CN106441437A - Multifunctional portable comprehensive measurement device for soil environment parameters - Google Patents
Multifunctional portable comprehensive measurement device for soil environment parameters Download PDFInfo
- Publication number
- CN106441437A CN106441437A CN201610898523.1A CN201610898523A CN106441437A CN 106441437 A CN106441437 A CN 106441437A CN 201610898523 A CN201610898523 A CN 201610898523A CN 106441437 A CN106441437 A CN 106441437A
- Authority
- CN
- China
- Prior art keywords
- soil
- temperature
- processing module
- soil environment
- signal processing
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
- G01D21/00—Measuring or testing not otherwise provided for
- G01D21/02—Measuring two or more variables by means not covered by a single other subclass
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Investigating Or Analyzing Materials Using Thermal Means (AREA)
- Investigating Or Analyzing Materials By The Use Of Electric Means (AREA)
Abstract
The invention discloses a multifunctional portable comprehensive measurement device for soil environment parameters, and the device is used for quickly completing the detection, automatic measurement and long-time fixed point measurement of soil environment parameters on a site. The device comprises a control and signal processing module which is used for receiving measurement data and used for data processing; a soil environment parameter detection assembly which is used for obtaining the soil temperature, soil pH value and air temperature and humidity data of a soil environment, and transmitting the soil temperature, soil pH value and air temperature and humidity data to the control and signal processing module; a power module which comprises a voltage source and a current source, and is used for respectively supplying power to the control and signal processing module and the soil environment parameter detection assembly and also used for signal transmission; a display module which is connected with the control and signal processing module, and is used for displaying measurement data; and a storage module which is connected with the control and signal processing module, and is used for storing the measurement data. Compared with the prior art, the device is advantageous in that the device is portable, is convenient to use, is large in number of measurement parameters, is quick in measurement, is high in accuracy, and is wide in application range.
Description
Technical field
The present invention relates to field of measuring technique, especially relates to a kind of comprehensive survey of portable multifunctional soil environment parameter
Amount device.
Background technology
Soil directly buried installation is the most frequently used system of laying of underground power cable.This system of laying requires that cable is embedded in ground
In the soil of 0.7m-1m below table, its outer surface and surrounding soil directly contact.The characterisitic parameter of soil environment is to direct-buried cable
Current capacity, radiating condition, operational reliability etc. have decisive influence.Typically related to cable operation soil environment parameter
Mainly include soil thermal resistivity, the soil moisture, P in soil H-number, earth's surface humiture etc..Soil thermal resistivity and the soil moisture are
The basic parameter of soil thermal characteristicss is characterized, directly determines current capacity and the radiating condition of cable.P in soil H-number is soil acid-base
The intensity index of degree, direct-buried cable require neutral soil environment (6-8), so the parameter directly determine the sheath pattern of cable and
Anti-corrosion measure is selected, and the routing Design and cost of cable system is also had a major impact.Therefore, either actual cable circuit sets
Meter, construction, operation maintenance, are required to accurately measure cable run surrounding soil ambient parameter.
The domestic soil parameters measuring technology being suitable for typically has following two modes at present：One is to sample on the spot, i.e., existing
Field is sampled to soil, is taken back test interior and is measured to gathering sample by instrument.However, the characterisitic parameter of soil is not
Only relevant with soil constituent, Soil structure, dry state density, moisture is also received, the factor such as temperature affects.Due in collection and fortune
During defeated, the initial condition of sample is changed, therefore can not be accurately reflected out the soil environment parameter at scene, be made measurement
Value produces deviation with actual value.Another way is on-the-spot test, i.e., using thermal resistance tester, pH value tester etc. is right at the scene
Soil parameters are tested respectively, but are limited by existing equipment condition, and this mode there are following deficiency：A) need
Plurality of devices is carried, every kind of equipment can only measure a kind of soil parameters, complex operation；B) soil heat resistance characteristic receives geological conditions shadow
Ring often difference larger, and domestic existing soil thermal resistance test instrunment cannot be according to soil heat resistance characteristic dynamic adjustment test ginseng
, there is bad adaptability, the low problem of measuring accuracy in number；C) test data can not read automatically and record, and cannot also dump to electricity
Brain is carried out and is processed.D) at the scene harsh environmental conditions when, often require equipment can realize after once mounting unmanned from
Dynamic measurement and fixed point are long-term to be measured, and existing soil parameters equipment is difficult to meet this requirement.
Chinese patent：Material thermal conductivity measurement apparatus by probe method and material thermal conductivity measurement apparatus, publication number：
CN101320007A and Chinese patent：Material thermal conductivity measurement apparatus, publication number：CN201222042Y, discloses a kind of base
Method material thermal conductivity measurement apparatus are visited in the pin of line heat source principle, the method is the spy of 53mm using diameter 0.7mm, length
Pin, is internally provided with the electrical heating wire of 0.0762mm, it is adaptable to the thermal conductivity measurement of liquid, gas and solid dielectric.But
Probe manufacture in the method is difficult, and can only carry out the test of soil thermal resistivity.
Chinese patent：A kind of quasi-stable state method solid body thermal conductivity measurement instrument, publication number：CN101303320A, discloses
A kind of measurement apparatus indoor based on experiment, the sample to gathering carries out degree of precision measurement, but which is equally unsuitable for scene soon
Speed measurement.
Content of the invention
The purpose of the present invention is exactly to provide a kind of portable multifunctional to overcome the defect of above-mentioned prior art presence
The comprehensive measurement device of soil environment parameter.
The purpose of the present invention can be achieved through the following technical solutions：
A kind of comprehensive measurement device of portable multifunctional soil environment parameter, in order to be rapidly completed soil environment at the scene
The detection of parameter, automatic measurement and long-term one-point measurement, it is characterised in that the comprehensive measurement device includes：
Control and signal processing module, in order to receive measurement data and carry out data processing；
Soil environment parameter detecting component：In order to obtain the soil moisture, soil pH value and the aerial temperature and humidity of soil environment
Data simultaneously send it to control and signal processing module；
Power module：Including voltage source and current source, join with signal processing module and soil environment in order to be respectively control
Number detection components are powered and signal transmission；
Display module：It is connected with signal processing module with control, in order to show measurement data；
Memory module：It is connected with signal processing module with control, in order to store measurement data.
Described soil environment parameter detecting component includes temperature/thermal resistivity test probe, soil pH value sensor and sky
Temperature and moisture sensor, described temperature/thermal resistivity test probe is connected with signal processing module with control by wire, described
Soil pH value sensor be connected with signal processing module by pH value signal amplifier, described aerial temperature and humidity sensor leads to
Cross the connection of temperature-humidity signal amplifier.
Described voltage source respectively with aerial temperature and humidity sensor, temperature-humidity signal amplifier, soil pH value sensor and
PH value signal amplifier connects, and described current source is connected with temperature/thermal resistivity test probe.
Described control includes analog-digital converter, signal generator and integrated circuit processor, institute with signal processing module
The integrated circuit processor that states by analog-digital converter respectively with pH value signal amplifier, temperature-humidity signal amplifier and temperature/
Thermal resistivity test probe connection, described integrated circuit processor is connected with current source by signal generator.
Described analog-digital converter is 16 analog-digital converters.
Described temperature/thermal resistivity test probe includes resistive heater and metal-coating thermocouple, and described heating is electric
Resistance silk is connected with current source, and described metal-coating thermocouple is connected with signal processing module with control.
Described current source includes the constant-current source that power meter is connected and in parallel with constant-current source pressure-sensitive with resistive heater
Adjustable rheostat, described pressure-sensitive adjustable rheostat is connected with signal generator, and described power meter is connected with constant-current source.
When the scene of carrying out is rapidly completed soil environment parameter detecting, first by temperature/thermal resistivity test probe and soil
PH sensor inserts soil to be measured respectively, and aerial temperature and humidity sensor is positioned over soil surface, obtains automatically soil to be measured
Temperature, pH value and aerial temperature and humidity measurement data, after data measured is stable, records and show respective measurement values, then carry out
Optimizing and revising for the heating power of thermal resistivity test, applies firm power the temperature level on recording power size, thermocouple
And the time, data are processed, simultaneously display processing obtains Soil Thermal values of resistivity for storage.
The the optimizing and revising for heating power of described thermal resistivity test comprises the following steps：
Constant-current source is with the resistance wire in setting power heating-up temperature/thermal resistivity test probe and defeated by power table record
Go out power, temperature signal is sent to control and signal processing module by metal-coating thermocouple, by integrated circuit processor pair
The logarithmic relationship of temperature signal and testing time is calculated, when heating rate be increased beyond in a logarithm period 20 DEG C or
During less than 4 DEG C, the output voltage of Regulate signal generator, change the heating power of current source by pressure-sensitive adjustable rheostat, protect
Scope of the card temperature rise in a logarithm period is 8-10 DEG C.And temperature value, the performance number of power meter and the inside by reading
The temporal information of clock loop, carries out linear fit, obtains the thermal resistivity of soil to be measured.
Described linear fit formula is：
Wherein, T (t) is the temperature that temperature/thermal resistivity test probe heats t, T0Probe is tested for temperature/thermal resistivity
Initial temperature, ρhFor the soil thermal resistivity of soil to be measured, q is the heat of unit unit of time length generation.
Compared with prior art, the present invention has advantages below：
It is an object of the invention to the problem for overcoming background technology to propose, provides a kind of portable multi-function soil environment ginseng
Number synthesis detection means, can complete soil thermal resistivity, pH value, the soil moisture simultaneously, and earth's surface humiture is isoparametric to adopt automatically
Collection, record and storage, achievable unmanned automatic measurement and fixed point are long-term to be measured, can be according to soil heat resistance characteristic dynamic optimization
Test parameter, improves thermal resistance measurement accuracy, cannot be only used for the facility Soil Surrounding characterisitic parameter such as direct-buried cable or pipeline
Field survey, it can also be used to the not thermal characteristic parameter test of the material such as working fluid or ointment.Have be easy to carry about with one, user
Just, measurement parameter is many, measurement is quick, accuracy is high, the advantages of be widely used.
Description of the drawings
Fig. 1 is the structural representation of the present invention.
Wherein, 1, display module, 2, memory module, 3, voltage source, 4, current source, 5, control and signal processing module, 6,
Temperature/thermal resistivity test probe, 7, pH value signal amplifier, 8, soil pH value sensor, 9, temperature-humidity signal amplifier, 10,
Aerial temperature and humidity sensor.
Specific embodiment
The present invention is described in detail with specific embodiment below in conjunction with the accompanying drawings.
Embodiment：
As shown in Figure 1：Portable multifunctional soil environment parameter measuring apparatus of the present invention, mainly include test probe and
Sensor, control and signal processing module 5, display module 1, storage module 2 and power module are constituted, and its connected mode is：Temperature
Degree/thermal resistivity test probe 6 is connected with signal processing module 5 with power module and control respectively, and soil pH value sensor 8 passes through
PH value signal amplifier 7 is connected with power module and control and signal processing module 5 respectively, and aerial temperature and humidity sensor 10 passes through
Temperature-humidity signal amplifier 9 is connected with signal processing module 5 with voltage source 3 and control respectively.Display module 1, memory module 2,
Voltage source 3 is connected with signal processing module 5 with control respectively with current source 4.
Soil pH value sensor 8 measures soil pH value using pH value plug-in electrode, can be inserted directly in soil and measure.Survey
The amplified device of trial signal is converted to digital signal by control with 16 ADC in signal processing module after amplifying, retransmit to
Display module shows and storage in memory module.
Aerial temperature and humidity sensor 10 is touch sensor, built-in critesistor and humistor, directly puts during test
In in the air.The amplified device of test signal is converted to digital letter by control and 16 ADC in signal processing module 5 after amplifying
Number, retransmit and show and storage in memory module 2 to display module 1.
It is 60mm that temperature/thermal resistivity 6 material of test probe is rustless steel, probe length, and a diameter of 1.28mm is installed in pin
There are a resistive heater and a metal-coating thermocouple.Resistance wire is connected with current source 4, at thermocouple and control and signal
ADC in reason module 5 is connected, and control is with signal processing module 5 by 16 analog-digital converters (ADC), signal generator, integrated electricity
Path processor is constituted, and current source 4 is by power meter, constant-current source, and the pressure-sensitive adjustable rheostat in parallel with constant-current source is constituted.Signal occurs
The pressure-sensitive adjustable rheostatic resistance of the output voltage signal scalable of device, the numeral letter of integrated circuit processor receiving power table
Number.The operation principle of thermal resistivity test is heat-pole method, i.e., have following formula to set up in itself to probe：
In formula T (t) be probe heat t temperature, unit for DEG C, T0For the temperature of probe initial time, unit is
DEG C, q is the heat of unit unit of time length generation, can be calculated according to heating power, and it is heat time heating time that unit is W/m, t, unit
For second, ρhBy surveying soil thermal resistivity, unit is Km/W.During measurement, the constant-current source in current source 4 is heated with certain power first
Resistance wire in probe, and pass through power table record output.Probe temperature signal is sent to control and signal by thermocouple
Processing module 5, is closed to temperature signal and testing time logarithm by control and the integrated circuit processor in signal processing module 5
System is calculated, and when heating rate is increased beyond 20 DEG C in a logarithm period or is less than 4 DEG C, automatic regulating signal occurs
The output voltage of device, so as to change the heating power of power module 2, to ensure temperature rise about 8-10 in the logarithm period
℃.Again by the probe temperature value of reading, the temporal information in the performance number of power meter and processor internal clocking loop, by (1)
Formula carries out linear fit, calculates the thermal resistivity of soil to be measured.
Display module 1 and storage module 2 are respectively adopted liquid crystal display circuit and flash bin.
Voltage source 3 is using two No. seven dry cell power supplies of section, and current source 4 is using 9 volts of lithium battery power supplies of section.
When using at the scene, temperature/thermal resistivity test probe 6 and soil pH value sensor 8 are inserted soil to be measured respectively,
Aerial temperature and humidity sensor 10 is positioned over soil surface, and each sensor distance should be greater than 10cm.After start, system is carried out respectively automatically
The initialization of module, then the system start-up soil moisture, pH value, temperature and humidity measurement, after data measured is stable, records and show
Respective measurement values.Then the optimizing and revising of heating power of thermal resistivity test is carried out, applies firm power recording power size,
Data are processed by the temperature level and time on thermocouple, and simultaneously display processing obtains Soil Thermal values of resistivity for storage.
The soil thermal resistivity of section difference tidal level is logged in District of Shanghai coastal waters cable using apparatus of the present invention, pH value is respectively
For：Low tide：0.83Km/W, 6.9, medium tidal level：1.04Km/W, 7.4, high tide level：1.10Km/W, 7.6.
Claims (10)
1. a kind of comprehensive measurement device of portable multifunctional soil environment parameter, joins in order to be rapidly completed soil environment at the scene
The detection of number, automatic measurement and long-term one-point measurement, it is characterised in that the comprehensive measurement device includes：
Control and signal processing module (5), in order to receive measurement data and carry out data processing；
Soil environment parameter detecting component：In order to obtain the soil moisture, soil pH value and the aerial temperature and humidity data of soil environment
And send it to control and signal processing module (5)；
Power module：Including voltage source (3) and current source (4), in order to be respectively control with signal processing module (5) and soil ring
Border parameter detecting assembly power supply and signal transmission；
Display module (1)：It is connected with signal processing module (5) with control, in order to show measurement data；
Memory module (2)：It is connected with signal processing module (5) with control, in order to store measurement data.
2. the comprehensive measurement device of a kind of portable multifunctional soil environment parameter according to claim 1, its feature exists
In described soil environment parameter detecting component includes temperature/thermal resistivity test probe (6), soil pH value sensor (8) and sky
Temperature and moisture sensor (10), described temperature/thermal resistivity test probe (6) is by wire and control and signal processing module
(5) connect, described soil pH value sensor (8) is connected with signal processing module (5) by pH value signal amplifier (7), institute
The aerial temperature and humidity sensor (10) that states is connected by temperature-humidity signal amplifier (9).
3. the comprehensive measurement device of a kind of portable multifunctional soil environment parameter according to claim 2, its feature exists
In described voltage source (3) is sensed with aerial temperature and humidity sensor (10), temperature-humidity signal amplifier (9), soil pH value respectively
Device (8) and pH value signal amplifier (7) connection, described current source (4) is connected with temperature/thermal resistivity test probe (6).
4. the comprehensive measurement device of a kind of portable multifunctional soil environment parameter according to claim 2, its feature exists
In described control includes analog-digital converter, signal generator and integrated circuit processor with signal processing module (5), described
Integrated circuit processor by analog-digital converter respectively with pH value signal amplifier (7), temperature-humidity signal amplifier (9) and temperature
Degree/thermal resistivity test probe (6) connection, described integrated circuit processor is connected with current source (4) by signal generator.
5. the comprehensive measurement device of a kind of portable multifunctional soil environment parameter according to claim 1, its feature exists
In described analog-digital converter is 16 analog-digital converters.
6. the comprehensive measurement device of a kind of portable multifunctional soil environment parameter according to claim 4, its feature exists
Include resistive heater and metal-coating thermocouple in, described temperature/thermal resistivity test probe (6), described adding thermal resistance
Silk is connected with current source (4), and described metal-coating thermocouple is connected with signal processing module (5) with control.
7. the comprehensive measurement device of a kind of portable multifunctional soil environment parameter according to claim 6, its feature exists
In, constant-current source that described current source (4) is connected with resistive heater including power meter and in parallel with constant-current source pressure-sensitive can
Rheostat is adjusted, described pressure-sensitive adjustable rheostat is connected with signal generator, and described power meter is connected with constant-current source.
8. the comprehensive measurement device of a kind of portable multifunctional soil environment parameter according to any one of claim 1-7,
Characterized in that, when the scene of carrying out is rapidly completed soil environment parameter detecting, first by temperature/thermal resistivity test probe (6)
To be measured soil is inserted respectively with soil pH value sensor (8), aerial temperature and humidity sensor (10) is positioned over soil surface, obtains automatically
Temperature, pH value and the aerial temperature and humidity measurement data of soil to be measured is taken, after data measured is stable, record and display are accordingly measured
Value, then carries out the optimizing and revising of heating power of thermal resistivity test, applies on firm power recording power size, thermocouple
Temperature level and the time, data are processed, storage and display processing obtain Soil Thermal values of resistivity.
9. the comprehensive measurement device of a kind of portable multifunctional soil environment parameter according to claim 8, its feature exists
In the optimizing and revising for heating power of described thermal resistivity test comprises the following steps：
Constant-current source is with the resistance wire in setting power heating-up temperature/thermal resistivity test probe (6), and is exported by power table record
Power, temperature signal is sent to control and signal processing module (5) by metal-coating thermocouple, by integrated circuit processor pair
The logarithmic relationship of temperature signal and testing time is calculated, when heating rate be increased beyond in a logarithm period 20 DEG C or
During less than 4 DEG C, the output voltage of Regulate signal generator, change the heating power of current source by pressure-sensitive adjustable rheostat, protect
Scope of the card temperature rise in a logarithm period is 8-10 DEG C.And temperature value, the performance number of power meter and the inside by reading
The temporal information of clock loop, carries out linear fit, obtains the thermal resistivity of soil to be measured.
10. the comprehensive measurement device of a kind of portable multifunctional soil environment parameter according to claim 9, its feature exists
In described linear fit formula is：
Wherein, T (t) is the temperature that temperature/thermal resistivity test probe heats t, T0For the first of temperature/thermal resistivity test probe
Beginning temperature, ρhFor the soil thermal resistivity of soil to be measured, q is the heat of unit unit of time length generation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610898523.1A CN106441437A (en) | 2016-10-14 | 2016-10-14 | Multifunctional portable comprehensive measurement device for soil environment parameters |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610898523.1A CN106441437A (en) | 2016-10-14 | 2016-10-14 | Multifunctional portable comprehensive measurement device for soil environment parameters |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106441437A true CN106441437A (en) | 2017-02-22 |
Family
ID=58174070
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610898523.1A Pending CN106441437A (en) | 2016-10-14 | 2016-10-14 | Multifunctional portable comprehensive measurement device for soil environment parameters |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106441437A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2019174123A1 (en) * | 2018-03-15 | 2019-09-19 | 无锡职业技术学院 | Intelligent humidity sensor |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH1123503A (en) * | 1997-06-30 | 1999-01-29 | Sumitomo Electric Ind Ltd | Soil thermal resistance measuring instrument |
| CN201594082U (en) * | 2010-02-23 | 2010-09-29 | 国网电力科学研究院武汉南瑞有限责任公司 | Portable soil thermal resistivity measuring device |
| CN202255460U (en) * | 2011-09-20 | 2012-05-30 | 安徽信多电子科技有限公司 | Multifunctional remote detector for parameters of soil |
| CN204462134U (en) * | 2014-11-30 | 2015-07-08 | 怀化学院 | Portable multi-function soil parameters sensing device |
| KR20150112360A (en) * | 2014-03-27 | 2015-10-07 | 한영흠 | Multi-function soil moisture meter |
| CN204705377U (en) * | 2015-04-28 | 2015-10-14 | 三明学院 | A kind of multifunction soil parameter measuring apparatus based on sun power and Zigbee |
| CN205449857U (en) * | 2016-03-30 | 2016-08-10 | 广州市富民测控科技有限公司 | Multifunctional and high-precision soil parameter measuring device |
| CN105955377A (en) * | 2016-07-27 | 2016-09-21 | 青岛农业大学 | Soil multi-parameter measuring device and method |
-
2016
- 2016-10-14 CN CN201610898523.1A patent/CN106441437A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH1123503A (en) * | 1997-06-30 | 1999-01-29 | Sumitomo Electric Ind Ltd | Soil thermal resistance measuring instrument |
| CN201594082U (en) * | 2010-02-23 | 2010-09-29 | 国网电力科学研究院武汉南瑞有限责任公司 | Portable soil thermal resistivity measuring device |
| CN202255460U (en) * | 2011-09-20 | 2012-05-30 | 安徽信多电子科技有限公司 | Multifunctional remote detector for parameters of soil |
| KR20150112360A (en) * | 2014-03-27 | 2015-10-07 | 한영흠 | Multi-function soil moisture meter |
| CN204462134U (en) * | 2014-11-30 | 2015-07-08 | 怀化学院 | Portable multi-function soil parameters sensing device |
| CN204705377U (en) * | 2015-04-28 | 2015-10-14 | 三明学院 | A kind of multifunction soil parameter measuring apparatus based on sun power and Zigbee |
| CN205449857U (en) * | 2016-03-30 | 2016-08-10 | 广州市富民测控科技有限公司 | Multifunctional and high-precision soil parameter measuring device |
| CN105955377A (en) * | 2016-07-27 | 2016-09-21 | 青岛农业大学 | Soil multi-parameter measuring device and method |
Non-Patent Citations (1)
| Title |
|---|
| 刘大钟 等: "土壤热阻系数的快速测量", 《电力建设》 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2019174123A1 (en) * | 2018-03-15 | 2019-09-19 | 无锡职业技术学院 | Intelligent humidity sensor |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103616056B (en) | A kind of multipoint liquid level detection circuit | |
| CN105067125B (en) | Cannon high speed colorimetric infrared temperature measurement apparatus and method | |
| CN203657886U (en) | Multi-point liquid level detection sensor | |
| US9347976B2 (en) | Hot stick power analyzer | |
| US4522512A (en) | Thermal conductivity measurement method | |
| CN107976722A (en) | Automatic weather station sensor on-line calibration device based on cloud | |
| CN106443196A (en) | Electrode grounding resistance measuring system and electrode grounding resistance measuring method | |
| CN111458049A (en) | Array type flexible temperature sensor wireless acquisition system | |
| CN201788161U (en) | Soil thermal resistivity measuring probe based on point heat source method | |
| CN104913860B (en) | Seawater detection method based on wireless telecommunications and device | |
| CN201594082U (en) | Portable soil thermal resistivity measuring device | |
| CN102680803A (en) | Real-time monitoring microwave dicke radiometer based on reference load temperature | |
| CN104407223A (en) | Combined resistivity measurement system and method for measuring resistivity by using combined resistivity measurement system | |
| CN109916968B (en) | Accurate measurement method and device of capacitance type grain moisture sensor | |
| CN106441437A (en) | Multifunctional portable comprehensive measurement device for soil environment parameters | |
| CN204462134U (en) | Portable multi-function soil parameters sensing device | |
| KR100429285B1 (en) | Device for monitoring self-potential using non-polarizable electrode and method thereof | |
| CN204346967U (en) | A kind of water content of soil tester based on change in resistance principle | |
| CN106596644B (en) | Measuring method and device for non-invasively measuring soil moisture | |
| Pies et al. | Autonomous monitoring system for measurement of parameters of heat collection technology at thermal active mining dumps | |
| CN204347137U (en) | Combined resistance rate measuring system | |
| CN111141785A (en) | Soil resistivity measuring device and method and storage medium | |
| CN208313471U (en) | A kind of high rock temperature tunnel deep wall rock temperature measuring device | |
| CN111537144A (en) | Pipeline leakage optical fiber monitoring auxiliary calibration system | |
| CN204944703U (en) | Based on the seawater sniffer of wireless telecommunications |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20170222 |
|
| RJ01 | Rejection of invention patent application after publication |