CN110888465A - Current-free sound pressure-regulating constant-temperature fire box temperature controller - Google Patents

Current-free sound pressure-regulating constant-temperature fire box temperature controller Download PDF

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Publication number
CN110888465A
CN110888465A CN201911218001.2A CN201911218001A CN110888465A CN 110888465 A CN110888465 A CN 110888465A CN 201911218001 A CN201911218001 A CN 201911218001A CN 110888465 A CN110888465 A CN 110888465A
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China
Prior art keywords
temperature
voltage
silicon controlled
microprocessor
power supply
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Pending
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CN201911218001.2A
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Chinese (zh)
Inventor
易健
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Huaihua Fan Hai Yun Electronic Technology Co Ltd
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Huaihua Fan Hai Yun Electronic Technology Co Ltd
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Priority to CN201911218001.2A priority Critical patent/CN110888465A/en
Publication of CN110888465A publication Critical patent/CN110888465A/en
Pending legal-status Critical Current

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    • GPHYSICS
    • G05CONTROLLING; REGULATING
    • G05DSYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
    • G05D23/00Control of temperature
    • G05D23/19Control of temperature characterised by the use of electric means
    • G05D23/1917Control of temperature characterised by the use of electric means using digital means
    • GPHYSICS
    • G05CONTROLLING; REGULATING
    • G05DSYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
    • G05D23/00Control of temperature
    • G05D23/19Control of temperature characterised by the use of electric means
    • G05D23/20Control of temperature characterised by the use of electric means with sensing elements having variation of electric or magnetic properties with change of temperature
    • G05D23/24Control of temperature characterised by the use of electric means with sensing elements having variation of electric or magnetic properties with change of temperature the sensing element having a resistance varying with temperature, e.g. a thermistor
    • GPHYSICS
    • G05CONTROLLING; REGULATING
    • G05DSYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
    • G05D23/00Control of temperature
    • G05D23/19Control of temperature characterised by the use of electric means
    • G05D23/30Automatic controllers with an auxiliary heating device affecting the sensing element, e.g. for anticipating change of temperature
    • G05D23/303Automatic controllers with an auxiliary heating device affecting the sensing element, e.g. for anticipating change of temperature using a sensing element having a resistance varying with temperature, e.g. thermistor
    • GPHYSICS
    • G05CONTROLLING; REGULATING
    • G05DSYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
    • G05D23/00Control of temperature
    • G05D23/19Control of temperature characterised by the use of electric means
    • G05D23/30Automatic controllers with an auxiliary heating device affecting the sensing element, e.g. for anticipating change of temperature
    • G05D23/32Automatic controllers with an auxiliary heating device affecting the sensing element, e.g. for anticipating change of temperature with provision for adjustment of the effect of the auxiliary heating device, e.g. a function of time

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Automation & Control Theory (AREA)
  • Control Of Resistance Heating (AREA)

Abstract

The invention discloses a currentless sound pressure-regulating constant-temperature fire box temperature controller, which comprises a heating device; the silicon controlled rectifier chip is used for controlling the number of voltage periodic waves passed by the power supply voltage in a unit period so as to adjust the voltage of the heating device; the temperature sensor is used for detecting and acquiring temperature information of heat energy generated by the heat generating device; the microprocessor is used for acquiring the temperature information and controlling the silicon controlled chip to act according to the temperature information and a preset program rule so as to control the number of voltage periodic waves passing through the silicon controlled chip in a unit period; the resistance-capacitance voltage reduction circuit is used for reducing the voltage of the alternating current of the external power supply and converting the alternating current into direct current so as to supply power to the microprocessor and the silicon controlled chip; and a constant temperature setting adjustment unit for setting a desired temperature. Compared with the related art, the current-free sound pressure-regulating constant-temperature fire box temperature controller can realize constant temperature regulation, does not generate abnormal sound, and has good user experience effect.

Description

Current-free sound pressure-regulating constant-temperature fire box temperature controller
[ technical field ] A method for producing a semiconductor device
The invention belongs to the technical field of electronic devices, and particularly relates to a currentless sound pressure-regulating constant-temperature fire box temperature controller.
[ background of the invention ]
The existing electric fire box has simple power regulation, and can regulate the heating speed so as to meet the basic requirement of people on heating in winter. The electric fire box in the past adopts has two main types of temperature regulation switch:
one is that the sine wave of a period is adjusted by the chopper of the silicon controlled rectifier to adjust the resistance of the adjustable resistor, so that the partial waveform of the sine wave can not pass through the silicon controlled rectifier to achieve the effect of adjusting the voltage, and the heating speed of the heating device is changed by the voltage to achieve the purpose of controlling the temperature. And because the sine wave is chopped forcibly, the sine wave is changed into an irregular waveform, and a non-stop 'squeak' sound is generated when the heat is generated.
The other intelligent temperature controller has two on-off closing device forms:
the relay is used as a temperature adjusting switch of the temperature control device. However, the relay is a device having a mechanical life, and is accompanied by a click-affecting environment when it is turned off and sucked, and thus is greatly limited in use. The advantage is that the temperature can be set and constant at a certain set value.
The conduction angle delay of the controllable silicon is used for controlling the heating speed of the temperature control and the set temperature is reached by closing the controllable silicon. In terms of service life, the normal service life of the silicon controlled rectifier is far longer than that of a mechanical relay, and the heating speed can be controlled by controlling the conduction angle of the silicon controlled rectifier. The product is superior to other products in both effect and service life. But during the heating process, the temperature is just as the same as the normal temperature adjustment.
[ summary of the invention ]
The invention aims to provide a current-free sound pressure-regulating constant-temperature fire box temperature controller which can be adjusted to realize constant temperature and does not generate abnormal sound.
In order to solve the technical problem, the invention provides a currentless sound pressure-regulating constant-temperature fire box temperature controller, which comprises:
the heating device is used for converting electric energy of an external power supply into heat energy;
the controllable silicon chip is used for connecting the heating device with an external power supply and controlling the number of voltage periodic waves passed by power supply voltage in a unit period so as to adjust the voltage of the heating device;
the temperature sensor is used for detecting and acquiring temperature information of heat energy generated by the heat generating device;
the microprocessor is respectively connected with the temperature sensor and the silicon controlled chip and is used for acquiring the temperature information and controlling the silicon controlled chip to act according to the temperature information and a preset program rule so as to control the number of voltage periodic waves passing through the silicon controlled chip in a unit period;
the resistance-capacitance voltage reduction circuit is used for connecting the microprocessor with an external power supply, reducing the alternating current of the external power supply and converting the alternating current into direct current so as to supply power to the microprocessor and the silicon controlled chip; and the number of the first and second groups,
and the constant temperature setting and adjusting unit is electrically connected with the microprocessor and is used for setting the required temperature.
Preferably, the heating device is a heating sheet.
Preferably, the microprocessor is an SN2711-8 single chip microcomputer.
Preferably, the temperature sensor is a negative temperature coefficient thermistor.
Compared with the prior art, the currentless sound-pressure-regulating constant-temperature fire box temperature controller is used for acquiring the temperature information and controlling the silicon controlled chip to act according to the temperature information and the preset program rule so as to control the number of voltage periodic waves passing through the silicon controlled chip in a unit period, thereby controlling the voltage of the heating device and realizing the regulation of heating speed and constant temperature; because the voltage sine wave (periodic wave) passes through the whole complete waveform, the sine wave with the cut part does not exist, and the passing sine wave is smooth and complete sine wave, so that the current sound of 'squeak' generated by the jump of the voltage is avoided, abnormal sound during adjustment is avoided, and the user experience effect is better.
[ description of the drawings ]
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the description of the embodiments of the present invention will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without inventive exercise.
Fig. 1 is a block diagram of a temperature controller of a currentless sound-pressure-regulating thermostatic fire box according to an embodiment of the present invention.
[ detailed description ] embodiments
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
As shown in fig. 1, the present invention provides a currentless acoustic pressure-regulating thermostatic fire box temperature controller 100, comprising: heating device 1, silicon controlled chip 2, temperature sensor 3, microprocessor 4, resistance-capacitance step-down circuit 5 and constant temperature setting and adjusting unit 6.
The heating device 1 is used for converting electric energy of an external power supply (e.g., commercial power) into heat energy after being connected with the external power supply. In the present embodiment, the heat generating device 1 is a heat generating sheet or the like.
The silicon-controlled chip 2 connects the heating device 1 with an external power supply, and is used for controlling the number of voltage periodic waves passed by the power supply voltage in a unit period so as to adjust the voltage of the heating device 1.
The temperature sensor 3 is used for detecting and acquiring temperature information of heat energy generated by the heating device 1. Such as real-time detection of the temperature at a preset position by the temperature sensor 3.
In this embodiment, the temperature sensor 3 employs a negative temperature coefficient thermistor (NTC), and its operating principle is to collect temperature information and then transfer the temperature to a resistance value, and transfer the real-time voltage to the microprocessor through a voltage dividing circuit. Of course, not limited thereto.
The microprocessor 4 is respectively connected with the temperature sensor 3 and the silicon controlled rectifier chip 2 and is used for collecting the temperature information and controlling the silicon controlled rectifier chip 2 to act according to the temperature information and a preset program rule so as to control the number of voltage periodic waves passing through the silicon controlled rectifier chip 2 in a unit period.
For example, in the embodiment, a SN2711-8 single chip microcomputer of john is used as the main control MCU microprocessor, the temperature information is converted into digital information through an analog-to-digital conversion IO port of the main control MCU microprocessor, a temperature control rule (such as a preset threshold temperature) is written in a program by using the program, and the number of voltage periodic waves allowed to pass through the silicon controlled chip 2 in a unit period is controlled by the program according to the preset rule, so as to control the voltage of the heating device 1, thereby realizing heating speed adjustment and constant temperature control.
For example, the periodic wave of the power supply voltage (mains) 220V is a sine wave, and the step of the sine wave is 50Hz, that is, 50 periodic waves pass through the sine wave within 1 second of the unit period. If the heating device 1 is required to slow heating to realize constant temperature control, the voltage control of the heating device 1 can be reduced, for example, 220V is changed into 110V, the microprocessor 4 counts the number of periodic waves in unit time, controls 25 periodic waves to pass through the silicon controlled chip 2, and controls the silicon controlled chip to execute the passing and non-passing of the periodic waves according to the control of the microprocessor 4, so that the voltage of the heating device 1 in unit time is 110V, and the purpose of adjusting the slow heating is realized.
Since the sine wave passes through the whole complete waveform, the sine wave with the cut-off part does not exist, and the passing sine wave is smooth and complete sine wave, so that the 'squeak' current sound generated by the voltage jump is not generated.
The resistance-capacitance voltage reduction circuit 5 connects the microprocessor 4 with an external power supply, and is used for reducing the alternating current of the external power supply and converting the alternating current into direct current so as to supply power to the microprocessor 4 and the silicon controlled rectifier chip 2. In this embodiment, the rc step-down circuit 5 is formed by a CBB capacitor and a resistor, and converts 220V ac power of an external power supply into 12V or 5V dc power.
The constant temperature setting and adjusting unit 6 is electrically connected with the microprocessor 4 and is used for setting the required temperature. The constant temperature setting adjustment unit 6 may be an adjustment rotation.
For example, the temperature is set to 40 ℃ by the constant temperature setting and adjusting unit 6, the microprocessor 4 receives the temperature information detected by the temperature sensor and adjusts the voltage of the heating device 1 according to a preset rule: when the temperature is lower than the set temperature, the microprocessor 4 controls the number of the periodic waves passing through the silicon controlled chip 2 in a unit period to increase so as to improve the voltage and accelerate the heating; when the temperature is higher than the set temperature, the microprocessor 4 controls the number of the periodic waves passing through the silicon controlled rectifier chip 2 in a unit period to be reduced so as to reduce the voltage and slow down the heating, thereby achieving a constant temperature setting.
The control and preset rules are realized by writing a control program in the microprocessor.
In the present invention, the heating device 1, the silicon controlled chip 2, the temperature sensor 3, the microprocessor 4, the resistance-capacitance voltage reduction circuit 5, and the constant temperature setting and adjusting unit 6 are all conventional electronic devices. The controller 100 of the constant temperature fire box without current sound and voltage regulation is a good control mode when being used for heating devices, solves the problems of short service life of a relay and current sound caused by the controlled silicon controlled by a conduction angle, and can also keep the temperature constant through the controlled silicon. It is not suitable for use in the field of dimming, where dimming is not the case, because the light will produce a sparkle.
Compared with the prior art, the currentless sound-pressure-regulating constant-temperature fire box temperature controller is used for acquiring the temperature information and controlling the silicon controlled chip to act according to the temperature information and the preset program rule so as to control the number of voltage periodic waves passing through the silicon controlled chip in a unit period, thereby controlling the voltage of the heating device and realizing the regulation of heating speed and constant temperature; because the voltage sine wave (periodic wave) passes through the whole complete waveform, the sine wave with the cut part does not exist, and the passing sine wave is smooth and complete sine wave, so that the current sound of 'squeak' generated by the jump of the voltage is avoided, abnormal sound during adjustment is avoided, and the user experience effect is better.
While the foregoing is directed to embodiments of the present invention, it will be understood by those skilled in the art that various changes may be made without departing from the spirit and scope of the invention.

Claims (4)

1. The utility model provides a constant temperature firebox temperature controller of no current sound pressure regulating which characterized in that includes:
the heating device is used for converting electric energy of an external power supply into heat energy;
the controllable silicon chip is used for connecting the heating device with an external power supply and controlling the number of voltage periodic waves passed by power supply voltage in a unit period so as to adjust the voltage of the heating device;
the temperature sensor is used for detecting and acquiring temperature information of heat energy generated by the heat generating device;
the microprocessor is respectively connected with the temperature sensor and the silicon controlled chip and is used for acquiring the temperature information and controlling the silicon controlled chip to act according to the temperature information and a preset program rule so as to control the number of voltage periodic waves passing through the silicon controlled chip in a unit period;
the resistance-capacitance voltage reduction circuit is used for connecting the microprocessor with an external power supply, reducing the alternating current of the external power supply and converting the alternating current into direct current so as to supply power to the microprocessor and the silicon controlled chip; and the number of the first and second groups,
and the constant temperature setting and adjusting unit is electrically connected with the microprocessor and is used for setting the required temperature.
2. The currentless sound-pressure-regulating thermostatic fire box controller according to claim 1, wherein the heating device is a heating sheet.
3. The currentless sound pressure regulating constant temperature fire box controller according to claim 1, wherein the microprocessor is an SN2711-8 single chip microcomputer.
4. The currentless sound-pressure-regulating thermostatic fire box controller of claim 1, wherein the temperature sensor is a negative temperature coefficient thermistor.
CN201911218001.2A 2019-12-03 2019-12-03 Current-free sound pressure-regulating constant-temperature fire box temperature controller Pending CN110888465A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201911218001.2A CN110888465A (en) 2019-12-03 2019-12-03 Current-free sound pressure-regulating constant-temperature fire box temperature controller

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201911218001.2A CN110888465A (en) 2019-12-03 2019-12-03 Current-free sound pressure-regulating constant-temperature fire box temperature controller

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Publication Number Publication Date
CN110888465A true CN110888465A (en) 2020-03-17

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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4950872A (en) * 1989-08-16 1990-08-21 Therme, Inc. Control circuit for a source of heat
CN201757565U (en) * 2010-07-30 2011-03-09 广州环亚化妆品科技有限公司 Oven device
CN202419899U (en) * 2011-11-29 2012-09-05 上海沪特航空技术有限公司 Electric air heater
CN203586388U (en) * 2013-10-07 2014-05-07 黄子晋 Super-energy-saving safe intelligent heating controller
CN106712750A (en) * 2017-03-29 2017-05-24 莺歌烧(深圳)文化发展有限公司 Control method for switch power device, device and control system for electric appliance power

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4950872A (en) * 1989-08-16 1990-08-21 Therme, Inc. Control circuit for a source of heat
CN201757565U (en) * 2010-07-30 2011-03-09 广州环亚化妆品科技有限公司 Oven device
CN202419899U (en) * 2011-11-29 2012-09-05 上海沪特航空技术有限公司 Electric air heater
CN203586388U (en) * 2013-10-07 2014-05-07 黄子晋 Super-energy-saving safe intelligent heating controller
CN106712750A (en) * 2017-03-29 2017-05-24 莺歌烧(深圳)文化发展有限公司 Control method for switch power device, device and control system for electric appliance power

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Application publication date: 20200317