CN205644332U - Utilize green house environmental control circuit of industrial exhaust heat - Google Patents

Abstract

The utility model provides a with being used for the big -arch shelter heating after the low -grade industrial exhaust heat after the cogeneration utilization electricity generation, cold water is used for the cooling of big -arch shelter and an energy can be saved of humidification, safe and reliable's utilize green house environmental control circuit of industrial exhaust heat. The technical solution of the household electrical appliance time switch control system is characterized in tha, first circuit interface J1's 1 pin and 2 pins are connected with first humistor and second humistor respectively, and first circuit interface J1's 5 pins and 4 pins are connected with hot -water line three -way valve and cold water pipe three -way valve respectively, and first circuit interface J1's 6 pins are connected with the humidification shower nozzle, the utility model discloses simple structure, low cost, the low -grade industrial exhaust heat of cyclic utilization realize both having improved industrial exhaust heat energy use rate to the control of the temperature and humidity in the green house, can make the environment in the green house be in the long environment of optimum symphysis all the time simultaneously, have avoided three -phase power supply's input, and safe and reliable provides the powerful guarantee for the quality and the quality of agricultural product.

Description

A kind of agricultural greenhouse environmental Kuznets Curves circuit utilizing industrial exhaust heat

Technical field

This utility model relates to agricultural greenhouse environment controlling technique field, a kind of agricultural greenhouse environmental Kuznets Curves circuit utilizing industrial exhaust heat.

Background technology

Continuous propelling along with agricultural modernization degree, increasing informationization technology applies in agricultural production, it is effectively improved agricultural production efficiency, reduce the natural cause impact on agricultural production, agricultural production has seasonal feature, agricultural greenhouse counter-seas on production just, improve the agricultural production efficiency of agricultural greenhouse, the environmental factors affecting crop growth in agricultural greenhouse is mainly temperature and humidity, the temperature and humidity of agricultural greenhouse is too low or too high, all will affect quality and the speed of growth of crops, the minimizing of Household income certainly will be caused.

Under country vigorously advocates the overall situation of energy-saving and emission-reduction, waste heat power generation equipment has carried out large-scale popularization, after effectively utilizing cogeneration, surplus remaining low grade residual heat can realize the efficient utilization of the energy, and Chinese patent literature discloses the intelligent control circuit (application number: 201410762907.1 of a kind of agricultural greenhouse geothermal heating system；Publication No.: CN 104635530 A), the temperature that this control circuit utilizes GEOTHERMAL WATER to carry out agricultural greenhouse controls, and needs GEOTHERMAL WATER to be extracted out with water pump, wastes the energy, simultaneously the introducing of three-phase electrical source of power, there is potential safety hazard in the environment of hot and humid.

Summary of the invention

For above-mentioned situation, for overcoming the defect of prior art, the purpose of this utility model is used for booth heating after being to provide the low-grade industrial afterheat power generation after cogeneration being utilized, cold water saves the energy, the safe and reliable agricultural greenhouse environmental Kuznets Curves circuit utilizing industrial exhaust heat for cooling and a kind of of humidification of booth.

Its technical scheme solved is, including the first circuit interface J1, second circuit interface J2, power interface J3, temperature-control circuit and humidity control circuit, 1 pin and 2 pins of described first circuit interface J1 are connected to the first humistor and the second humistor, 5 pins of the first circuit interface J1 and 4 pins are connected to hot-water line three-way valve and cold water pipe three-way valve, and 6 pins of the first circuit interface J1 connect humidifying spraying nozzle；

1 pin, 3 pins, 5 pins and 7 pins of described second circuit interface J2 are connected to the first critesistor, the second critesistor, the 3rd critesistor and the 4th critesistor；

1 pin and 2 pins of described first circuit interface J1 are all connected with the input of humidity control circuit, the outfan of humidity control circuit and 6 pins of the first circuit interface J1 connect, second circuit interface J2 is connected with the input of temperature-control circuit, the outfan of temperature-control circuit and 5 pins of the first circuit interface J1 and 4 pins connect, and power interface J3 provides electric energy for humidity control circuit and temperature-control circuit；

nullDescribed humidity control circuit includes operational amplifier U1-A、Model is the chip U11 of LM331、Operational amplifier U1-B、Operational amplifier U2-A、Comparator U2-B and photo-coupler PC1，The reverse input end of described operational amplifier U1-A is through electric capacity C1 ground connection GND，The reverse input end of operational amplifier U1-A and 1 pin of the first circuit interface J1 connect，The reverse input end of operational amplifier U1-A is connected with one end of resistance R1，The other end of resistance R1 and 2 pins of the first circuit interface J1 connect，The other end of resistance R1 is connected with one end of resistance R2，The other end of resistance R2 is connected with the outfan of operational amplifier U1-A，One end of resistance R2 is connected with one end of resistance R3，The other end of resistance R3 is connected with the in-phase input end of operational amplifier U1-A，The other end of resistance R3 is connected with one end of resistance R4，The other end ground connection GND of resistance R4，One end of resistance R2 is connected with one end of electric capacity C2，The other end of electric capacity C2 is connected with one end of resistance R5，The other end of resistance R5 is connected with 7 pins of the chip U11 that model is LM331，The other end of electric capacity C2 is connected with one end of resistance R6，The other end of resistance R6 is connected with one end of resistance R7，The other end of resistance R7 is connected with 7 pins of the chip U11 that model is LM331，Model is that 8 pins of the chip U11 of LM331 are connected with one end of resistance R7，Model is that 5 pins of the chip U11 of LM331 are connected with one end of resistance R10，The other end of resistance R10 is connected with one end of resistance R7，Model is that the 5 of the chip U11 of LM331 draws foot meridian capacitor C4 ground connection GND，Model is that 2 pins of the chip U11 of LM331 are through resistance R8 ground connection GND，Model is that 1 pin of the chip U11 of LM331 is through resistance R11 ground connection GND，Model is that the 1 of the chip U11 of LM331 draws foot meridian capacitor C3 ground connection GND，Model is 3 pins and 4 pins all ground connection GND of the chip U11 of LM331，Model is that 1 pin of the chip U11 of LM331 is connected through the in-phase input end of resistance R13 with operational amplifier U1-B，The reverse input end of operational amplifier U1-B is connected through the outfan of resistance R12 with operational amplifier U1-B，The outfan of operational amplifier U1-B is connected with one end of resistance R14，The other end of resistance R14 is connected with the reverse input end of operational amplifier U2-A，The in-phase input end of operational amplifier U2-A is through resistance R17 ground connection GND，The outfan of operational amplifier U2-A is connected with one end of resistance R16，The other end of resistance R16 is connected with one end of resistance R15，-15V the power supply of another termination power interface J3 of resistance R15，The outfan of operational amplifier U2-A is connected through the reverse input end of resistance R18 with comparator U2-B，The in-phase input end of comparator U2-B and the maximum end of potentiometer R19，The minima end of potentiometer R19 is connected with the slider of potentiometer R19，The minima end of potentiometer R19 is leading-out terminal REF1，The in-phase input end of comparator U2-B is connected through the outfan of resistance R20 with comparator U2-B，The outfan of comparator U2-B is connected with one end of resistance R21，The other end of resistance R21 is connected with 1 pin of photo-coupler PC1，The 2 pin ground connection GND of photo-coupler PC1，5 pins of photo-coupler PC1 connect the+5V power supply of power interface J3，4 pins of photo-coupler PC1 are connected with one end of resistance R22，The other end of resistance R22 is connected with the grid of field effect transistor Q1，The grounded drain GND of field effect transistor Q1，The source electrode of field effect transistor Q1 connects the+24V power supply of power interface J3 through resistance R23，The source electrode of field effect transistor Q1 and 6 pins of the first circuit interface J1 connect；

nullDescribed temperature-control circuit includes operational amplifier U3-A、Operational amplifier U4-A、Operational amplifier U5-A、Operational amplifier U6-A、Comparator U7-B、Comparator U9-B and diode D1-D8，The reverse input end of described operational amplifier U3-A is connected with one end of resistance R26，The other end of resistance R26 is connected with one end of resistance R24，+ 5V the power supply of another termination power interface J3 of resistance R24，The other end of resistance R26 is through resistance R25 ground connection GND，The other end of resistance R26 is through electric capacity C10 ground connection GND，The other end of resistance R26 is connected with 1 pin of second circuit interface J2，The in-phase input end of operational amplifier U3-A is connected with one end of resistance R27，The other end of resistance R27 is connected with the positive pole of diode D1，The outfan of operational amplifier U3-A is connected with the negative pole of diode D5，The negative pole of diode D5 is connected with the positive pole of diode D1，The positive pole of diode D5 is connected with the positive pole of diode D6，The negative pole of diode D6 is connected with the outfan of operational amplifier U4-A，The outfan of operational amplifier U4-A is connected with the positive pole of diode D2，The negative pole of diode D2 is connected with the negative pole of diode D1，The outfan of operational amplifier U4-A is connected through the in-phase input end of resistance R31 with operational amplifier U4-A，The reverse input end of operational amplifier U4-A is connected with one end of resistance R30，The other end of resistance R30 is connected with one end of resistance R28，+ 5V the power supply of another termination power interface J3 of resistance R28，The other end of resistance R30 is through resistance R29 ground connection GND，The other end of resistance R30 is through electric capacity C11 ground connection GND，The other end of resistance R30 is connected with 3 pins of second circuit interface J2，The positive pole of diode D5 is connected with the positive pole of diode D7，The positive pole of diode D7 is connected through the reverse input end of resistance R40 with comparator U7-B，The in-phase input end of comparator U7-B is through resistance R42 ground connection GND，The in-phase input end of comparator U7-B is connected with the maximum end of potentiometer R41，The minima end of potentiometer R41 is connected with the slider of potentiometer R41，The minima end of potentiometer R41 is leading-out terminal REF2，The outfan of comparator U7-B connects through the input of resistance R43 NAND gate U10-B，The input of not gate U10-B is connected with an input of NAND gate U8-B，The input of not gate U10-B is connected with an input of NAND gate U8-A，The outfan of not gate U10-B is connected with an input of NAND gate U8-C，The negative pole of diode D7 is connected with the outfan of operational amplifier U5-A，The outfan of operational amplifier U5-A is connected through the in-phase input end of resistance R35 with operational amplifier U5-A，The outfan of operational amplifier U5-A is connected with the positive pole of diode D3，The reverse input end of operational amplifier U5-A is connected with one end of resistance R34，The other end of resistance R34 is through resistance R33 ground connection GND，The other end of resistance R34 is through electric capacity C12 ground connection GND，The other end of resistance R34 connects the+5V power supply of power interface J3 through resistance R32，The negative pole of diode D3 is connected with the negative pole of diode D1，The positive pole of diode D5 is connected with the positive pole of diode D8，The negative pole of diode D8 is connected with the outfan of operational amplifier U6-A，The outfan of operational amplifier U6-A is connected through the in-phase input end of resistance R39 with operational amplifier U6-A，The reverse input end of operational amplifier U6-A is connected with one end of resistance R38，The other end of resistance R38 is connected with one end of resistance R36，+ 5V the power supply of another termination power interface J3 of resistance R36，The other end of resistance R38 is through resistance R37 ground connection GND，The other end of resistance R38 is through electric capacity C5 ground connection GND，The other end of resistance R38 is connected with 7 pins of second circuit interface J2，2 pins of second circuit interface J2、4 pins、6 pins and 8 pin ground connection GND，The outfan of operational amplifier U6-A is connected with the positive pole of diode D4，The negative pole of diode D4 is connected with one end of resistance R45，The other end of resistance R45 is connected with the reverse input end of comparator U9-B，The in-phase input end of comparator U9-B is through resistance R47 ground connection GND，The in-phase input end of comparator U9-B is connected with the maximum end of potentiometer R46，The minima end of potentiometer R46 is connected with the slider of potentiometer R46，The minima end of potentiometer R46 is leading-out terminal REF3，The outfan of comparator U9-B connects through the input of resistance R48 NAND gate U10-A，The input of not gate U10-A is connected with another input of NAND gate U8-B，The outfan of not gate U10-A is connected with another input of NAND gate U8-C，The outfan of not gate U10-A is connected with another input of NAND gate U8-A，The outfan of NAND gate U8-A is connected with one end of buzzer BL，+ 5V the power supply of another termination power interface J3 of buzzer BL，The outfan of NAND gate U8-B is connected through 2 pins of resistance R50 and photo-coupler PC2，1 pin of photo-coupler PC2 connects the+15V power supply of power interface J3，5 pins of photo-coupler PC2 connect the+5V power supply of power interface J3，4 pins of photo-coupler PC2 are connected with one end of resistance R44，The other end of resistance R44 and 5 pins of the first circuit interface J1 connect，The outfan of NAND gate U8-C is connected through 2 pins of resistance R51 and photo-coupler PC3，1 pin of photo-coupler PC3 connects the+15V power supply of power interface J3，5 pins of photo-coupler PC3 connect the+5V power supply of power interface J3，4 pins of photo-coupler PC3 are connected with one end of resistance R49，The other end of resistance R49 and 4 pins of the first circuit interface J1 connect.

This utility model simple in construction, with low cost, recycle low-grade industrial exhaust heat and realize the control to the temperature and humidity in agricultural greenhouse, both improve the utilization rate of industrial exhaust heat energy, the environment in agricultural greenhouse can be made to be in the environment being best suitable for growth all the time simultaneously, avoiding the input of three-phase electrical source of power, safe and reliable, quality and quality for agricultural product provide powerful guarantee.

Accompanying drawing explanation

Fig. 1 is the circuit connection diagram (a) of humidity control circuit of the present utility model；

Fig. 2 is the circuit connection diagram (b) of humidity control circuit of the present utility model；

Fig. 3 is the circuit connection diagram (a) of temperature-control circuit of the present utility model；

Fig. 4 is the circuit connection diagram (b) of temperature-control circuit of the present utility model；

Fig. 5 is the circuit connection diagram of the first circuit interface J1 of the present utility model；

Fig. 6 is the circuit connection diagram of second circuit interface J2 of the present utility model；

Fig. 7 is the circuit connection diagram of power interface J3 of the present utility model.

Detailed description of the invention

Below in conjunction with accompanying drawing, detailed description of the invention of the present utility model is described in further detail.

In conjunction with shown in Fig. 1 to Fig. 7, a kind of agricultural greenhouse environmental Kuznets Curves circuit utilizing industrial exhaust heat of the present utility model,

Humidity control circuit and temperature-control circuit that described power interface J3 is the whole agricultural greenhouse utilizing industrial exhaust heat provide electric energy, described power interface J3 power supply is to be generated electricity by solar electrical energy generation or wind-power electricity generation or the combination of the two, utilize solar energy or wind energy, save the energy, environmental protection.

Described model be the chip U11 of LM331 be LM331 voltage to frequency converter.

Described humidity control circuit is connected to the first humistor and the second humistor by 1 pin and 2 pins of the first circuit interface J1, electric capacity C1, resistance R1-R4 and operational amplifier U1-A forms humidity sample circuit, by the chip U11 that model is LM331, resistance R6-R11 and electric capacity C2-C4 component frequency voltage conversion circuit, by operational amplifier U1-B, resistance R12, the voltage follower of resistance R13 composition, by operational amplifier U2-A, the add circuit of resistance R14-R17 composition, by comparator U2-B, first hysteresis comparator of resistance R18-R21 composition, by photo-coupler PC1, resistance R22, resistance R23 and the switching value output circuit of field effect transistor Q1 composition；Moisture signal is connected with frequency-voltage conversion circuit through humidity sample circuit, and freq converting circuit is connected with the first hysteresis comparator through voltage follower and adder successively, and the first hysteresis comparator is connected with the amount of opening the light output circuit；

nullMoisture signal is in parallel with resistance R1 by the first humistor and the second humistor，And constitute RC loop with electric capacity C1，Time constant RC1 in this RC loop，Here R be in parallel with the first humistor again after resistance R1 and the series connection of the second humistor after resistance value，Resistance R3 and resistance R4 series connection dividing potential drop，The output voltage of operational amplifier U1-A is carried out dividing potential drop the input as operational amplifier U1-A in-phase input end，When the voltage at electric capacity C1 two ends is higher than the voltage at resistance R4 two ends，Operational amplifier U1-A output low level，Now electric capacity C1 electric discharge，When the voltage at electric capacity C1 two ends is less than the voltage at resistance R4 two ends，Operational amplifier U1-A exports high level，The time constant in RC loop determines the frequency of low and high level switching，The namely frequency of square wave，So the resistance of the first humistor and the second humistor determines the frequency of square wave，Under different humidity, the frequency of square wave is different；nullThe outfan of humidity sample circuit is connected with the input of frequency-voltage conversion circuit，Frequency-voltage conversion circuit connects through voltage follower and add circuit and the first hysteresis comparator successively，First hysteresis comparator is connected with switching value output circuit，One end of described electric capacity C2 is connected with the output of humidity sample circuit，The other end of electric capacity C2 is connected to 6 pins of the chip U11 that model is LM331，For completely cutting off direct current，Described resistance R11、Electric capacity C3 forms RC filter circuit，For filtering interference signals，Model be 6 pins of the chip U11 of LM331 be signal input part，Model be 1 pin of the chip U11 of LM331 be signal output part，For the square-wave signal of input is converted to the voltage signal that amplitude is directly proportional to square wave frequency，Described voltage follower is affected little by front stage circuit，DC error is little，Described add circuit is used for the value after voltage follower of the voltage signal to frequency-voltage conversion circuit and is modified，The in-phase input end of the comparator U2-B in described first hysteresis comparator connects through potentiometer R19 and the first humistor，The homophase input voltage of comparator U2-B is adjusted by the resistance adjusting potentiometer R19，Thus control the output of the outfan of comparator U2-B；The source output of field effect transistor Q1 in described switching value output circuit is as the control signal controlling humidifying spraying nozzle, when 1 pin of photo-coupler PC1 is low level, photo-coupler PC1 ends, the now source electrode output+24V power supply of field effect transistor Q1, switching off of humidifying spraying nozzle, when 1 pin of photo-coupler PC1 is high level, photo-coupler PC1 turns on, the source electrode output low level of field effect transistor Q1, the switch Guan Bi of humidifying spraying nozzle.

nullDescribed temperature-control circuit is made up of four road temperature sampling circuits，As a example by a road temperature sampling circuit，By resistance R24-R27、Electric capacity C10 and operational amplifier U3-A forms temperature sampling circuit，Resistance R25 and the first critesistor、After electric capacity C10 parallel connection again with electric capacity C10、Operational amplifier U3-A forms bleeder circuit，This bleeder circuit right+5V power supply carries out dividing potential drop，The voltage follower output that voltage after dividing potential drop forms through resistance R26 and resistance R27，By diode D1-D4, the maximum output valve of four road temperature sampling circuits is selected，By diode D5-D8, the minimum output valve of four road temperature sampling circuits is selected，The maximum selected and minima are respectively compared the second hysteresis comparator of device U7-B and comparator U9-B composition and compare，Two comparative results are connected with buzzer BL by the output of NAND gate U8-A，The comparative result of minima negates rear and maximum comparative result and passes through NAND gate U8-B via resistance R50、Photo-coupler PC2、First switching value circuit of resistance R44 composition，The output signal of this first switching value circuit is as the control signal of hot-water line three-way valve，The comparative result of maximum negates rear and minima comparative result and passes through NAND gate U9-C via resistance R51、The second switch amount circuit of photo-coupler PC3 and resistance R49 composition，The output signal of this second switch amount circuit is as the control signal of cold water pipe three-way valve.

This utility model in use,

In Fig. 1 and Fig. 2, preset the humidity value in agricultural greenhouse, when the actual humidity in agricultural greenhouse is less than the humidity value set, now the frequency of humidity sample circuit is reduced to certain value, and the comparison voltage of the first hysteresis comparator is less than the humidity value set, the outfan output high level of comparator U2-B, photo-coupler PC1 turns on, the source electrode output low level of field effect transistor Q1, the control signal control humidifying spraying nozzle now inputting humidifying spraying nozzle is started working, and humidifies agricultural greenhouse；When the actual humidity in agricultural greenhouse is higher than the humidity value set, now the frequency of humidity sample circuit increases to certain value, the comparison voltage of the first hysteresis comparator is higher than the humidity value set, the now outfan output low level of comparator U2-B, photo-coupler PC1 ends, the source electrode output high level of field effect transistor Q1, now humidifying spraying nozzle does not works, this utility model uses hysteresis comparator, humidifying spraying nozzle will not work frequently, the temperature of agricultural greenhouse is in an interval, humidifying spraying nozzle is idle, save the water yield, make again the temperature in agricultural greenhouse be maintained at one suitably in the range of, improve the utilization rate of industrial exhaust heat energy.

nullIn Fig. 3 and Fig. 4，Preset the temperature value in agricultural greenhouse，First critesistor、Second critesistor、After one resistor coupled in parallel of the 3rd critesistor and the 4th critesistor and temperature sampling circuit，Dividing potential drop is carried out with another resistant series，The voltage obtained exports after voltage follower，As long as a road temperature therein is less than after certain value，The dividing potential drop of this critesistor just reduces，This minima is just selected by the network being made up of diode D1-D4，If this minima is less than setting value，The outfan output high level of comparator U7-B，The outfan output high level of comparator U9-B，Now NAND gate U8-B output low level，4 pins of photo-coupler PC1 are through 5 pins of resistance R44 output high level to the first circuit interface J1，Agricultural greenhouse is heated by the three-way valve controlling hot-water line by cogeneration profit used hot water feeding agricultural greenhouse；When a road temperature therein is higher than certain value, the outfan output low level of comparator U9-B, the now outfan output low level of comparator U7-B, now NAND gate U8-C output low level, then cold water is sent into agricultural greenhouse lower the temperature agricultural greenhouse through 4 pins of resistance R49 output high level to the first circuit interface J1, the three-way valve of control cold water pipe by 4 pins of photo-coupler PC3；Outfan output low level as comparator U9-B, the outfan output high level of comparator U7-B, illustrate that the temperature that critesistor detects has higher than maximum set value, have less than minimum setting value, illustrating that critesistor is made mistakes, now NAND gate U8-A output low level, buzzer BL works, remind plantation family critesistor to be out of order, critesistor need to be replaced.

This utility model simple in construction, with low cost, recycle low-grade industrial exhaust heat and realize the control to the temperature and humidity in agricultural greenhouse, both improve the utilization rate of industrial exhaust heat energy, the environment in agricultural greenhouse can be made to be in the environment being best suitable for growth all the time simultaneously, avoiding the input of three-phase electrical source of power, safe and reliable, quality and quality for agricultural product provide powerful guarantee.

Claims (2)

1. the agricultural greenhouse environmental Kuznets Curves circuit utilizing industrial exhaust heat, including the first circuit interface J1, second circuit interface J2, power interface J3, temperature-control circuit and humidity control circuit, it is characterized in that, 1 pin and 2 pins of described first circuit interface J1 are connected to the first humistor and the second humistor, 5 pins of the first circuit interface J1 and 4 pins are connected to hot-water line three-way valve and cold water pipe three-way valve, and 6 pins of the first circuit interface J1 connect humidifying spraying nozzle；

1 pin, 3 pins, 5 pins and 7 pins of described second circuit interface J2 are connected to the first critesistor, the second critesistor, the 3rd critesistor and the 4th critesistor；

1 pin and 2 pins of described first circuit interface J1 are all connected with the input of humidity control circuit, the outfan of humidity control circuit and 6 pins of the first circuit interface J1 connect, second circuit interface J2 is connected with the input of temperature-control circuit, the outfan of temperature-control circuit and 5 pins of the first circuit interface J1 and 4 pins connect, and power interface J3 provides electric energy for humidity control circuit and temperature-control circuit；

nullDescribed humidity control circuit includes operational amplifier U1-A、Model is the chip U11 of LM331、Operational amplifier U1-B、Operational amplifier U2-A、Comparator U2-B and photo-coupler PC1，The reverse input end of described operational amplifier U1-A is through electric capacity C1 ground connection GND，The reverse input end of operational amplifier U1-A and 1 pin of the first circuit interface J1 connect，The reverse input end of operational amplifier U1-A is connected with one end of resistance R1，The other end of resistance R1 and 2 pins of the first circuit interface J1 connect，The other end of resistance R1 is connected with one end of resistance R2，The other end of resistance R2 is connected with the outfan of operational amplifier U1-A，One end of resistance R2 is connected with one end of resistance R3，The other end of resistance R3 is connected with the in-phase input end of operational amplifier U1-A，The other end of resistance R3 is connected with one end of resistance R4，The other end ground connection GND of resistance R4，One end of resistance R2 is connected with one end of electric capacity C2，The other end of electric capacity C2 is connected with one end of resistance R5，The other end of resistance R5 is connected with 7 pins of the chip U11 that model is LM331，The other end of electric capacity C2 is connected with one end of resistance R6，The other end of resistance R6 is connected with one end of resistance R7，The other end of resistance R7 is connected with 7 pins of the chip U11 that model is LM331，Model is that 8 pins of the chip U11 of LM331 are connected with one end of resistance R7，Model is that 5 pins of the chip U11 of LM331 are connected with one end of resistance R10，The other end of resistance R10 is connected with one end of resistance R7，Model is that the 5 of the chip U11 of LM331 draws foot meridian capacitor C4 ground connection GND，Model is that 2 pins of the chip U11 of LM331 are through resistance R8 ground connection GND，Model is that 1 pin of the chip U11 of LM331 is through resistance R11 ground connection GND，Model is that the 1 of the chip U11 of LM331 draws foot meridian capacitor C3 ground connection GND，Model is 3 pins and 4 pins all ground connection GND of the chip U11 of LM331，Model is that 1 pin of the chip U11 of LM331 is connected through the in-phase input end of resistance R13 with operational amplifier U1-B，The reverse input end of operational amplifier U1-B is connected through the outfan of resistance R12 with operational amplifier U1-B，The outfan of operational amplifier U1-B is connected with one end of resistance R14，The other end of resistance R14 is connected with the reverse input end of operational amplifier U2-A，The in-phase input end of operational amplifier U2-A is through resistance R17 ground connection GND，The outfan of operational amplifier U2-A is connected with one end of resistance R16，The other end of resistance R16 is connected with one end of resistance R15，-15V the power supply of another termination power interface J3 of resistance R15，The outfan of operational amplifier U2-A is connected through the reverse input end of resistance R18 with comparator U2-B，The in-phase input end of comparator U2-B and the maximum end of potentiometer R19，The minima end of potentiometer R19 is connected with the slider of potentiometer R19，The minima end of potentiometer R19 is leading-out terminal REF1，The in-phase input end of comparator U2-B is connected through the outfan of resistance R20 with comparator U2-B，The outfan of comparator U2-B is connected with one end of resistance R21，The other end of resistance R21 is connected with 1 pin of photo-coupler PC1，The 2 pin ground connection GND of photo-coupler PC1，5 pins of photo-coupler PC1 connect the+5V power supply of power interface J3，4 pins of photo-coupler PC1 are connected with one end of resistance R22，The other end of resistance R22 is connected with the grid of field effect transistor Q1，The grounded drain GND of field effect transistor Q1，The source electrode of field effect transistor Q1 connects the+24V power supply of power interface J3 through resistance R23，The source electrode of field effect transistor Q1 and 6 pins of the first circuit interface J1 connect；

nullDescribed temperature-control circuit includes operational amplifier U3-A、Operational amplifier U4-A、Operational amplifier U5-A、Operational amplifier U6-A、Comparator U7-B、Comparator U9-B and diode D1-D8，The reverse input end of described operational amplifier U3-A is connected with one end of resistance R26，The other end of resistance R26 is connected with one end of resistance R24，+ 5V the power supply of another termination power interface J3 of resistance R24，The other end of resistance R26 is through resistance R25 ground connection GND，The other end of resistance R26 is through electric capacity C10 ground connection GND，The other end of resistance R26 is connected with 1 pin of second circuit interface J2，The in-phase input end of operational amplifier U3-A is connected with one end of resistance R27，The other end of resistance R27 is connected with the positive pole of diode D1，The outfan of operational amplifier U3-A is connected with the negative pole of diode D5，The negative pole of diode D5 is connected with the positive pole of diode D1，The positive pole of diode D5 is connected with the positive pole of diode D6，The negative pole of diode D6 is connected with the outfan of operational amplifier U4-A，The outfan of operational amplifier U4-A is connected with the positive pole of diode D2，The negative pole of diode D2 is connected with the negative pole of diode D1，The outfan of operational amplifier U4-A is connected through the in-phase input end of resistance R31 with operational amplifier U4-A，The reverse input end of operational amplifier U4-A is connected with one end of resistance R30，The other end of resistance R30 is connected with one end of resistance R28，+ 5V the power supply of another termination power interface J3 of resistance R28，The other end of resistance R30 is through resistance R29 ground connection GND，The other end of resistance R30 is through electric capacity C11 ground connection GND，The other end of resistance R30 is connected with 3 pins of second circuit interface J2，The positive pole of diode D5 is connected with the positive pole of diode D7，The positive pole of diode D7 is connected through the reverse input end of resistance R40 with comparator U7-B，The in-phase input end of comparator U7-B is through resistance R42 ground connection GND，The in-phase input end of comparator U7-B is connected with the maximum end of potentiometer R41，The minima end of potentiometer R41 is connected with the slider of potentiometer R41，The minima end of potentiometer R41 is leading-out terminal REF2，The outfan of comparator U7-B connects through the input of resistance R43 NAND gate U10-B，The input of not gate U10-B is connected with an input of NAND gate U8-B，The input of not gate U10-B is connected with an input of NAND gate U8-A，The outfan of not gate U10-B is connected with an input of NAND gate U8-C，The negative pole of diode D7 is connected with the outfan of operational amplifier U5-A，The outfan of operational amplifier U5-A is connected through the in-phase input end of resistance R35 with operational amplifier U5-A，The outfan of operational amplifier U5-A is connected with the positive pole of diode D3，The reverse input end of operational amplifier U5-A is connected with one end of resistance R34，The other end of resistance R34 is through resistance R33 ground connection GND，The other end of resistance R34 is through electric capacity C12 ground connection GND，The other end of resistance R34 connects the+5V power supply of power interface J3 through resistance R32，The negative pole of diode D3 is connected with the negative pole of diode D1，The positive pole of diode D5 is connected with the positive pole of diode D8，The negative pole of diode D8 is connected with the outfan of operational amplifier U6-A，The outfan of operational amplifier U6-A is connected through the in-phase input end of resistance R39 with operational amplifier U6-A，The reverse input end of operational amplifier U6-A is connected with one end of resistance R38，The other end of resistance R38 is connected with one end of resistance R36，+ 5V the power supply of another termination power interface J3 of resistance R36，The other end of resistance R38 is through resistance R37 ground connection GND，The other end of resistance R38 is through electric capacity C5 ground connection GND，The other end of resistance R38 is connected with 7 pins of second circuit interface J2，2 pins of second circuit interface J2、4 pins、6 pins and 8 pin ground connection GND，The outfan of operational amplifier U6-A is connected with the positive pole of diode D4，The negative pole of diode D4 is connected with one end of resistance R45，The other end of resistance R45 is connected with the reverse input end of comparator U9-B，The in-phase input end of comparator U9-B is through resistance R47 ground connection GND，The in-phase input end of comparator U9-B is connected with the maximum end of potentiometer R46，The minima end of potentiometer R46 is connected with the slider of potentiometer R46，The minima end of potentiometer R46 is leading-out terminal REF3，The outfan of comparator U9-B connects through the input of resistance R48 NAND gate U10-A，The input of not gate U10-A is connected with another input of NAND gate U8-B，The outfan of not gate U10-A is connected with another input of NAND gate U8-C，The outfan of not gate U10-A is connected with another input of NAND gate U8-A，The outfan of NAND gate U8-A is connected with one end of buzzer BL，+ 5V the power supply of another termination power interface J3 of buzzer BL，The outfan of NAND gate U8-B is connected through 2 pins of resistance R50 and photo-coupler PC2，1 pin of photo-coupler PC2 connects the+15V power supply of power interface J3，5 pins of photo-coupler PC2 connect the+5V power supply of power interface J3，4 pins of photo-coupler PC2 are connected with one end of resistance R44，The other end of resistance R44 and 5 pins of the first circuit interface J1 connect，The outfan of NAND gate U8-C is connected through 2 pins of resistance R51 and photo-coupler PC3，1 pin of photo-coupler PC3 connects the+15V power supply of power interface J3，5 pins of photo-coupler PC3 connect the+5V power supply of power interface J3，4 pins of photo-coupler PC3 are connected with one end of resistance R49，The other end of resistance R49 and 4 pins of the first circuit interface J1 connect.

A kind of agricultural greenhouse environmental Kuznets Curves circuit utilizing industrial exhaust heat the most according to claim 1, it is characterised in that described model be the chip U11 of LM331 be LM331 voltage to frequency converter.