CN104082843A - Heat grading circulation control method of air energy tobacco curing system and device thereof - Google Patents

Heat grading circulation control method of air energy tobacco curing system and device thereof Download PDF

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Publication number
CN104082843A
CN104082843A CN201410122085.0A CN201410122085A CN104082843A CN 104082843 A CN104082843 A CN 104082843A CN 201410122085 A CN201410122085 A CN 201410122085A CN 104082843 A CN104082843 A CN 104082843A
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control
chip microcomputer
temperature
subprogram
timing
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CN104082843B (en
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蒋宏婉
张文博
何林
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Jinmin tobacco farmers' Professional Cooperative in Debao County
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Guizhou University
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Abstract

The invention discloses a heat grading circulation control method of an air energy tobacco curing system and a device thereof. The system combines a multipoint temperature measurement control system and a timing control system; the main program of the multipoint temperature measurement control system comprises a system initialization subprogram and an interrupt service program; the interrupt service program comprises a multipoint temperature detection subprogram, a key scanning subprogram, a temperature display subprogram, a temperature control subprogram and an alarm subprogram; the timing control system adopts a timer T0 to accomplish interrupt; a second chronograph adopts a timer T1 to accomplish interrupt; the main program of the timing control system circularly calls a display subprogram, an alarm subprogram and a keyboard scanning subprogram. The system takes air energy as a heat source, realizes multipoint temperature measurement heat grading cyclic utilization through temperature control and timing systems, accomplishes the control strategy of the whole system, and can realize system air current circulation simulation and circuit simulation of the control systems.

Description

Heat classification cycle control method and the device thereof of air energy tobacco roasting system
Technical field
The present invention relates to tobacco roasting production system, be specifically related to heat classification cycle control method and device thereof for a kind of air energy tobacco roasting system of rural area tobacco roasting.
Background technology
Tobacco is a kind of common consumer goods of modern society, and Flue-cured Tobacco in China output accounts for the more than 80% of tobacco output aggregate, and cured tobacco production mainly concentrates on the provinces such as Yunnan, Henan, Guizhou, Shandong.The production process of flue-cured tobacco be broadly divided into grow seedlings, grown in field and tobacco flue-curing three phases.Tobacco flue-curing is reflection and determines one of the key link of Flue-cured tobacco Quality and productivity effect.It relates to organic cooperation of the many factors such as tobacco leaf picking quality, curing equipment, baking process and practical experience.The baking of tobacco leaf is a system engineering that relates to multiclass knowledge thus.Traditional tobacco flue-curing technology, is that the loose tobacco leaf cigarette of slices is formed to a luxuriant tobacco leaf lush, and then tobacco leaf lush is put into bakery and toast.
Along with the submission of China's leaf tobacco production level, Tobacco Leaf Curing becomes the key factor of restriction quality of tobacco, and temperature in barn to control proper be the essential condition that bakes the good tobacco leaf of a stove.Yet due to barn specification with control manually temperature etc., be difficult to control the lifting, stable and evenly of temperature in barn in the bake process of tobacco leaf.South China area, annual and day and night variations in temperature is large, traditional flue-cured tobacco technology and artificial method for regulating temperature efficiency are low, poor stability, poor effect, have limited to a great extent flue-cured tobacco benefit.The tobacco expert Sa Ge Muller of Germany has been invented a kind of tobacco leaf drying method, and when it can make the moisture evaporation in tobacco leaf, temperature reduces.This new furnace drying method indicates the once change of tobacco leaf process technology, has obtained at present area and international monopoly.The complete temperature and humidity intelligent control system of China has been applied to the industries such as modern greenhouse, storage and herding, but price is too expensive, and lacks the specific aim that tobacco flue-curing is used.
To this, notification number is CN203241845U, the day for announcing to be to disclose " a kind of tobacco flue-curing temperature and humidity control system " in the Chinese patent literature on October 16th, 2013, comprise central controller, the humidity sensor being connected by data wire with central controller and temperature sensor and by humidifier, dehumidifier, air blast and the heater of central controller controls switch, central controller is controlled the operation of each equipment according to the temperature and humidity value of setting.It can be by reaching the object of automatic control baking to the basic transformation of tobacco flue-curing house, practical, cured effect is good, is applicable to the use in the loose leaf baking of tobacco leaf place.
And according to tobacco roasting process characteristic, know, bake process mainly has higher requirements to temperature and time, thus temperature control system and timing system need work simultaneously, yet prior art not yet can effectively realize this.
Summary of the invention
The object of the invention is to, for overcoming in the tobacco roasting technology of existing rural area the dissatisfactory problem of the control of temperature and time, provides a kind of heat classification cycle control method and device thereof of air energy tobacco roasting system.
Technical scheme of the present invention is as follows:
The heat classification cycle control method of a kind of air energy tobacco roasting system of the present invention, it adopts multi-point temperature measurement control system and timing control system to combine; Described multi-point temperature measurement control system main program comprise that initialization subroutine and the interrupt service routine of system, interrupt service routine comprise that again multi-point temp detection, key scan, temperature show, temperature is controlled, warning subprogram; Described timing control system adopts timer T0 to interrupt, and stopwatch uses timer T1 to interrupt; The main program recursive call display subroutine of described timing control system, warning subprogram, keyboard scan subprogram.
The main program of this multi-point temperature measurement control system comprises initialization subroutine and the interrupt service routine of system, and interrupt service routine comprises that again multi-point temp detection, key scan, temperature show, temperature is controlled, warning subprogram.System must be undertaken by agreement the various operations of DS18B20 type temperature sensor, a plurality of temperature sensors are connected to the different pins of single-chip microcomputer, by design control algolithm, multipoint acquisition temperature value are averaged, and send into demonstration fracture, can realize multi-point temperature measurement.
The control of this temperature control system to temperature, only need to be by realizing the control of relay on-off, and when P1.7 mouth is high level, relay is connected, and heat pump heating system is hot-air altogether.This temperature control system be take the mean value of multi-point temp value and is carried out computing as object input single-chip microcomputer inside, and preset temperature range is 65 ℃ ~ 68 ℃, and temperature range can be by changing the adjustment of macro-variable in program.
In described timing control system, when time timing is to setting-up time, proceed to warning subprogram; When Pause key is pressed, timing pause TP, waits for and again presses recovery timing.The timer cycle of overflowing is 125ms, interrupts entering the rear Interruption initial value correction of first carrying out, when interrupting accumulative total while being 125ms8=1s 8 times, to second counting unit add 1 operation, maximum clocking value is 99 hours 59 minutes 59 seconds.In counting unit, adopt decimal system binary-coded decimal counting, the full decade in individual position, ten full six carries.According to tobacco roasting process characteristic, native system is 38 hours by Preset Time, according to actual conditions, can adjust Preset Time by program macro-variable.
Method based on above-mentioned, the present invention proposes a kind of like this tobacco roasting system control device, it comprises barn, air inlet at barn is provided with air exhauster, air exhauster is connected with source pump chamber by least one hot-air utilidor, source pump chamber is controlled by solid-state relay, solid-state relay is controlled by solid-state relay drive circuit, solid-state relay drive circuit connects single-chip microcomputer one and single-chip microcomputer two and accepts the instruction of these two single-chip microcomputers, single-chip microcomputer two be arranged on temperature sensor in barn and be connected and receive its transducing signal.Single-chip microcomputer one and single-chip microcomputer two are provided with keyboard that can input message, and wherein the keyboard of single-chip microcomputer one is used for arranging the ticket reserving time.Single-chip microcomputer one and single-chip microcomputer two are provided with warning piece and display unit.Single-chip microcomputer one and single-chip microcomputer two are AT89C52 type single-chip microcomputer.The quantity of temperature sensor is more than two, and the model of temperature sensor is DS18B20 sensor.
The present invention has following technique effect: the present invention is based on the research to heat classification utilization, temperature control and timing system and contrary Carnot's principle, propose the tobacco roasting system schema that air energy heat classification cycle is controlled.It can be thermal source that this system be take air, realizes the heat classification cycle of multi-point temperature measurement utilize by temperature control and timing system, completes the control strategy of whole system, and the circuit simulation of the simulation of feasible system airflow circulating and control system.
Accompanying drawing explanation
Fig. 1 is tobacco roasting system control device structural representation of the present invention;
Fig. 2 is multi-point temperature measurement control system workflow diagram of the present invention;
Fig. 3 is timing control system workflow diagram of the present invention.
Description of reference numerals: 1-barn, 2-air exhauster, 3-hot-air utilidor, 4-source pump, 5-solid-state relay, 6-relay drive circuit, 7-single-chip microcomputer one, 8-single-chip microcomputer two, 9-temperature sensor.
The specific embodiment
Below in conjunction with drawings and Examples, the present invention is described in further detail.
First see Fig. 1, Fig. 1 is tobacco roasting system control device structural representation of the present invention, according to tobacco roasting process characteristic, know, bake process mainly has higher requirements to temperature and time, so temperature control system and timing system need be worked simultaneously, by controlling solid-state relay 5(, by relay drive circuit 6, driven) break-make control the break-make of source pump 4 power supplys, and then control by the supply of the hot-air in hot-air utilidor 3 and air exhauster 2, finally reach the object of controlling barn 1 interior temperature.Two control systems (multi-point temperature measurement control system and timing control system) all be take single chip computer AT 89C52(and are comprised single-chip microcomputer 1 and single-chip microcomputer 2 8) be control core, DS18B20 digital temperature sensor 9 is temperature element, and other peripheral module elements mainly contain relay, digital frequency, the input keyboard etc. of showing.
For the interior temperature of objective explanation barn 1, temperature control system adopts multi-point temperature measurement, can be at the interior uniform a plurality of temperature sensors 9 of whole barn 1, by certain algorithm, the mean value input single-chip microcomputer of each point temperature value is compared with setting value, output valve after single-chip microcomputer internal arithmetic enters relay drive circuit 6 as single-chip microcomputer output order, controls solid-state relay 5 duties.According to tobacco flue-curing stage required time, by keyboard, will input the time, and demonstrate time flow regime in number shows frequently, startup system is started working.
Work/halted state that single-chip microcomputer only need be controlled solid-state relay 5 is that on/off is switched, and the on off operating mode time is depended on the difference size between Real-time Collection temperature and setting value.When barn 1 temperature is lower than 1 ℃ of minimum setting value, alarm can be reported to the police simultaneous temperature sensor 9 at once just by a series of conversions of this difference process, computing gained output valve enters relay drive circuit 6 as single-chip microcomputer output order, relay is connected, compressor switches on power, source pump is started working, and Heat of Formation air flows into barn, until barn 1 temperature reaches setting value; In house, environment temperature is higher than 1 ℃ of the highest setting value, as the inverse process of said process, alarm can be reported to the police simultaneous temperature sensor 9 at once by a series of conversions input of this difference process single-chip microcomputers, output valve after single-chip microcomputer internal arithmetic enters relay drive circuit 6 as single-chip microcomputer output order, compressor power-off, source pump quits work, no longer to barn 1, supply hot-air in " breaking " state, temperature is controlled at the temperature constant state of setting value all the time the most at last, reaches barn 1 multi-point temperature measurement constant temperature and automatically controls.In like manner, in timing system, when clock is shown as setting-up time, time is up, and system is sent signal and entered single-chip microcomputer, output valve after a series of conversions in its inside and computing enters relay drive circuit 6 as output order, controls solid-state relay 5 and disconnects.
The main program of this temperature control system comprises initialization subroutine and the interrupt service routine of system, and interrupt service routine comprises that again multi-point temp detection, key scan, temperature show, temperature is controlled, warning subprogram.System must be undertaken by agreement the various operations of DS18B20, a plurality of temperature sensors is connected to the different pins of single-chip microcomputer, by design control algolithm, multipoint acquisition temperature value is averaged, and send into demonstration fracture, and can realize multi-point temperature measurement, workflow diagram is as shown in Figure 2.
The control of this temperature control system to temperature, only need to be by realizing the control of relay on-off, and when P1.7 mouth is high level, relay is connected, and heat pump heating system is hot-air altogether.This temperature control system be take the mean value of multi-point temp value and is carried out computing as object input single-chip microcomputer inside, and preset temperature range is 65 ℃ ~ 68 ℃, and temperature range can be by changing the adjustment of macro-variable in program.
Timing system of the present invention adopts timer T0 to interrupt, and stopwatch uses timer T1 to interrupt.Main program recursive call display subroutine, warning subprogram, keyboard scan subprogram.When time timing is to setting-up time, proceed to warning subprogram; When Pause key is pressed, timing pause TP, waits for and again presses recovery timing, specific works flow process figure as shown in Figure 3.
The timer cycle of overflowing is 125ms, interrupts entering the rear Interruption initial value correction of first carrying out, when interrupting accumulative total while being 125ms * 8=1s 8 times, to second counting unit add 1 operation, maximum clocking value is 99 hours 59 minutes 59 seconds.In counting unit, adopt decimal system binary-coded decimal counting, the full decade in individual position, ten full six carries.According to tobacco roasting process characteristic, native system is 38 hours by Preset Time, according to actual conditions, can adjust Preset Time by program macro-variable.
According to tobacco roasting technological flow analysis, the invention provides an embodiment as follows:
Changing yellow stage: initial temperature 32 degree, with the speed of 1 ℃ of intensification per hour, rise to 35~36 ℃, steady temperature is felt like jelly and is fallen down to tobacco leaf; Then temperature is risen to 38~39 ℃, steady temperature is to the full flavescence of tobacco leaf, reach pornographic movie blue veins, be warming up to again 42 ℃, steady temperature shifts to an earlier date hydrofuge for 10~15 hours, the flavescence time is held general bottom leaf 60~72 hours, middle leaf 48~60 hours, upper leaf 36~48 hours, then heat up and proceed to fixation stage.It is 35 ℃ to 42 ℃ that this stage requires temperature range, overall 40 ~ 60 hours consuming time.
Fixation stage: after tobacco leaf reaches pornographic movie blue veins, blade and feels like jelly, with the speed of 1 ℃ of heating up for every 2~3 hours, barn temperature is risen to 45~48 ℃, the steady temperature of banking fire promotes the flavescence of cigarette muscle for 18 hours, is baked to tobacco leaf and changes and reach pornographic movie, yellow muscle, little reel; Then be warming up to 50~52 ℃, be baked to tobacco leaf and hook sharp crimping parent roll, be warming up to 54~55 ℃ of steady temperature and heat up again above for 12 hours, reduce the positive and negative aberration of tobacco leaf and promote tobacco leaf roasting fragrant.It is 45 ℃ ~ 55 ℃ that this stage requires temperature range, about 35 hours of used time.
Drying muscle stage: more than tobacco leaf reaches and rapidly dry-bulb temperature risen to 60 degree after fixation requirement, the highlyest can not surpass 68 ℃, wet-bulb temperature is the highest is no more than 43 ℃, is generally 39~42 ℃, is baked to cigarette muscle absolutely dry, is generally 30~40 hours.It is 65 ℃ of left and right that drying muscle stage tobacco leaf requires temperature, approximately 35 hours consuming time.
According to above-mentioned analysis, this baking system first order barn is drying muscle stage barn, second level barn is fixation stage barn, third level barn is changing yellow stage barn, first new air enters first order drying muscle stage barn by heat pump heating system Heat of Formation air, waste heat air sinks to flowing into second level fixation stage barn by utilidor, all the other hot-airs sink and through utilidor, flow into third level changing yellow stage barn again, front two-stage barn needs the heat time to be about 35 hours, after system introducing hot-air 35 hours, temperature control system cuts off heat pump heating system power supply automatically, cut off heated air source.Now, the air exhauster of second and third grade of barn is still in work, and final hot-air stays in third level barn substantially, closes third level barn exhaust outlet in good time, and the steady temperature of time delay was to 55 hours.So temperature control and timing system are made as 65 ℃ ~ 68 ℃ by preset reference temperature, it is 38 hours that timing system is set initial time.
Certainly, be more than concrete exemplary applications of the present invention, the present invention also has other embodiment, and all employings are equal to the technical scheme of replacement or equivalent transformation formation, within all dropping on protection domain of the presently claimed invention.

Claims (9)

1. a heat classification cycle control method for air energy tobacco roasting system, is characterized in that: it adopts multi-point temperature measurement control system and timing control system to combine; Described multi-point temperature measurement control system main program comprise that initialization subroutine and the interrupt service routine of system, interrupt service routine comprise that again multi-point temp detection, key scan, temperature show, temperature is controlled, warning subprogram; Described timing control system adopts timer T0 to interrupt, and stopwatch uses timer T1 to interrupt; The main program recursive call display subroutine of described timing control system, warning subprogram, keyboard scan subprogram.
2. the heat classification cycle control method of air energy tobacco roasting system according to claim 1, it is characterized in that: described multi-point temperature measurement control system is undertaken by agreement being arranged on the various operations of the temperature sensor in barn, plural temperature sensor is connected to the different pins of single-chip microcomputer, by design control algolithm, multipoint acquisition temperature value is averaged, and send into demonstration fracture, can realize multi-point temperature measurement.
3. the heat classification cycle control method of air energy tobacco roasting system according to claim 2, is characterized in that: the control of described multi-point temperature measurement control system to temperature, and only need to be by realizing the control of relay on-off.
4. the heat classification cycle control method of air energy tobacco roasting system according to claim 1, is characterized in that: in described timing control system, when time timing is to setting-up time, proceed to warning subprogram; When Pause key is pressed, timing pause TP, waits for and again presses recovery timing.
5. one kind adopts the tobacco roasting system control device of method as claimed in claim 1, comprise barn (1), air inlet at barn (1) is provided with air exhauster (2), it is characterized in that: described air exhauster (2) is connected with source pump chamber (4) by least one hot-air utilidor (3), described source pump chamber (4) is controlled by solid-state relay (5), described solid-state relay (5) is controlled by relay drive circuit (6), described relay drive circuit (6) connects single-chip microcomputer one (7) and single-chip microcomputer two (8) and accepts the instruction of these two single-chip microcomputers, described single-chip microcomputer two (8) be arranged on temperature sensor (9) in barn (1) and be connected and receive its transducing signal.
6. tobacco roasting system control device according to claim 5, is characterized in that: described single-chip microcomputer one (7) and single-chip microcomputer two (8) are provided with keyboard that can input message, and wherein the keyboard of single-chip microcomputer one (8) is used for arranging the ticket reserving time.
7. tobacco roasting system control device according to claim 6, is characterized in that: described single-chip microcomputer one (7) and single-chip microcomputer two (8) are provided with warning piece and display unit.
8. tobacco roasting system control device according to claim 7, is characterized in that: described single-chip microcomputer one (7) and single-chip microcomputer two (8) are AT89C52 type single-chip microcomputer.
9. tobacco roasting system control device according to claim 5, it is characterized in that: the quantity of described temperature sensor (9) is more than two, and the model of temperature sensor (9) is DS18B20 sensor.
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Cited By (5)

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CN104256869A (en) * 2014-10-13 2015-01-07 淄博鲁鹰炊事机械总厂 Chestnut roasting machine
CN104680879A (en) * 2015-01-13 2015-06-03 中国烟草总公司职工进修学院 Method and system for simulating tobacco drying machine
CN104820447A (en) * 2014-01-30 2015-08-05 艾默生环境优化技术(苏州)有限公司 Temperature control system, flue cured tobacco house temperature control system and flue cured tobacco house temperature control method
CN104921285A (en) * 2015-05-11 2015-09-23 安徽中科自动化股份有限公司 Intelligent tobacco curing barn capable of roasting tobaccos by aid of air energy
CN113142631A (en) * 2021-01-07 2021-07-23 钟学能 A intelligent temperature control system for tobacco is dried

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CN113142631A (en) * 2021-01-07 2021-07-23 钟学能 A intelligent temperature control system for tobacco is dried

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Effective date of registration: 20201023

Address after: No.7, South Wuxiang, Rongsheng street, Dongmeng community, Chengguan Town, Debao County, Baise City, Guangxi Zhuang Autonomous Region

Patentee after: Jinmin tobacco farmers' Professional Cooperative in Debao County

Address before: 550025 science and Technology Department, north campus, Guizhou University, Huaxi, Guizhou, China

Patentee before: Guizhou University