CN107390749A - A kind of breeding environment temperature control system - Google Patents
A kind of breeding environment temperature control system Download PDFInfo
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- CN107390749A CN107390749A CN201610838744.XA CN201610838744A CN107390749A CN 107390749 A CN107390749 A CN 107390749A CN 201610838744 A CN201610838744 A CN 201610838744A CN 107390749 A CN107390749 A CN 107390749A
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- module
- control system
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- radio receiving
- receiving transmitting
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
- G05D27/00—Simultaneous control of variables covered by two or more of main groups G05D1/00 - G05D25/00
- G05D27/02—Simultaneous control of variables covered by two or more of main groups G05D1/00 - G05D25/00 characterised by the use of electric means
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- Automation & Control Theory (AREA)
- Air Conditioning Control Device (AREA)
Abstract
The invention discloses a kind of breeding environment temperature control system, including detecting system and control system, the detecting system includes Temperature Humidity Sensor, signal conditioning circuit, A/D modular converters, controller, antenna and radio receiving transmitting module, and the control system includes control core, level switch module, FPGA module, drive module A, antenna A and radio receiving transmitting module A；In the detecting system, Temperature Humidity Sensor is sequentially connected signal conditioning circuit, A/D modular converters, controller, radio receiving transmitting module and antenna；In the control system, antenna A is sequentially connected radio receiving transmitting module A, control core, level switch module, A/D modular converters A and FPGA module.Breeding environment temperature control system of the present invention is independent by detecting system and control system, and stability is high, and applied widely, effect is good, is adapted to promote the use of.
Description
Technical field
The present invention relates to a kind of control system, specifically a kind of breeding environment temperature control system.
Background technology
As rural economy is fast-developing, Virtual production, intensive management and enterprise-style management have become new rural village
The new feature of construction.Many rural science and technology model households, specialist have gone on road of getting wealth by science and technology, into rural poverty
The leader to get rich.Peasant's subject skill, with science and technology enthusiasm it is unprecedentedly surging, get rich by science and technology and have become one kind of Chinese countryside
Fashion.
Many peasants take to cultivation cause now, and must carry out strict control in the place cultivated to humiture
System, the healthy growth of all kinds of agricultural product is just can guarantee that, existing breeding environment temperature control system is mostly using detection and control
The design of one, stability is low, and the scope of application is small.
In general detecting and controlling system is required for using level switch module, and its effect is when input signal changes greatly
When, the power output of power amplifier is held essentially constant, specifically, i.e., when input signals are small, auto level control
Loop does not work, and after input signal is become greater to a certain degree, auto level control loop starts to act on, and according to input
The size dynamic of signal adjusts the gain of power amplifier, power output is kept constant.Existing many auto level controls
Loop is all controlled using DSP or single-chip microcomputer, and cost is higher, and due to needing to be programmed design, the construction cycle compared with
It is long.
The content of the invention
It is an object of the invention to provide a kind of breeding environment temperature control system, to solve to propose in above-mentioned background technology
The problem of.
To achieve the above object, the present invention provides following technical scheme：
A kind of breeding environment temperature control system, including detecting system and control system, the detecting system pass including humiture
Sensor, signal conditioning circuit, A/D modular converters, controller, antenna and radio receiving transmitting module, the control system include control
Core, level switch module, FPGA module, drive module A, antenna A and radio receiving transmitting module A；It is warm and humid in the detecting system
Degree sensor is sequentially connected signal conditioning circuit, A/D modular converters, controller, radio receiving transmitting module and antenna；The control system
In system, antenna A is sequentially connected radio receiving transmitting module A, control core, level switch module, A/D modular converters A and FPGA module,
FPGA module is also respectively connected with drive module A, drive module B and drive module C, and drive module A is also connected with heating plate, drives mould
Block B is also connected with humidifier, and drive module C is also connected with semiconductor refrigerating module, and the controller and control core use
PIC16F877。
As the further scheme of the present invention：Radio receiving transmitting module and the radio receiving transmitting module A uses NRF24E1.
As the further scheme of the present invention：The level switch module includes voltage-controlled attenuator, filter circuit, power and put
Big device, amplifier difference channel, detecting circuit, termination power and reference voltage source circuit, the voltage-controlled attenuator connects defeated respectively
Enter signal Vi, filter circuit and power amplifier, power amplifier is also connected with termination power, and termination power is also respectively connected with detection
Circuit and output end vo, detecting circuit are also connected with amplifier difference channel, and it is another that amplifier difference channel is also respectively connected with filter circuit
End and reference voltage source circuit.
As the further scheme of the present invention：The voltage-controlled attenuator uses attenuator HMC346.
As further scheme of the invention：The detecting circuit carries out detection by the way of coupled microstrip line.
Compared with prior art, the beneficial effects of the invention are as follows：Breeding environment temperature control system of the present invention will detect
System and control system are independent, and stability is high, and the level switch module designed in addition, its input signal Vi initially enters voltage-controlled
Attenuator, signal is amplified subsequently into power amplifier, the termination power of power amplifier output is coupled out signal
F, detecting circuit produce a detecting circuit according to the signal f that is coupled out, and the voltage of detecting circuit and reference voltage source circuit enters
Row differential amplification exports preliminary feedback control voltage, feedback control voltage-controlled attenuator after filtered circuit, complete so as to be formed
Feedback loop, finally make power output keep it is constant, do not reduced using programmable controllers such as single-chip microcomputer or DSP
Construction cycle and difficulty, cost is low, and the market competitiveness is strong, applied widely, and effect is good, is adapted to promote the use of.
Brief description of the drawings
Fig. 1 is the detecting system structure principle chart of breeding environment temperature control system；
Fig. 2 is the Control system architecture schematic diagram of breeding environment temperature control system；
Fig. 3 is the theory diagram of level switch module in breeding environment temperature control system.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Site preparation describes, it is clear that described embodiment is only part of the embodiment of the present invention, rather than whole embodiments.It is based on
Embodiment in the present invention, those of ordinary skill in the art are obtained every other under the premise of creative work is not made
Embodiment, belong to the scope of protection of the invention.
Refer to Fig. 1~3, in the embodiment of the present invention, a kind of breeding environment temperature control system, including detecting system and control
System processed, the detecting system include Temperature Humidity Sensor, signal conditioning circuit, A/D modular converters, controller, antenna and nothing
Line transceiver module, the control system include control core, level switch module, FPGA module, drive module A, antenna A and nothing
Line transceiver module A；In the detecting system, Temperature Humidity Sensor is sequentially connected signal conditioning circuit, A/D modular converters, control
Device, radio receiving transmitting module and antenna；In the control system, antenna A is sequentially connected radio receiving transmitting module A, control core, level
Modular converter, A/D modular converters A and FPGA module, FPGA module are also respectively connected with drive module A, drive module B and driving mould
Block C, drive module A are also connected with heating plate, and drive module B is also connected with humidifier, and drive module C is also connected with semiconductor refrigerating mould
Block, the controller and control core use PIC16F877；Radio receiving transmitting module and the radio receiving transmitting module A is used
NRF24E1；The level switch module includes voltage-controlled attenuator, filter circuit, power amplifier, amplifier difference channel, detection
Circuit, termination power and reference voltage source circuit, the voltage-controlled attenuator connect input signal Vi, filter circuit and power respectively
Amplifier, power amplifier are also connected with termination power, and termination power is also respectively connected with detecting circuit and output end vo, detecting circuit
Amplifier difference channel is also connected with, amplifier difference channel is also respectively connected with the filter circuit other end and reference voltage source circuit；It is described
Voltage-controlled attenuator uses attenuator HMC346；The detecting circuit carries out detection by the way of coupled microstrip line.
The present invention operation principle be：Control system of the present invention includes detecting system and control system, the detecting system
Including Temperature Humidity Sensor, signal conditioning circuit, A/D modular converters, controller, antenna and radio receiving transmitting module, the control
System includes control core, level switch module, FPGA module, drive module A, antenna A and radio receiving transmitting module A；The inspection
In examining system, Temperature Humidity Sensor is sequentially connected signal conditioning circuit, A/D modular converters, controller, radio receiving transmitting module and day
Line；In the control system, antenna A is sequentially connected radio receiving transmitting module A, control core, level switch module, A/D moduluss of conversion
Block A and FPGA module, FPGA module are also respectively connected with drive module A, drive module B and drive module C, and drive module A also connects
Heating plate is connect, drive module B is also connected with humidifier, and drive module C is also connected with semiconductor refrigerating module, the controller and control
Core uses PIC16F877；Radio receiving transmitting module and the radio receiving transmitting module A uses NRF24E1；The level conversion
Module includes voltage-controlled attenuator, filter circuit, power amplifier, amplifier difference channel, detecting circuit, termination power and benchmark electricity
Source circuit, the voltage-controlled attenuator connect input signal Vi, filter circuit and power amplifier respectively, and power amplifier also connects
Termination power is connect, termination power is also respectively connected with detecting circuit and output end vo, and detecting circuit is also connected with amplifier difference channel, fortune
Put difference channel and be also respectively connected with the filter circuit other end and reference voltage source circuit；The voltage-controlled attenuator uses attenuator
HMC346；The detecting circuit carries out detection by the way of coupled microstrip line.
Referring to Fig. 1, Temperature Humidity Sensor output is that signal is the linear signals such as electric current, voltage, pass through front end signal
Modulate circuit and A/D modular converters digitize to realize, then input controller comes computing, the control that will be drawn after controller computing
Signal processed is sent to control system by radio receiving transmitting module, after the radio receiving transmitting module A of control system receives control signal, send
Enter control core calculating, and the signal of calculating is sent into FPGA module, passes through FPGA moulds after level conversion and A/D conversions
Block control drive module A ~ C controls heating plate, humidifier and semiconductor refrigerating module.
Referring to Fig. 3, input signal Vi initially enters voltage-controlled attenuator, signal is put subsequently into power amplifier
Greatly, the termination power of power amplifier output is coupled out signal f, and detecting circuit produces an inspection according to the signal f being coupled out
The voltage of wave voltage, detecting circuit and reference voltage source circuit carries out differential amplification and exports preliminary feedback control voltage, through filter
Feedback control voltage-controlled attenuator after wave circuit, so as to form complete feedback loop, power output is finally set to keep constant.Such as
Power amplifier due to the signal increase that when temperature or other reasonses gain rise, power output become big, termination power is coupled out,
Increase detecting circuit, the voltage of detecting circuit and reference voltage source circuit produces the voltage-controlled decay of control after amplifier differential amplification
The voltage of device, the voltage make the increase of voltage-controlled attenuator attenuation, so that whole power amplifier gain reduces, power amplifier
Output reduces, and forms dynamic equilibrium, amplifier output power is tended to be constant；Conversely, such as power amplifier due to temperature or
Other reasonses gain reduction, power output become hour, and the signal that termination power is coupled out reduces so that detecting circuit reduces, inspection
Wave voltage produces the voltage of control voltage-controlled attenuator with reference voltage source voltage after amplifier differential amplification, and the voltage makes voltage-controlled
Attenuator attenuation reduces, and also raises whole power amplifier gain, so that power amplifier output increase, is ultimately formed
Dynamic equilibrium, amplifier output is set to tend to be constant.
It is obvious to a person skilled in the art that the invention is not restricted to the details of above-mentioned one exemplary embodiment, Er Qie
In the case of without departing substantially from spirit or essential attributes of the invention, the present invention can be realized in other specific forms.Therefore, no matter
From the point of view of which point, embodiment all should be regarded as exemplary, and be nonrestrictive, the scope of the present invention is by appended power
Profit requires rather than described above limits, it is intended that all in the implication and scope of the equivalency of claim by falling
Change is included in the present invention.Any reference in claim should not be considered as to the involved claim of limitation.
Moreover, it will be appreciated that although the present specification is described in terms of embodiments, not each embodiment is only wrapped
Containing an independent technical scheme, this narrating mode of specification is only that those skilled in the art should for clarity
Using specification as an entirety, the technical solutions in the various embodiments may also be suitably combined, forms those skilled in the art
It is appreciated that other embodiment.
Claims (5)
1. a kind of breeding environment temperature control system, including detecting system and control system, it is characterised in that the detecting system
Including Temperature Humidity Sensor, signal conditioning circuit, A/D modular converters, controller, antenna and radio receiving transmitting module, the control
System includes control core, level switch module, FPGA module, drive module A, antenna A and radio receiving transmitting module A；The inspection
In examining system, Temperature Humidity Sensor is sequentially connected signal conditioning circuit, A/D modular converters, controller, radio receiving transmitting module and day
Line；In the control system, antenna A is sequentially connected radio receiving transmitting module A, control core, level switch module, A/D moduluss of conversion
Block A and FPGA module, FPGA module are also respectively connected with drive module A, drive module B and drive module C, and drive module A also connects
Heating plate is connect, drive module B is also connected with humidifier, and drive module C is also connected with semiconductor refrigerating module, the controller and control
Core uses PIC16F877.
2. breeding environment temperature control system according to claim 1, it is characterised in that the radio receiving transmitting module and nothing
Line transceiver module A uses NRF24E1.
3. breeding environment temperature control system according to claim 1, it is characterised in that the level switch module includes
Voltage-controlled attenuator, filter circuit, power amplifier, amplifier difference channel, detecting circuit, termination power and reference voltage source electricity
Road, the voltage-controlled attenuator connect input signal Vi, filter circuit and power amplifier respectively, and power amplifier is also connected with coupling
Circuit, termination power are also respectively connected with detecting circuit and output end vo, and detecting circuit is also connected with amplifier difference channel, amplifier difference
Circuit is also respectively connected with the filter circuit other end and reference voltage source circuit.
4. breeding environment temperature control system according to claim 3, it is characterised in that the voltage-controlled attenuator, which uses, to decline
Subtract device HMC346.
5. breeding environment temperature control system according to claim 3, it is characterised in that the detecting circuit is using coupling
The mode of microstrip line carries out detection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610838744.XA CN107390749A (en) | 2016-09-22 | 2016-09-22 | A kind of breeding environment temperature control system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610838744.XA CN107390749A (en) | 2016-09-22 | 2016-09-22 | A kind of breeding environment temperature control system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107390749A true CN107390749A (en) | 2017-11-24 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610838744.XA Pending CN107390749A (en) | 2016-09-22 | 2016-09-22 | A kind of breeding environment temperature control system |
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| Country | Link |
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| CN (1) | CN107390749A (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203250228U (en) * | 2013-03-21 | 2013-10-23 | 石家庄联动通信科技有限公司 | Shed breeding control system |
| CN105259962A (en) * | 2015-11-13 | 2016-01-20 | 宿迁淮海科技服务有限公司 | Temperature and humidity control system for breeding pigs |
| CN205563349U (en) * | 2016-04-21 | 2016-09-07 | 象山杰尔德智能科技有限公司 | Automatic level control loop |
-
2016
- 2016-09-22 CN CN201610838744.XA patent/CN107390749A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203250228U (en) * | 2013-03-21 | 2013-10-23 | 石家庄联动通信科技有限公司 | Shed breeding control system |
| CN105259962A (en) * | 2015-11-13 | 2016-01-20 | 宿迁淮海科技服务有限公司 | Temperature and humidity control system for breeding pigs |
| CN205563349U (en) * | 2016-04-21 | 2016-09-07 | 象山杰尔德智能科技有限公司 | Automatic level control loop |
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Application publication date: 20171124 |
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