CN215416419U - A constant temperature and humidity device for maize breeding - Google Patents
A constant temperature and humidity device for maize breeding Download PDFInfo
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- CN215416419U CN215416419U CN202121412045.1U CN202121412045U CN215416419U CN 215416419 U CN215416419 U CN 215416419U CN 202121412045 U CN202121412045 U CN 202121412045U CN 215416419 U CN215416419 U CN 215416419U
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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
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A40/00—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production
- Y02A40/10—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production in agriculture
- Y02A40/25—Greenhouse technology, e.g. cooling systems therefor
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Abstract
The utility model discloses a constant temperature and humidity device for corn breeding, which comprises a temperature and humidity sensor, a microprocessor and a temperature and humidity regulator, wherein detection signals of the temperature and humidity sensor are processed by a signal conditioning unit and then are sent into the microprocessor, the signal conditioning unit comprises an amplifying trap circuit, a depth regulating circuit and a stable amplitude conversion circuit, the amplifying trap circuit performs phase regulation on signal amplification by using operational amplifier resistance-capacitance compensation to avoid signal amplification imbalance, an RLC trap is adopted to carry out trap processing on the detection signals in an operational amplifier driving mode, thereby effectively eliminating external environment noise frequency interference and greatly improving signal acquisition precision, the depth regulating circuit is adopted to carry out feedback regulation on trap depth of the amplifying trap circuit to ensure accurate output of the detection signals, the processing precision of the temperature and humidity acquisition signals is high, the stability is good, and the accuracy of temperature and humidity detection in a culture box is effectively improved, thereby improving the constant temperature and humidity environment of corn breeding.
Description
Technical Field
The utility model relates to the technical field of organic fertilizer production equipment, in particular to a constant temperature and humidity device for corn breeding.
Background
Corn is widely distributed in China, mainly in northeast, north China and southwest. With the increasing requirements of social development on the yield and quality of corn, the increase of the yield of corn is basically realized by cultivating excellent varieties through experiments, so that breeding is indispensable. The existing corn breeding operation gradually tends to be automatic and intelligent, the constant-temperature and constant-humidity environment of corn breeding is realized through the incubator, however, in the actual use process, because the temperature and humidity sensor is greatly influenced by environmental interference factors, the precision and the stability of the signal acquisition process cannot meet the requirements, and the actual environmental parameters in the incubator have deviation.
The present invention provides a new solution to this problem.
SUMMERY OF THE UTILITY MODEL
In view of the above situation, the present invention aims to overcome the defects of the prior art and provide a constant temperature and humidity device for corn breeding.
The technical scheme for solving the problem is as follows: a constant temperature and humidity device for maize breeding, including temperature and humidity sensor, microprocessor and temperature and humidity regulator, temperature and humidity sensor's detected signal sends into after signal conditioning unit handles in the microprocessor, signal conditioning unit is including amplifying trap circuit, degree of depth regulating circuit and steady amplitude conversion circuit, amplifying trap circuit's input is connected temperature and humidity sensor's signal output part, amplifying trap circuit's output is connected degree of depth regulating circuit and steady amplitude conversion circuit's input, degree of depth regulating circuit is used for right amplifying trap circuit's trap depth carries out feedback control, steady amplitude conversion circuit's output passes through the AD converter and connects microprocessor.
Preferably, the amplification trap circuit includes an operational amplifier AR1, an inverting input terminal of the operational amplifier AR1 is connected to a signal output terminal of the temperature and humidity sensor through a resistor R1, a non-inverting input terminal of the operational amplifier AR1 is grounded through a resistor R2 and a capacitor C1 which are connected in parallel, an output terminal of the operational amplifier AR1 is connected to one ends of resistors R3 and R4, and is connected to input terminals of the depth adjusting circuit and the amplitude stabilizing conversion circuit through an RLC wave trap, the other end of the resistor R4 is connected to one end of the capacitor C2, and the other ends of the resistor R3 and the capacitor C2 are connected to an inverting input terminal of the operational amplifier AR 1.
Preferably, the RLC wave trap comprises resistors R6 and R7, an inductor L1 and a capacitor C3, one end of the resistor R6 and one end of the inductor L1 are connected to the output end of the operational amplifier AR1, the other end of the resistor R6 is connected to one end of the capacitor C3, and the other ends of the inductor L1 and the capacitor C3 are grounded through a resistor R7.
Preferably, the depth adjusting circuit comprises a triode VT1, an emitter of the triode VT1 is connected to one end of a resistor R8 and the other end of an inductor L1, a base of the triode VT1 is connected to the other end of a resistor R8, a collector of the triode VT1 is connected to a non-inverting input terminal of an operational amplifier AR2 and is grounded through a capacitor C4, an inverting input terminal of the operational amplifier AR2 is connected to an output terminal of the operational amplifier AR2 and one end of the resistor R5 through a capacitor C5, and the other end of the resistor R5 is connected to an inverting input terminal of the operational amplifier AR 1.
Preferably, the amplitude stabilizing conversion circuit comprises a MOS transistor Q1, a drain of the MOS transistor Q1 is connected to one end of a resistor R9 and the other end of an inductor L1, a gate of the MOS transistor Q1 is connected to the other end of a resistor R9 and a cathode of a zener diode DZ1, an anode of the zener diode DZ1 is grounded, and a source of the MOS transistor Q1 is grounded through a resistor R10 and connected to the microprocessor through an a/D converter.
Preferably, the temperature and humidity regulator comprises a dryer and a humidifier.
Through the technical scheme, the utility model has the beneficial effects that:
1. the amplifying trap circuit utilizes operational amplifier resistance-capacitance compensation to carry out phase adjustment on signal amplification, avoids signal amplification imbalance, and adopts the RLC trap filter to carry out trap processing on detection signals in the operational driving mode, so that external environment noise frequency interference is effectively eliminated, and the signal acquisition precision is greatly improved.
2. Adopt degree of depth regulating circuit to carry out feedback control to the trapped wave degree of depth of enlargiing the trapped wave circuit to carry out degree of depth compensation to the trapped wave link, effectively promote the frequency characteristic that the trapped wave was handled, guarantee the accurate output of detected signal.
3. The utility model has high processing precision and good stability for the temperature and humidity acquisition signals, effectively improves the accuracy of temperature and humidity detection in the incubator, and further improves the constant temperature and humidity environment of corn breeding.
Drawings
Fig. 1 is a schematic circuit diagram of a signal conditioning unit of the present invention.
Detailed Description
The foregoing and other technical and scientific aspects, features and utilities of the present invention will be apparent from the following detailed description of the embodiments, which is to be read in connection with the accompanying drawings of fig. 1. The structural contents mentioned in the following embodiments are all referred to the attached drawings of the specification.
Exemplary embodiments of the present invention will be described below with reference to the accompanying drawings.
A constant temperature and humidity device for maize breeding, including temperature and humidity sensor, microprocessor and temperature and humidity regulator, during specific setting, temperature and humidity regulator includes desicator and humidifier.
As shown in fig. 1, the detection signal of the temperature and humidity sensor is sent into the microprocessor after being processed by the signal conditioning unit, the signal conditioning unit comprises an amplifying trap circuit, a depth adjusting circuit and a fixed amplitude conversion circuit, the input end of the amplifying trap circuit is connected with the signal output end of the temperature and humidity sensor, the output end of the amplifying trap circuit is connected with the input ends of the depth adjusting circuit and the fixed amplitude conversion circuit, the depth adjusting circuit is used for performing feedback adjustment on the trap depth of the amplifying trap circuit, and the output end of the fixed amplitude conversion circuit is connected with the microprocessor through an a/D converter.
The amplifying trap circuit comprises an operational amplifier AR1, the inverting input end of the operational amplifier AR1 is connected with the signal output end of the temperature and humidity sensor through a resistor R1, the non-inverting input end of the operational amplifier AR1 is grounded through a resistor R2 and a capacitor C1 which are connected in parallel, the output end of the operational amplifier AR1 is connected with one ends of a resistor R3 and a resistor R4 and is connected with the input ends of the depth adjusting circuit and the amplitude stabilizing conversion circuit through an RLC wave trap, the other end of the resistor R4 is connected with one end of the capacitor C2, and the other ends of the resistor R3 and the capacitor C2 are connected with the inverting input end of the operational amplifier AR 1.
The RLC wave trap comprises resistors R6 and R7, an inductor L1 and a capacitor C3, one ends of the resistor R6 and the inductor L1 are connected with the output end of the operational amplifier AR1, the other end of the resistor R6 is connected with one end of the capacitor C3, and the other ends of the inductor L1 and the capacitor C3 are grounded through a resistor R7.
The depth adjusting circuit comprises a triode VT1, wherein an emitter of a triode VT1 is connected with one end of a resistor R8 and the other end of an inductor L1, a base of the triode VT1 is connected with the other end of a resistor R8, a collector of a triode VT1 is connected with a non-inverting input end of an operational amplifier AR2 and is grounded through a capacitor C4, an inverting input end of an operational amplifier AR2 is connected with an output end of an operational amplifier AR2 and one end of a resistor R5 through a capacitor C5, and the other end of a resistor R5 is connected with an inverting input end of an operational amplifier AR 1.
The amplitude stabilizing conversion circuit comprises a MOS tube Q1, wherein the drain electrode of the MOS tube Q1 is connected with one end of a resistor R9 and the other end of an inductor L1, the grid electrode of the MOS tube Q1 is connected with the other end of a resistor R9 and the cathode of a voltage stabilizing diode DZ1, the anode of the voltage stabilizing diode DZ1 is grounded, and the source electrode of the MOS tube Q1 is grounded through a resistor R10 and is connected with the microprocessor through an A/D converter.
When the temperature and humidity sensor is used specifically, the temperature and humidity sensor is used for collecting temperature and humidity parameters in the incubator, converting the temperature and humidity parameters into electric signals and outputting the electric signals to the signal conditioning unit for processing, and the specific principle is as follows: firstly, an operational amplifier AR1 in the amplifying trap circuit amplifies the collected signals of the temperature and humidity sensor, and resistors R2, R3 and a capacitor C2 form resistance-capacitance compensation at the negative feedback end of the resistor and the capacitor to perform phase adjustment on the signal amplification, so that the signal amplification is prevented from being disordered. The capacitor C1 eliminates the thermal noise on the loop of the resistor R2 at the in-phase input end of the operational amplifier AR1, thereby improving the working accuracy of the operational amplifier and ensuring the accuracy of the operational amplification result. The RLC wave trap carries out wave trapping processing on the detection signal in a driving mode of the operational amplifier AR1, so that external environment noise frequency interference is effectively eliminated, and signal acquisition precision is greatly improved.
Meanwhile, in order to improve the trap Q value, a depth adjusting circuit is adopted to perform feedback adjustment on the trap depth of the amplifying trap circuit. Wherein, triode VT1 samples the amplification to RLC trapper's output signal, send into fortune after electric capacity C4 is stable and put in AR2, fortune puts ware AR2 and utilizes the voltage follower principle to keep apart the amplification to sampling signal, and utilize electric capacity C5 to buffer compensation to the signal, thereby promote signal output's stability, and the signal feedback after will amplifying is to fortune ware AR 1's inverting input end, thereby carry out depth compensation to the trapped wave link, effectively promote the frequency characteristic of trapped wave processing, guarantee the accurate output of detected signal.
The amplitude stabilizing conversion circuit adopts an MOS tube Q1 to amplify signals processed by a preceding stage circuit, and utilizes a voltage stabilizing diode DZ1 to boost reference voltage to a grid electrode of an MOS tube Q1, so that the amplitude of an output signal of the MOS tube Q1 is ensured to be stable, the stability of a detection signal in A/D conversion is ensured, and finally the detection signal is converted into digital quantity by an A/D converter and then is sent into a microprocessor.
The microprocessor calculates real-time temperature and humidity in the incubator after carrying out internal processing on the acquired data, and realizes temperature and humidity regulation in the incubator by controlling the operation of the temperature and humidity regulator, so that the temperature and humidity in the incubator are always maintained within a standard set range value. The utility model has high processing precision and good stability for the temperature and humidity acquisition signals, effectively improves the accuracy of temperature and humidity detection in the incubator, and further improves the constant temperature and humidity environment of corn breeding.
While the utility model has been described in further detail with reference to specific embodiments thereof, it is not intended that the utility model be limited to the specific embodiments thereof; for those skilled in the art to which the present invention pertains and related technologies, the extension, operation method and data replacement should fall within the protection scope of the present invention based on the technical solution of the present invention.
Claims (6)
1. A constant temperature and humidity device for maize breeding, including temperature and humidity sensor, microprocessor and temperature and humidity regulator, its characterized in that: the temperature and humidity sensor's detected signal is sent into after signal conditioning unit handles in the microprocessor, signal conditioning unit is including enlargiing trap circuit, degree of depth regulating circuit and steady amplitude conversion circuit, enlargies trap circuit's input and connects temperature and humidity sensor's signal output part, enlarge trap circuit's output and connect degree of depth regulating circuit and steady amplitude conversion circuit's input, degree of depth regulating circuit is used for right enlarge trap circuit's trapped wave degree of depth and carry out feedback control, steady amplitude conversion circuit's output passes through the AD converter and connects microprocessor.
2. The constant temperature and humidity device for corn breeding according to claim 1, characterized in that: the amplifying trap circuit comprises an operational amplifier AR1, the inverting input end of the operational amplifier AR1 is connected with the signal output end of the temperature and humidity sensor through a resistor R1, the non-inverting input end of the operational amplifier AR1 is grounded through a resistor R2 and a capacitor C1 which are connected in parallel, the output end of the operational amplifier AR1 is connected with one ends of a resistor R3 and a resistor R4 and is connected with the input ends of the depth adjusting circuit and the amplitude stabilizing conversion circuit through an RLC wave trap, the other end of the resistor R4 is connected with one end of the capacitor C2, and the other ends of the resistor R3 and the capacitor C2 are connected with the inverting input end of the operational amplifier AR 1.
3. The constant temperature and humidity device for corn breeding according to claim 2, characterized in that: the RLC wave trap comprises resistors R6 and R7, an inductor L1 and a capacitor C3, one ends of the resistor R6 and the inductor L1 are connected with the output end of an operational amplifier AR1, the other end of the resistor R6 is connected with one end of the capacitor C3, and the other ends of the inductor L1 and the capacitor C3 are grounded through a resistor R7.
4. The constant temperature and humidity device for corn breeding according to claim 3, characterized in that: the depth adjusting circuit comprises a triode VT1, wherein an emitter of a triode VT1 is connected with one end of a resistor R8 and the other end of an inductor L1, a base of the triode VT1 is connected with the other end of a resistor R8, a collector of a triode VT1 is connected with a non-inverting input end of an operational amplifier AR2 and is grounded through a capacitor C4, an inverting input end of an operational amplifier AR2 is connected with an output end of an operational amplifier AR2 and one end of a resistor R5 through a capacitor C5, and the other end of a resistor R5 is connected with an inverting input end of an operational amplifier AR 1.
5. The constant temperature and humidity device for corn breeding according to claim 4, characterized in that: the amplitude stabilizing conversion circuit comprises a MOS tube Q1, wherein the drain electrode of the MOS tube Q1 is connected with one end of a resistor R9 and the other end of an inductor L1, the grid electrode of the MOS tube Q1 is connected with the other end of a resistor R9 and the cathode of a voltage stabilizing diode DZ1, the anode of the voltage stabilizing diode DZ1 is grounded, and the source electrode of the MOS tube Q1 is grounded through a resistor R10 and is connected with the microprocessor through an A/D converter.
6. The constant temperature and humidity device for corn breeding according to claim 1, characterized in that: the temperature and humidity regulator comprises a dryer and a humidifier.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121412045.1U CN215416419U (en) | 2021-06-24 | 2021-06-24 | A constant temperature and humidity device for maize breeding |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121412045.1U CN215416419U (en) | 2021-06-24 | 2021-06-24 | A constant temperature and humidity device for maize breeding |
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| Publication Number | Publication Date |
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| CN215416419U true CN215416419U (en) | 2022-01-04 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202121412045.1U Active CN215416419U (en) | 2021-06-24 | 2021-06-24 | A constant temperature and humidity device for maize breeding |
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| CN (1) | CN215416419U (en) |
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2021
- 2021-06-24 CN CN202121412045.1U patent/CN215416419U/en active Active
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