CN106873669B - A kind of lighting device for greenhouse - Google Patents
A kind of lighting device for greenhouse Download PDFInfo
- Publication number
- CN106873669B CN106873669B CN201710093337.5A CN201710093337A CN106873669B CN 106873669 B CN106873669 B CN 106873669B CN 201710093337 A CN201710093337 A CN 201710093337A CN 106873669 B CN106873669 B CN 106873669B
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- China
- Prior art keywords
- voltage
- module
- temperature
- controlled
- load end
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- 238000005070 sampling Methods 0.000 claims abstract description 38
- 238000005286 illumination Methods 0.000 claims abstract description 14
- 238000006243 chemical reaction Methods 0.000 claims abstract description 13
- 238000000034 method Methods 0.000 claims abstract description 8
- 230000000087 stabilizing effect Effects 0.000 claims abstract description 4
- 230000005611 electricity Effects 0.000 claims description 6
- 238000009529 body temperature measurement Methods 0.000 claims description 5
- 230000004048 modification Effects 0.000 claims description 3
- 238000012986 modification Methods 0.000 claims description 3
- 230000006641 stabilisation Effects 0.000 claims 1
- 238000011105 stabilization Methods 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 6
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000003321 amplification Effects 0.000 description 1
- HPDFFVBPXCTEDN-UHFFFAOYSA-N copper manganese Chemical compound [Mn].[Cu] HPDFFVBPXCTEDN-UHFFFAOYSA-N 0.000 description 1
- 239000008358 core component Substances 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000003199 nucleic acid amplification method Methods 0.000 description 1
Classifications
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
- G05D23/00—Control of temperature
- G05D23/19—Control of temperature characterised by the use of electric means
- G05D23/20—Control of temperature characterised by the use of electric means with sensing elements having variation of electric or magnetic properties with change of temperature
- G05D23/24—Control of temperature characterised by the use of electric means with sensing elements having variation of electric or magnetic properties with change of temperature the sensing element having a resistance varying with temperature, e.g. a thermistor
Abstract
The invention discloses a kind of lighting device for greenhouse, the lighting device includes voltage-controlled circuit environment module, Voltage to current transducer module, lighting load end, the voltage-controlled module of D/A, A/D sampling module and microprocessor；The voltage-controlled circuit environment module is connect with the Voltage to current transducer module, lighting load end respectively；The voltage-controlled circuit environment module generates pressure stabilizing output signal, and it is respectively sent to the lighting load end, to provide supply voltage required for illumination light-emitting, another way is sent to the Voltage to current transducer module, and the sampling resistor by controlling the Voltage to current transducer module realizes the conversion process of voltage and electric current；The A/D sampling module is connect with the Voltage to current transducer module, microprocessor respectively, the voltage signal of the sampling resistor for receiving the Voltage to current transducer module；The microprocessor and the A/D sampling module, the voltage-controlled module of D/A.
Description
Technical field
The present invention relates to field of circuit technology, in particular to a kind of lighting device for greenhouse.
Background technique
The it is proposed of national PPP strategy is that more stringent requirements are proposed for gardens environmental protection, for cultivating plant using various illumination
Greenhouse, need more energy efficient consideration.For current domestic greenhouse build situation from the point of view of, the lighting of degree of precision
Cultivate the problem of plant scheme disconnects there is temperature control and illuminance.
Summary of the invention
The present invention provides a kind of lighting device for greenhouse, solves above-mentioned technical problem, has reached and has proposed one kind simultaneously
Guarantee the technical effect of the lighting device of temperature control and illumination.
The present invention provides a kind of lighting device for greenhouse, and the lighting device includes voltage-controlled circuit environment module, electricity
Current voltage conversion module, lighting load end, the voltage-controlled module of D/A, A/D sampling module and microprocessor；
The voltage-controlled circuit environment module is connect with the Voltage to current transducer module, lighting load end respectively；The pressure
It controls circuit environment module and generates pressure stabilizing output signal, and be respectively sent to the lighting load end, to provide illumination light-emitting institute
The supply voltage needed, another way are sent to the Voltage to current transducer module, by controlling the Voltage to current transducer module
The conversion process of sampling resistor realization voltage and electric current；
The A/D sampling module is connect with the Voltage to current transducer module, microprocessor respectively, for receiving the electricity
The voltage signal of the sampling resistor of current voltage conversion module；
The microprocessor and the A/D sampling module, the voltage-controlled module of D/A adopt the voltage signal for controlling
Sample and storage, and the voltage-controlled module setting value of D/A is generated by sample voltage value to the voltage signal and preset value more afterwards,
The voltage-controlled module setting value of the D/A is sent by the voltage-controlled module of the D/A into voltage-controlled circuit environment module, with burning voltage electricity
Stream output.
Preferably, the lighting device further includes temperature control module, the temperature control module respectively with the microprocessor, illumination
Load end connection, the temperature in environment for controlling the lighting load end by the temperature control module, and temperature is controlled
As a result counter to send to the microprocessor.
Preferably, the sampling resistor of the Voltage to current transducer module and the lighting load end are connected in series, with detection
The curent change at the lighting load end.
Preferably, the Voltage to current transducer module further includes LM350 voltage regulator circuit, the LM350 voltage regulator circuit difference
It is connected in series with the lighting load end, sampling resistor.
Preferably, the temperature control module includes bridge temperature measurement module, and the bridge temperature measurement module includes that two resistance values are identical
Resistance R, a preset temperature value thermistor (temperature) sensor Ro and temperature-measuring thermistor Rk, the identical resistance of described two resistance values
R, a preset temperature value thermistor (temperature) sensor Ro and temperature-measuring thermistor Rk are sequentially connected in series forming circuit.
Preferably, as the preset temperature value thermistor (temperature) sensor Ro and temperature-measuring thermistor Rk equal, the D/A
The output of voltage-controlled module is 0.
Preferably, when the operating ambient temperature at the lighting load end reduces, changed by the output end of temperature control module
It is collected by microprocessor, by the voltage setting value in the modification voltage-controlled module of D/A, sends out the output voltage of the voltage-controlled module of D/A
Changing, the electric current flowed through according to stated clearly load end change, and load end illumination intensity becomes larger.
The application has the following beneficial effects:
The application generates constant voltage output by voltage-controlled circuit environment module, send to lighting load end, to provide hair
Supply voltage required for light, another way are sent to Voltage to current transducer, realize Voltage-current conversion process by sampling resistor；
The voltage that sampling resistor obtains is sent to A/D sampling module, and voltage signal is sampled and stored by microprocessor control, is led to
After crossing the comparison to sample voltage value and preset value, setting value is sent in voltage-controlled circuit environment by the way that D/A is voltage-controlled, to steady
Constant voltage electric current output, to solve the technical issues of guaranteeing the lighting device of high precision temperature control and illumination how simultaneously；
Further, by the way that temperature control module is arranged, the temperature control module connects with the microprocessor, lighting load end respectively
It connects, the temperature in environment for controlling the lighting load end by the temperature control module, and send temperature control result is counter
To the microprocessor, temperature controlled accuracy is improved.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, embodiment will be described below
Needed in attached drawing be briefly described, it should be apparent that, the accompanying drawings in the following description is only of the invention some
Embodiment.
Fig. 1 is a kind of schematic diagram of the lighting device for greenhouse of the application better embodiment；
Fig. 2 is the schematic diagram of voltage-controlled circuit environment module in the application Fig. 1；
Fig. 3 is the schematic diagram of potential circuit conversion in the application Fig. 1；
Fig. 4 is the schematic diagram at lighting load end in the application Fig. 1；
Fig. 5 is the schematic diagram of temperature control module in the application Fig. 1.
Specific embodiment
In order to better understand the above technical scheme, in conjunction with appended figures and specific embodiments to upper
Technical solution is stated to be described in detail.
Fig. 1 is a kind of schematic diagram of the lighting device for greenhouse of the application better embodiment, referring to Fig. 1, this Shen
A kind of lighting device for greenhouse is please also provided, the lighting device includes voltage-controlled circuit environment module, Voltage to current transducer
Module, lighting load end, the voltage-controlled module of D/A, A/D sampling module and microprocessor；
Fig. 3 and Fig. 4 are please referred to, the voltage-controlled circuit environment module is negative with the Voltage to current transducer module, illumination respectively
Carry end connection；The voltage-controlled circuit environment module generates pressure stabilizing output signal, and is respectively sent to the lighting load end, to
Supply voltage required for illumination light-emitting is provided, another way is sent to the Voltage to current transducer module, by controlling the voltage
The sampling resistor of current conversion module realizes the conversion process of voltage and electric current；The A/D sampling module respectively with the voltage
Current conversion module, microprocessor connection, the voltage signal of the sampling resistor for receiving the Voltage to current transducer module；Institute
Microprocessor and the A/D sampling module, the voltage-controlled module of D/A are stated, for controlling sampling and storage to the voltage signal, and
The voltage-controlled module setting value of D/A is generated more afterwards by sample voltage value to the voltage signal and preset value, and the D/A is pressed
Control module setting value is sent by the voltage-controlled module of the D/A into voltage-controlled circuit environment module, with the output of burning voltage electric current.It is described
The particular circuit configurations of voltage-controlled circuit environment module please refer to Fig. 2.
U1 (LM350A) is adjuster in Fig. 2, is the core component of circuit.Load the sampled electricity of (lighting load end) electric current
R5 is hindered, faint sampled voltage is generated, by the same Xiang Fang great of ultra-low noise operational amplifier U2.The voltage signal of amplification be sent to by
The negative terminal of the difference amplifier of U3 composition.Difference of the difference amplifier the microprocessor of negative terminal sampled voltage and anode setting voltage
Value amplifies, and is output to the adjustment end of adjuster, forms closed loop feedback.If there is certain situation to increase load current, then adopt
The ohmically voltage of sample increases, and in-phase amplifier U2 output voltage is made to become larger, and difference amplifier output voltage reduces, adjuster tune
Whole end voltage reduces, and adjuster output voltage is lower, and load current is made to be decreased to maintain the dynamic stability of load current,
Vice versa.As can be seen, the anode microprocessor setting value of difference amplifier determines the size of load current.If U3 anode
Voltage increases, i.e., microprocessor setting value increases, then adjuster adjustment end voltage increases, and adjuster output voltage increases, load
Electric current increases, and in-phase amplifier output increases, and difference amplifier negative terminal voltage increases, until U3 positive and negative terminal voltage is equal, system
Dynamic stability again.
Sampling resistor is connected in load circuit, and thus detection load current variation.Therefore, the stability of sampling resistor
The performance of constant-current source will be directly influenced, and sampling resistor should also have sufficiently large power, otherwise also will affect the property of constant-current source
It can even burn out.Precision resistance made of high-power copper-manganese material is selected in actual circuit.Sampling amplifier U2 selects ultralow
Noise amplifier AD797.Because it is in the first order of closed loop feedback, the influence of noise is minimized.Difference amplifier
U3 selects high-operational amplifier OP07, provides high-precision comparison result.D4, which is that lead is longer in order to prevent, to be made to occur instead in route
Circuit is damaged to induced voltage.In addition D4 can make reverse induction voltage constitute closed circuit by D4, to protect circuit.
Preferably, referring to Fig. 5, the lighting device further includes temperature control module, the temperature control module respectively with it is described micro-
Processor, the connection of lighting load end, the temperature in environment for controlling the lighting load end by the temperature control module, and
It send temperature control result is counter to the microprocessor.The temperature control module includes bridge temperature measurement module, the bridge thermometric mould
Block includes the identical resistance R of two resistance values, a preset temperature value thermistor (temperature) sensor Ro and temperature-measuring thermistor Rk, described
Two resistance values identical resistance R, a preset temperature value thermistor (temperature) sensor Ro and temperature-measuring thermistor Rk are sequentially connected in series shape
At circuit.
The sampling resistor of the Voltage to current transducer module and the lighting load end are connected in series, to detect the illumination
The curent change of load end.The Voltage to current transducer module further includes LM350 voltage regulator circuit, the LM350 voltage regulator circuit point
It is not connected in series with the lighting load end, sampling resistor.
As the preset temperature value thermistor (temperature) sensor Ro and temperature-measuring thermistor Rk equal, the voltage-controlled mould of D/A
The output of block is 0.
When the operating ambient temperature at the lighting load end reduces, changed by the output end of temperature control module by micro process
Device collects, and by the voltage setting value in the modification voltage-controlled module of D/A, so that the output voltage of the voltage-controlled module of D/A is changed, makes
The electric current flowed through according to stated clearly load end changes, and load end illumination intensity becomes larger.
The application has the following beneficial effects:
The application generates constant voltage output by voltage-controlled circuit environment module, send to lighting load end, to provide hair
Supply voltage required for light, another way are sent to Voltage to current transducer, realize Voltage-current conversion process by sampling resistor；
The voltage that sampling resistor obtains is sent to A/D sampling module, and voltage signal is sampled and stored by microprocessor control, is led to
After crossing the comparison to sample voltage value and preset value, setting value is sent in voltage-controlled circuit environment by the way that D/A is voltage-controlled, to steady
Constant voltage electric current output, to solve the technical issues of guaranteeing the lighting device of temperature control and illumination how simultaneously；
Further, by the way that temperature control module is arranged, the temperature control module connects with the microprocessor, lighting load end respectively
It connects, the temperature in environment for controlling the lighting load end by the temperature control module, and send temperature control result is counter
To the microprocessor, temperature controlled accuracy is improved.
It should be noted last that the above specific embodiment is only used to illustrate the technical scheme of the present invention and not to limit it,
Although being described the invention in detail referring to example, those skilled in the art should understand that, it can be to the present invention
Technical solution be modified or replaced equivalently, without departing from the spirit and scope of the technical solution of the present invention, should all cover
In the scope of the claims of the present invention.
Claims (6)
1. a kind of lighting device for greenhouse, which is characterized in that the lighting device includes voltage-controlled circuit environment module, voltage
Current conversion module, lighting load end, the voltage-controlled module of D/A, A/D sampling module and microprocessor；
The voltage-controlled circuit environment module is connect with the Voltage to current transducer module, lighting load end respectively；The voltage-controlled electricity
Road environment module generates pressure stabilizing output signal, and is respectively sent to the lighting load end, to provide required for illumination light-emitting
Supply voltage, another way send to the Voltage to current transducer module, passes through the sampling of the control Voltage to current transducer module
The conversion process of resistance realization voltage and electric current；
The A/D sampling module is connect with the Voltage to current transducer module, microprocessor respectively, for receiving the voltage electricity
Flow the voltage signal of the sampling resistor of conversion module；
The microprocessor is connect with the A/D sampling module, the voltage-controlled module of D/A respectively, for controlling to the voltage signal
Sampling and storage, and generate the voltage-controlled module of D/A more afterwards by sample voltage value to the voltage signal and preset value and set
Definite value is sent the voltage-controlled module setting value of the D/A into voltage-controlled circuit environment module, by the voltage-controlled module of the D/A with stabilization
Voltage and current output；
Temperature control module, the temperature control module are connect with the microprocessor, lighting load end respectively, for passing through the temperature control mould
Block controls the temperature in the environment at the lighting load end, and send temperature control result is counter to the microprocessor.
2. lighting device as described in claim 1, which is characterized in that the sampling resistor of the Voltage to current transducer module and institute
The series connection of lighting load end is stated, to detect the curent change at the lighting load end.
3. lighting device as described in claim 1, which is characterized in that the Voltage to current transducer module further includes LM350 steady
Volt circuit, the LM350 voltage regulator circuit are connected in series with the lighting load end, sampling resistor respectively.
4. lighting device as described in claim 1, which is characterized in that the temperature control module includes bridge temperature measurement module, described
Bridge temperature measurement module includes the identical resistance R of two resistance values, a preset temperature value thermistor (temperature) sensor Ro and thermometric temperature-sensitive
Resistance Rk, described two resistance values identical resistance R, a preset temperature value thermistor (temperature) sensor Ro and temperature-measuring thermistor Rk
It is sequentially connected in series forming circuit.
5. lighting device as claimed in claim 4, which is characterized in that as the preset temperature value thermistor (temperature) sensor Ro and
When temperature-measuring thermistor Rk is equal, the output of the voltage-controlled module of D/A is 0.
6. lighting device as claimed in claim 4, which is characterized in that when the operating ambient temperature at the lighting load end reduces
When, changed by the output end of temperature control module and collected by microprocessor, set by the voltage in the modification voltage-controlled module of D/A
Value, makes the output voltage of the voltage-controlled module of D/A change, the electric current for flowing through the lighting load end changes, load end
Illumination intensity becomes larger.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710093337.5A CN106873669B (en) | 2017-02-21 | 2017-02-21 | A kind of lighting device for greenhouse |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710093337.5A CN106873669B (en) | 2017-02-21 | 2017-02-21 | A kind of lighting device for greenhouse |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106873669A CN106873669A (en) | 2017-06-20 |
| CN106873669B true CN106873669B (en) | 2019-07-16 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201710093337.5A Expired - Fee Related CN106873669B (en) | 2017-02-21 | 2017-02-21 | A kind of lighting device for greenhouse |
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| CN (1) | CN106873669B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108568456B (en) * | 2018-03-16 | 2020-05-15 | 昆明理工大学 | Preparation method of high-melting-point metal wire |
| CN112684842B (en) * | 2020-12-04 | 2022-07-12 | 中国船舶重工集团公司第七一一研究所 | Current output circuit and current output device |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101344785A (en) * | 2007-07-09 | 2009-01-14 | 万斯达有限公司 | Environment, lighting and security control system |
| CN101463984A (en) * | 2007-12-17 | 2009-06-24 | 富士迈半导体精密工业（上海）有限公司 | Illuminating apparatus |
| CN101490796A (en) * | 2006-07-20 | 2009-07-22 | 奥斯兰姆有限公司 | Lighting system comprising a discharge lamp and an electronic ballast, and method for the operation of a lighting system |
| CN204347650U (en) * | 2015-01-21 | 2015-05-20 | 济南大学 | A kind of digital temperature controller |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102006056057A1 (en) * | 2006-02-28 | 2007-09-06 | Samsung Electro - Mechanics Co., Ltd., Suwon | Drive device for a colored LED backlight |
| TW201116157A (en) * | 2009-08-25 | 2011-05-01 | Koninkl Philips Electronics Nv | LED-based lighting fixtures and related methods for thermal management |
| US20150061498A1 (en) * | 2013-09-03 | 2015-03-05 | G.H.L. International, Inc. | Temperature Controlled High Output LED Lighting System |
-
2017
- 2017-02-21 CN CN201710093337.5A patent/CN106873669B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101490796A (en) * | 2006-07-20 | 2009-07-22 | 奥斯兰姆有限公司 | Lighting system comprising a discharge lamp and an electronic ballast, and method for the operation of a lighting system |
| CN101344785A (en) * | 2007-07-09 | 2009-01-14 | 万斯达有限公司 | Environment, lighting and security control system |
| CN101463984A (en) * | 2007-12-17 | 2009-06-24 | 富士迈半导体精密工业（上海）有限公司 | Illuminating apparatus |
| CN204347650U (en) * | 2015-01-21 | 2015-05-20 | 济南大学 | A kind of digital temperature controller |
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| CN106873669A (en) | 2017-06-20 |
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Granted publication date: 20190716 |