CN208383173U - Pore water pressure temperature parameter detection system in situ - Google Patents
Pore water pressure temperature parameter detection system in situ Download PDFInfo
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- CN208383173U CN208383173U CN201820738410.XU CN201820738410U CN208383173U CN 208383173 U CN208383173 U CN 208383173U CN 201820738410 U CN201820738410 U CN 201820738410U CN 208383173 U CN208383173 U CN 208383173U
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- pore water
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- water pressure
- detection system
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Abstract
The utility model discloses a kind of pore water pressure temperature parameter detection systems in situ, including detection probe, successively connect via detection signal amplifier, AD converter and central processing unit, timing controller and detection data memory are connect with central processing unit.Detection probe includes shell, and top ports are spirally connected with upper end cap bottom nozzle, and upper end cap is top closed but is equipped with cable punching hole；Shell bottom nozzle is spirally connected with lower endcaps top ports, and lower endcaps bottom nozzle, which is spirally connected, protects head；Outer casing underpart is equipped with a circle strip hole, and the ceramic sleeve of strip hole is cased with micropore, covered on outer shell outer wall；The inner cavity of shell and upper end cap forms accommodating cavity, and the pressure sensor and temperature sensor being equipped in accommodating cavity are connect by air guide cable with detection signal amplifier；Full silicone oil and silica gel are filled in accommodating cavity.The utility model can realize that scene carries out the measurement of pore water pressure, temperature and moisture content parameter to the soil body for a long time, and measurement is accurate, easy to operate, long service life.
Description
Technical field
The utility model relates to a kind of scenes to the equipment of soil body pore water pressure and temperature parameter examinations, belong to soil
Earth, hydrogeological pore water pressure, temperature detection technical field.
Background technique
The parameters such as soil aperture water pressure, temperature and moisture content have critically important meaning in industries such as agricultural, geology.?
Agriculturally, water is not only crop and relies one of an important factor for growing, and it is important to be that can fertilizer be efficiently used by crop
Premise.In geology industry, in China of landslide district occurred frequently, at slide strips pore water pressure variation be cause heavy rain to come down it is important because
Therefore element can come down to heavy rain by monitoring pore water pressure, moisture content and temperature and realize advanced prediction, and can very great Cheng
Degree improves the reliability and accuracy of prediction.
The pore water pressure occurred currently on the market is in respect of several forms such as steel chord type, vapour-pressure type, these pore water pressures
Meter can only all survey pore water normal pressure, cannot survey negative pressure, and for multi-form soil layer, (pore water pressure in saturation soil layer is
Normal pressure, the pressure in unsaturation soil layer is negative pressure) for there is certain limitation, and have that structure is complicated, install more numerous
It is trivial, it is not easy the shortcomings that implementing.
Occurring a kind of pair of pore water positive and negative pressure in recent years can be implemented the pore pressure gauge of measurement, applicable
It measures in saturation/unsaturation soil layer pore water pressure, and its probe can directly contact the tested soil body, easily implements, but its group
It fills more complex, the ceramic cylinder with holes of full air free water is filled using sealing to measure the soil body to the suction of moisture, it is this using no gas
Although the way of water filling can obtain good effect within the short time (in 3 months), but with the extension of time, water just
It is intended to ooze out out of ceramic cylinder with holes, to influence measurement accuracy, even scraps probe.
Utility model content
The purpose of this utility model is to provide a kind of pore water pressure temperature parameter detection system in situ, structure design is closed
Reason is, it can be achieved that scene carries out the measurement of pore water pressure, temperature and moisture content parameter to the soil body for a long time, and measurement is accurate and reliable, behaviour
Make simple and convenient, long service life.
To achieve the goals above, the utility model uses following technical scheme:
A kind of original position pore water pressure temperature parameter detection system, it is characterised in that: it is intracorporal including being embedded in tested soil
Several detection probes, detection probe are successively connected via detection signal amplifier, AD converter and central processing unit, timing controlled
Device and detection data memory are connect with central processing unit, in which: detection probe includes cylinder-like shell；The top ports of shell with
The bottom nozzle of upper end cap is spirally connected, and upper end cap top closed but offers cable punching hole；The bottom nozzle of shell and the top of lower endcaps
Port is spirally connected, and the bottom nozzle of lower endcaps is bolted with protection head；The lower part of shell is equipped with a circle strip hole, is arranged on the outer wall of shell
There is the ceramic sleeve with micropore, ceramic sleeve covers in the strip hole on shell；The common shape in the inner cavity of shell and upper end cap
At accommodating cavity, pressure sensor and temperature sensor are equipped in accommodating cavity, pressure sensor and temperature sensor pass through air guide electricity
Cable is connect with detection signal amplifier；Full silicone oil is filled in accommodating cavity and silica gel, silicone oil are located below, and silica gel is located above.
The utility model has the advantages that:
The utility model assembling is simple, and it is convenient to repair, and can realize at the scene and measure the positive/negative pressure of pore water to the soil body for a long time
Power, temperature and moisture content parameter, detection probe are directly embedded in the tested soil body, are easily implemented, and measurement is accurate and reliable, service life
It is long, reliable accurate numerical basis is provided for the forecast on heavy rain landslide.
Detailed description of the invention
Fig. 1 is the composition schematic diagram of the utility model original position pore water pressure temperature parameter detection system.
Fig. 2 is the structural schematic diagram of detection probe.
Specific embodiment
As depicted in figs. 1 and 2, pore water pressure temperature parameter detection system in the utility model original position includes being embedded in tested soil
Intracorporal several detection probes 10, the signal port of detection probe 10 is successively via detection signal amplifier 31, AD converter 32
It is connect with the corresponding signal port of central processing unit 33, the signal port of timing controller 34 and detection data memory 35 is in
The corresponding signal port of central processor 33 connects, in which: such as Fig. 2, detection probe 10 includes steel drum shape shell 12；Shell 12
Top ports be spirally connected in the bottom nozzle of coniform steel upper end cap 11, upper end cap 11 top closed but offer cable and wear
Hole；The bottom nozzle of shell 12 is spirally connected in the top ports of coniform steel lower endcaps 13, and the bottom nozzle of lower endcaps 13 is bolted with
Steel protects head 14；The lower part of shell 12 is equipped with the circle strip hole 120 with certain altitude, is arranged on the outer wall of shell 12
Ceramic sleeve 17 with several micropores, ceramic sleeve 17 are close to shell 12, and ceramic sleeve 17 is by the strip hole on shell 12
120 cover in；An accommodating cavity, the axis of usual strip hole 120 and accommodating is collectively formed in the inner cavity of shell 12 and upper end cap 11
The axis perpendicular of chamber, accommodating cavity is interior to be equipped with pressure sensor 21 and temperature sensor 22, pressure sensor 21 and temperature sensing
Device 22 is connect by air guide cable 24 with the signal input port of the detection signal amplifier 31 outside shell 12；Filling in accommodating cavity
Full silicone oil 18 and silica gel 19, silicone oil 18 are located below, and silica gel 19 is located above, and in other words, silicone oil 18 and silica gel 19 jointly will
Accommodating cavity filling is full.
Such as Fig. 1, the utility model original position pore water pressure temperature parameter detection system further includes power circuit, in which: power supply
Circuit includes battery, and the power output port of battery is connect with the power input of booster circuit 53, and booster circuit 53 has
First boosting supply port and the second boosting supply port, the first boosting supply port and central processing unit 33, timing controller
34 connect with the power input of detection data memory 35, i.e., booster circuit 53 is long-term by its first boosting supply port
To central processing unit 33, timing controller 34 and detection data memory 35 power (such as 4.5V), second boosting supply port with
The input port of voltage regulator circuit 54 connects, and the output port of voltage regulator circuit 54 is via power switch 55 and pressure sensor 21, temperature
The power input connection of sensor 22, detection signal amplifier 31, AD converter 32 is spent, power switch 55 beats Push And Release
It closing and is controlled by central processing unit 33, i.e., the controlled ports of power switch 55 are connect with the corresponding controling end mouth of central processing unit 33,
Booster circuit 53 provides the voltage (such as 6V) after being promoted to voltage regulator circuit 54 by its second boosting supply port, then pressure stabilizing electricity
Road 54 obtains stable voltage (such as 5V) after doing steady pressure treatment to voltage, and is determined based on central processing unit 33 power switch 55
When switch control, execute measure operation (closings of power switch 55) when, persistently to pressure sensor 21, temperature sensor 22,
Signal amplifier 31, the power supply of AD converter 32 are detected, in other words, when not executing measurement operation (opening of power switch 55),
Voltage regulator circuit 54 is not powered to pressure sensor 21, temperature sensor 22, detection signal amplifier 31, AD converter 32, in this way
The advantages of design, is, greatly improves efficiency, has saved electric energy, and avoids long term device from being in and be powered state
And substantially prolong service life.
In actual implementation, it can also be battery 51, battery 51 and solar recharging that battery can be common batteries certainly
Device 52 connects, i.e. the charging output port of solar charging device 52 is connect with the charging input end mouth of battery 51.In general,
Solar charging device 52 may include solar panels, electrical energy conversion device, electrical energy storage device, electrical energy transportation device.
Such as Fig. 1, air guide cable 24 is pierced by from the cable punching hole of upper end cap 11, and cable punching hole is equipped with and enables air guide cable 24
It is pierced by and realizes to air guide cable 24 locking member 16 of locking, sealing ring is installed between locking member 16 and air guide cable 24
(not marked in figure).
Further, pressure sensor 21 and temperature sensor 22 are arranged in the protective shell 23 of stainless steel material, protection
Shell 23 floats on silicone oil 18 and is squeezed by silica gel 19, has hole on protective shell 23, the size of hole is will not make silicone oil 18, silicon
Glue 19 penetrates into subject in protective shell 23, in which: air guide cable 24 is protruded into from the top opening of protective shell 23, the signal of pressure sensor 21
Output port is connect with one end of the pressure data cable 210 in air guide cable 24, and pressure data cable 210 is used as transmission pressure
The pressure data detected of sensor 21, the signal output port and the temperature data line in air guide cable 24 of temperature sensor 22
One end of cable 220 connects, and temperature data cable 220 is used as the transmission temperature data detected of temperature sensor 22, pressure data
The other end of cable 210 and temperature data cable 220 is connect with the signal input port of detection signal amplifier 31, air guide cable
One end of gas-guide tube 240 in 24 is protruded into protective shell 23 and the other end of gas-guide tube 240 stretches out upper end cap 11 and communicates with atmosphere,
So that 23 inner cavity of protective shell is connected with atmosphere.
In the present invention, the design of air guide cable 24 avoids atmospheric pressure and generates adverse effect to measurement, does not need
Additional installation large barometer measuring pressure to correct is installed, buries simple and easy to do, and the depth of burying is within 100 meters.
In the present invention, the Switzerland that the preferred high sensitivity of pressure sensor 21, linear precision are high, temperature drift is small
Keller company production diffused silicon piezoresistive pressure sensor (PA-21Y type), and such pressure sensor have can both survey
Pore water normal pressure is measured, and can measure the function of pore water negative pressure.
Such as Fig. 2, protecting the bottom surface of head 14 is arc surface, protects and is equipped with sealing ring 15 between head 14 and lower endcaps 13.
Such as Fig. 2, lower endcaps 13 are equipped with the column chamber 130 being connected with accommodating cavity, and column chamber 130 is vertically arranged and penetrates through down
End cap 13.
Further, silicone oil 18 fills the strip hole that the completely top surface of column chamber 130 and silicone oil 18 is higher than 12 lower part of shell
120 place height and positions.
In actual design, the aperture of the micropore on ceramic sleeve 17 is less than 0.002 millimeter.The design of this small-bore makes
It obtains ceramic sleeve 17 and is formed water membrane after the intracorporal moisture infiltration of soil, water can pass through, but prevent sky under certain pressure difference
Gas passes through, i.e., will not gas leakage.Also, the utility model has selected silicone oil to substitute air free water, and being effectively utilized silicone oil in this way has
It is not easy the advantages of oozing out from ceramic sleeve 17.
In actual design, the aperture of the strip hole 120 on shell 12 is greater than the aperture of the micropore on ceramic sleeve 17.
The purpose of design of the strip hole 120 of shell 12 is the influence etc. of preliminary cut-off silicone oil exudation and adjustment apertures to suction.
Such as Fig. 1, in actual design, the PORT COM of central processing unit 33 is also via RS232 communication device 36 and scene
The PORT COM of control station 40 connects.
In the present invention, detect signal amplifier 31, AD converter 32, central processing unit 33, timing controller 34,
Detection data memory 35, RS232 communication device 36, field control station 40, booster circuit 53, voltage regulator circuit 54, solar charging
Electric installation 52, air guide cable 24 etc. are device, circuit or device known in the art, therefore its specific composition is not detailed herein
It states.
When measurement, by several detection probes 10, evenly distributedly in a vertical shape plug is embedded in the tested soil body at equal intervals.Soil
Intracorporal moisture passes through the silicone oil 18 and silica gel in the micropore on ceramic sleeve 17, the strip hole 120 on shell 12 and accommodating cavity
It is squeezed mutually between 19 and generates pressure (negative pressure/normal pressure), then pressure sensor 21 detects pressure, while temperature
It spends sensor 22 and detects soil temperature.The detection data of acquisition is passed through air guide cable by pressure sensor 21 and temperature sensor 22
24 are transmitted to detection signal amplifier 31.Detection signal amplifier 31 is transferred to AD conversion after carrying out signal amplification to detection data
Device 32 carry out analog-to-digital conversion, then AD converter 32 by the digital data transmission after conversion to central processing unit 33, by centre
Reason device 33 carries out processing analysis to detection data, is then stored in detection data memory 35, will test data in due course and pass through
RS232 communication device 36 sends field control station 40 to, checks and analyzes for related personnel.Wherein, central processing unit 33 passes through
The pressure value of detection can get the soil body to the suction of moisture, and obtain the moisture content of the soil body.Here, suction is by ceramic sleeve 17
It is generated with filler silicone oil 18, the silica gel 19 in it.
In actual measurement, timing controller 34 can be responsible for starting measurement operation.When starting measures operation, power switch
55 controlled closings, power circuit are supplied to pressure sensor 21, temperature sensor 22, detection signal amplifier 31, AD converter 32
Electricity, measuring operation at this time can go on smoothly.After the completion of central processing unit 33 judges measurement operation, control power switch 55 is beaten
It opens, so that pressure sensor 21, temperature sensor 22, detection signal amplifier 31, AD converter 32 lose electric power, measures operation
Stop, waiting the starting for measuring operation next time.
The utility model assembling is simple, and succinct structure ensures durability, and it is convenient to repair, and can realize at the scene long-term
To the positive/negative pressure of the soil body (saturation of soil, slip mass etc./unsaturation soil layer) measurement pore water, temperature and moisture content parameter, inspection
Probing head is directly embedded in the tested soil body, is easily implemented, and measurement is accurate and reliable, long service life, and the forecast for heavy rain landslide provides
Reliable accurate numerical basis.
The above is the utility model preferred embodiment and its technical principle used, for those skilled in the art
It is any based on technical solutions of the utility model basis without departing substantially from the spirit and scope of the utility model for member
On equivalent transformation, simple replacement etc. it is obvious change, belong within scope of protection of the utility model.
Claims (10)
1. a kind of original position pore water pressure temperature parameter detection system, it is characterised in that: if it is intracorporal including being embedded in tested soil
Dry detection probe, detection probe are successively connected via detection signal amplifier, AD converter and central processing unit, timing controller
It is connect with detection data memory with central processing unit, in which: detection probe includes cylinder-like shell；The top ports of shell with it is upper
The bottom nozzle of end cap is spirally connected, and upper end cap top closed but offers cable punching hole；The bottom nozzle of shell and the top of lower endcaps
Mouth is spirally connected, and the bottom nozzle of lower endcaps is bolted with protection head；The lower part of shell is equipped with a circle strip hole, is arranged on the outer wall of shell
Ceramic sleeve with micropore, ceramic sleeve cover in the strip hole on shell；The inner cavity of shell and upper end cap is collectively formed
Accommodating cavity, accommodating cavity is interior to be equipped with pressure sensor and temperature sensor, and pressure sensor and temperature sensor pass through air guide cable
It is connect with detection signal amplifier；Full silicone oil is filled in accommodating cavity and silica gel, silicone oil are located below, and silica gel is located above.
2. original position pore water pressure temperature parameter detection system as described in claim 1, it is characterised in that:
The original position pore water pressure temperature parameter detection system includes power circuit, in which: power circuit includes battery, battery
The connection of the power input of power output port and booster circuit, booster circuit have the first boosting supply port and second liter
Supply port is pressed, the first boosting supply port and the central processing unit, the timing controller and the detection data store
The power input of device connects, and the input port of the second boosting supply port and voltage regulator circuit connects, the output of voltage regulator circuit
Port is via power switch and the pressure sensor, the temperature sensor, the detection signal amplifier, the AD conversion
The power input of device connects, and the on and off of power switch is controlled by the central processing unit.
3. original position pore water pressure temperature parameter detection system as claimed in claim 2, it is characterised in that:
The battery is battery, and battery is connect with solar charging device.
4. the pore water pressure temperature parameter detection system in situ as described in claims 1 or 2 or 3, it is characterised in that:
The air guide cable is pierced by from the cable punching hole of the upper end cap, and the cable punching hole is equipped with and enables the air guide
Cable is pierced by and realizes to the air guide cable locking member of locking, is equipped between locking member and the air guide cable close
Seal.
5. the pore water pressure temperature parameter detection system in situ as described in claims 1 or 2 or 3, it is characterised in that:
The pressure sensor and the temperature sensor are arranged in the protective shell of stainless steel material, have hole on protective shell
Hole, in which: the air guide cable is protruded into from the top opening of protective shell, the signal output port of the pressure sensor and the air guide
One end of pressure data cable in cable connects, in the signal output port of the temperature sensor and the air guide cable
One end of temperature data cable connects, one end of the gas-guide tube in the air guide cable protrude into protective shell and gas-guide tube it is another
End is communicated with atmosphere, so that protective shell inner cavity is connected with atmosphere.
6. the pore water pressure temperature parameter detection system in situ as described in claims 1 or 2 or 3, it is characterised in that:
The bottom surface of the protection head is arc surface, is equipped with sealing ring between the protection head and the lower endcaps.
7. original position pore water pressure temperature parameter detection system as claimed in claim 6, it is characterised in that:
The lower endcaps are equipped with the column chamber being connected with the accommodating cavity.
8. original position pore water pressure temperature parameter detection system as claimed in claim 7, it is characterised in that:
The silicone oil fills the full column chamber and is higher than the strip hole position of the outer casing underpart.
9. original position pore water pressure temperature parameter detection system as described in claim 1, it is characterised in that:
The aperture of the micropore on the ceramic sleeve is less than 0.002 millimeter.
10. original position pore water pressure temperature parameter detection system as described in claim 1, it is characterised in that:
The central processing unit is connect via RS232 communication device with field control station.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820738410.XU CN208383173U (en) | 2018-05-17 | 2018-05-17 | Pore water pressure temperature parameter detection system in situ |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820738410.XU CN208383173U (en) | 2018-05-17 | 2018-05-17 | Pore water pressure temperature parameter detection system in situ |
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| Publication Number | Publication Date |
|---|---|
| CN208383173U true CN208383173U (en) | 2019-01-15 |
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ID=64971181
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820738410.XU Expired - Fee Related CN208383173U (en) | 2018-05-17 | 2018-05-17 | Pore water pressure temperature parameter detection system in situ |
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| Country | Link |
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| CN (1) | CN208383173U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114353849A (en) * | 2022-01-11 | 2022-04-15 | 金华市蓝海光电技术有限公司 | Device for protecting temperature and pressure sensor from being corroded by fuel gas |
| CN114577265A (en) * | 2022-03-02 | 2022-06-03 | 中国石油大学(北京) | Non-contact type drilling fluid parameter measuring device and method |
-
2018
- 2018-05-17 CN CN201820738410.XU patent/CN208383173U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114353849A (en) * | 2022-01-11 | 2022-04-15 | 金华市蓝海光电技术有限公司 | Device for protecting temperature and pressure sensor from being corroded by fuel gas |
| CN114353849B (en) * | 2022-01-11 | 2024-04-02 | 华昇(浙江)计量技术有限公司 | Device for protecting temperature and pressure sensor from being corroded by fuel gas |
| CN114577265A (en) * | 2022-03-02 | 2022-06-03 | 中国石油大学(北京) | Non-contact type drilling fluid parameter measuring device and method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20190115 |
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| CF01 | Termination of patent right due to non-payment of annual fee |