CN2896278Y - Portable soil temperature, humidity data collector - Google Patents
Portable soil temperature, humidity data collector Download PDFInfo
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- CN2896278Y CN2896278Y CN 200620026085 CN200620026085U CN2896278Y CN 2896278 Y CN2896278 Y CN 2896278Y CN 200620026085 CN200620026085 CN 200620026085 CN 200620026085 U CN200620026085 U CN 200620026085U CN 2896278 Y CN2896278 Y CN 2896278Y
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- soil temperature
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Abstract
The utility model provides a portable soil temperature and humidity data collector, which, according to technical components, comprises a measuring control main frame, a power supply system, an externally connected temperature sensor and a humidity sensor; wherein the measuring control main frame is provided in the shell with a monolith computer, a power supply as well as a data display and the analog-to-digital converter that are respectively connected to the monolith computer; the measuring control main frame is provided in the shell with a sensor interface that is used in the the analog-to-digital converter and is connected with the external temperature and humidity sensors as well as a charge interface that is used to charge the system. The temperature sensor in the utility model comprises a stainless steel tubular sealing probe, which is connected to a handle through a source nipple and a fixed nut and is provided with a mechanical core at the front end; and the mechanical core is connected to the drawn-out wire at the rear end through a lead wire. Advantages of the utility model: having small size, light weight, easy operation and rapid collection; being suitable for taken outside and capable of real-time measurement to the soil temperature and humidity.
Description
Technical field
The utility model relates to a kind of data acquisition unit that can gather, handle temperature, the humidity information of soil.
Background technology
In agricultural production, usually need the soil moisture and humidity are carried out measuring in real time fast and lasting dynamic monitoring, therefore be starved of a kind of simple installation, simple to operate, testing tool that picking rate is fast.
The method of existing measured soil moisture data is earth boring auger oven drying methods.The gatherer process of its data is: utilize earth boring auger to squeeze into the below ground certain depth, take out pedotheque, again the soil sample of taking out is put into the aluminium box of known quality, utilized oven for drying after taking back the laboratory, then according to the water cut of the unit of the calculating of poor quality soil before and after the oven dry.This method needs long experimental period obtain data, thereby and soil sample the error that causes test figure also may appear losing in transportation, weighing process, often can not react the real-time condition of soil moisture timely.In addition, in the actual monitoring of soil property index,, reduce damage, require the soil property index of obtaining simultaneously as much as possible in one-shot measurement because of fetching earth plant growth being caused in order to protect soil layer.Therefore, development have volume little, in light weight, can obtain a plurality of indexs simultaneously and can calculate fast, the collector of video data is necessary.
Yet also there is blank in China at the manufacture view of soil temperature, humidity collector, at present the applied collector that mostly is external import.These collectors are the cost height not only, and also needs according to the soil types of China each department its parameter and model to be proofreaied and correct when reality is used.Though the domestic development that has also begun the homogeneous data collector, but can only carry out at the data acquisition modes of certain character of soil or certain sensor, as single humidity collector or Temperature sampler, and the weight of these instruments, volume are all very big, are not suitable for the portable requirement of field work.
The utility model content
Problem to be solved in the utility model is: overcome the deficiencies in the prior art, providing a kind of can measure temperature, the humidity situation of soil simultaneously in real time, with portable soil temperature, the humidity data collector of timely grasp soil moisture content and dynamic change thereof.
Technology of the present utility model constitutes, and comprises measuring main control system, electric power system and external temperature sensor and humidity sensor; The data display equipment and the analog to digital converter that are provided with single-chip microcomputer, power supply in the shell of described measurement main control system and connect described single-chip microcomputer respectively, the shell of described measurement main control system is provided with sensor interface and charging inlet, described analog to digital converter connects external temperature sensor and humidity sensor by described sensor interface, and described charging inlet connects power supply.
Described single-chip microcomputer adopts the AT89C51 monolithic;
Described analog to digital converter adopts the ADC0808 chip.
Temperature sensor in the utility model comprises stainless steel tubular type enclosed probe, and described probe is connected handle by screw thread mouth with hold-down nut, and the Inner Front End of described probe is provided with movement, and described movement connects the extension line of handle rear end by lead.
Described movement adopts high-precision semiconductor temperature sensor chip DS18B20;
The measurement range of described temperature sensor is 85 ℃～-55 ℃;
The measuring accuracy of described temperature sensor is ± 0.5 ℃ between 85 ℃～-10 ℃.
The utility model compared with prior art, its beneficial effect is: volume is little, and is in light weight, simple to operate, simple installation, picking rate is fast, be convenient to the field and carry, can measure in real time soil temperature, humidity simultaneously, so that in time grasp dynamic changes such as soil moisture content and temperature regime.Remove this, the utility model also possesses cheap advantage owing to selected function, the high chip of price comparison for use.
Description of drawings
Fig. 1 is a housing face-plate synoptic diagram of measuring main control system in the utility model;
Fig. 2 is the principle of compositionality figure that measures main control system in the utility model;
Fig. 3 is the structural representation of temperature sensor in the utility model;
Fig. 4 is the circuit diagram of part of data acquisition in the utility model;
Fig. 5 is the circuit diagram of system power supply module in the utility model;
Fig. 6 is the circuit diagram of data communication module in the utility model;
Fig. 7 is a workflow diagram of the present utility model.
Embodiment
Below in conjunction with drawings and embodiments the utility model is done to specifically describe.
Fig. 1 shows the housing face-plate design conditions of measuring main control system in the utility model.As seen from the figure, described housing face-plate is provided with charging socket 1, humidity sensor socket 2, temperature sensor socket 3, temperature data display window 4, humidity data display window 5, power on light 6 and power switch 7.
Fig. 2 shows the principle of compositionality of measuring main control system in the utility model.As seen from the figure, in described shell, be provided with the single-chip microcomputer of the system of being responsible for control, the circuit board of described single-chip microcomputer is provided with data display equipment and the analog to digital converter that is connected with described single-chip microcomputer, and described shell is provided with sensor interface and charging inlet.Described sensor interface can make described analog to digital converter connect the temperature sensor and the humidity sensor of outer setting, and described charging inlet connects the power supply that is arranged in the described measurement main control system, is used to system's charging.
Humidity sensor in the utility model has been quoted existing equipment, and temperature sensor then is the autonomous Design development.
Fig. 3 shows the structure of described temperature sensor.Described temperature sensor, comprise stainless steel tubular type enclosed probe 13, described probe 13 is connected handle 16 by screw thread mouth 14 with hold-down nut 15, and the front end of described probe 13 inside is provided with movement 11, and described movement 11 connects the extension line 17 of described handle 16 rear ends by lead 12.The probe 13 of this temperature sensor is owing to encapsulated by stainless-steel tube, so can be deep into deep subsoil carries out temperature survey, the movement 11 of its probe 13 inside is a DS18B20 high-precision semiconductor temperature sensing chip, can measure the temperature variation of 85 ℃～-55 ℃ of scopes, measuring accuracy is ± 0.5 ℃ in 85 ℃～10 ℃ scopes.
Fig. 4 shows the circuit design of part of data acquisition, and it comprises single chip computer AT 89C51, analog to digital converter ADC0809, internal memory and port extended chip 8155H, power supply fiducial chip LM336 and digital trigger chip 74LS74.Wherein: the FPDP of ADC0809 links to each other with the input port of AT89C51; The address port of ADC0809 links to each other with 8155, carries out port and selects; The control port of ADC0809 links to each other with the p2 mouth of AT89C51, carries out signals collecting control; The ADC0809 clock port links to each other with 741S74, and the clock signal of ADC0809 is provided; The data acquisition end of ADC0809 links to each other with the input signal of humidity sensor; The reference voltage of ADC0809 is provided by the LM336 reference circuits; AT89C51 links to each other with 8155.
Fig. 5 shows the circuit design of system power supply module in the utility model, and it comprises voltage three-terminal voltage-stabilizing 7805 chips, and its major function is to provide burning voltage for system.
Fig. 6 shows the circuit design of data communication module in the utility model, and it comprises serial port communication chip MAX232 chip, and its major function is and the PC communication.
In this system, 8155H has two effects, and the one, the port of expansion AT 89C51 system, the 2nd, the RAM of expansion AT 89C51 system (can expand 250 bytes to); The effect of LM336 circuit is the reference voltage that 2.5V is provided for ADC0809; The MAX232 chip is used for system and computing machine or other RS232 interfacing equipment communications, and links to each other with AT89C51; AT89C51 is mainly used in the control of total system; ADC0809 is responsible for the collection of data, and analog signal conversion is become digital signal; 74LS74 provides the work pulse for ADC0809.
In actual applications, the utility model by humidity sensor socket 2 and temperature sensor socket 3 external soil humidity sensors and soil moisture sensor on the panel shown in Figure 1 after, can gather temperature, the humidity parameter of soil simultaneously.Its workflow is as shown in Figure 7:
Energized at first---instrument makes zero or initialization------is digital signal with analog signal conversion by analog to digital converter---single-chip microcomputer analyzes computing that temperature, humidity sensor are gathered the soil data simultaneously and be digital signal with the analog signal conversion of their output, and then be converted to the reading of the soil moisture and water cut---by display window 4 and display window 5 display result.
Portable soil temperature of the present utility model, humidity data collector have been taken into account the comprehensive principle of comparing of economy, durability and usability when design.The each several part selection of components is as follows:
Described single-chip microcomputer has been selected the AT89C51 monolithic of 51 series; Analog to digital converter has been selected ADC0808 or ADC0809 chip, though the acquisition precision of this chip is 8, but (reference power supply has adopted the LM336 reference power supply chip shown in Fig. 4 to the voltage setting by reference voltage end, its voltage is 2.5V), can select measurement range, and but the output of combined sensor regulates, and plays the effect of 16 chip acquisition precisions.
Shell of the present utility model adopts metallic aluminium to make, and this shell is not only firmer than plastic casing, and is difficult for getting rusty, and possesses anti-low temperature, characteristic such as anti-aging.
Sensor probe in the utility model, adopt the stainless pin tube designs, its fundamental purpose: the one, make in the easier insertion soil of probe; The 2nd, prevent to pop one's head in aging or get rusty and influence the precision of image data.
Display element in the utility model is selected light emitting diode for use, is difficult for the defective that observation shows numerical value when the stronger field work of light to overcome other display materials such as liquid crystal.
The utility model adopts accumulator to solve powerup issue, so that away from the field work of power supply.Described accumulator employing capacity is the common lead acid accumulator of 7AH, and can charge by the charging socket on the panel.
The utility model on the basis of using soil moisture sensor and soil humidity sensor, has carried out the improvement of following several respects in order to solve the problem that the soil real time status can not be in time reacted in present agricultural land soil data acquisition:
The first, adopt 51 lower series A T89C51 of cost as host chip, realize Data Receiving, calculate conversion and Presentation Function by efficient integrated circuit (IC) design;
Second, the socket that connects temperature sensor and humidity sensor is set, so that the temperature and humidity data of soil can be gathered, calculate and be shown to instrument simultaneously, reach and once gather the purpose of obtaining two indexs, and be digital signal with the analog signal conversion that collects simultaneously, and then be converted to the reading of the soil moisture and humidity, and described sensor interface also has extended function, can connect other universal sensor according to actual needs;
The 3rd, adopt the storage battery power supply mode, utilize its rechargeable characteristics to make use of the present utility model break away from power limitations, and reduce the power consumption of each assembly with its efficient calculation by integrated circuit, make the stream time of its battery reach 70 hours, to satisfy the open-air requirement of image data fast;
The 4th, adopt high brightness LED video data information, and on display panel, be provided with double 4 display mode, to be fit to the strong operating environment of outdoor light, even this instrument also can clearly be seen its data presentation in the open air when illumination condition is operated down;
The 5th, adopted metallic aluminium to make shell, utilize it to be better than the soundness of general plastic casing and be difficult for getting rusty, anti-low temperature, characteristic such as anti-aging, prolong serviceable life of this instrument;
The 6th, this design makes the whole instrument volume little, in light weight, is convenient to move, and has reached real portable purpose.
In sum, advantage of the present utility model is:
1. measured soil temperature, humidity in real time, be convenient in time grasp soil moisture content, temperature regime and dynamic change thereof, can be used for agrotechnical research and to the real-time control of soil temperature, humidity in the agricultural production, also can be used for some to the environment adjusting of harsh crops of soil temperature, humidity requirement, and other are to soil temperature, the demanding occasion of humidity information real-time.
2. adopt the power supply mode of accumulator, be convenient to this instrument, and carry out the instrument charging, removed from and opened the trouble that cabinet is changed battery, can use for a long time by the socket on the panel in local operation away from power supply.
3. adopt the separate type design of temperature, humidity sensor and collector host, be easy to carry and remove and install fast.
Abovely with reference to the drawings and specific embodiments the technical solution of the utility model is schematically described, this description does not have restricted, and each is shown in the drawings also to be one of embodiment of the present utility model.If those of ordinary skill in the art is enlightened by it, create under the situation of aim not breaking away from the utility model, make the various conspicuous modification of aspects such as the formation of this instrument and detail setting thereof, all should belong to protection domain of the present utility model.
Claims (7)
1. a portable soil temperature, humidity data collector comprise and measure main control system and electric power system, it is characterized in that it also comprises external temperature sensor and humidity sensor; The data display equipment and the analog to digital converter that are provided with single-chip microcomputer, power supply in the shell of described measurement main control system and connect described single-chip microcomputer respectively, the shell of described measurement main control system is provided with sensor interface and charging inlet, described analog to digital converter connects external temperature sensor and humidity sensor by described sensor interface, and described charging inlet connects power supply.
2. portable soil temperature according to claim 1, humidity data collector is characterized in that: described single-chip microcomputer adopts the AT89C51 monolithic.
3. portable soil temperature according to claim 1, humidity data collector is characterized in that: described analog to digital converter adopts the ADC0808 chip.
4. portable soil temperature according to claim 1, humidity data collector, it is characterized in that: described temperature sensor, the handle that is connected with described probe by stainless steel tubular type enclosed probe, by screw thread mouth and hold-down nut, the movement that is arranged on described probe Inner Front End constitute, and described movement connects the extension line of described handle rear end by lead.
5. portable soil temperature according to claim 1, humidity data collector is characterized in that: described movement adopts high-precision semiconductor temperature sensor chip DS18B20.
6. portable soil temperature according to claim 1, humidity data collector is characterized in that: the measurement range of described temperature sensor is 85 ℃～-55 ℃.
7. portable soil temperature according to claim 1, humidity data collector is characterized in that: the measuring accuracy of described temperature sensor is ± 0.5 ℃ between 85 ℃～-10 ℃.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620026085 CN2896278Y (en) | 2006-05-19 | 2006-05-19 | Portable soil temperature, humidity data collector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620026085 CN2896278Y (en) | 2006-05-19 | 2006-05-19 | Portable soil temperature, humidity data collector |
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| CN2896278Y true CN2896278Y (en) | 2007-05-02 |
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| CN 200620026085 Expired - Fee Related CN2896278Y (en) | 2006-05-19 | 2006-05-19 | Portable soil temperature, humidity data collector |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101949739A (en) * | 2010-08-24 | 2011-01-19 | 甘肃农业大学 | Device for installing soil temperature sensor |
| CN103398739A (en) * | 2013-07-24 | 2013-11-20 | 北京盈胜泰科技术有限公司 | Handheld soil parameter measurement device and soil parameter measurement method |
| CN105319336A (en) * | 2015-10-27 | 2016-02-10 | 哈尔滨朋来科技开发有限公司 | Portable wireless soil PH value monitoring device |
| CN113671149A (en) * | 2020-05-15 | 2021-11-19 | 农业农村部规划设计研究院 | Soil parameter measuring method and multifunctional portable soil parameter measuring device adopted by same |
-
2006
- 2006-05-19 CN CN 200620026085 patent/CN2896278Y/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101949739A (en) * | 2010-08-24 | 2011-01-19 | 甘肃农业大学 | Device for installing soil temperature sensor |
| CN103398739A (en) * | 2013-07-24 | 2013-11-20 | 北京盈胜泰科技术有限公司 | Handheld soil parameter measurement device and soil parameter measurement method |
| CN103398739B (en) * | 2013-07-24 | 2015-10-28 | 北京安赛博技术有限公司 | A kind of Handheld soil parameter measuring apparatus and soil parameters measuring method |
| CN105319336A (en) * | 2015-10-27 | 2016-02-10 | 哈尔滨朋来科技开发有限公司 | Portable wireless soil PH value monitoring device |
| CN113671149A (en) * | 2020-05-15 | 2021-11-19 | 农业农村部规划设计研究院 | Soil parameter measuring method and multifunctional portable soil parameter measuring device adopted by same |
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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: 20070502 Termination date: 20110519 |