CN103984375B - Temperature control system based on DSP and temperature sensor control and control method thereof - Google Patents
Temperature control system based on DSP and temperature sensor control and control method thereof Download PDFInfo
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- CN103984375B CN103984375B CN201410159430.8A CN201410159430A CN103984375B CN 103984375 B CN103984375 B CN 103984375B CN 201410159430 A CN201410159430 A CN 201410159430A CN 103984375 B CN103984375 B CN 103984375B
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- 238000010438 heat treatment Methods 0.000 claims abstract description 32
- 238000006243 chemical reaction Methods 0.000 claims description 12
- 230000005540 biological transmission Effects 0.000 claims description 6
- 238000012545 processing Methods 0.000 claims description 4
- 230000005611 electricity Effects 0.000 claims description 2
- 238000012544 monitoring process Methods 0.000 abstract description 2
- 230000004907 flux Effects 0.000 abstract 3
- 239000012530 fluid Substances 0.000 description 3
- 238000005259 measurement Methods 0.000 description 2
- 238000000137 annealing Methods 0.000 description 1
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Abstract
The invention discloses a temperature control system based on a data signal processor (DSP) and temperature sensor control and a control method thereof, and belongs to the technical field of temperature control. When isothermal heating control is adopted, the system comprises the DSP, a power supply, a temperature sensor, a control parameter input device and a parameter output recording controller. When heat flux heating control is adopted, a pulse width converter is additionally arranged on the basis of the original system. According to the temperature control system, temperature and heat flux density input setting is taken into consideration, and the functions of monitoring temperature of a controlled object and heating flux in real time and recording heating power are achieved.
Description
Technical field
The present invention relates to a kind of be based on dsp(digital signal processor) and temperature sensor control temperature control system and
Its control method, belongs to technical field of temperature control.
Background technology
Heating system and its temperature control system are widely used in various different equipment.For example: single crystal growing furnace, annealing
It is required in the equipment such as stove, electric baker, heat-treatment furnace using heating and temperature control system.The production of product and processing technique will
Seek the temperature control of heating system within the specific limits.Accurately temperature controlling range ensure that the qualification rate of product.Controlled
Warming-up device temperature rising during not only controlled, but also will reach set temperature value after automatic feedback information
To warming-up device, with the timely heating amount that adjusts so that warming-up device keeping temperature in certain period of time is constant, or certain
Temperature control precision in the range of automatically adjust.Additionally, except the demand of equipment or the control of product isothermal, the also heating amount such as presence
The demand controlling, that is, in the range of certain time, the heating amount that equipment provides is constant, its technical difficulty with respect to
Isothermal heating will complexity.By equitemperature and etc. heat flow heating and its control and combine, voluntarily can be selected according to the demand of user
A kind of new heat and control system will have certain application market.
Content of the invention
The invention provides a kind of temperature control system based on dsp and temperature sensor control and its control method.
The present invention is to solve its technical problem to adopt the following technical scheme that
A kind of temperature control system being controlled based on dsp and temperature sensor, including dsp, power supply, temperature sensor, control
Parameter loader processed and parameter output recording controller, wherein control parameter loader, dsp and parameter output recording controller are suitable
Sequence connects, and dsp and power supply connect, and temperature sensor is arranged in controlled device, and power supply is connected with controlled device, in controlled device
Temperature sensor be connected with the ad port of dsp by data wire.
A kind of temperature control system being controlled based on dsp and temperature sensor, including dsp, power supply, control parameter input
Device, parameter output recording controller, temperature sensor and pulse width conversion device, temperature sensor is arranged in controlled device, controls
Parameter loader, dsp and parameter output recording controller are linked in sequence, and the pwm port of dsp is connected with pulse width conversion device, controlled
Temperature sensor on object is connected with the ad port of dsp by data wire, and pulse width conversion device is connected with power supply to control
Power supply, power supply is connected with controlled device.
The control method of the temperature control system being controlled based on dsp and temperature sensor is it is characterised in that include following walking
Rapid:
(1) control temperature, the temperature of controlled device when adopting isothermal heating to control, is inputted first by control parameter loader
Control accuracy value, and switch on power；Temperature sensor signal in collection controlled device, signal is turned by the ad module of dsp
Change and compare with by the temperature value that control parameter loader inputs, produce and feed back signal to alternating current power supply；
(2) if the temperature value of collection is higher than the control accuracy sum of the controls temperature of controlled device and temperature, allow dsp
Send the instruction of deenergization；If the temperature value of collection be less than the controls temperature of controlled device and temperature control accuracy it
Difference, then allow dsp send the instruction switching on power.
The control method of the temperature control system being controlled based on dsp and temperature sensor is it is characterised in that include following walking
Rapid:
(1) adopt heat flow computer heating control when, first by control parameter loader input controlled device control temperature,
Pid control law and temperature control precision value；Dsp is signaled to by the pwm port of dsp after receiving control input parameter
Pulse width conversion device, switches on power under 10% dutycycle；
(2) temperature sensor signal in collection controlled device, signal is joined with by control by the ad module conversion of dsp
The temperature value of number loader input compares, and produces and feeds back signal to dsp；(3) if the temperature value of collection is higher than controlled device
Control the control accuracy sum of temperature and temperature, then allow dsp send the instruction reducing dutycycle, given by the pwm port transmission of dsp
Pulse width conversion device is with the dutycycle of regulation power supply；If the temperature value of collection is less than the control temperature of controlled device and the control of temperature
The difference of precision processed, then allow dsp send increase dutycycle instruction, by dsp pwm port transmission to pulse width conversion device to adjust electricity
The dutycycle in source；
(4) when controlled device temperature control is in the range of the control accuracy that control parameter loader inputs, dsp sends instruction
By pwm port transmission to pulse width conversion device to lock the dutycycle of power supply, and recording controller record is exported now by parameter
Duty cycle information, reach the heat flows such as controlled device heating；
(5) once the dutycycle locking of power supply, controlled device such as enters at the state of heat flow heating, until artificial cut off
Power supply stops heating.
Beneficial effects of the present invention are as follows:
This system does not have the device of any adjustment voltage or electric current, simplifies control system, reduces the one-tenth of system constructing
This；The temperature signal feeding back to processor is to be obtained by multipoint acquisition, it is to avoid local temperature sensors error is excessive and produces
Temperature erroneous judgement；This faster system response, sample frequency is high, can not only realize the constant control of heating-up temperature, and can be
Temperature reach after setting value etc. heat flow computer heating control；Pulse width modulation (pwm) module and ratio using dsp processor
Integral differential (pid) control law is adjusted to the dutycycle of power input and can lock, and the heat flow such as realizes and heats control
System；This system not only has temperature concurrently and heat flow density input sets, and the temperature to control target and heating hot-fluid are real-time
Monitoring, heating power writing function.
Brief description
Fig. 1 be based on dsp and temperature sensor control etc. temperature control system sketch.
Fig. 2 be based on dsp and temperature sensor control etc. heat flow control system sketch.
Fig. 3 is a kind of flow chart of embodiment of isothermal control of the present invention.
Fig. 4 be the present invention etc. heat flow control a kind of embodiment flow chart.
Specific embodiment
Below in conjunction with the accompanying drawings the invention is described in further details.
With dsp tms320 lf2407 for microprocessor as control core, gather with multipoint temperature sensor and make even
It is respectively formed feedback signal, contrasted with user preset controlling value by feeding back signal, right in the range of certain control accuracy
Heating-up temperature or heating hot-fluid both mode of heatings are automatically controlled, and have temperature and heat flow density input setting, temperature concurrently
Degree and the function such as hot-fluid monitor in real time, heating power record.
Deng temperature control system: using the input of 220v alternating current power supply, the ad(digital-to-analogue of dsp processor) module port treatment temperature
The temperature signal of sensor acquisition, the input value of temperature signal and control parameter loader is compared, and produces and feeds back signal to dsp
Control the switch of alternating current power supply, switch on and off control system temperature through switch.
Etc. heat flow control system: on the basis of waiting temperature control system, increase control system input voltage, the prison of electric current
Control, realizes the power input dutycycle locking after controlling temperature to reach design temperature by the pwm module of dsp processor, real
Now etc. heat flow is heated control.
The concrete mode that controlled device is implemented with isothermal control is as shown in Figure 1.To be controlled by control parameter loader
The control accuracy requirement of the control temperature of object and control temperature is input in control system；K-type thermocouple temperature sensor will
The temperature signal at temperature sensor in controlled device is delivered to the ad port of dsp；Dsp is by the data of ad port processing and control
The control parameter that parameter loader processed is input to dsp carries out contrasting, judge after send the instruction of power supply and power-off to power supply；At this
In all control process, the parameter such as time that power supply is powered, temperature of controlled device can be controlled by parameter output record in real time
Device is recorded.The concrete control flow of this embodiment is as shown in figure 3, the t0 of in figure represents the control temperature of controlled device, δ t
It is the control accuracy of temperature, this two controlled quentity controlled variables are all inputted by control parameter loader；T represents and is sensed by K-type electric thermo-couple temperature
The temperature of the controlled device of device measurement.
The concrete mode that the heat flows such as controlled device enforcement are controlled is as shown in Figure 2.Will be by by control parameter loader
The control accuracy requirement of the control temperature of control object and control temperature is input in control system；K-type electric thermo-couple temperature senses
Temperature signal at temperature sensor in controlled device is delivered to the ad port of dsp by device；Dsp is by the data of ad port processing
The control parameter being input to dsp with control parameter loader carries out contrasting, judge after pulsewidth be combined by the pwm port of dsp turn
Parallel operation reaches preset value with suitable dutycycle up to the control temperature of controlled device and precision to power supply；Locking dutycycle with etc.
The mode of heating of heat flow runs whole system up to artificial finishing control；In this all control process, power supply power when
Between, the temperature of controlled device, dutycycle, etc. the parameter such as heating amount of heat flow heating can be controlled by parameter output record in real time
Device is recorded.The concrete control flow of this embodiment is as shown in figure 4, the t0 of in figure represents the control temperature of controlled device, δ t
It is the control accuracy of temperature, this two controlled quentity controlled variables are all inputted by control parameter loader；T represents and is sensed by K-type electric thermo-couple temperature
The temperature of the controlled device of device measurement.
Claims (1)
1. a kind of temperature control system being controlled based on dsp and temperature sensor is it is characterised in that include dsp, power supply, temperature biography
Sensor, control parameter loader and parameter output recording controller, wherein control parameter loader, dsp and parameter output record
Controller is linked in sequence, and dsp and power supply connect, and temperature sensor is arranged in controlled device, and power supply is connected with controlled device, quilt
Temperature sensor on control object is connected with the ad port of dsp by data wire；
The isothermal heating control method of this temperature control system, comprises the following steps:
(1) inputted control temperature, the temperature control precision value of controlled device first by control parameter loader, and switch on power；
Temperature sensor signal in collection controlled device, temperature signal is delivered to the ad port of dsp；Dsp is by the number of ad port processing
Send the finger of power supply and power-off to power supply after carrying out contrasting, judge according to the control parameter being input to dsp with control parameter loader
Order；
(2) if the temperature value of collection is higher than control temperature and the temperature control precision value sum of controlled device, dsp is allowed to send
The instruction of deenergization；If the temperature value of collection is less than the control temperature of controlled device and the difference of temperature control precision value,
Dsp is allowed to send the instruction switching on power；
This temperature control system etc. heat flow method for heating and controlling, comprise the following steps:
(1) control temperature, pid control law and the temperature control precision of controlled device is inputted first by control parameter loader
Value；Dsp is signaled to pulse width conversion by the pwm port of dsp after the control parameter receiving the input of control parameter loader
Device, switches on power under 10% dutycycle；
(2) temperature sensor signal in collection controlled device, temperature signal is delivered to the ad port of dsp；Ad port is adopted by dsp
The control parameter that the data of collection is input to dsp with control parameter loader carries out contrasting, judges；
(3) if the temperature value of collection is higher than control temperature and the temperature control precision value sum of controlled device, dsp is allowed to send
Reduce dutycycle instruction, by dsp pwm port transmission to pulse width conversion device with the dutycycle of regulation power supply；If collection
Temperature value is less than the control temperature of controlled device and the difference of temperature control precision value, then allow dsp send the instruction increasing dutycycle,
By dsp pwm port transmission to pulse width conversion device with the dutycycle of regulation power supply；
(4) when controlled device temperature control is in the range of the control accuracy that control parameter loader inputs, dsp send instruction by
Pwm port transmission and exports recording controller record now by parameter to pulse width conversion device to lock the dutycycle of power supply
Duty cycle information, reaches the heating of the heat flows such as controlled device；
(5) once the dutycycle locking of power supply, controlled device such as enters at the state of heat flow heating, until artificially cutting off the electricity supply
Stop heating.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410159430.8A CN103984375B (en) | 2014-04-21 | 2014-04-21 | Temperature control system based on DSP and temperature sensor control and control method thereof |
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| CN201410159430.8A CN103984375B (en) | 2014-04-21 | 2014-04-21 | Temperature control system based on DSP and temperature sensor control and control method thereof |
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| CN103984375B true CN103984375B (en) | 2017-02-01 |
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| CN107456068B (en) * | 2017-09-19 | 2020-04-07 | 广东美的厨房电器制造有限公司 | Cooking appliance control method and control device and cooking appliance |
| CN107544338B (en) * | 2017-09-19 | 2019-04-30 | 广东美的厨房电器制造有限公司 | Control method, control device and the cooking apparatus of cooking apparatus |
| CN110157896A (en) * | 2019-05-09 | 2019-08-23 | 佛山市华信微晶金属有限公司 | A kind of crystallization exothermic temperature controller and its control method with learning functionality |
| CN113252493B (en) * | 2021-07-13 | 2021-10-01 | 中国飞机强度研究所 | Control method of thermal strength test system |
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| JP2005202832A (en) * | 2004-01-19 | 2005-07-28 | Furukawa Electric Co Ltd:The | Apparatus and method for temperature control |
| CN101025635A (en) * | 2007-03-07 | 2007-08-29 | 北京航空航天大学 | Full digital temperature control device suitable for optical fiber gyro inertial measurement combination |
| CN101540474A (en) * | 2009-04-07 | 2009-09-23 | 吉林大学 | Thermostatic controller of digital semiconductor laser |
| CN202177837U (en) * | 2011-07-02 | 2012-03-28 | 武汉理工大学 | Oxygen enriched ceramic kiln temperature controller based on DSP |
| CN102945008A (en) * | 2012-10-31 | 2013-02-27 | 西南大学 | Control system for pepper baking |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6584128B2 (en) * | 2001-01-05 | 2003-06-24 | Scientific-Atlanta, Inc. | Thermoelectric cooler driver utilizing unipolar pulse width modulated synchronous rectifiers |
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Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005202832A (en) * | 2004-01-19 | 2005-07-28 | Furukawa Electric Co Ltd:The | Apparatus and method for temperature control |
| CN101025635A (en) * | 2007-03-07 | 2007-08-29 | 北京航空航天大学 | Full digital temperature control device suitable for optical fiber gyro inertial measurement combination |
| CN101540474A (en) * | 2009-04-07 | 2009-09-23 | 吉林大学 | Thermostatic controller of digital semiconductor laser |
| CN202177837U (en) * | 2011-07-02 | 2012-03-28 | 武汉理工大学 | Oxygen enriched ceramic kiln temperature controller based on DSP |
| CN102945008A (en) * | 2012-10-31 | 2013-02-27 | 西南大学 | Control system for pepper baking |
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