makes and assembles simply, and the probing shell of PVC material is that power module, Temperature Humidity Sensor, wireless transport module and wireless sending module provide protection.
2), power module, electric control circuit plate and wireless transport module are encapsulated in the airtight chamber of main body tube, it is to avoid the erosion of soil water vapour.
3), the use of wireless transport module decreases the trouble of wiring so that the research worker data that the most just observable scene records；Wireless transport module can receive the signal that multiple wireless sending module sends simultaneously simultaneously, therefore by a set of wireless transport module, can observe the test case of multiple point simultaneously, significantly increase the motility of test.And in data processing terminal, PC makes Data Processing in Experiment more automatization, the function of the whole-process automatic record of data decreases the operation of testing crew and the most issuable error.
Accompanying drawing explanation
Fig. 1 is the measuring probe structural representation of the present invention；
Fig. 2 is the profile of the measuring probe of the present invention；
Fig. 3 be the present invention measuring probe in Temperature Humidity Sensor package tube structural representation.
Fig. 4 is data receiver and the process end device connection diagram of the present invention.
Detailed description of the invention
As shown in Fig. 1 ~ Fig. 4, a kind of soil suction value on-site wireless based on Temperature Humidity Sensor measures system, including measuring probe, wireless transport module 12, data processing terminal.The shell of described measuring probe is assembled constituted by main body tube 1, package tube 2, Taper Pipe 3, Temperature Humidity Sensor 5, power module 7, control circuit plate 8 and wireless sending module 9 it is provided with in the shell of measuring probe, wireless transport module 12 receives the data signal that wireless sending module 9 sends, wireless transport module 12 connects data processing terminal, and described data processing terminal is for showing measurement data and processing.
The external diameter of described package tube 2 is less than or equal to main body tube 1, the internal diameter of Taper Pipe 3, and package tube 2 pipe shaft is provided with aperture 4, and the two ends of package tube 2 are provided with sealing lid, and certain distance in main body tube 1, Taper Pipe 3 is inserted at package tube 2 two ends respectively.
Described Temperature Humidity Sensor 5 is encapsulated in package tube 2；Power module 7, control circuit plate 8 and wireless sending module 9 are encapsulated in main body tube 1；Wherein the antenna of wireless sending module 9 stretches out the housing exterior of measuring probe through the circular hole sealing lid 11.Described data processing terminal includes one-chip computer module 13, PC 14, and wireless transport module 12 connects one-chip computer module 13, and one-chip computer module 13 connects PC 14 by USB data line 15.
Embodiment:
The material of main body tube 1 is pvc pipe, length accounts for 2/3rds of whole measuring probe length, one end of main body tube 1 is by rubber blanket by glue sealing (have in rubber blanket circular hole be easy to the antenna of wireless sending module 9 pass), and main body tube 1 other end is combined with the package tube 2 of Temperature Humidity Sensor 5.The material of package tube 2 is pvc pipe, and glue sealing is passed through by rubber blanket in the two ends of package tube 2, and inserts respectively in main body tube 1 and Taper Pipe 3, any two pipe contact portion glue adhesions, joint glue sealing.
The external diameter of package tube 2 is slightly less than or equal to main body tube 1, the internal diameter of Taper Pipe 3, it is therefore an objective to preventing this section tubular wall from contacting with the soil body, package tube 2 tube wall is provided with aperture, can allow in the steam entrance pipe in the soil body.The material of Taper Pipe 3 is PVC material, and top is provided with cone angle, and owing to suction measurement probe pipe shaft is relatively thin, measuring probe can directly utilize the cone angle at top and insert a probe into or hammer in soil.
As shown in Figure 2 and Figure 3, wherein Temperature Humidity Sensor 5, power module 7 and wireless sending module 9 glue is fixed among main body tube 1, the rubber blanket being located proximate to pipe end of wireless sending module 9, and the antenna on wireless sending module 9 seals hole reserved on lid 11 through what rubber blanket was constituted, reach the outer signal of being easy to of pipe and send.The position of control circuit plate 8 is fixed on the middle part of main body tube 1, it is simple to be connected with the various modules at pvc pipe two ends, and power module 7 is fixed on the neighbouring position of control circuit plate 8.Owing to soil body suction measured by needs, Temperature Humidity Sensor 5 is encapsulated in package tube 2, and this pipe end upper and lower side is all sealed, and pipe shaft has opened several row's aperture 4, makes this pipeline section form a closed environment with surrounding soil.In measuring probe, power module 7 is all connected with Du Pont's line 10 with between control circuit plate 8, wireless sending module 9 and control circuit plate 8 with control circuit plate 8, Temperature Humidity Sensor 5.
As it is shown in figure 1, after above-mentioned suction measurement module is packaged, assembled by measuring probe complete, firmly being inserted by measuring probe or hammer in soil during use, insertion depth depends on the circumstances, in can not burying, it is also possible to reserves a part of pipe shaft and bassets.
As Figure 1 and Figure 4, measuring probe inserts in on-the-spot soil to be measured and carries out suction measurement, the data signal that now Temperature Humidity Sensor 5 records, and is processed by data processing terminal, finally gives suction value.
Temperature Humidity Sensor 5 is SHT10 digital temperature-humidity sensor.
Power module 7 is 3V button cell.
Wireless sending module 9 is APC300 type wireless senser sending module.Wireless transport module 12 is APC250S type wireless senser receiver module, can receive the data signal that multiple APC300 type wireless senser sending module sends simultaneously.
Single-chip microcomputer 13 is AVR single chip.
After data transmission starts power supply with the process processed approximately as: the power module 7 in measuring probe as shown in Figure 4, Temperature Humidity Sensor 5 is started working and the digital signal of reaction soil body humiture is passed to APC300 type wireless senser sending module, this module maximum transmission distance is up to 700 meters, wireless transport module 12 within the on-the-spot 700 meters of scopes of now range measurement receives the digital signal that APC300 sends, and pass the signal along to the AVR single chip that is attached thereto processes, wireless transport module 12 can receive the signal that multiple APC300 wireless senser sending module sends simultaneously, multimetering can be realized based on this to observe simultaneously.AVR single chip converts digital signals into the temperature value of correspondence, rh value, is finally converted into soil body suction value according to Kelvin equation.For the ease of observation, AVR single chip is connected with PC 14 by USB data line 15, temperature value, rh value and the suction value of multiple test points is shown on PC 14 interface, and surveyed data are carried out real time record.
Claims (6)
1. a soil suction value on-site wireless based on Temperature Humidity Sensor measures system, including measuring probe, wireless transport module (12), data processing terminal, it is characterized in that, the shell of described measuring probe is by main body tube (1), package tube (2), Taper Pipe (3) assembles and constitutes, Temperature Humidity Sensor (5) it is provided with in the shell of measuring probe, power module (7), control circuit plate (8) and wireless sending module (9), wireless transport module (12) receives the data signal that wireless sending module (9) sends, wireless transport module (12) connects data processing terminal, described data processing terminal is for showing measurement data and processing；
Described main body tube (1) one end is provided with the sealing lid (11) of band circular hole, and main body tube (1) other end is connected with package tube (2) one end, and package tube (2) other end is connected with Taper Pipe (3)；The external diameter of described package tube (2) is less than or equal to main body tube (1), the internal diameter of Taper Pipe (3), package tube (2) pipe shaft is provided with aperture (4), the two ends of package tube (2) are provided with sealing lid, and certain distance in main body tube (1), Taper Pipe (3) is inserted at package tube (2) two ends respectively；Described Temperature Humidity Sensor (5) is encapsulated in package tube (2)；Power module (7), control circuit plate (8) and wireless sending module (9) are encapsulated in main body tube (1)；Wherein the antenna of wireless sending module (9) stretches out the housing exterior of measuring probe through the circular hole sealing lid (11).
A kind of soil suction value on-site wireless based on Temperature Humidity Sensor measures system, it is characterised in that described main body tube (1), package tube (2), Taper Pipe (3) pass sequentially through glue (6) and cohere.
A kind of soil suction value on-site wireless based on Temperature Humidity Sensor the most according to claim 1 or claim 2 measures system, it is characterised in that described main body tube (1), package tube (2), Taper Pipe (3) are pvc pipe.
A kind of soil suction value on-site wireless based on Temperature Humidity Sensor measures system, it is characterized in that, described data processing terminal includes one-chip computer module (13), PC (14), wireless transport module (12) connects one-chip computer module (13), and one-chip computer module (13) connects PC (14) by USB data line (15).
5. use any one soil suction value on-site wireless based on Temperature Humidity Sensor of claim 1 ~ 4 such as to measure the soil suction value measurement method of system, it is characterized in that, measuring probe is as Temperature Humidity Sensor (5), the carrier of wireless sending module (9) inserts in the soil body, measure soil suction in real time, the signal that Temperature Humidity Sensor (5) records is by wireless sending module (9) and wireless transport module (12) collected one-chip computer module (13), the digital signal collected is processed by one-chip computer module (13), and eventually through PC (14), the suction value obtained after treatment and warm and humid angle value are shown；Wireless transport module (12) can receive the signal that multiple wireless sending module (9) sends simultaneously, it is achieved multimetering, observe simultaneously.
A kind of soil suction value on-site wireless based on Temperature Humidity Sensor measures system, it is characterised in that: the on-site wireless for field soil suction value is measured.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106092809B (en) * | 2015-12-29 | 2019-01-18 | 山东科技大学 | A kind of unsaturated soil suction field measurement apparatus based on filter paper method |
| CN107421847A (en) * | 2017-05-17 | 2017-12-01 | 中南大学 | A kind of total suction real-time measurement apparatus of unsaturation soil layer and its measuring method |
| CN108615347A (en) * | 2018-07-16 | 2018-10-02 | 三峡大学 | A kind of wireless transmissioning monitoring device based on multi-functional self-organizing sensor |
| CN109163768A (en) * | 2018-11-16 | 2019-01-08 | 岱特智能科技（上海）有限公司 | A kind of temperature/humiditydetection detection system based on wireless sensor |
| CN113049650B (en) * | 2021-03-25 | 2023-08-18 | 河北工业大学 | Intelligent calibration system and calibration method for soil humidity sensor |
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| CN101275957A (en) * | 2006-12-11 | 2008-10-01 | 电子科技大学 | Wireless temperature and humidity intelligent sensor |
| CN101520427B (en) * | 2009-03-20 | 2013-07-31 | 华南农业大学 | Water level sensor for farmland water based on wireless sensor network |
| CN101561408A (en) * | 2009-05-22 | 2009-10-21 | 华南农业大学 | Soil humidity measuring device based on wireless microcomputer control |
| CN101936935B (en) * | 2010-06-29 | 2013-06-12 | 中国农业大学 | Device for measuring multiple parameters of soil |
| CN202230047U (en) * | 2011-09-13 | 2012-05-23 | 江苏大学 | Solar wireless measurement device for soil profile moisture |
| CN102419344A (en) * | 2011-09-13 | 2012-04-18 | 江苏大学 | Solar wireless soil profile water content measurement device |
| CN102735817B (en) * | 2012-06-19 | 2016-12-21 | 海安县新晨机电厂 | A kind of soil moisture measuring instrument |
| JP6057119B2 (en) * | 2012-07-20 | 2017-01-11 | カシオ計算機株式会社 | Moisture measuring device and program |
| CN204536323U (en) * | 2015-04-22 | 2015-08-05 | 三峡大学 | A kind of soil suction value on-site wireless measuring system based on Temperature Humidity Sensor |
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