CN104825052A - Temperature-adjustable intelligent heater and control method therefor - Google Patents
Temperature-adjustable intelligent heater and control method therefor Download PDFInfo
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Abstract
The invention discloses a temperature-adjustable intelligent heater. The temperature-adjustable intelligent heater comprises a man-machine interface module, a temperature measurement module, a control module and an output power control module, wherein the man-machine interface module is used for setting constant temperature and displaying water temperature; the temperature measurement module is used for measuring the water temperature and sending temperature data to the control module; the control module is used for receiving the temperature data of the temperature control module, performing variable parameter PID computation to get heating power PWM data and sending the heating power PWM data to the output power control module; the output power control module is used for heating water and controlling the water temperature. The temperature-adjustable intelligent heater adopts the variable parameter PID computation; according to the heating time of different temperature control heating elements, the water temperature is precisely controlled at any temperature between room temperature and a boiling temperature, and the temperature deviation is controlled within 1.5 DEG C, and the heater is fast in heating and warming and precise in temperature control, so that thermal overshoot during the heating process is effectively prevented.
Description
Technical field
The invention belongs to the technical field of heater in household electrical appliance, be specifically related to a kind of temperature adjustable intelligent heater and control method thereof.
Background technology
Electric kettle as the most frequently used household electrical appliance, application and extensively, the function such as can be used for the brewing of baby formula milk powder, family expenses are made tea.At present, widely used electric kettle mainly adopts power heating pipe to heat water temperature, utilize temperature sensitive switch auto-breaking, thus realize controlling water temperature, with the water temperature that the family expenses sphere of life needs adapting to us are different, such as: 40 degree be used for fruit juice brew, 50 degree, 60 degree for the brewing of baby formulas milk powder, 70 degree for the brewing of coffee, 90 degree for making tea.Formula milk substituting as breast milk, has strict requirement when brewing to water temperature, water temperature over-high or too lowly all can cause the loss of milk powder nutritional labeling, the body development affecting infant and nutrient health level.
Current people mainly adopt following 2 kinds of methods to reconstituting of baby formula milk powder: 1, directly add boiling water with cold boiling water and reconstitute, or cooled by boiling water, then utilize the sense organ of people (the back of the hand or mouth) to carry out perception to temperature.2, milk dissolving device is adopted to carry out pouring milk powder.
When formula milk and warm water rush pair, temperature is inaccurate will cause the loss of the nutrition of milk powder, existingly rushes milk method, has the following disadvantages:
1, manually try temperature, this method brews milk powder, and water temperature height is by individual's sensation, and deviation is large, and troublesome poeration, the stand-by period is long, and neither science is also inaccurate, accidentally also can scald.
2, milk dissolving device rushes milk, and at present for method or the analog circuit temperature control of the milk dissolving device employing mechanical temperature control type in infant market, constant temperature effect is bad, and temperature deviation is larger.
3, also there is no that a can to realize arbitrary temp (below boiling point) adjustable in the market, and can the Multipurpose electric kettle of Fast Heating, accurately constant temperature or milk dissolving device.
4, in order to suitably be reconstituted temperature, the required stand-by period is long.
Summary of the invention
The object of the invention is to solve the technical problem that above-mentioned electric kettle temperature control is inaccurate, heating-up temperature is fixing, the temperature adjustable intelligent heater that a kind of accuracy of temperature control is high, heating-up temperature can set arbitrarily is provided.
In order to solve the problem, the present invention is achieved by following technical scheme:
The Intelligent heater that temperature of the present invention is adjustable, comprises human-machine interface module, temperature-measuring module, control module and output power module, and described human-machine interface module is for setting the steady temperature of water;
Described control module is for receiving the temperature data of temperature-measuring module, and carry out variable parameter PID computing with the steady temperature data of setting, obtain heating power pulse width modulation (PWM) data, and export heating power PWM data to output power module; The parameter of described variable parameter PID computing comprises heat temperature raising pid parameter and constant temperature pid parameter; Described output power module is used for heating water.
Further, in described heat temperature raising pid parameter, proportionality coefficient is 12 ~ 15, preferably 14, and integral coefficient is 0.2 ~ 0.5, preferably 0.3; Differential coefficient is 0; In described constant temperature pid parameter, proportionality coefficient is 3 ~ 5, preferably 4; Integral coefficient is 0.1 ~ 0.2, preferably 0.1; Differential coefficient is 1.5 ~ 3, preferably 2.
Further, described human-machine interface module comprises for the button of logging data and the display unit for displays temperature data, conveniently revises steady temperature at any time, and by the temperature of periodic refreshing water, facilitates user to observe temperature data.
Further, described output power module comprises photo-coupler, controllable silicon and heating element heater;
The ON time of the heating power PWM Data Control photo-coupler that described control module exports, thus control the time of controlled silicon conducting, thus control the heat time of heating element heater; Described controllable silicon is for controlling heating element heater energising or power-off;
Described heating element heater is used for release heat, heating water.
Further, described temperature-measuring module comprises temperature sensor, converts the translation circuit of voltage signal to and voltage analog signal is converted to the A/D converter of data signal for the signal of telecommunication detected by sensor.
Further, described control module comprises microcontroller, pid algorithm unit and output temperature control unit.
A control method for the Intelligent heater that temperature is adjustable, its step comprises:
(1), by human-machine interface module, setting steady temperature;
(2), by the temperature of control temperature measurement module Timing measurement water, and the temperature data of water is transferred to control module;
(3), control module receives the current temperature data of water, variable parameter PID computing is carried out with the steady temperature set in step (1), the variable element of described variable parameter PID computing comprises heat temperature raising pid parameter and constant temperature pid parameter, and described control module passes through Q
x=Cm Δ T calculating water is heated to the energy required for design temperature, and wherein, C is that specific heat of water holds, and m is the quality of water, and △ T is the temperature difference; Pass through
calculate heating energy value, wherein q
ifor the dutycycle of pulse width modulation, P
0for the rated power of heating element heater, Δ t is the duration of pulse width modulation output time sheet;
If W is lower than water intensification institute energy requirement Q in heating energy value
x90%, adopt heat temperature raising pid parameter to carry out PID arithmetic;
If W is higher than water intensification institute energy requirement Q in heating energy value
x90%, adopt constant temperature pid parameter to carry out PID arithmetic;
If the difference Δ T of the constant temperature angle value of the current temperature of water and setting is less than 4 degrees Celsius, constant temperature pid parameter is adopted to carry out PID arithmetic;
(4), by PID arithmetic obtain heating power pulse width modulation data, and timing exports heating power pulse width modulation data to output power module;
(5), output power module receives heating power pulse width modulation data, the time of control heating, feedwater heating.
Further, in described heat temperature raising pid parameter, proportionality coefficient is 12 ~ 15, preferably 14, and integral coefficient is 0.2 ~ 0.4, preferably 0.3, differential coefficient is 0; In described constant temperature pid parameter, proportionality coefficient is 3 ~ 5, preferably 4, and integral coefficient is 0.1 ~ 0.2, preferably 0.1, differential coefficient is 1.5 ~ 3, preferably 2.
Further, because the variations in temperature of water is relatively slow, and temperature-measuring module measuring tempeature is very fast, in described step (3), described control module receives the temperature data of temperature-measuring module transmission, carry out PID arithmetic by the temperature averages calculated in certain hour, calculate more accurate.
Further, described control module adopts and removes the temperature data being worth arithmetic mean of instantaneous value filter method and limit filtration method process water most, described to remove to be worth most arithmetic mean of instantaneous value filter method be that the maximum of the temperature data received continuously in certain hour and minimum of a value are removed by control module, then the mean value of accounting temperature;
Described limit filtration method is that control module detects and given up by the temperature value receiving adjacent two temperature value gaps and be greater than 3.0 degrees Celsius, then the mean value of accounting temperature; Avoid the measure error because other reason causes and affect the accuracy of the water temperature of measurement, improving certainty of measurement.
Compared with prior art, the invention has the beneficial effects as follows:
The present invention adopts the cooperation of heat temperature raising pid parameter and constant temperature pid parameter to carry out variable parameter PID utilization, the heat time of heating element heater is controlled according to the different temperature difference, the temperature of water accurately can be controlled the arbitrary temp between room temperature to boiling temperature, temperature deviation controls in 1.5 degrees Celsius, and Discrete control of the present invention, when the temperature difference is larger, Fast Heating heats up, when the temperature difference is less, utilize constant temperature pid parameter, slow heat temperature raising, temperature controls precisely, effectively prevent the problem occurring hot overshoot in heating process, meet modern and brew different drinks, select the requirement of different water temperature, and do not need to be down to required water temperature from boiling temperature, save the time of wait, now boil existing use, brew effect better, more healthy.
Accompanying drawing explanation
Below in conjunction with accompanying drawing, the specific embodiment of the present invention is described in further detail, wherein:
Fig. 1 is the circuit block diagram of the adjustable Intelligent heater of temperature of the present invention;
Fig. 2 is the principle schematic of temperature-measuring module and control module in the adjustable Intelligent heater of temperature of the present invention;
Fig. 3 is the fundamental diagram of output power module in the adjustable Intelligent heater of temperature of the present invention;
Fig. 4 a is the main program control flow chart of the adjustable Intelligent heater of temperature of the present invention;
Fig. 4 b is the timer interruption handling procedure control flow chart of the adjustable Intelligent heater of temperature of the present invention;
Fig. 5 is that parameter PID control and integral _ divided PID algorithm effect curve (design temperature is 50 degrees Celsius) are determined in certain parameter PID control, second.
In figure: 1-human-machine interface module, 2-temperature-measuring module, 3-control module, 4-output power module, 41-photo-coupler, 42-controllable silicon, 43-heating element heater, 5-power supply.
Detailed description of the invention
Below in conjunction with accompanying drawing, the preferred embodiments of the present invention are described, should be appreciated that preferred embodiment described herein is only for instruction and explanation of the present invention, is not intended to limit the present invention.
As shown in Fig. 1 ~ Fig. 5, the Intelligent heater that temperature of the present invention is adjustable, comprises human-machine interface module, temperature-measuring module, control module, output power module and power supply.
Described human-machine interface module comprises button and display unit, for setting the steady temperature of water and showing the temperature data of water.
As shown in Figure 2, described in described temperature-measuring module, temperature-measuring module comprises temperature sensor, translation circuit and A/D converter, the temperature of current water measured by described temperature sensor, the temperature transition measured is become the signal of telecommunication by temperature sensor, corresponding voltage signal is converted to again by translation circuit, A/D converter converts voltage signal to data signal by analog quantity, and this data signal is sent to control module.
Described control module comprises microcontroller, PID arithmetic unit and output temperature control unit; Described microcontroller receives the temperature data of temperature-measuring module, by corresponding conversion relation, data is converted into corresponding real temperature, is calculated the PWM data controlling power by variable parameter PID computing, and controls power output module by PWM.
The parameter of described variable parameter PID computing has two groups, is respectively heat temperature raising pid parameter and constant temperature pid parameter.
Described microcontroller passes through
Q
X＝CmΔT (1)
Calculating water is heated to the energy required for design temperature, and wherein in (1) formula, C is that specific heat of water holds, and m is the quality of water, and △ T is the temperature difference;
Described microcontroller passes through
Calculate heating energy value, wherein in (2) formula, q
ifor the dutycycle of pulse width modulation, P
0for the rated power of heating element heater, Δ t is the duration of pulse width modulation output time sheet; If W is lower than water intensification institute energy requirement Q in heating energy value
x90%, adopt heat temperature raising pid parameter to carry out PID arithmetic; If W is higher than water intensification institute energy requirement Q in heating energy value
x90%, or the current temperature of water is less than 4 degrees Celsius with the difference Δ T of setting constant temperature angle value, adopts constant temperature pid parameter to carry out PID arithmetic.
As shown in Figure 3, described output power module comprises photo-coupler 41, controllable silicon 42 and heating element heater 43; Described photo-coupler 41 is for controlling the time of controllable silicon 42 conducting; Described controllable silicon 42 is energized or power-off for controlling heating element heater 43; Described heating element heater 43 for release heat, heating water.Described photo-coupler 41 realizes Phototube Coupling, microcontroller is according to the calculating of pid algorithm, change the pwm signal exported, namely the pulse signal of the high level of certain dutycycle is had, when pwm signal is high level, photo-coupler 41 conducting, after photo-coupler 41 conducting, make controllable silicon 42 conducting, heating element heater 43 electrified regulation.Otherwise during PWM low level, photo-coupler 41 and controllable silicon 42 are closed, heating element heater 43 no-voltage.Like this, in same timeslice, by controlling the length of conduction time, just can control the power heated.
Illustrate PWM control principle:
Such as 1000W heater electrified regulation, if with 1S (1 second) for chronomere (timeslice), the full level of PWM was 128 (timeslice is divided into 128 parts).
Current PWM value is 64, and so dutycycle is (64/128) * 100%=50%, is that is energized 0.5 second every 1 second, and in theory, the actual power of 1000W heating just becomes 500W.
When current PWM value is 0, dutycycle is (0/128) * 100%=0%, and each second does not have conduction time, and the heating actual power of 1000W is 0W.
By that analogy, when PWM value is 8, actual power is 1000W* (8/128) * 100%=62.5W.
The change per second due to water temperature is relatively slow, and the speed of temperature sensor sampling is very fast, up to ten thousand temperature of can sampling per second, described microcontroller receives the temperature data that temperature sensor transmits, adopt the temperature data going to be worth arithmetic mean of instantaneous value filter method process sampling most, the maximum of sample temperature and minimum of a value that connect several times are removed, then calculates its mean value, decrease the measure error because other factors causes and affect the accuracy of the temperature measuring water.
Described microcontroller also adopts limit filtration algorithm process to the temperature data received, the temperature data of neighbouring sample is compared, if difference is greater than 3.0 degrees Celsius, this temperature data is abandoned, decrease the measure error because other factors causes and affect the accuracy of temperature measuring water, thus making the water temperature of sampling more accurate.
For typical PID controller, its output expression formula is:
Wherein, K
pproportionality coefficient, K
iintegral coefficient, K
dbe differential coefficient, controlled quentity controlled variable is u (k) is that deviation is e (k).In formula, u (k) is PWM value, the difference that deviation e (k) is actual value and setting value, the difference that e (k-1) is set temperature value during a front temperature sampling and actual temperature value.
Pid parameter is adjusted
(1) Proportional coefficient K
pimpact on systematic function:
Proportionality coefficient strengthens, and makes being active in one's movements of system, and speed is accelerated, Proportional coefficient K
ptime too large, system can be tending towards unstable.K
ptoo little, the slow in one's movements of system can be made again.
(2) integration control parameter K
iimpact on systematic function:
Steady-state error is eliminated in the effect of integration, improves the control accuracy of system.Integral coefficient K
igreatly, integral action is strong, accelerates the elimination process of steady-state error, and the time of eliminating needed for deviation is also shorter, but integral action is excessively strong, can make likely to produce vibration in the system transitions time.
(3) differential controling parameters K
dimpact on systematic function:
Differential parameter can improve dynamic characteristic, differential coefficient K
dtime bigger than normal, suppress the effect of change of error stronger.K
dtime less than normal, the effect of resistance change of error is more weak.Only has K
dsuitable, overshoot just can be made less, shorten regulating time.
For a traditional PID controller, only have and work as K
p, K
i, K
dunder the prerequisite that these three Selecting parameter are suitable, the transient process of system just can be made to reach fast, steadily and requirement accurately.But prerequisite is that controlled variable change is little, little by disturbance, once these three parameter tunings get off, just no longer changes.But our controlled variable is large or by strong jamming once the amount of changing, traditional parameter PID controller of determining just is difficult to ensure control accuracy and stability, there will be overshoot, water temperature is controlled to there will be hot overshoot phenomenon (as certain parameter PID control effects curve in Fig. 5), or heating very slow (as in Fig. 5, second determines parameter PID control effects curve), affects the efficiency of heating surface.
As shown in Figure 5, certain parameter PID control effects curve, shift PID control effects curve and second determine the comparison diagram of parameter PID control effects curve, three groups of pid parameters, hot overshoot is all created after heating temperatures to setting value, and temperature sloping portion heater stops heating, water temperature to be all by reaching set temperature value from cooling.Time general room temperature (26 DEG C), the water temperature self cooled time is 7-18 minute.If winter, room temperature (5 DEG C) water temperature was faster from cool time.Adopt room temperature (26 DEG C) when this is measured, the time selecting record is 200 (s).
This measurement have selected two groups and determines parameter PID control temperature effect curve, and certain parameter PID controls, and the heat time is shorter, and hot overshoot is excessive, and water temperature is longer from the cooling time cycle.Second determines parameter PID controls, and hot overshoot is less, but firing rate is mild, and heating cycle is longer.
The present invention adopts integral _ divided PID algorithm method.To thermostatic process, being divided into two stages to water temp. heating, in order to ensure very fast firing rate during heating, increasing proportion adjustment parameter K
p, use heat temperature raising pid parameter, wherein K
p=14, K
i=0.3, K
d=0; When close to set temperature value, adopt constant temperature pid parameter, wherein control K
p=4, K
i=0.1, K
d=2; Calculate PWM data, have firing rate faster, hot overshoot controls within 1.5 DEG C.
As shown in figures 4 a and 4b, in order to control accurately, the control program of temperature adjustable intelligent heater of the present invention comprises master control program and timer interruption control program, the temperature of described timer interruption control program control temperature sensor Timing measurement water and timing output PWM, thus timing controlled heating element heats.
The control method of described timer interruption handling procedure is:
(1) timer interruption handling procedure is provided with timer, time counting to setting value, the Current Temperatures of temperature sensor measurement water, and the temperature data of water is outputted in master control program;
(2) temperature sensor prepares sampling next time;
(3) time counting resets, and set temperature upgrades mark, and temperature is upgraded flag transmission to master control program;
(4) receive the PWM value that master control program exports, timing output PWM value to output power module, thus controls the heat time of heating element heater, and the display of redraw, timer interruption returns step (1).
The control method of described master control program is:
(1), startup self-detection, system initialization, transfer coefficient acquiescence constant temperature angle value;
(2), by the plus-minus of button, setting steady temperature, and shown by display screen;
(3), detect master control program whether have the temperature data receiving the water measured in timer interruption handling procedure, if do not receive new temperature data, return step (2), the temperature data of waiting timer interrupt handling routine; If have received new temperature data value, storage temperature value, and the temperature received from timer interruption handling procedure is upgraded mark removing;
(4) accounting temperature mean value, microcontroller receives temperature data, judges that whether they are different with the last temperature measured, difference, namely represent that temperature have updated, temperature number of times adds 1, the temperature number of times measured reaches the number of equipment in advance, the mean value of accounting temperature;
(5), during accounting temperature mean value, microcontroller adopts and goes to be worth arithmetic mean of instantaneous value filter method and limit filtration method most, described in go to be worth most and calculate that to state the mean filter be the maximum of the temperature value measured in a computing cycle and minimum of a value are removed; Calculate its mean value again; Described limit filtration method is made comparisons by the temperature value of adjacent twice measurement, if its difference is comparatively large, as being greater than 3.0 degrees Celsius, namely this temperature value is given up, with the average temperature value avoiding the measure error impact caused due to other factors to measure.
(6), microcontroller calculates gained temperature averages, variable parameter PID computing is carried out with the steady temperature set in step (1), the variable element of described variable parameter PID computing comprises heat temperature raising pid parameter and constant temperature pid parameter, in described heat temperature raising pid parameter, proportionality coefficient is 12 ~ 15, preferably 14; Integral coefficient is 0.2 ~ 0.5, preferably 0.3; Differential coefficient is 0; In described constant temperature pid parameter, proportionality coefficient is 3 ~ 5, preferably 4; Integral coefficient is 0.1 ~ 0.2, preferably 0.1; Differential coefficient is 1.5 ~ 3, preferably 2; Described control module passes through Q
x=Cm Δ T calculating water is heated to the energy required for design temperature, and wherein, C is that specific heat of water holds, and m is the quality of water, and △ T is the temperature difference; Pass through
calculate heating energy value, wherein q
ifor the dutycycle of pulse width modulation, P
0for heater element rated power, Δ t is the duration of pulse width modulation output time sheet; If W is lower than water intensification institute energy requirement Q in heating energy value
x90%, adopt the computing of heat temperature raising pid parameter; If W is higher than water intensification institute energy requirement Q in heating energy value
x90% or temperature difference △ T be less than 4 degrees Celsius, adopt the computing of constant temperature pid parameter.
(7), by PID arithmetic obtain heating power PWM data, and export heating power PWM (pulse width modulation) data to timer interrupt routine.
In described main program, artificially revise constant temperature angle value at any time, the selection that user is more humane is provided.
Can process the temperature data of the every sub-sampling of Interruption handling procedure in time in order to ensure master control program, the maximum duration that master control program completes a complete cycle all must be less than the interval time that timer interrupt routine completes primary sample.
The present invention is by the PID arithmetic of variable element, by setting different pid parameters, heat temperature raising and two stages of constant temperature are divided into water temp. heating, when the temperature difference is larger, energy Fast heating water temp, when the temperature difference is less, constant heating water temperature, temperature controls accurately, effectively to prevent hot overshoot, and effectively improve the efficiency of heating surface, save the stand-by period.
Described in the present embodiment, other structure of temperature adjustable intelligent heater is see prior art.
The above, it is only preferred embodiment of the present invention, not any pro forma restriction is done to the present invention, therefore everyly do not depart from technical solution of the present invention content, the any amendment done above embodiment according to technical spirit of the present invention, equivalent variations and modification, all still belong in the scope of technical solution of the present invention.
Claims (10)
1. the Intelligent heater that temperature is adjustable, comprises human-machine interface module, temperature-measuring module, control module and output power module, it is characterized in that:
Described human-machine interface module is for setting the steady temperature of water;
Described control module is for receiving the temperature data of temperature-measuring module, and carry out variable parameter PID computing with the steady temperature data of setting, obtain heating power pulse width modulation data, and export heating power pulse width modulation data to output power module; The parameter of described variable parameter PID computing comprises heat temperature raising pid parameter and constant temperature pid parameter;
Described output power module is used for heating water.
2. the Intelligent heater that temperature is adjustable according to claim 1, is characterized in that: in described heat temperature raising pid parameter, proportionality coefficient is 12 ~ 15, and integral coefficient is 0.2 ~ 0.5, and differential coefficient is 0; In described constant temperature pid parameter, proportionality coefficient is 3 ~ 5, and integral coefficient is 0.1 ~ 0.2, and differential coefficient is 1.5 ~ 3.
3. the Intelligent heater that temperature is adjustable according to claim 2, is characterized in that: in described heat temperature raising pid parameter, proportionality coefficient is 14, and integral coefficient is 0.3, and differential coefficient is 0; In described constant temperature pid parameter, proportionality coefficient is 4, and integral coefficient is 0.1, and differential coefficient is 2.
4. the Intelligent heater that temperature is adjustable according to claim 1, is characterized in that: described human-machine interface module comprises for the button of logging data and the display unit for displays temperature data.
5. the Intelligent heater that temperature is adjustable according to claim 3, is characterized in that: described output power module comprises photo-coupler, controllable silicon and heating element heater;
The ON time of the heating power pulse width modulation Data Control photo-coupler that described control module exports, thus control the time of controlled silicon conducting;
Described controllable silicon is for controlling heating element heater energising or power-off;
Described heating element heater is used for release heat, heating water.
6. the Intelligent heater that temperature is adjustable according to claim 3, is characterized in that: described temperature-measuring module comprises temperature sensor, converts the translation circuit of voltage signal to and voltage analog signal is converted to the A/D converter of data signal for the signal of telecommunication detected by sensor.
7. the Intelligent heater that temperature is adjustable according to any one of claim 1 to 6, is characterized in that: described control module comprises microcontroller, pid algorithm unit and output temperature control unit.
8. the control method of the Intelligent heater that temperature is adjustable as described in any one of claim 1 to 7, its step comprises:
(1), by human-machine interface module, setting steady temperature;
(2), by the temperature of control temperature measurement module Timing measurement water, and the temperature data of water is transferred to control module;
(3), control module receives the current temperature data of water, variable parameter PID computing is carried out with the steady temperature set in step (1), the variable element of described variable parameter PID computing comprises heat temperature raising pid parameter and constant temperature pid parameter, and described control module passes through Q
x=Cm Δ T calculating water is heated to the energy required for design temperature, and wherein, C is that specific heat of water holds, and m is the quality of water, and △ T is the temperature difference; Pass through
calculate heating energy value, wherein q
ifor the dutycycle of pulse width modulation, P
0for the rated power of heating element heater, Δ t is the duration of pulse width modulation output time sheet;
If W is lower than water intensification institute energy requirement Q in heating energy value
x90%, adopt heat temperature raising pid parameter to carry out PID arithmetic;
If W is higher than water intensification institute energy requirement Q in heating energy value
x90%, adopt constant temperature pid parameter to carry out PID arithmetic;
If the difference Δ T of the constant temperature angle value of the current temperature of water and setting is less than 4 degrees Celsius, constant temperature pid parameter is adopted to carry out PID arithmetic;
(4), by PID arithmetic obtain heating power pulse width modulation data, and timing exports heating power pulse width modulation data to output power module;
(5), output power module receives heating power pulse width modulation data, the time of control heating, feedwater heating.
9. the control method of the Intelligent heater that temperature is adjustable according to claim 8, it is characterized in that: in described heat temperature raising pid parameter, proportionality coefficient is 12 ~ 15, integral coefficient is 0.2 ~ 0.5, and differential coefficient is 0; In described constant temperature pid parameter, proportionality coefficient is 3 ~ 5, and integral coefficient is 0.1 ~ 0.2, and differential coefficient is 1.5 ~ 3.
10. the control method of the Intelligent heater that temperature is adjustable according to claim 8, it is characterized in that: in described step (3), described control module receives the temperature data of temperature-measuring module transmission, carries out PID arithmetic by the temperature averages calculated in certain hour;
Described control module adopts and removes the temperature data being worth arithmetic mean of instantaneous value filter method and limit filtration method process water most, described to remove to be worth most arithmetic mean of instantaneous value filter method be that the maximum of the temperature data received continuously in certain hour and minimum of a value are removed by control module, then the mean value of accounting temperature;
Described limit filtration method is that control module detects and given up by the temperature value receiving adjacent two temperature value gaps and be greater than 3.0 degrees Celsius, then the mean value of accounting temperature.
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| CN109462906A (en) * | 2018-12-26 | 2019-03-12 | 郑州科创电子有限公司 | Induction heating power DSP intelligence control system |
| CN110250908A (en) * | 2019-07-18 | 2019-09-20 | 金华瑞豪科技发展有限公司 | A kind of Intelligent electric heating kettle |
| CN110413024A (en) * | 2019-08-21 | 2019-11-05 | 苏州国科医疗科技发展有限公司 | Digital microcurrent-controlled temperature control system and method based on PID |
| CN110531118A (en) * | 2019-08-01 | 2019-12-03 | 广州晒帝智能科技有限公司 | A kind of multiple stage filtering method and device and equipment based on gyroscope acceleration |
| CN110955283A (en) * | 2019-12-03 | 2020-04-03 | 珠海格力电器股份有限公司 | Heating control method and device of cooking appliance, storage medium and cooking appliance |
| CN111487861A (en) * | 2020-04-20 | 2020-08-04 | 江苏金源腾峰换热设备有限公司 | Electric heater based on fuzzy PID temperature control method |
| CN111570389A (en) * | 2020-04-20 | 2020-08-25 | 深圳市洁盟清洗设备有限公司 | High-precision temperature control method of ultrasonic cleaning machine and ultrasonic cleaning machine |
| CN112155434A (en) * | 2020-08-19 | 2021-01-01 | 北京旷视科技有限公司 | Temperature control method, temperature control device, control equipment, storage medium and heater |
| CN112399652A (en) * | 2020-11-19 | 2021-02-23 | 宣城睿晖宣晟企业管理中心合伙企业(有限合伙) | Heating pipe control method and heating system |
| CN112617612A (en) * | 2020-12-10 | 2021-04-09 | 深圳市道中创新科技有限公司 | Brewing method and device, computer equipment and storage medium |
| CN113057498A (en) * | 2021-03-08 | 2021-07-02 | 福建东西乐活科技有限公司 | Method, terminal and equipment for controlling water temperature of coffee machine |
| CN113625801A (en) * | 2021-09-03 | 2021-11-09 | 罗定职业技术学院 | Temperature control method of heating furnace |
| CN113647835A (en) * | 2021-08-19 | 2021-11-16 | 珠海格力电器股份有限公司 | Method and device for judging abnormal reduction of power of household appliance and household appliance |
| CN114711627A (en) * | 2022-04-29 | 2022-07-08 | 佛山市顺德区美的饮水机制造有限公司 | Instant heating water dispenser, water outlet temperature control method and device thereof and storage medium |
| CN115167114A (en) * | 2022-08-18 | 2022-10-11 | 湖南炬神电子有限公司 | Constant temperature control method and system for electric heating sheet |
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| CN107290983A (en) * | 2016-04-01 | 2017-10-24 | 佛山市顺德区美的电热电器制造有限公司 | Temperature acquisition method, device, control method and the electric cooking pot of electric cooking pot |
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| CN106900086A (en) * | 2017-03-23 | 2017-06-27 | 福州丹诺西诚电子科技有限公司 | A kind of heating means and system |
| CN109381081A (en) * | 2017-08-04 | 2019-02-26 | 广东美的生活电器制造有限公司 | Food processor and its method for heating and controlling and device |
| CN109381081B (en) * | 2017-08-04 | 2022-02-01 | 广东美的生活电器制造有限公司 | Food processor and heating control method and device thereof |
| CN108594898A (en) * | 2018-04-26 | 2018-09-28 | 广东美的厨房电器制造有限公司 | Oven temperature control method, device and computer readable storage medium |
| CN108762342A (en) * | 2018-06-15 | 2018-11-06 | 上海卫星工程研究所 | A kind of precise temperature control method based on PWM technologies |
| CN109462906A (en) * | 2018-12-26 | 2019-03-12 | 郑州科创电子有限公司 | Induction heating power DSP intelligence control system |
| CN110250908A (en) * | 2019-07-18 | 2019-09-20 | 金华瑞豪科技发展有限公司 | A kind of Intelligent electric heating kettle |
| CN110531118A (en) * | 2019-08-01 | 2019-12-03 | 广州晒帝智能科技有限公司 | A kind of multiple stage filtering method and device and equipment based on gyroscope acceleration |
| CN110413024A (en) * | 2019-08-21 | 2019-11-05 | 苏州国科医疗科技发展有限公司 | Digital microcurrent-controlled temperature control system and method based on PID |
| CN110955283A (en) * | 2019-12-03 | 2020-04-03 | 珠海格力电器股份有限公司 | Heating control method and device of cooking appliance, storage medium and cooking appliance |
| CN111570389A (en) * | 2020-04-20 | 2020-08-25 | 深圳市洁盟清洗设备有限公司 | High-precision temperature control method of ultrasonic cleaning machine and ultrasonic cleaning machine |
| CN111487861A (en) * | 2020-04-20 | 2020-08-04 | 江苏金源腾峰换热设备有限公司 | Electric heater based on fuzzy PID temperature control method |
| CN112155434A (en) * | 2020-08-19 | 2021-01-01 | 北京旷视科技有限公司 | Temperature control method, temperature control device, control equipment, storage medium and heater |
| CN112155434B (en) * | 2020-08-19 | 2022-03-08 | 北京旷视科技有限公司 | Temperature control method, temperature control device, control equipment, storage medium and heater |
| CN112399652A (en) * | 2020-11-19 | 2021-02-23 | 宣城睿晖宣晟企业管理中心合伙企业(有限合伙) | Heating pipe control method and heating system |
| CN112617612A (en) * | 2020-12-10 | 2021-04-09 | 深圳市道中创新科技有限公司 | Brewing method and device, computer equipment and storage medium |
| CN113057498A (en) * | 2021-03-08 | 2021-07-02 | 福建东西乐活科技有限公司 | Method, terminal and equipment for controlling water temperature of coffee machine |
| CN113647835A (en) * | 2021-08-19 | 2021-11-16 | 珠海格力电器股份有限公司 | Method and device for judging abnormal reduction of power of household appliance and household appliance |
| CN113625801A (en) * | 2021-09-03 | 2021-11-09 | 罗定职业技术学院 | Temperature control method of heating furnace |
| CN114711627A (en) * | 2022-04-29 | 2022-07-08 | 佛山市顺德区美的饮水机制造有限公司 | Instant heating water dispenser, water outlet temperature control method and device thereof and storage medium |
| CN114711627B (en) * | 2022-04-29 | 2024-02-20 | 佛山市顺德区美的饮水机制造有限公司 | Instant heating water dispenser, water outlet temperature control method and device thereof and storage medium |
| CN115167114A (en) * | 2022-08-18 | 2022-10-11 | 湖南炬神电子有限公司 | Constant temperature control method and system for electric heating sheet |
| CN115167114B (en) * | 2022-08-18 | 2024-09-20 | 湖南炬神电子有限公司 | Constant temperature control method and system for electric heating sheet |
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Application publication date: 20150812 |