CN112636302A - Multi-path seedling raising tray water temperature monitoring protection circuit - Google Patents
Multi-path seedling raising tray water temperature monitoring protection circuit Download PDFInfo
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- CN112636302A CN112636302A CN202011524022.XA CN202011524022A CN112636302A CN 112636302 A CN112636302 A CN 112636302A CN 202011524022 A CN202011524022 A CN 202011524022A CN 112636302 A CN112636302 A CN 112636302A
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 20
- 238000012544 monitoring process Methods 0.000 title claims abstract description 8
- 238000001514 detection method Methods 0.000 claims abstract description 5
- 238000002955 isolation Methods 0.000 abstract description 5
- 241000208125 Nicotiana Species 0.000 description 5
- 235000002637 Nicotiana tabacum Nutrition 0.000 description 5
- 235000015097 nutrients Nutrition 0.000 description 4
- 238000010586 diagram Methods 0.000 description 2
- 238000007667 floating Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000017074 necrotic cell death Effects 0.000 description 1
- 238000010899 nucleation Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
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Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H5/00—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal non-electric working conditions with or without subsequent reconnection
- H02H5/04—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal non-electric working conditions with or without subsequent reconnection responsive to abnormal temperature
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01G—HORTICULTURE; CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPS OR SEAWEED; FORESTRY; WATERING
- A01G31/00—Soilless cultivation, e.g. hydroponics
- A01G31/02—Special apparatus therefor
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P60/00—Technologies relating to agriculture, livestock or agroalimentary industries
- Y02P60/20—Reduction of greenhouse gas [GHG] emissions in agriculture, e.g. CO2
- Y02P60/21—Dinitrogen oxide [N2O], e.g. using aquaponics, hydroponics or efficiency measures
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- Life Sciences & Earth Sciences (AREA)
- Environmental Sciences (AREA)
- Cultivation Receptacles Or Flower-Pots, Or Pots For Seedlings (AREA)
Abstract
The invention discloses a multi-path seedling tray water temperature monitoring protection circuit.A water temperature detection signal IN IN1IN2 is respectively detected by a water temperature detection circuit IN a seedling tray 1-2; d1 is an over-temperature display diode in the seedling tray 1, D2 is an over-temperature display diode in the seedling tray 2, the anode end of D3 is over-temperature protection output of the seedling tray 1, the anode end of D4 is over-temperature protection output of the seedling tray 2, and the anode ends of D3 and D4 are connected together to realize a hardware isolation function and serve as output of a whole protection signal OUT; the circuit can provide multiple paths of temperature protection circuits at the same time, each path can carry out over-temperature protection and output respective protection signals, and the output protection signals among the protection circuits are mutually isolated by hardware and cannot be interfered; meanwhile, the seedling tray has a multi-path display function, can simultaneously display the over-temperature conditions in different seedling trays, strongly supports the unattended seedling raising environment, and has better economic use.
Description
Technical Field
The invention relates to the field of tobacco seedling culture, in particular to a seedling culture tray water temperature monitoring and protecting system.
Background
The tobacco seedling culture is an important link in the tobacco production process, and the seedling is sufficient, uniform, strong and timely transplanted, so that the tobacco seedling culture is an important basis for obtaining high-quality and high-yield tobacco leaves.
Currently, the seedling raising modes in China mainly include floating seedling raising, tray seedling raising, temporary planting seedling raising and the like. The floating seedling culture is used as a non-traditional intensive seedling culture technology, and integrates the advantages of soilless culture, water culture, container culture and the like. In the early stage of seedling culture, generally seeding to a disc sealing period, placing a seedling disc in nutrient solution containing nutrients, and keeping the water depth at about 1.0-1.5 cm; the water and nutrients are supplied by the nutrient solution.
However, among the current mode of growing seedlings, most time unmanned on duty, temperature control is difficult for mastering in the seedling tray, and the temperature is overheated can lead to the root system necrosis, simultaneously, generally has a plurality of seedling trays to go on simultaneously when growing seedlings, can't directly perceivedly master the temperature condition of each seedling tray simultaneously, when appearing the temperature and being overheated, can not effectively carry out the protection and handle.
Disclosure of Invention
The invention provides a multi-path temperature protection circuit with an isolation function, which can simultaneously display the over-temperature conditions in different seedling trays and carry out effective temperature protection on the water entering the seedling trays.
The technical scheme of the invention is as follows:
a multi-channel seedling tray water temperature monitoring and protecting system circuit is characterized IN that IN1 and IN2 are detection signals of water temperatures IN seedling trays 1-2 respectively; d1 is an over-temperature display diode in the seedling tray 1, D2 is an over-temperature display diode in the seedling tray 2, the anode end of the diode D3 is over-temperature protection output of the seedling tray 1, and the anode end of the diode D4 is over-temperature protection output of the seedling tray 2, and the over-temperature display diode is characterized in that the model of a triode Q1 is 9014, the collector is connected with one end of a resistor R3, one end of a resistor R2, the cathode end of D1 and the cathode end of D3; the other end of the resistor R3 is connected with an input temperature signal, the other end of the resistor R2 is connected with a power supply, the anode end of D1 is connected with the power supply through the resistor R1, and the anode end of D3 is used as a circuit output end; the model of the triode Q2 is 9014, a collector is connected with one end of the resistor R5, one end of the resistor R6, the cathode end of the D2 and the cathode end of the D4; the other end of the resistor R6 is connected with an input temperature signal, the other end of the resistor R5 is connected with a power supply, the anode end of D2 is connected with the power supply through the resistor R4, and the anode end of D4 is used as a circuit output end; the anode terminals of D3 and D4 are connected together as the output of the overall protection signal OUT.
The invention has the beneficial effects that: the circuit can provide multiple paths of temperature protection circuits at the same time, each path can carry out over-temperature protection and output respective protection signals, and the output protection signals among the protection circuits are mutually isolated by hardware and cannot be interfered; meanwhile, the seedling tray has a multi-path display function, can simultaneously display the over-temperature conditions in different seedling trays, strongly supports the unattended seedling raising environment, and has better economic use.
Drawings
Fig. 1 is a water temperature monitoring protection circuit diagram of a multi-path seedling raising tray.
Detailed Description
FIG. 1 is a circuit diagram of a water temperature monitoring and protecting system of a multi-channel seedling raising tray, IN1IN2 is a detection signal of the water temperature IN a seedling tray 1-2 respectively; d1 is an over-temperature display diode in the seedling tray 1, D2 is an over-temperature display diode in the seedling tray 2, the anode end of D3 is over-temperature protection output of the seedling tray 1, the anode end of D4 is over-temperature protection output of the seedling tray 2, and the anode ends of D3 and D4 are connected together and used as output of a whole protection signal OUT;
the model of the triode Q1 is 9014, a collector is connected with one end of the R3, one end of the R2, the cathode end of the D1 and the cathode end of the D3; the other end of the R3 is connected with an input temperature signal, the other end of the R2 is connected with a power supply, the anode end of the D1 is connected with the power supply through the R1, and the anode end of the D3 is used as a circuit output end;
the model of the triode Q2 is 9014, a collector is connected with one end of the R5, one end of the R6, the cathode end of the D2 and the cathode end of the D4; the other end of the R6 is connected with an input temperature signal, the other end of the R5 is connected with a power supply, the anode end of the D2 is connected with the power supply through the R4, and the anode end of the D4 is used as a circuit output end;
the anode terminals of D3 and D4 are connected together to realize the function of hardware isolation and serve as the output of the whole protection signal OUT;
the working principle of the circuit is as follows:
when seedling tray 1 water temperature was too high, IN1 is the high level, and then drive triode Q1 action closure, triode collecting electrode and emitter switch on, make emitting diode D1 negative pole end present the low level, make D1 luminous, show overheat signal, and simultaneously, D3's negative pole end also presents the low level, because the conduction voltage drop of diode is very low, only about 0.7V, make D3's positive pole end also present the low level, and then protection output OUT end, present low level signal, be used for exporting and carry OUT excess temperature control for upper control unit such as singlechip, the protection of seedling tray water temperature has been realized.
Similar seedling trays 2 have the same working principle.
The anode terminals of D3 and D4 are connected together, so that the OUT terminal can be enabled to present a low level when any outgoing line of the seedling tray 1 or 2 is over-temperature; for example, when the seedling tray 1 is over-warm and the seedling tray 2 is not over-warm, the cathode of the diode D3 is at a low level, and further the anode of the diode D3 is pulled down to a low level, at this time, the cathode of the diode D4 is still at a high level due to the pull-up action of the resistor R5, however, due to the reverse isolation action of the diode D4, the high level at the cathode end of the diode D4 does not affect the low level state at the OUT end, and further mutual isolation of multiple protection signals is achieved without mutual influence.
Although fig. 1 shows 2 protection circuits, in practical applications, multiple protection circuits can be connected in parallel at the same time, so as to achieve the same function, and monitor water temperatures of more seedling trays.
The above embodiments are only for illustrating the technical idea and the application features of the present invention, and the purpose thereof is to enable the engineer skilled in the field to understand the spirit of the present invention and apply it, but not to limit the protection scope of the present invention. Any physical location at which it is actually used is within the scope of this patent. However, that no matter how detailed the foregoing appears in text, the invention can be practiced in many ways. The details of the control scheme described above may vary considerably in its implementation details, while still being encompassed by the invention disclosed herein. All equivalent changes and modifications made according to the spirit of the present invention should be covered within the protection scope of the present invention.
Claims (1)
1. A multi-channel seedling tray water temperature monitoring protection circuit is characterized IN that IN1 and IN2 are detection signals of water temperatures IN seedling trays 1-2 respectively; d1 is an over-temperature display diode in the seedling tray 1, D2 is an over-temperature display diode in the seedling tray 2, the anode end of a diode D3 is over-temperature protection output of the seedling tray 1, and the anode end of a diode D4 is over-temperature protection output of the seedling tray 2, and is characterized in that a collector of a triode Q1 is connected with one end of a resistor R3, one end of a resistor R2, the cathode end of the D1 and the cathode end of the D3; the other end of the resistor R3 is connected with an input temperature signal, the other end of the resistor R2 is connected with a power supply, the anode end of the D1 is connected with the power supply through the resistor R1, and the anode end of the D3 is used as a circuit output end; the collector of the triode Q2 is connected with one end of a resistor R5, one end of a resistor R6, the cathode end of the D2 and the cathode end of the D4; the other end of the resistor R6 is connected with an input temperature signal, the other end of the resistor R5 is connected with a power supply, the anode end of the D2 is connected with the power supply through the resistor R4, and the anode end of the D4 is used as a circuit output end; the D3 and D4 anode terminals are connected together as the output of the protection signal OUT.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011524022.XA CN112636302A (en) | 2020-12-22 | 2020-12-22 | Multi-path seedling raising tray water temperature monitoring protection circuit |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011524022.XA CN112636302A (en) | 2020-12-22 | 2020-12-22 | Multi-path seedling raising tray water temperature monitoring protection circuit |
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| Publication Number | Publication Date |
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| CN112636302A true CN112636302A (en) | 2021-04-09 |
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| CN202011524022.XA Pending CN112636302A (en) | 2020-12-22 | 2020-12-22 | Multi-path seedling raising tray water temperature monitoring protection circuit |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102377171A (en) * | 2011-09-17 | 2012-03-14 | 新安县电业公司 | Overtemperature warning device for storage battery and overtemperature warning method therefor |
| CN104037729A (en) * | 2014-06-17 | 2014-09-10 | 李忠文 | Multi-channel digital-display temperature control circuit breaker |
| CN104965536A (en) * | 2015-06-24 | 2015-10-07 | 上海沪工焊接集团股份有限公司 | Temperature control circuit and temperature control method |
| CN210780073U (en) * | 2019-09-02 | 2020-06-16 | 大连弘达电气股份有限公司 | Converter excess temperature protection circuit |
| CN214314528U (en) * | 2020-12-22 | 2021-09-28 | 洛阳市烟草公司汝阳县分公司 | Multi-path seedling raising tray water temperature monitoring protection circuit |
-
2020
- 2020-12-22 CN CN202011524022.XA patent/CN112636302A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102377171A (en) * | 2011-09-17 | 2012-03-14 | 新安县电业公司 | Overtemperature warning device for storage battery and overtemperature warning method therefor |
| CN104037729A (en) * | 2014-06-17 | 2014-09-10 | 李忠文 | Multi-channel digital-display temperature control circuit breaker |
| CN104965536A (en) * | 2015-06-24 | 2015-10-07 | 上海沪工焊接集团股份有限公司 | Temperature control circuit and temperature control method |
| CN210780073U (en) * | 2019-09-02 | 2020-06-16 | 大连弘达电气股份有限公司 | Converter excess temperature protection circuit |
| CN214314528U (en) * | 2020-12-22 | 2021-09-28 | 洛阳市烟草公司汝阳县分公司 | Multi-path seedling raising tray water temperature monitoring protection circuit |
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