CN204535760U - A kind of greenhouse acquisition terminal control device - Google Patents
A kind of greenhouse acquisition terminal control device Download PDFInfo
- Publication number
- CN204535760U CN204535760U CN201520206355.6U CN201520206355U CN204535760U CN 204535760 U CN204535760 U CN 204535760U CN 201520206355 U CN201520206355 U CN 201520206355U CN 204535760 U CN204535760 U CN 204535760U
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- cell encoder
- control device
- processing unit
- terminal control
- acquisition terminal
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Abstract
The utility model discloses a kind of greenhouse acquisition terminal control device, comprise detection sensor unit, processing unit, cell encoder and differential bus system, described detection sensor unit is connected with described processing unit, the described unit that accepts is connected with described cell encoder and differential bus system, and described detection sensor unit is also provided with pre-arcing road between being connected with described processing unit; Described processing unit comprises curvature correction arithmetical unit, and described curvature correction arithmetical unit is connected with D/A converter, totalizer and cell encoder, is also connected with real time clock circuit between described cell encoder and described D/A converter; Described differential bus system is connected with described cell encoder, and described differential bus system is also connected with bus interface circuit.The utility model circuit structure is simple.Reasonable in design and easy for operation, failure rate is low, adopts integrated control circui, can be in real time.Gather soil parameters accurately for processor process.
Description
Technical field
The utility model relates to a kind of temperature collecting device, is specifically related to a kind of temperature collecting device being applicable to warmhouse booth.
Background technology
Along with the requirement of industrial and agricultural production to temperature is more and more higher, Measurement accuracy control temperature or humidity environment parameter become most important.In engineer applied, the change in two ways change of temperature being converted to electric signal is adopted in the collection of Temperature Quantity usually, one is thermopair, it is exactly the change along with temperature, a voltage is had to change along with the change of temperature at the output terminal of thermopair, this voltage is amplified, just can carry out showing or go to control corresponding automatic equipment; Another kind is thermal resistance, utilize the temperature characterisitic of the material of resistance, namely temperature element is along with the changes in resistance value of measuring tempeature is also in change, utilize the variation characteristic of resistance, control amplifying circuit, just can obtain a temperature signal, go promote instrument display or go to control aut.eq., what show on the spot is exactly common fluid column formula and pressure representative formula.Thermocouple temperature measurement method is because directly contacting with measurand, and not by the impact of intermediate medium, measuring accuracy is high; Conventional thermopair from subzero 50 degrees Celsius-1600 degrees Celsius all can continuous coverage, some special thermopair is minimum to be measured-269 degrees Celsius (as golden iron nickel chromium triangles), and reach as high as 2800 degrees Celsius (as tungsten, rheniums), measurement range is wide; Thermopair is normally made up of two kinds of different tinsels, and not by the restriction of size and beginning, has protective casing outward, use very convenient, simple structure.
Utility model content
The purpose of this utility model is to solve deficiency of the prior art, provides that a kind of temperature acquisition accuracy rate is high, precision is high, structure is simple, the easy to operate acquisition terminal control device being applicable to greenhouse.
For achieving the above object, a kind of greenhouse described in the utility model acquisition terminal control device, comprise detection sensor unit, processing unit, cell encoder and differential bus system, described detection sensor unit is connected with described processing unit, described processing unit is connected with described cell encoder and differential bus system, and described detection sensor unit is also provided with pre-arcing road between being connected with described processing unit; Described processing unit comprises curvature correction arithmetical unit, and described curvature correction arithmetical unit is connected with D/A converter, totalizer and cell encoder, is also connected with real time clock circuit between described cell encoder and described D/A converter; Described differential bus system is connected with described cell encoder, and described differential bus system is also connected with bus interface circuit.
As optimization, described detection sensor unit comprises optical sensor, air temperature sensor, air humidity sensor, soil temperature sensor, soil humidity sensor and carbon dioxide sensor.
As optimization, described pre-arcing road is also connected with preemphasis circuit, described preemphasis circuit input DC3.3V voltage.
As optimization, described totalizer is also connected with temperature-compensation circuit.
As optimization, described curvature correction arithmetical unit carries systematic parameter storer.
As optimization, described cell encoder adopts 16 bit CPU codings to add CRC, is connected between described cell encoder with described differential bus system by spi bus.
As optimization, described pre-arcing road is connected with the mutual communication of described D/A converter.
Beneficial effect: the utility model circuit structure is simple.Reasonable in design and easy for operation, failure rate is low, adopts integrated control circui, can be in real time.Gather soil parameters accurately for processor process.
Accompanying drawing explanation
Fig. 1 is circuit control principle block diagram of the present utility model.
Embodiment
A kind of greenhouse acquisition terminal control device as shown in Figure 1, comprise detection sensor unit, processing unit, cell encoder and differential bus system, described detection sensor unit is connected with described processing unit, described processing unit is connected with described cell encoder and differential bus system, and described detection sensor unit is also provided with pre-arcing road between being connected with described processing unit; Described processing unit comprises curvature correction arithmetical unit, and described curvature correction arithmetical unit is connected with D/A converter, totalizer and cell encoder, is also connected with real time clock circuit between described cell encoder and described D/A converter; Described differential bus system is connected with described cell encoder, and described differential bus system is also connected with bus interface circuit.
As the further optimization of technique scheme, described detection sensor unit comprises optical sensor, air temperature sensor, air humidity sensor, soil temperature sensor, soil humidity sensor and carbon dioxide sensor.Described pre-arcing road is also connected with preemphasis circuit, described preemphasis circuit input DC3.3V voltage.Described totalizer is also connected with temperature-compensation circuit.Described curvature correction arithmetical unit carries systematic parameter storer, and described cell encoder adopts 16 bit CPU codings to add CRC, is connected between described cell encoder with described differential bus system by spi bus.Described pre-arcing road is connected with the mutual communication of described D/A converter.
The course of work of the present utility model is: first the temperature detected, humidity, illumination or carbon dioxide parameter are carried out DA conversion through pre-arcing road by detecting sensor circuit, then after curvature correction calculation process, be transferred to scrambler to encode, scrambler is transferred to other disposal systems further through differential bus receive-transmit system and processes.Pre-arcing road in native system, with correcting circuit, temperature-compensation circuit, systematic parameter storer.Curvature correction computing, the equal input voltage 3.3V of scrambler.
Claims (7)
1. a greenhouse acquisition terminal control device, it is characterized in that: comprise detection sensor unit, processing unit, cell encoder and differential bus system, described detection sensor unit is connected with described processing unit, described processing unit is connected with described cell encoder and differential bus system, and described detection sensor unit is also provided with pre-arcing road between being connected with described processing unit; Described processing unit comprises curvature correction arithmetical unit, and described curvature correction arithmetical unit is connected with D/A converter, totalizer and cell encoder, is also connected with real time clock circuit between described cell encoder and described D/A converter; Described differential bus system is connected with described cell encoder, and described differential bus system is also connected with bus interface circuit.
2. a kind of greenhouse according to claim 1 acquisition terminal control device, is characterized in that: described detection sensor unit comprises optical sensor, air temperature sensor, air humidity sensor, soil temperature sensor, soil humidity sensor and carbon dioxide sensor.
3. a kind of greenhouse according to claim 1 acquisition terminal control device, is characterized in that: described pre-arcing road is also connected with preemphasis circuit, described preemphasis circuit input DC3.3V voltage.
4. a kind of greenhouse according to claim 1 acquisition terminal control device, is characterized in that: described totalizer is also connected with temperature-compensation circuit.
5. a kind of greenhouse according to claim 1 acquisition terminal control device, is characterized in that: described curvature correction arithmetical unit carries systematic parameter storer.
6. a kind of greenhouse according to claim 1 acquisition terminal control device, is characterized in that: described cell encoder adopts 16 bit CPU codings to add CRC, is connected between described cell encoder with described differential bus system by spi bus.
7. a kind of greenhouse according to claim 1 acquisition terminal control device, is characterized in that: described pre-arcing road is connected with the mutual communication of described D/A converter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520206355.6U CN204535760U (en) | 2015-04-08 | 2015-04-08 | A kind of greenhouse acquisition terminal control device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520206355.6U CN204535760U (en) | 2015-04-08 | 2015-04-08 | A kind of greenhouse acquisition terminal control device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204535760U true CN204535760U (en) | 2015-08-05 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520206355.6U Expired - Fee Related CN204535760U (en) | 2015-04-08 | 2015-04-08 | A kind of greenhouse acquisition terminal control device |
Country Status (1)
| Country | Link |
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| CN (1) | CN204535760U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105571651A (en) * | 2016-03-18 | 2016-05-11 | 苏州大学 | Data online measurement system |
| CN109557949A (en) * | 2019-01-09 | 2019-04-02 | 贵州大学 | A kind of electronic stratified soil temperature and humidity measurement control device |
-
2015
- 2015-04-08 CN CN201520206355.6U patent/CN204535760U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105571651A (en) * | 2016-03-18 | 2016-05-11 | 苏州大学 | Data online measurement system |
| CN109557949A (en) * | 2019-01-09 | 2019-04-02 | 贵州大学 | A kind of electronic stratified soil temperature and humidity measurement control device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150805 Termination date: 20210408 |
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| CF01 | Termination of patent right due to non-payment of annual fee |