CN116358109A - Electric heating system, control method thereof and electronic equipment - Google Patents
Electric heating system, control method thereof and electronic equipment Download PDFInfo
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- CN116358109A CN116358109A CN202310203255.7A CN202310203255A CN116358109A CN 116358109 A CN116358109 A CN 116358109A CN 202310203255 A CN202310203255 A CN 202310203255A CN 116358109 A CN116358109 A CN 116358109A
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- 238000005485 electric heating Methods 0.000 title claims abstract description 138
- 238000000034 method Methods 0.000 title claims abstract description 45
- 238000001514 detection method Methods 0.000 claims abstract description 150
- 230000007274 generation of a signal involved in cell-cell signaling Effects 0.000 claims abstract description 27
- 238000012545 processing Methods 0.000 claims abstract description 6
- 239000003990 capacitor Substances 0.000 claims description 42
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 34
- 238000010438 heat treatment Methods 0.000 claims description 14
- 230000007613 environmental effect Effects 0.000 claims description 7
- 230000008878 coupling Effects 0.000 claims description 2
- 238000010168 coupling process Methods 0.000 claims description 2
- 238000005859 coupling reaction Methods 0.000 claims description 2
- 238000010586 diagram Methods 0.000 description 8
- 238000004590 computer program Methods 0.000 description 6
- 238000004378 air conditioning Methods 0.000 description 4
- 238000009825 accumulation Methods 0.000 description 2
- 238000004891 communication Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000009529 body temperature measurement Methods 0.000 description 1
- 238000013500 data storage Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000008014 freezing Effects 0.000 description 1
- 238000007710 freezing Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000010257 thawing Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/30—Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring
- F24F11/41—Defrosting; Preventing freezing
- F24F11/42—Defrosting; Preventing freezing of outdoor units
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
- F24F11/63—Electronic processing
- F24F11/64—Electronic processing using pre-stored data
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/70—Control systems characterised by their outputs; Constructional details thereof
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/88—Electrical aspects, e.g. circuits
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- Combustion & Propulsion (AREA)
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- General Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Physics & Mathematics (AREA)
- Fuzzy Systems (AREA)
- Mathematical Physics (AREA)
- Air-Conditioning For Vehicles (AREA)
Abstract
The invention provides an electric heating system, a control method thereof and electronic equipment, wherein the electric heating system comprises: the detection signal generation module is used for generating a capacitance detection signal; the capacitance signal acquisition module is electrically connected with the detection signal generation module and is used for processing the capacitance detection signal into a voltage signal; the control module is electrically connected with the capacitance signal acquisition module and is used for receiving the voltage signal and analyzing the voltage signal to obtain voltage data, judging the environment medium state of the electric heating device according to the voltage data and outputting a corresponding control signal; and the electric heating device is used for executing corresponding control commands according to the control signals. The invention solves the problem that the conventional electric heater for deicing can accurately detect the icing state by additionally adding an independent detection device, greatly simplifies the physical structure of the product, greatly reduces the volume of the product, greatly improves the usability of the invention and expands the application scene of the invention.
Description
Technical Field
The invention relates to the technical field of control of electric heating systems, in particular to an electric heating system, a control method thereof and electronic equipment.
Background
When the air conditioner is started to work in a heating mode, the temperature of a condenser of an air conditioner outdoor unit is low, and when the humidity of an outdoor environment is high, the condenser is easy to frost. The air conditioner can start the defrosting operation of the condenser, and the frosting of the outdoor unit is melted into water. When the outdoor air temperature is too low, the thawed water is easy to freeze at the water collecting positions such as the chassis, the water outlet and the like, so that drainage is blocked, and the normal operation of the air conditioner is affected. When outdoor snowing weather occurs, part of ice and snow may directly enter the concentrated water of the outdoor unit to form icing state, resulting in water drain blockage. The current technical scheme is that an electric heating device is added on a bottom plate of an outdoor unit, a temperature sensor is added near a chassis, and the temperature sensor senses a temperature signal to control the electric heating device to work so as to carry out deicing treatment of the chassis. There is also a method of placing the temperature sensor at a position far from the chassis, sensing only the temperature of the outdoor air, and when the outdoor temperature is low (zero or below), turning on the electric heating device of the chassis to prevent the chassis from freezing.
The problem of the current technology is that the work of the chassis electric heating device is controlled only by the temperature measurement of the temperature sensor of the air conditioner outdoor unit, and whether the chassis is in the icing state is not detected, so that the energy waste is easy to cause. In the prior art, if the chassis needs to be detected to be frozen, an independent ice detecting device is additionally arranged. For example, patent CN113669882a discloses a scheme for detecting icing state by using wind energy, and additionally adds a detection device. Patent CN109612054a discloses a control method for deicing of chassis of outdoor unit of air conditioner, which is based on signal of pressure sensor to control deicing of chassis, and has high cost.
Accordingly, the prior art is subject to further development.
Disclosure of Invention
The invention aims to overcome the technical defects and provide an electric heating system, a control method thereof and electronic equipment so as to solve the problems in the prior art.
To achieve the above technical object, according to a first aspect of the present invention, there is provided an electric heating system comprising:
the detection signal generation module is used for generating a capacitance detection signal;
the capacitance signal acquisition module is electrically connected with the detection signal generation module and is used for processing the capacitance detection signal into a voltage signal;
the control module is electrically connected with the capacitance signal acquisition module and is used for receiving the voltage signal and analyzing the voltage signal to obtain voltage data, judging the environment medium state of the electric heating device according to the voltage data and outputting a corresponding control signal;
and the electric heating device is electrically connected with the control module and is used for executing corresponding control commands according to the control signals.
Specifically, the detection signal generation module includes:
a detection signal generation circuit, the detection signal generation circuit comprising: the capacitive detection device comprises a capacitive detection signal generating end, a first capacitor and a capacitive detection signal output end, wherein the capacitive detection signal generating end is connected with one end of the first capacitor, and the other end of the first capacitor is connected with the capacitive detection signal output end.
Specifically, the capacitive signal acquisition module includes:
a capacitance signal detection circuit, the capacitance signal detection circuit comprising: the device comprises a capacitor detection signal input end, a second capacitor, a second diode and a voltage signal detection end, wherein the detection signal input end is connected with one end of the second capacitor, the other end of the second capacitor is connected with the anode of the second diode, and the cathode of the second diode is connected with the voltage signal detection end.
Specifically, the electric heating device further comprises an external power supply, the control module is in control connection with the external power supply and is used for outputting corresponding control signals to control the on-off of the external power supply, the electric heating device comprises a first power supply terminal and a second power supply terminal, the first power supply terminal and the second power supply terminal are connected with the external power supply and are used for supplying power to the electric heating device, the detection signal output end and the detection signal input end are respectively connected with the first power supply terminal and/or the second power supply terminal, or the electric heating device can be arranged into two, and the detection signal output end and the detection signal input end are respectively connected with the first power supply terminal or the second power supply terminal in the two electric heating devices.
According to a second aspect of the present invention, there is provided a control method of an electric heating system, comprising:
s100, starting a detection signal generation module to generate a capacitance detection signal;
s200, the capacitance signal acquisition module processes the capacitance detection signal into a voltage signal;
s300, the control module receives the voltage signal and analyzes the voltage signal to obtain voltage data, judges the state of an environmental medium in which the electric heating device is positioned according to the voltage data, and outputs a corresponding control signal;
s400, the electric heating device executes corresponding control commands according to the control signals.
Specifically, the S200 includes:
the capacitance detection signal generated by the detection signal generation module is input to the capacitance detection signal input end through the first capacitance and the second capacitance coupling by the capacitance detection signal output end, and the capacitance signal acquisition module processes the capacitance detection signal into a voltage signal.
Specifically, the S300 includes:
the control module calculates an equivalent capacitance value of an environmental medium in which the electric heating device is positioned according to the voltage data, judges whether the equivalent capacitance value is larger than or equal to a first preset threshold value, if so, judges whether the equivalent capacitance value is larger than or equal to a second preset threshold value, if not, judges that the electric heating device is placed in ice, and outputs a control signal related to controlling the electric heating device to be started.
Specifically, the S300 further includes:
if the equivalent capacitance value is smaller than a first preset threshold value, the electric heating device is judged to be placed in the air, and a control signal for controlling the electric heating device to be turned off is output.
Specifically, the S300 further includes:
if the equivalent capacitance value is larger than or equal to a second preset threshold value, the electric heating device is judged to be placed in water, and a control signal for controlling the electric heating device to maintain the working state unchanged is output.
According to a third aspect of the present invention, there is provided an electronic device comprising:
a memory; and a processor, the memory having stored thereon computer readable instructions which when executed by the processor implement the method of controlling the electrical heating system.
The beneficial effects of the invention are as follows:
the invention provides a novel electric heating system, a control method thereof and electronic equipment. The invention solves the problem that the conventional electric heater for deicing can accurately detect the icing state by additionally adding an independent detection device, greatly simplifies the physical structure of the product, greatly reduces the volume of the product, greatly improves the usability of the invention and expands the application scene of the invention.
Drawings
FIG. 1 is a block diagram of an electrical heating system provided in an embodiment of the present invention;
FIG. 2 is a schematic view of an electric heating apparatus provided in an embodiment of the present invention;
FIG. 3 is a block diagram of a detection signal generation circuit and a capacitance signal detection circuit provided in an embodiment of the present invention;
FIG. 4 is a flow chart of a method of controlling an electrical heating system provided in an embodiment of the present invention;
FIG. 5 is a schematic diagram of a structure of a detection signal generating circuit, a capacitance signal detecting circuit and an electric heater according to an embodiment of the present invention;
FIG. 6 is a schematic diagram of a structure of a detection signal generating circuit, a capacitance signal detecting circuit and an electric heater according to another embodiment of the present invention;
FIG. 7 is a schematic diagram of a structure of a detection signal generating circuit, a capacitance signal detecting circuit and an electric heater according to another embodiment of the present invention;
FIG. 8 is a schematic diagram of a calibration operation of a detection parameter in an embodiment of the invention;
FIG. 9 is a schematic diagram of an electrical heating device with added resistance detection circuit according to another embodiment of the invention;
FIG. 10 is a schematic diagram of an added voltage detection and current detection circuit for an electrical heating apparatus according to another embodiment of the invention;
wherein: 1. a first power supply terminal; 2. a second power supply terminal; 3. a capacitance detection signal generating end; 4. a voltage signal detection terminal; 5. a capacitance detection signal output end; 6. and a capacitance detection signal input terminal.
Detailed Description
In order to make the technical solution of the present invention better understood by those skilled in the art, the technical solution of the present invention will be clearly and completely described below with reference to the accompanying drawings, and based on the embodiments in the present application, other similar embodiments obtained by those skilled in the art without making creative efforts should fall within the scope of protection of the present application. In addition, directional words such as "upper", "lower", "left", "right", and the like, as used in the following embodiments are merely directions with reference to the drawings, and thus, the directional words used are intended to illustrate, not to limit, the invention.
The invention will be further described with reference to the drawings and preferred embodiments.
Referring to fig. 1-4, the present embodiment provides an electric heating system, the system comprising:
a detection signal generation module 100, where the detection signal generation module 100 is configured to generate a capacitance detection signal;
the capacitance signal acquisition module 200 is electrically connected with the detection signal generation module 100 and is used for processing the capacitance detection signal into a voltage signal;
the control module 300 is electrically connected with the capacitance signal acquisition module 200, and is used for receiving the voltage signal and analyzing the voltage signal to obtain voltage data, judging the environment medium state of the electric heating device 400 according to the voltage data, and outputting a corresponding control signal;
the electric heating device 400 is electrically connected with the control module 300 and is used for executing corresponding control commands according to the control signals.
Specifically, the detection signal generation module 100 includes:
a detection signal generation circuit, the detection signal generation circuit comprising: the capacitive detection signal generation end 3 is connected with one end of the first capacitor C1, and the other end of the first capacitor C1 is connected with the capacitive detection signal output end 5.
Specifically, the detection signal generation circuit further includes: the other end of the first capacitor C1 is connected with the capacitor detection signal output end 5 and one end of the first resistor R1, the other end of the first resistor R1 is grounded, and the first resistor R1 is grounded to provide a release path for the first capacitor C1.
Specifically, the capacitance signal acquisition module 200 includes:
a capacitance signal detection circuit, the capacitance signal detection circuit comprising: the device comprises a capacitance detection signal input end 6, a second capacitor C2, a second diode D2 and a voltage signal detection end 4, wherein the detection signal input end is connected with one end of the second capacitor C2, the other end of the second capacitor C2 is connected with the anode of the second diode, and the cathode of the second diode is connected with the voltage signal detection end 4.
The capacitance signal detection circuit further includes: the detection signal input end is connected with one end of the second capacitor C2, the other end of the second capacitor C2 is connected with the cathode of the first diode D2 and the anode of the second diode, the cathode of the second diode is connected with one end of the second resistor R2, one end of the third capacitor C3 and the voltage signal detection end 4, and the anode of the first diode D2 is connected with the other end of the second resistor R2, the other end of the third capacitor C3 and the ground. The third capacitor C3 is a filter capacitor, the second resistor R2 is a voltage dividing resistor, and the capacitance signal detection circuit is configured to process the capacitance detection signal into a voltage signal and input the voltage signal into the control module 300 through the voltage signal detection terminal 4.
Specifically, the electric heating device 400 further comprises an external power supply, the control module 300 is in control connection with the external power supply and is used for outputting corresponding control signals to control the external power supply to be turned on or turned off, the electric heating device 400 comprises a first power supply terminal 1 and a second power supply terminal 2, the first power supply terminal 1 and the second power supply terminal 2 are connected with the external power supply and are used for supplying power to the electric heating device 400, the detection signal output end and the detection signal input end are respectively connected with the first power supply terminal 1 and/or the second power supply terminal 2, or the electric heating device 400 can be arranged into two, and the detection signal output end and the detection signal input end are respectively connected with the first power supply terminal 1 or the second power supply terminal 2 in the two electric heating devices 400.
Here, when the direct current or the alternating current is supplied to both ends of the first power supply terminal 1 or the second power supply terminal 2 of the electric heating device 400, the heat of the heating element is emitted through the insulating layer or the heat conducting layer, and the heating element plays a role of heating and deicing.
With continued reference to fig. 1-4, the present embodiment provides a method for controlling an electric heating system, the method including:
s100, the start detection signal generation module 100 generates a capacitance detection signal.
Here, the detection signal generating module 100 includes a detection signal generating chip, where the detection signal generating chip includes a detection signal generating pin, and the detection signal generating chip is capable of generating a high-level or low-level capacitance detection signal by controlling the detection signal generating pin by a program.
Here, the step S100 includes, before: a first preset threshold and a second preset threshold are preset, the first preset threshold is smaller than the second preset threshold, the first preset threshold and the second preset threshold are obtained through detection parameter calibration operation, referring to fig. 8, the detection parameter calibration operation includes:
the electric heating device 400 is installed in an air conditioner prototype, the installed electric heating device 400 is respectively placed in air, water and ice, the detection signal generation module 100 is started to generate a capacitance detection signal, the capacitance signal acquisition module 200 processes the capacitance detection signal into a voltage signal, the control module 300 receives the voltage signal and analyzes the voltage signal to obtain voltage data, the control module 300 respectively calculates and records equivalent capacitance values of the electric heating device 400 respectively placed in the air, the water and the ice according to the voltage data, and the first preset threshold value and the second preset threshold value are calibrated according to the measured equivalent capacitance values when the electric heating device 400 is respectively placed in the air, the water and the ice.
S200, the capacitance signal acquisition module 200 processes the capacitance detection signal into a voltage signal.
Specifically, the S200 includes:
the capacitance detection signal generated by the detection signal generating module 100 is coupled through the first capacitor C1 and the second capacitor C2, and is input to the capacitance detection signal input end 6 from the capacitance detection signal output end 5, and the capacitance signal collecting module 200 processes the capacitance detection signal into a voltage signal.
S300, the control module 300 receives the voltage signal and analyzes the voltage signal to obtain voltage data, and judges the environment medium state of the electric heating device 400 according to the voltage data and outputs a corresponding control signal.
Here, the first power supply terminal 1 and the second power supply terminal 2 of the electric heating device 400 according to the present invention are provided with a detection signal generating circuit and a capacitance signal detecting circuit, and the state of the medium near the electric heating device is determined by detecting the equivalent capacitance value of the environmental medium in which the electric heating device 400 is located. Because of the difference in dielectric constants of air, water and ice, it is possible to determine whether the electric heating device 400 is in an icing state by detecting the equivalent capacitance value of the environmental medium in which it is located. The chassis electric heater is electrified to carry out ice melting only when the ice is frozen, so that electric energy is saved; by detecting the icing condition of the electric heating device 400 body, the on-off control of the electric heater is realized. The invention solves the problem that the conventional electric heater for deicing can accurately detect the icing state by additionally adding an independent detection device, greatly simplifies the physical structure of the product, greatly reduces the volume of the product, greatly improves the usability of the invention and expands the application scene of the invention.
Specifically, the S300 includes:
the control module 300 calculates an equivalent capacitance value of an environmental medium in which the electric heating device 400 is located according to the voltage data, the control module 300 judges whether the equivalent capacitance value is greater than or equal to a first preset threshold value, if yes, judges whether the equivalent capacitance value is greater than or equal to a second preset threshold value, if not, judges that the electric heating device 400 is placed in ice, and outputs a control signal related to controlling the electric heating device 400 to be started.
It should be noted that, when the environment where the electric heating device 400 is located is no water accumulation or no ice accumulation, the environment where the electric heating device 400 is located is air, preferably, when the electric heating device 400 is applied to the outdoor unit of the air conditioner, the medium between the electric heating device 400 and the chassis of the outdoor unit of the air conditioner is air, and the detected capacitance of the electric heater is relatively small; that is, when the value of the equivalent capacitance is smaller than the first preset threshold, the medium between the electric heating device 400 and the chassis of the air-conditioning outdoor unit is air, when the chassis of the air-conditioning outdoor unit is water, the medium between the electric heating device 400 and the chassis of the air-conditioning outdoor unit is water, and when the value of the equivalent capacitance is larger than or equal to the second preset threshold, the detected capacitance of the electric heater is larger, that is, the medium between the electric heating device 400 and the chassis of the air-conditioning outdoor unit is water. When the chassis is iced, the medium between the electric heating device 400 and the outdoor unit chassis is ice, and the detected equivalent capacitance value is between the air and the water as the environment medium, that is, when the equivalent capacitance value is greater than or equal to the first preset threshold and less than the second preset threshold, the medium between the electric heating device 400 and the outdoor unit chassis is ice.
It can be appreciated that the present invention realizes the on-off control of the electric heater by detecting the icing state of the electric heating device 400 body. The invention solves the problem that the conventional electric heater for deicing can accurately detect the icing state by additionally adding an independent detection device, greatly simplifies the physical structure of the product, greatly reduces the volume of the product, greatly improves the usability of the invention and expands the application scene of the invention.
Specifically, the S300 further includes:
if the equivalent capacitance value is smaller than the first preset threshold value, it is determined that the electric heating device 400 is placed in air, and a control signal related to controlling the electric heating device 400 to be turned off is output.
Specifically, the S300 further includes:
if the equivalent capacitance value is greater than or equal to the second preset threshold, it is determined that the electric heating device 400 is placed in water, and a control signal for controlling the electric heating device 400 to maintain the working state is output.
S400, the electric heating device 400 executes corresponding control commands according to the control signals.
Referring to fig. 5, another embodiment of the present invention provides a control method of an electric heating system, in which:
in this embodiment, the detection signal output end and the detection signal input end are simultaneously connected with the first power supply terminal 1 or the second power supply terminal 2 of the electric heating device 400, and the circuit detects the equivalent capacitance between the electric heater and the chassis and the ground of the air conditioner outdoor unit. When the chassis has no accumulated water or ice, the medium between the electric heating device 400 and the outdoor unit chassis is air, and the detected electric heater capacitance is smaller; when the chassis is water-accumulated, the medium between the electric heating device 400 and the outdoor unit chassis is water, and the detected electric heater capacitance is larger. When the chassis is iced, the medium between the electric heating device 400 and the outdoor unit chassis is ice, at this time, the detected electric heater capacitor is between air and water, that is, when the value of the equivalent capacitor is smaller than the first preset threshold, the medium between the electric heating device 400 and the outdoor unit chassis is air, when the value of the equivalent capacitor is greater than or equal to the second preset threshold, the medium between the electric heating device 400 and the outdoor unit chassis is water, and when the value of the equivalent capacitor is greater than or equal to the first preset threshold and smaller than the second preset threshold, the medium between the electric heating device 400 and the outdoor unit chassis is ice.
Referring to fig. 6, another embodiment of the present invention provides a control method of an electric heating system, in which:
in this embodiment, a detection signal output end and a detection signal input end are respectively connected with a first power supply terminal 1 and a second power supply terminal 2 of the electric heating device 400, and the circuit detects equivalent capacitance between the electric heater and the chassis and the ground of the air conditioner outdoor unit. When the chassis has no accumulated water or ice, the medium between the electric heating device 400 and the outdoor unit chassis is air, and the detected electric heater capacitance is smaller; when the chassis is water-accumulated, the medium between the electric heating device 400 and the outdoor unit chassis is water, and the detected electric heater capacitance is larger. When the chassis is iced, the medium between the electric heating device 400 and the outdoor unit chassis is ice, at this time, the detected electric heater capacitor is between air and water, that is, when the value of the equivalent capacitor is smaller than the first preset threshold, the medium between the electric heating device 400 and the outdoor unit chassis is air, when the value of the equivalent capacitor is greater than or equal to the second preset threshold, the medium between the electric heating device 400 and the outdoor unit chassis is water, and when the value of the equivalent capacitor is greater than or equal to the first preset threshold and smaller than the second preset threshold, the medium between the electric heating device 400 and the outdoor unit chassis is ice.
Referring to fig. 7, another embodiment of the present invention provides a control method of an electric heating system, in which:
in this embodiment, a detection signal output end and a detection signal input end are respectively connected with a first power supply terminal 1 or a second power supply terminal 2 in two electric heating devices 400, and this embodiment is a dual-path or multi-path electric heating device 400 for an air conditioner outdoor unit chassis, and it should be noted that, the control method of the electric heater described in fig. 2 and 3 may be used to perform equivalent capacitance detection, and the control method of the electric heater described in fig. 4 may also be used to perform equivalent capacitance detection, where a capacitance detection signal output end 5 of a detection signal generating circuit and a capacitance detection signal input end 6 of the capacitance signal detecting circuit are respectively and independently connected to the first power supply terminal 1 or the second power supply terminal 2 of two electric heaters. Fig. 4 electrically detects the sum of the capacitance between the two electric heating devices 400 and the equivalent capacitance between the chassis of the outdoor unit of the air conditioner and the ground. When the chassis has no accumulated water or ice, the medium between the electric heating device 400 and the outdoor unit chassis is air, and the detected electric heater capacitance is smaller; when the chassis is water-accumulated, the medium between the electric heating device 400 and the outdoor unit chassis is water, and the detected electric heater capacitance is larger. When the chassis is iced, the medium between the electric heating device 400 and the outdoor unit chassis is ice, at this time, the detected electric heater capacitor is between air and water, that is, when the value of the equivalent capacitor is smaller than the first preset threshold, the medium between the electric heating device 400 and the outdoor unit chassis is air, when the value of the equivalent capacitor is greater than or equal to the second preset threshold, the medium between the electric heating device 400 and the outdoor unit chassis is water, and when the value of the equivalent capacitor is greater than or equal to the first preset threshold and smaller than the second preset threshold, the medium between the electric heating device 400 and the outdoor unit chassis is ice.
Referring to fig. 9, the present invention provides another preferred embodiment in which:
a resistance detection circuit can be added in the chassis electric heating device 400 of the outdoor unit of the air conditioner, the temperature of the chassis electric heating device 400 can be judged by a thermal resistance method, and the icing state of the accessories of the chassis electric heating device 400 can be judged by the temperature change speed of the chassis electric heating device 400. That is, the temperature change rate of the electric heating device 400 when the electric heating device 400 is placed in ice is smaller than the temperature change rate of the electric heating device 400 when the electric heating device 400 is placed in water, and the temperature change rate of the electric heating device 400 when the electric heating device 400 is placed in water is smaller than the temperature change rate of the electric heating device 400 when the electric heating device 400 is placed in air.
Referring to fig. 10, the present invention provides another preferred embodiment in which:
the resistance detection circuit can use voltage detection and current detection to replace, and can calculate the resistance of the electric heater by utilizing ohm's law R=U/I, and the icing state of the outdoor electric heater accessory can be judged by a thermal resistance method. That is, the temperature change rate of the electric heating device 400 when the electric heating device 400 is placed in ice is smaller than the temperature change rate of the electric heating device 400 when the electric heating device 400 is placed in water, and the temperature change rate of the electric heating device 400 when the electric heating device 400 is placed in water is smaller than the temperature change rate of the electric heating device 400 when the electric heating device 400 is placed in air. The voltage detection and the current detection values can be obtained through other non-detection methods, such as directly using a local nominal power supply voltage value, and no actual detection is performed.
In a preferred embodiment, the present application further provides an electronic device, including:
a memory; and a processor, the memory having stored thereon computer readable instructions which when executed by the processor implement the method of controlling the electrical heating system. The computer device may be broadly a server, a terminal, or any other electronic device having the necessary computing and/or processing capabilities. In one embodiment, the computer device may include a processor, memory, network interface, communication interface, etc. connected by a system bus. The processor of the computer device may be used to provide the necessary computing, processing and/or control capabilities. The memory of the computer device may include a non-volatile storage medium and an internal memory. The non-volatile storage medium may have an operating system, computer programs, etc. stored therein or thereon. The internal memory may provide an environment for the operation of the operating system and computer programs in the non-volatile storage media. The network interface and communication interface of the computer device may be used to connect and communicate with external devices via a network. Which when executed by a processor performs the steps of the method of the invention.
The present invention may be implemented as a computer readable storage medium having stored thereon a computer program which, when executed by a processor, causes steps of a method of an embodiment of the present invention to be performed. In one embodiment, the computer program is distributed over a plurality of computer devices or processors coupled by a network such that the computer program is stored, accessed, and executed by one or more computer devices or processors in a distributed fashion. A single method step/operation, or two or more method steps/operations, may be performed by a single computer device or processor, or by two or more computer devices or processors. One or more method steps/operations may be performed by one or more computer devices or processors, and one or more other method steps/operations may be performed by one or more other computer devices or processors. One or more computer devices or processors may perform a single method step/operation or two or more method steps/operations.
Those of ordinary skill in the art will appreciate that the method steps of the present invention may be implemented by a computer program, which may be stored on a non-transitory computer readable storage medium, to instruct related hardware such as a computer device or a processor, which when executed causes the steps of the present invention to be performed. Any reference herein to memory, storage, database, or other medium may include non-volatile and/or volatile memory, as the case may be. Examples of nonvolatile memory include Read Only Memory (ROM), programmable ROM (PROM), electrically Programmable ROM (EPROM), electrically Erasable Programmable ROM (EEPROM), flash memory, magnetic tape, floppy disk, magneto-optical data storage, hard disk, solid state disk, and the like. Examples of volatile memory include Random Access Memory (RAM), external cache memory, and the like.
The technical features described above may be arbitrarily combined. Although not all possible combinations of features are described, any combination of features should be considered to be covered by the description provided that such combinations are not inconsistent.
The above-described embodiments of the present invention do not limit the scope of the present invention. Any other corresponding changes and modifications made in accordance with the technical idea of the present invention shall be included in the scope of the claims of the present invention.
Claims (10)
1. An electrical heating system, comprising:
the detection signal generation module is used for generating a capacitance detection signal;
the capacitance signal acquisition module is electrically connected with the detection signal generation module and is used for processing the capacitance detection signal into a voltage signal;
the control module is electrically connected with the capacitance signal acquisition module and is used for receiving the voltage signal and analyzing the voltage signal to obtain voltage data, judging the environment medium state of the electric heating device according to the voltage data and outputting a corresponding control signal;
and the electric heating device is electrically connected with the control module and is used for executing corresponding control commands according to the control signals.
2. The electrical heating system of claim 1, wherein the detection signal generation module comprises:
a detection signal generation circuit, the detection signal generation circuit comprising: the capacitive detection device comprises a capacitive detection signal generating end, a first capacitor and a capacitive detection signal output end, wherein the capacitive detection signal generating end is connected with one end of the first capacitor, and the other end of the first capacitor is connected with the capacitive detection signal output end.
3. The electrical heating system of claim 2, wherein the capacitive signal acquisition module comprises:
a capacitance signal detection circuit, the capacitance signal detection circuit comprising: the device comprises a capacitor detection signal input end, a second capacitor, a second diode and a voltage signal detection end, wherein the detection signal input end is connected with one end of the second capacitor, the other end of the second capacitor is connected with the anode of the second diode, and the cathode of the second diode is connected with the voltage signal detection end.
4. An electric heating system according to claim 3, further comprising an external power supply, wherein the control module is in control connection with the external power supply and is used for outputting corresponding control signals to control the on-off of the external power supply, the electric heating device comprises a first power supply terminal and a second power supply terminal, the first power supply terminal and the second power supply terminal are connected with the external power supply and are used for supplying power to the electric heating device, the detection signal output end and the detection signal input end are respectively connected with the first power supply terminal and/or the second power supply terminal, or the electric heating device can be arranged in two, and the detection signal output end and the detection signal input end are respectively connected with the first power supply terminal or the second power supply terminal of the two electric heating devices.
5. A method of controlling an electric heating system, the method comprising:
s100, starting a detection signal generation module to generate a capacitance detection signal;
s200, the capacitance signal acquisition module processes the capacitance detection signal into a voltage signal;
s300, the control module receives the voltage signal and analyzes the voltage signal to obtain voltage data, judges the state of an environmental medium in which the electric heating device is positioned according to the voltage data, and outputs a corresponding control signal;
s400, the electric heating device executes corresponding control commands according to the control signals.
6. The method of controlling an electric heating system according to claim 5, wherein S200 includes:
the capacitance detection signal generated by the detection signal generation module is input to the capacitance detection signal input end through the first capacitance and the second capacitance coupling by the capacitance detection signal output end, and the capacitance signal acquisition module processes the capacitance detection signal into a voltage signal.
7. The control method of an electric heating system according to claim 5, wherein S300 includes:
the control module calculates an equivalent capacitance value of an environmental medium in which the electric heating device is positioned according to the voltage data, judges whether the equivalent capacitance value is larger than or equal to a first preset threshold value, if so, judges whether the equivalent capacitance value is larger than or equal to a second preset threshold value, if not, judges that the electric heating device is placed in ice, and outputs a control signal related to controlling the electric heating device to be started.
8. The method of controlling an electric heating system according to claim 7, wherein S300 further comprises:
if the equivalent capacitance value is smaller than a first preset threshold value, the electric heating device is judged to be placed in the air, and a control signal for controlling the electric heating device to be turned off is output.
9. The control method of an electric heating system according to claim 8, wherein S300 further comprises:
if the equivalent capacitance value is larger than or equal to a second preset threshold value, the electric heating device is judged to be placed in water, and a control signal for controlling the electric heating device to maintain the working state unchanged is output.
10. An electronic device, comprising:
a memory; and a processor having stored thereon computer readable instructions which when executed by the processor implement a method of controlling an electrical heating system according to any one of claims 5 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310203255.7A CN116358109A (en) | 2023-03-03 | 2023-03-03 | Electric heating system, control method thereof and electronic equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310203255.7A CN116358109A (en) | 2023-03-03 | 2023-03-03 | Electric heating system, control method thereof and electronic equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN116358109A true CN116358109A (en) | 2023-06-30 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310203255.7A Pending CN116358109A (en) | 2023-03-03 | 2023-03-03 | Electric heating system, control method thereof and electronic equipment |
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| Country | Link |
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| CN (1) | CN116358109A (en) |
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2023
- 2023-03-03 CN CN202310203255.7A patent/CN116358109A/en active Pending
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