CN202204605U - Soil temperature sensing and transmitting device - Google Patents
Soil temperature sensing and transmitting device Download PDFInfo
- Publication number
- CN202204605U CN202204605U CN201120292657.1U CN201120292657U CN202204605U CN 202204605 U CN202204605 U CN 202204605U CN 201120292657 U CN201120292657 U CN 201120292657U CN 202204605 U CN202204605 U CN 202204605U
- Authority
- CN
- China
- Prior art keywords
- temperature
- temperature sensing
- soil
- sensing module
- shell
- 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.)
- Expired - Fee Related
Links
Images
Abstract
The utility model discloses a soil temperature sensing and transmitting device, and relates to the technical field of soil temperature measurement. The soil temperature sensing and transmitting device comprises a temperature sensing module and a signal transmitting module which are connected with each other; wherein the temperature sensing module is used for obtaining a temperature parameter of the soil, and sending the temperature parameter to the signal transmitting module; the signal transmitting module is used for converting the temperature parameter into data which can be identified by a data acquisition instrument, and sending the data to the data acquisition instrument; and the temperature sensing module further comprises a temperature sensor, a cylindrical metal sleeve and a metal head arranged at one end of the metal sleeve, wherein the temperature sensor is fixed in the metal sleeve and arranged at a top position of the metal head. The soil temperature sensing and transmitting device of the utility model changes the traditional long sleeve pipe mode in structure, and adopts the temperature sensor to sense the temperature of an end point, thus an influence of a heat conduction effect on measuring the soil temperature can be reduced, in order to raise accuracy for measuring the soil temperature.
Description
Technical field
The utility model relates to soil moisture field of measuring technique, and particularly a kind of soil moisture perception becomes send device.
Background technology
The soil moisture is one of important ecological factors of crop growth.The soil moisture not only can influence formalness and the inner structure of plant, and can influence the variation of organic substance in the plant.The height of the soil moisture also concerns the sowing morning and evening of crop, the tiller growth and decline and the security problems of surviving the winter.Because it is the main Root Distribution of crops in depth of soil 0.5m, so carry out the mensuration of the soil moisture, is grasped temperature changing regularity, all significant to agricultural production service in real time and theoretical research.
Soil moisture measuring equipment at present relatively more commonly used mainly adopts contactless, transistor PN, thermistor and the integrated form digital temperature sensor measured soil temperature of infrared spectrum; And the sensor contact portion processed encapsulation to satisfy soil environment; Increase modulate circuit simultaneously and the signal of temperature sensor is become send, finally be connected to data acquisition instrument to obtain the soil moisture.
Utilize infrared non-contact measurement temperature convenient, but the precision low cost is higher, and can only the measured soil skin temperature; It is low to adopt PN junction to measure with the thermosensitive resistance measurement cost, but all need demarcate and calibrate perceptual parameters before using with in the process, and its measuring accuracy can not satisfy.PT100, PT1000 constant resistance formula are more in practical application, have relatively high expectations but change sent, and seldom can reach its precision, bring into play its advantage of high precision; The TM system class of the U.S. letter DS18B20 of company of the integrated form digital sensor such as the U.S., Microchip etc. also has certain application; Because its precision is mostly greater than 0.5 degree; The higher chip of precision mainly concentrates in the normal temperature section, and other temperature range precision is bigger, can not satisfy more high-precision measurement demand; In addition, adopt the temperature transmitter of industrial armouring encapsulation, adopt PT100 to obtain temperature, can obtain higher precision, but, can not in water, soak because the product leakproofness is not enough, actual bad in the outdoor application effect.
Soil moisture measuring sonde mostly adopts the stainless-steel tube encapsulation, and concrete measurement all is that point is measured, and long metal tube is because conduction of heat causes accuracy of measurement not high.The sensor change send device much can not satisfy open-air environment for use, is applied to soil moisture measurement at aspects such as leakproofness, sense temperature compensation and has certain defective.And soil layer fathoms control generally through in-site measurement, complex operation.
The utility model content
The technical matters that (one) will solve
The technical matters that the utility model will solve is: the accuracy that how to improve the measured soil temperature.
(2) technical scheme
For solving the problems of the technologies described above, the utility model provides a kind of soil moisture perception change to send the said device of device to comprise: interconnective temperature sensing module and signal transmitting module,
Said temperature sensing module is used to obtain the temperature parameter of soil, and said temperature parameter is sent to said signal transmitting module;
Said signal transmitting module, being used for said temperature parameter is converted into can be by data acquisition instrument institute recognition data, and is sent to said data acquisition instrument;
Said temperature sensing module further comprises: the metallic sheath of temperature sensor, tubular and the ferrule of being located at said metallic sheath one end, said temperature sensor is fixed in the said metallic sheath, and is positioned at the tip position of said ferrule.
Preferably, said temperature sensing module also comprises: the shell of tubular, said shell detachably is installed on the outside of said metallic sheath.
Preferably, said shell is a fiberglass.
Preferably, said shell outer surface indicates size scale.
Preferably, connect through connection cable between said temperature sensing module and the signal transmitting module.
Preferably, said connection cable is through heat-shrink tube and said shell enclosed package.
Preferably, said signal transmitting module is made up of transmission circuit and encapsulating shell, and said transmission circuit is located in the said encapsulating shell;
Preferably, said transmission circuit comprises input end, cable interference compensation module, conversion of signals chip and the output terminal that connects successively,
Said input end is used to receive said temperature parameter;
Said cable interference compensation module is used to reduce said temperature parameter in the signal attenuation that causes through said connection cable;
Said conversion of signals chip, being used for said temperature parameter is converted into can be by data acquisition instrument institute recognition data, and is sent to said output acquisition instrument through said output terminal.
Preferably, said transmission circuit also comprises: the calibration rheostat, be connected with said input end, and be used for before said temperature sensing module obtains the temperature parameter of soil, carry out the zero degree calibration.
Preferably, said transmission circuit also comprises: the range rheostat, be connected with said input end, and be used for before said temperature sensing module obtains the temperature parameter of soil, regulate and measure range.
(3) beneficial effect
The utility model structurally changes the long sleeve pipe mode of tradition, through adopting temperature sensor perception ferrule head temperature, reduces conduction of heat to the measured soil Influence of Temperature; To improve the accuracy of measured soil temperature; In addition, at shell subscript dimensioning scale, make things convenient for the control survey degree of depth; And through cable interference compensation module minimizing signal attenuation; Make the device of the utility model can use different ranges through the range rheostat, to adapt to the demand in different application field, also the enclosed type through temperature sensing module and signal transmitting module designs; Make the device of the utility model can be applied to field environment, and can be advantageously used in the measurement of other environment temperatures such as air, water.
Description of drawings
Fig. 1 is the structural representation that send device according to the soil moisture perception change of a kind of embodiment of the utility model;
Fig. 2 is that soil moisture perception shown in Figure 1 becomes the structural representation that send signal transmitting module in the device;
Fig. 3 is the concrete structure synoptic diagram of transmission circuit in the signal transmitting module shown in Figure 2.
Wherein, 1: ferrule; 2: temperature sensor; 3: shell; 4: heat-shrink tube; 5: connection cable; 6: the signal transmitting module; 7: communication cable; 8: encapsulating shell; 9: input end; 10: cable interference compensation module; 11: the calibration rheostat; 12: the range rheostat; 13: the conversion of signals chip; 14: output terminal; 15: metallic sheath.
Embodiment
Below in conjunction with accompanying drawing and embodiment, the embodiment of the utility model is described in further detail.Following examples are used to explain the utility model, but are not used for limiting the scope of the utility model.
With reference to Fig. 1, the device of this embodiment comprises: interconnective temperature sensing module and signal transmitting module,
Said temperature sensing module is used to obtain the temperature parameter of soil, and said temperature parameter is sent to said signal transmitting module;
Said signal transmitting module 6, being used for said temperature parameter is converted into can be by data acquisition instrument institute recognition data, and is sent to said data acquisition instrument;
Said temperature sensing module further comprises: the metallic sheath 15 of temperature sensor 2, tubular and be located at the ferrule 1 of said metallic sheath one end (said metallic sheath 15 can be one-body molded with ferrule 1; Also can be to process respectively; In this embodiment; Be preferably one-body molded), said temperature sensor 2 is fixed in the said metallic sheath 15, and is positioned at the tip position of said ferrule 1.
Preferably; Said temperature sensing module also comprises: the shell 3 of tubular, and said shell 3 detachably is installed on the outside of said metallic sheath 15, in this embodiment; Through on shell 3, internal thread being set, the external thread that adapts in the arranged outside of said metallic sheath 15 is simultaneously installed.
For convenient said temperature sensing module inserts in the soil, therefore said shell needs certain intensity, and preferably, said shell 3 is a fiberglass.
For conveniently controlling and understanding fathoming of said temperature sensing module, preferably, said shell 3 outer surfaces indicate size scale.
Connect through connection cable 5 between said temperature sensing module and the signal transmitting module; For making said connection cable 5 have intensity and toughness preferably; And anticorrosion, waterproof and prevent that effectively animal bites from pulling, preferably, said connection cable 5 adopts silver-plated high temperature wire.
Preferably, said connection cable 5 is through heat-shrink tube 4 and said shell 3 enclosed package.
With reference to Fig. 2, said signal transmitting module 6 is made up of transmission circuit and encapsulating shell 8, and said transmission circuit is located in the said encapsulating shell, and in this embodiment, the integral body of said signal transmitting module 6 is passed through epoxy sealing;
With reference to Fig. 3, wherein, P2 is an input end 9, and P1 is an output terminal 14, and RP1 is calibration rheostat 11, and RP2 is a range rheostat 12, and U1 is a conversion of signals chip 13, and R1, R2 are cable interference compensation module 10.Said transmission circuit comprises input end 9, cable interference compensation module 10, conversion of signals chip 13 and the output terminal 14 that connects successively,
Said input end 9 is used to receive said temperature parameter;
Said cable interference compensation module 10 is used to reduce said temperature parameter in the signal attenuation that causes through said connection cable;
Said conversion of signals chip 13, being used for said temperature parameter is converted into can be by data acquisition instrument institute recognition data, and is sent to said output acquisition instrument through said output terminal 14; In this embodiment; Said conversion of signals chip 13 adopts the 4-20mA sensor current conversion chip XTR105 of TI; It converts said temperature parameter into the current signal of the two-wire system 4-20mA of standard accurately, and will be connected to the corresponding data acquisition instrument through communication cable 7.
For improving the measuring accuracy of said temperature sensing module, preferably, said transmission circuit also comprises: calibration rheostat 11, be connected with said input end 9, and be used for before said temperature sensing module obtains the temperature parameter of soil, carry out the zero degree calibration.
For satisfying the demand in different application field, preferably, said transmission circuit also comprises: range rheostat 12, be connected with said input end 9, and be used for before said temperature sensing module obtains the temperature parameter of soil, regulate and measure range.
The principle of work of this embodiment is: the temperature sensor 2 of two-wire system or three-wire system platinum (PT100 or PT1000) is encapsulated in the stainless metallic sheath 15 through non-conductive 704 glue casting glues, and the position is positioned at the tip position of ferrule 1.Metallic sheath 15 and shell 3 screw one through screw thread, and connection cable 5 parts are packaged in the shell 3, and shell 3 is airtight fully through heat-shrink tube 4 with connection cable 5.Temperature sensor 2 is connected with the input end 9 of transmission circuit, and temperature parameter is avoided the connection cable 5 long signal attenuations that cause through cable interference compensation module 10, and signal transmitting chip 13 provides the current drives source of 0.8mA for sensor; And to said temperature parameter amplify, the linear correction finally convert the 4-20mA current signal into; Conversion formula is Io=4mA+Vin* (40/Rg), and wherein, Io is an output current; Vin is a temperature parameter, and Rg is the resistance of calibration rheostat 11.The current signal of output is connected to data acquisition instrument through connection cable 7.
Above embodiment only is used to explain the utility model; And be not the restriction to the utility model; The those of ordinary skill in relevant technologies field under the situation of spirit that does not break away from the utility model and scope, can also be made various variations and modification; Therefore all technical schemes that are equal to also belong to the category of the utility model, and the scope of patent protection of the utility model should be defined by the claims.
Claims (10)
1. device is sent in a soil moisture perception change, it is characterized in that said device comprises: interconnective temperature sensing module and signal transmitting module,
Said temperature sensing module is used to obtain the temperature parameter of soil, and said temperature parameter is sent to said signal transmitting module;
Said signal transmitting module, being used for said temperature parameter is converted into can be by data acquisition instrument institute recognition data, and is sent to said data acquisition instrument;
Said temperature sensing module further comprises: the metallic sheath of temperature sensor, tubular and the ferrule of being located at said metallic sheath one end, said temperature sensor is fixed in the said metallic sheath, and is positioned at the tip position of said ferrule.
2. device as claimed in claim 1 is characterized in that, said temperature sensing module also comprises: the shell of tubular, said shell detachably is installed on the outside of said metallic sheath.
3. device as claimed in claim 2 is characterized in that, said shell is a fiberglass.
4. like claim 2 or 3 described devices, it is characterized in that said shell outer surface indicates size scale.
5. device as claimed in claim 2 is characterized in that, connects through connection cable between said temperature sensing module and the signal transmitting module.
6. device as claimed in claim 5 is characterized in that, said connection cable is through heat-shrink tube and said shell enclosed package.
7. device as claimed in claim 1 is characterized in that, said signal transmitting module is made up of transmission circuit and encapsulating shell, and said transmission circuit is located in the said encapsulating shell.
8. device as claimed in claim 7 is characterized in that, said transmission circuit comprises input end, cable interference compensation module, conversion of signals chip and the output terminal that connects successively,
Said input end is used to receive said temperature parameter;
Said cable interference compensation module is used to reduce said temperature parameter in the signal attenuation that causes through said connection cable;
Said conversion of signals chip, being used for said temperature parameter is converted into can be by data acquisition instrument institute recognition data, and is sent to said output acquisition instrument through said output terminal.
9. device as claimed in claim 8 is characterized in that, said transmission circuit also comprises: the calibration rheostat, be connected with said input end, and be used for before said temperature sensing module obtains the temperature parameter of soil, carry out the zero degree calibration.
10. like claim 8 or 9 described devices, it is characterized in that said transmission circuit also comprises: the range rheostat, be connected with said input end, be used for before said temperature sensing module obtains the temperature parameter of soil, regulate and measure range.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120292657.1U CN202204605U (en) | 2011-08-12 | 2011-08-12 | Soil temperature sensing and transmitting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120292657.1U CN202204605U (en) | 2011-08-12 | 2011-08-12 | Soil temperature sensing and transmitting device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202204605U true CN202204605U (en) | 2012-04-25 |
Family
ID=45968724
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201120292657.1U Expired - Fee Related CN202204605U (en) | 2011-08-12 | 2011-08-12 | Soil temperature sensing and transmitting device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202204605U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103243699A (en) * | 2013-05-22 | 2013-08-14 | 国家电网公司 | Transducer for measuring thermal parameters of soil around cable |
| CN105823570A (en) * | 2016-05-12 | 2016-08-03 | 淄博飞雁先行测控技术有限公司 | High precision digital thermometer, and temperature calculating method |
| CN106843057A (en) * | 2017-02-28 | 2017-06-13 | 黎川县东鑫实业有限公司 | Edible fungi bag data collector and multipath environment data collecting system |
-
2011
- 2011-08-12 CN CN201120292657.1U patent/CN202204605U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103243699A (en) * | 2013-05-22 | 2013-08-14 | 国家电网公司 | Transducer for measuring thermal parameters of soil around cable |
| CN103243699B (en) * | 2013-05-22 | 2015-12-23 | 国家电网公司 | A kind of cable surrounding soil thermal parameter measurement sensor |
| CN105823570A (en) * | 2016-05-12 | 2016-08-03 | 淄博飞雁先行测控技术有限公司 | High precision digital thermometer, and temperature calculating method |
| CN106843057A (en) * | 2017-02-28 | 2017-06-13 | 黎川县东鑫实业有限公司 | Edible fungi bag data collector and multipath environment data collecting system |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN202204605U (en) | Soil temperature sensing and transmitting device | |
| CN101476903A (en) | General-purpose interface collection system of sensor | |
| CN101419098B (en) | intelligent temperature isolation transmitter | |
| CN203024884U (en) | Soil temperature detection device | |
| CN106932447B (en) | A kind of compound modification method of cultivation matrix water content conductivity | |
| CN201311329Y (en) | Intelligent temperature isolating transmitter | |
| CN104330115B (en) | Ice and snow sensor | |
| CN204964054U (en) | Temperature transmitter | |
| CN204027602U (en) | Based on the agriculture Internet of Things supervising device of Fibre Optical Sensor | |
| CN204694367U (en) | A kind of data collector, sniffer and system | |
| CN201417184Y (en) | two-wire temperature transmitter | |
| CN101946643B (en) | Crop water-demand state detecting method | |
| CN202382876U (en) | Temperature transmitter | |
| CN208223667U (en) | Temperature acquisition measures transmission circuit | |
| CN202033132U (en) | Multilayer soil temperature sensor | |
| CN208254667U (en) | A kind of platinum resistance temperature sensor | |
| CN201795876U (en) | Digital thermometer | |
| CN209485565U (en) | A kind of integrated platinum resistance temp transmitter | |
| CN202153161U (en) | CAN bus-type intelligent platinum resistance thermometer | |
| CN202330335U (en) | Soil humidity sensor | |
| CN206975462U (en) | A kind of high-precision sensor signal transmitting device | |
| CN202057386U (en) | Digital communication gradient sensor | |
| CN2556655Y (en) | Atmospheric turbulance sounding device | |
| CN217384303U (en) | High-precision underwater temperature and depth measuring device | |
| RU222477U1 (en) | Autonomous sensor for layer-by-layer control of soil moisture and temperature |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120425 Termination date: 20120812 |