CN112261749B - Vehicle defrosting and demisting control circuit and method and vehicle - Google Patents
Vehicle defrosting and demisting control circuit and method and vehicle Download PDFInfo
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- CN112261749B CN112261749B CN202011213582.3A CN202011213582A CN112261749B CN 112261749 B CN112261749 B CN 112261749B CN 202011213582 A CN202011213582 A CN 202011213582A CN 112261749 B CN112261749 B CN 112261749B
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B3/00—Ohmic-resistance heating
- H05B3/84—Heating arrangements specially adapted for transparent or reflecting areas, e.g. for demisting or de-icing windows, mirrors or vehicle windshields
Abstract
The invention belongs to the technical field of vehicle engineering, and discloses a vehicle defrosting and demisting control circuit and method and a vehicle. The defrosting and demisting control circuit for the vehicle comprises a front air window defrosting photoelectric sensor, a front air window temperature sensor, a central controller and a heating module; the front air window defrosting photoelectric sensor acquires a frost/fog thickness signal corresponding to the front air window and transmits the frost/fog thickness signal to the central controller; the front air window temperature sensor acquires a temperature signal corresponding to the front air window and transmits the temperature signal to the central controller; the central controller generates a control signal according to the frost/fog thickness signal and the temperature signal and sends the control signal to the heating module; and the heating module controls the heating module to execute corresponding operation according to the control signal. The central controller can automatically send corresponding control signals to the heating module according to the frost/fog thickness condition and the temperature condition of the front windshield, and the technical problem that the automation degree of the current defrosting and demisting mode of the vehicle is low is solved.
Description
Technical Field
The invention relates to the technical field of vehicle engineering, in particular to a defrosting and demisting control circuit and method for a vehicle and the vehicle.
Background
With the technology of automobiles changing day by day, most automobiles have the functions of defrosting and demisting the front windshield. The function is in rainy day or winter and so on under the too big service environment of difference in temperature in the car, has very big help to driving safety. Outside air temperature is lower and inside uses behind the warm braw function, and inside vapor meets the lower preceding wind window of temperature and releases heat, forms water smoke in the front on wind window internal surface, or the summer of humid climate, and inside uses the air conditioning function, and outside vapor meets the lower preceding wind window of temperature and releases heat, forms water smoke in the front on wind window surface. The defrosting and demisting functions of the existing vehicle are realized by using the air conditioner warm air function, the warm air outlet at the lower part of the front air window blows hot air to the front air window, the front air window is heated, the temperature difference inside and outside the cab is reduced, and defrosting and demisting are realized. Has the following defects: the efficiency is low through an air conditioner heating defrosting mode, and an engine needs to be started to have a certain temperature; the existing defrosting and demisting modes are manually opened and closed, and the defrosting and demisting air volume is adjusted.
The above is only for the purpose of assisting understanding of the technical aspects of the present invention, and does not represent an admission that the above is prior art.
Disclosure of Invention
The invention mainly aims to provide a vehicle defrosting and demisting method, a vehicle defrosting and demisting device, vehicle defrosting and demisting equipment and a storage medium, and aims to solve the technical problem that the automation degree of the current vehicle defrosting and demisting mode is low.
In order to achieve the purpose, the invention provides a defrosting and demisting control circuit for a vehicle, which comprises a front air window defrosting photoelectric sensor, a front air window temperature sensor, a central controller and a heating module, wherein the front air window defrosting photoelectric sensor and the front air window temperature sensor are connected with the central controller, and the central controller is connected with the heating module;
the front air window defrosting photoelectric sensor is used for acquiring a frost/fog thickness signal corresponding to the front air window and transmitting the frost/fog thickness signal to the central controller;
the front air window temperature sensor is used for acquiring a temperature signal corresponding to the front air window and transmitting the temperature signal to the central controller;
the central controller is used for generating a control signal according to the frost/fog thickness signal and the temperature signal and sending the control signal to the heating module;
and the heating module is used for controlling the heating module to execute corresponding operation according to the control signal.
Optionally, the heating module comprises a relay and a heating unit;
the first end of the relay is connected with the central controller, the second end of the relay is connected with the first end of the heating unit, and the second end of the heating unit is grounded;
and the relay is used for receiving the control signal and controlling the heating unit to be switched on or switched off according to the control signal.
Optionally, the number of the relays and the number of the heating units are multiple and are in one-to-one correspondence;
the central controller is also used for determining the grade to be heated according to the frost/fog thickness signal and the temperature signal and sending a heating control signal to a target relay according to the grade to be heated;
and the target relay is used for receiving the heating control signal and controlling the starting of the target heating unit according to the heating control signal.
Optionally, the heating unit is a heating wire, and the heating coefficient of each heating wire is different.
Optionally, the heated wire is embedded in the front windscreen in layers.
Optionally, the central controller is further configured to receive, after a preset time, a current front frost/fog thickness signal sent by the front air window defrosting photoelectric sensor and a current temperature signal sent by the front air window temperature sensor;
determining a heating level to be adjusted according to the current frost/fog thickness signal and the current temperature signal, and sending a stop control signal to the target relay when the heating level to be adjusted is not the heating level to be adjusted;
sending a heating adjusting control signal to a preset relay according to the heating level to be adjusted;
the target relay is also used for receiving the stop control signal and controlling the target heating unit to be closed according to the stop control signal;
the preset relay is used for receiving the adjusting heating control signal and controlling the opening of the preset heating unit according to the adjusting heating control signal.
Optionally, the central controller is further configured to determine a thickness value according to the frost/fog thickness signal, and determine a temperature value according to the temperature signal;
when the thickness value is smaller than or equal to a preset thickness value and the temperature value reaches a preset temperature value, a heating stop control signal is obtained and sent to the relay;
and the relay is used for receiving the heating stop control signal and controlling the heating unit to be closed according to the heating stop control signal.
Optionally, the vehicle defrosting and defogging control circuit further comprises a starting switch, a first end of the starting switch is connected with a preset power supply, and a second end of the starting switch is respectively connected with the central controller and the relay;
and the starting switch is used for starting the central controller and the relay according to the starting signal when the starting signal is received.
In addition, to achieve the above object, the present invention further provides a vehicle defrosting and defogging control method, which is applied to the vehicle defrosting and defogging control circuit as described above, wherein the vehicle defrosting and defogging control circuit includes a front windshield defrosting photoelectric sensor, a front windshield temperature sensor, a center controller, and a heating module, and the vehicle defrosting and defogging control method includes:
the front air window defrosting photoelectric sensor acquires a frost/fog thickness signal corresponding to the front air window and transmits the frost/fog thickness signal to the central controller;
the front air window temperature sensor acquires a temperature signal corresponding to the front air window and transmits the temperature signal to the central controller;
the central controller generates a control signal according to the frost/fog thickness signal and the temperature signal and sends the control signal to the heating module;
and the heating module controls the heating module to execute corresponding operation according to the control signal.
In addition, in order to achieve the above object, the present invention also provides a vehicle, which is characterized by comprising the vehicle defrosting and demisting control circuit.
The invention discloses a defrosting and demisting control circuit for a vehicle, which comprises a front air window defrosting photoelectric sensor, a front air window temperature sensor, a central controller and a heating module, wherein the front air window defrosting photoelectric sensor and the front air window temperature sensor are connected with the central controller; the front air window defrosting photoelectric sensor acquires a frost/fog thickness signal corresponding to the front air window and transmits the frost/fog thickness signal to the central controller; the front air window temperature sensor acquires a temperature signal corresponding to the front air window and transmits the temperature signal to the central controller; the central controller generates a control signal according to the frost/fog thickness signal and the temperature signal and sends the control signal to the heating module; and the heating module controls the heating module to execute corresponding operation according to the control signal. The central controller can automatically send corresponding control signals to the heating modules according to the frost/fog thickness condition and the temperature condition of the front windshield, so that the heating modules are controlled to automatically execute corresponding operations, manual control of a driver is not needed, and the technical problem that the automation degree of the current vehicle defrosting and demisting mode is low is solved.
Drawings
FIG. 1 is a functional block diagram of an embodiment of a vehicle defrost defogging control circuit according to the present invention;
FIG. 2 is a first schematic diagram of a circuit configuration of a defrosting and defogging control circuit for a vehicle according to an embodiment of the present invention;
FIG. 3 is a second schematic diagram of a circuit configuration of an embodiment of a defrosting and defogging control circuit for a vehicle according to the present invention;
FIG. 4 is a schematic diagram of a heating unit layout according to an embodiment of the defrosting and defogging control circuit for a vehicle of the present invention;
FIG. 5 is a flowchart illustrating a first exemplary embodiment of a defrosting and defogging control method for a vehicle according to the present invention.
The reference numbers illustrate:
| reference numerals | Name (R) | Reference numerals | Name (R) |
| 10 | Front air window defrosting |
50 | Relay with a |
| 20 | Front |
60 | |
| 30 | |
70 | |
| 40 | Heating module |
The implementation, functional features and advantages of the objects of the present invention will be further explained with reference to the accompanying drawings.
Detailed Description
It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
An embodiment of the present invention provides a defrosting and defogging control circuit for a vehicle, and referring to fig. 1, fig. 1 is a functional block diagram of an embodiment of the defrosting and defogging control circuit for a vehicle according to the present invention.
In this embodiment, the defrosting and defogging control circuit for a vehicle includes a front windshield defrosting photoelectric sensor 10, a front windshield temperature sensor 20, a central controller 30 and a heating module 40, wherein the front windshield defrosting photoelectric sensor 10 and the front windshield temperature sensor 20 are connected with the central controller 30, and the central controller 30 is connected with the heating module 40;
the front window defrosting photoelectric sensor 10 is configured to collect a frost/mist thickness signal corresponding to the front window, and transmit the frost/mist thickness signal to the central controller 30. In the present embodiment, the photoelectric sensor 10 is a device for detecting the distance to an object and the presence or absence of an object by using a light emitter (which may be an infrared light emitter) and a photoelectric receiver. The front window defrosting photoelectric sensor 10 is mounted on the front window and is configured to sense a thickness signal of frost/fog on the front window, where the thickness signal may include whether frost/fog exists on the front window and frost/fog thickness information.
The front windshield temperature sensor 20 is configured to collect a temperature signal corresponding to the front windshield and transmit the temperature signal to the central controller 30. In this embodiment, the front windshield temperature sensor 20 is mounted on the front windshield and is configured to sense a temperature of a surface of the front windshield.
The central controller 30 is configured to generate a control signal according to the frost/fog thickness signal and the temperature signal, and send the control signal to the heating module 40. In this embodiment, the central controller 30 may be a Body Controller (BCM), an on-board computer (ECU), or a Micro Controller Unit (MCU) separately installed in the vehicle, which is not limited in this embodiment. The central controller 30 performs condition analysis according to the frost/fog thickness signal and the temperature signal to generate a corresponding control signal, for example, the temperature inside the vehicle is 15 degrees, the temperature outside the vehicle is 3 degrees, the front windshield defrosting photoelectric sensor 10 detects fog on the front windshield, the temperature sensor 20 collects the temperature of the front windshield to be 3 degrees, the MCU performs analysis to generate a heating signal, and the heating module 40 heats the front windshield according to the heating signal to balance the temperature of the front windshield with the temperature inside and outside the vehicle, thereby achieving defrosting and defogging.
The heating module 40 is configured to control the heating module 40 to execute a corresponding operation according to the control signal. In this embodiment, the heating module 40 may be a vehicle-mounted air conditioner, or may be a heating device, such as a heating wire, which is not limited in this embodiment.
It should be noted that the automatic heating process of the present embodiment is specifically described by taking two cases as examples:
the first case is: the central controller 30 is a vehicle-mounted computer, the heating module 40 is an air conditioner, frost/fog is collected on the front air window by the front air window defrosting photoelectric sensor 10, the temperature of the front air window is collected by the front air window temperature sensor 20, the vehicle-mounted computer determines the heating temperature corresponding to the air conditioner according to the temperature of the front air window and the frost/fog thickness, and sends out a heating control signal so as to control the air conditioner to heat the front air window. When the temperature of the front air window reaches a certain degree and the front air window defrosting photoelectric sensor 10 collects that the front air window is frostless/foggy, the vehicle-mounted computer sends a heating stopping signal to control the air conditioner to be closed.
The second case is: the central controller 30 is an MCU, the heating module 40 comprises a heating wire, frost/fog exists on the front air window collected by the front air window defrosting photoelectric sensor 10, the front air window temperature is collected by the front air window temperature sensor 20, and the MCU sends out a heating control signal according to the front air window temperature and the frost/fog thickness to control the heating wire to heat the front air window. When the temperature of the front air window reaches a certain degree and the front air window defrosting photoelectric sensor 10 collects that frost/fog does not exist on the front air window, the MCU sends a heating stop signal to heat the metal wire to stop heating.
In the embodiment, the front air window defrosting photoelectric sensor acquires a frost/fog thickness signal corresponding to the front air window, and transmits the frost/fog thickness signal to the central controller; the front air window temperature sensor acquires a temperature signal corresponding to the front air window and transmits the temperature signal to the central controller; the central controller generates a control signal according to the frost/fog thickness signal and the temperature signal and sends the control signal to the heating module; and the heating module controls the heating module to execute corresponding operation according to the control signal. The central controller can automatically send corresponding control signals to the heating modules according to the frost/fog thickness condition and the temperature condition of the front windshield, so that the heating modules are controlled to automatically execute corresponding operations, manual control of a driver is not needed, and the technical problem that the automation degree of the current vehicle defrosting and demisting mode is low is solved.
Further, referring to fig. 2, fig. 2 is a first schematic diagram of a circuit structure of an embodiment of the defrosting and defogging control circuit for a vehicle according to the present invention; the heating module 40 includes a relay 50 and a heating unit 60;
a first end of the relay 50 is connected with the central controller 30, a second end of the relay 50 is connected with a first end of the heating unit 60, and a second end of the heating unit 60 is grounded;
the relay 50 is configured to receive the control signal, and control the heating unit 60 to be turned on or off according to the control signal. In this embodiment, the process of the central controller 30 sending the control signal to the relay 50 may be to turn on or off the controlled output circuit when the control signal (such as voltage, current, temperature, etc.) reaches a specified value, thereby controlling the heating unit 60 to be turned on or off.
Further, in order to save resources when the front windshield is frostless and fog, the heating unit 60 is automatically turned off after heating is completed, and the central controller 30 is further configured to determine a thickness value according to the frost/fog thickness signal and determine a temperature value according to the temperature signal. In this embodiment, the front windshield defrosting photoelectric sensor 10 and the front windshield temperature sensor 20 are installed on the front windshield, fig. 2 is a schematic view, and the position of the front windshield can be set according to actual conditions, which is not limited in this embodiment.
And when the thickness value is smaller than or equal to a preset thickness value and the temperature value reaches a preset temperature value, obtaining a heating stop control signal and sending the heating stop control signal to the relay 50. In this embodiment, the preset temperature value is a preset temperature at which the front windshield can be frostless/fogged, may be a frostless/fogged temperature range, and the preset thickness value may be 0 or may be other thickness values that do not affect the sight line. In practical applications, if the heating module 40 is in operation and the sensor feeds back information about the surface of the front windshield, the central controller 30 sends a heating stop control signal to control the heating module 40 to stop heating when it is determined that the heating module does not need to continue heating.
The relay 50 is configured to receive the heating stop control signal, and control the heating unit 60 to be turned off according to the heating stop control signal. In the present embodiment, the relay 50 opens the controlled output circuit, thereby controlling the turning off of the heating unit 60.
Further, in order to control the vehicle defrosting and defogging control circuit and prevent the waste of resources under the condition that defrosting and defogging are not needed, the vehicle defrosting and defogging control circuit further comprises a starting switch 70, a first end of the starting switch 70 is connected with a preset power supply, and a second end of the starting switch is respectively connected with the central controller 30 and the relay 50. In this embodiment, the preset power supply may be a vehicle circuit power supply, or may be a power supply external to the vehicle, and fig. 2 illustrates a 24V vehicle circuit as an example.
The starting switch 70 is configured to start the central controller 30 and the relay 50 according to a starting signal when the starting signal is received. In this embodiment, after the user presses the switch 70, the central controller 30 and the relay 50 are powered on, the central controller 30 controls the front windshield defrosting photoelectric sensor 10 and the front windshield temperature sensor 20 to be powered on, the photoelectric sensor 10 and the temperature sensor 20 serve as detection units to feed back information on the surface of the front windshield glass, the central controller 30 receives data transmitted by the sensors, obtains and outputs a corresponding instruction through recognition and operation, and drives the heating unit 60 by outputting a level signal to the relay 50.
The heating module of this embodiment includes relay and heating element, and central controller can send corresponding control signal to the relay through the frost/fog thickness condition and the temperature condition of preceding wind window automatically to control opening and closing of heating element, when the temperature of preceding wind window is surpassed a definite value to current wind window temperature sensor perception, combine the thickness signal, close the heating module by central controller, play self-closing's function, the technical problem that current vehicle defrosting defogging mode degree of automation is low has been solved.
Further, referring to fig. 3, fig. 3 is a second schematic diagram of a circuit structure of an embodiment of the defrosting and defogging control circuit for a vehicle according to the present invention; the number of the relays 50 and the heating units 60 is multiple, and the relays correspond to the heating units one by one;
the central controller 30 is further configured to determine a level to be heated according to the frost/fog thickness signal and the temperature signal, and send a heating control signal to a target relay according to the level to be heated. In this embodiment, the number of the relays 50 and the heating units 60 may be set according to actual conditions, and fig. 3 illustrates four relays 50 and four heating units 60, where the relays include a first relay, a second relay, a third relay, and a fourth relay, and the heating units include a first heating unit, a second heating unit, a third heating unit, and a fourth heating unit. It is understood that the photo sensor 10 and the temperature sensor 20 disposed on the front windshield are detection units, the main switch 70 and the central controller 30 are control units, and the four independent relays 50 and the four heating units 60 are execution units. The target relay refers to the relay 50 corresponding to the level to be heated, and the target relay may be one of the first relay, the second relay, the third relay, and the fourth relay, or a plurality of the first relay, the second relay, the third relay, and the fourth relay. In a specific implementation, the total number of the relays 50 and the heating units 60 is N, the heating intensities corresponding to the N heating units 60 are different, the target relay is one of the N relays 50, the heating intensities corresponding to the N heating units 60 are the same, the target relays are M of the N relays 50, and the M heating units 60 can reach the level to be heated when operating together.
And the target relay is used for receiving the heating control signal and controlling the starting of the target heating unit according to the heating control signal. In this embodiment, the target heating unit may be one of the first heating unit, the second heating unit, the third heating unit, and the fourth heating unit, or may be a plurality of the first heating unit, the second heating unit, the third heating unit, and the fourth heating unit, and when the target relay is the first relay, the target heating unit is the first heating unit.
Further, in order to perform heating in different stages and realize automatic heating in real time, the heating unit 60 is a heating wire, and the heating coefficient of each heating wire is different. In this embodiment, the heating unit 60 is implemented by heating wires, and can be heated when the vehicle is powered on.
Further, in order to make the heating more uniform and not affect the actual use of the vehicle, the heating wire is embedded in the front windshield in layers. In this embodiment, the staged heating unit 60 is heated by using a plurality of invisible heating wires, and the invisible heating wires are embedded into the front windshield glass in a layered manner, and may be invisible tungsten wires.
Referring to fig. 4, fig. 4 is a schematic layout diagram of a heating unit 60 according to an embodiment of the control circuit for defrosting and defogging of a vehicle of the present invention, in a specific implementation, specific layout of heating wires may be set according to actual conditions, and fig. 4 is a schematic layout diagram of four heating wires on a front windshield. In the figure, the k1 heating wire, the k2 heating wire, the k3 heating wire and the k4 heating wire are used to distinguish them from each other.
It should be noted that, according to the control signal of the central controller 30, the opening and closing of the multiple loop staged heating units 60 are realized, so as to avoid energy waste caused by human factors.
Further, in order to realize full automation of the heating module 40, so that the heating module 40 can automatically operate according to actual conditions, the central controller 30 is further configured to receive, after a preset time, a current frost/mist thickness signal sent by the front windshield defrosting photoelectric sensor 10 and a current temperature signal sent by the front windshield temperature sensor 20;
and determining the heating level to be adjusted according to the current frost/fog thickness signal and the current temperature signal, and sending a stop control signal to the target relay when the heating level to be adjusted is not the heating level to be adjusted. In this embodiment, the preset time is set in advance according to actual requirements, for example, the sensor may perform information feedback every 20S, and the central controller 30 adjusts the heating unit 60 in real time according to the information fed back in real time until the central controller 30 automatically stops the heating process after the heating effect is achieved. Therefore, the safety and reliability of the whole heating process can be ensured to the maximum extent, and the energy consumption is effectively reduced.
And sending a heating adjusting control signal to a preset relay according to the heating level to be adjusted. In this embodiment, the preset relay may be one of the first relay, the second relay, the third relay and the fourth relay, or may be a plurality of the first relay, the second relay, the third relay and the fourth relay. When the target relay is the first relay, the preset relay may be one of a second relay, a third relay, and a fourth relay.
The target relay is also used for receiving the stop control signal and controlling the target heating unit to be closed according to the stop control signal. In the present embodiment, the target relay is the relay 50 corresponding to the heating unit 60 that is originally turned on.
The preset relay is used for receiving the adjusting heating control signal and controlling the opening of the preset heating unit according to the adjusting heating control signal. In this embodiment, the preset relay refers to the relay 50 corresponding to the adjusted heating level, and after the preset heating unit is turned on, the desired heating effect can be achieved. The specific adjustment process is illustrated by way of example, the MCU acquires a first thickness value and a first temperature value through a sensor of the front windshield, determines that the heating level is a first heating level, determines that a target relay corresponding to the first heating level is a first relay, and determines that the target heating unit is a first heating unit, and the MCU sends a level signal to the first relay so that the first relay drives the first heating unit; after 20S, the MCU acquires the second thickness value and the second temperature value again through the sensor of the front windshield, the heating level is determined to be the second heating level at the moment, namely, the heating level to be adjusted is not the heating level to be adjusted, the preset relay corresponding to the second heating level is the second relay, the preset heating unit is the second heating unit, the MCU sends a level signal to the first relay, so that the first relay drives the first heating unit, the first heating level is closed, the MCU sends the level signal to the second relay, so that the second relay drives the second heating unit, and the second heating level is opened.
The relay and the heating unit that this embodiment passed through are a plurality ofly, central controller confirms the rank of waiting to heat according to frost/fog thickness signal and temperature signal, send the heating control signal to the target relay according to the rank of waiting to heat to control opening of target heating unit, realized carrying out hierarchical heating according to preceding wind window actual conditions, solved the technical problem that current vehicle defrosting defogging mode degree of automation is low, and adopt the heating wire to heat, do not need the engine to start to have a certain temperature, can heat after the vehicle is electrified.
Referring to fig. 5, fig. 5 is a flowchart illustrating a first embodiment of a defrosting and defogging control method for a vehicle according to the present invention.
As shown in fig. 5, the vehicle defrosting and defogging control method is applied to the vehicle defrosting and defogging control circuit as described above, wherein the vehicle defrosting and defogging control circuit comprises a front windshield defrosting photoelectric sensor, a front windshield temperature sensor, a central controller and a heating module, and the vehicle defrosting and defogging control method comprises the following steps:
step S10: the front air window defrosting photoelectric sensor collects a frost/fog thickness signal corresponding to the front air window and transmits the frost/fog thickness signal to the central controller.
It is understood that the photo sensor is a device for detecting the distance of an object and the presence of the object by using a light emitter (which may be an infrared light emitter) and a photo receiver. The front air window defrosting photoelectric sensor is mounted on the front air window and used for sensing a thickness signal of frost/fog on the front air window, and the thickness signal can comprise whether the front air window has frost/fog and frost/fog thickness information.
Step S20: the front air window temperature sensor collects a temperature signal corresponding to the front air window and transmits the temperature signal to the central controller.
It will be appreciated that the front windshield temperature sensor is mounted to the front windshield for sensing the temperature of the front windshield surface.
Step S30: and the central controller generates a control signal according to the frost/fog thickness signal and the temperature signal and sends the control signal to the heating module.
The central controller may be a Body Controller (BCM), an on-board computer (ECU), or a Micro Control Unit (MCU) separately installed in the vehicle, which is not limited in this embodiment. The central controller analyzes the condition according to the frost/fog thickness signal and the temperature signal to generate a corresponding control signal, for example, the temperature in the vehicle is 15 degrees, the temperature outside the vehicle is 3 degrees, the front air window defrosting photoelectric sensor detects that fog exists on the front air window, the temperature sensor collects the temperature of the front air window to be 3 degrees, the MCU analyzes the control signal to generate a heating signal, and the heating module heats the front air window according to the heating signal to balance the temperature of the front air window with the temperature inside and outside the vehicle, so that defrosting and demisting are realized.
Step S40: and the heating module controls the heating module to execute corresponding operation according to the control signal.
It is understood that the heating module may be an on-board air conditioner, or may be a heating device, such as a heating wire, which is not limited in this embodiment.
It should be noted that the automatic heating process of the present embodiment is specifically described by taking two cases as examples:
the first case is: the central controller is a vehicle-mounted computer, the heating module is an air conditioner, frost/fog is collected on the front air window by the front air window defrosting photoelectric sensor, the temperature of the front air window is collected by the front air window temperature sensor, the vehicle-mounted computer determines the heating temperature corresponding to the air conditioner according to the temperature of the front air window and the frost/fog thickness, and sends a heating control signal to control the air conditioner to heat the front air window. When the temperature of the front air window reaches a certain degree and the front air window defrosting photoelectric sensor acquires that the front air window is frostless/foggy, the vehicle-mounted computer sends a heating stopping signal to control the air conditioner to be closed.
The second case is: the central controller is an MCU (microprogrammed control unit), the heating module comprises a heating metal wire, frost/fog exists on the front air window after the front air window defrosting photoelectric sensor collects frost/fog, the front air window temperature sensor collects the temperature of the front air window, and the MCU sends a heating control signal according to the temperature of the front air window and the thickness of the frost/fog to control the heating metal wire to heat the front air window. When the temperature of the front air window reaches a certain degree and the front air window defrosting photoelectric sensor acquires that the front air window is frostless/foggy, the MCU sends a heating stopping signal to heat the metal wire to stop heating.
It should be understood that the above is only an example, and the technical solution of the present invention is not limited in any way, and in a specific application, a person skilled in the art may set the technical solution as needed, and the present invention is not limited thereto.
In the embodiment, a frost/fog thickness signal and a temperature signal corresponding to a front windshield are obtained; and generating a control signal according to the frost/fog thickness signal and the temperature signal, and sending the control signal to a heating module so as to control the heating module to execute corresponding operation. The central controller can automatically send corresponding control signals to the heating modules according to the frost/fog thickness condition and the temperature condition of the front windshield, so that the heating modules are controlled to automatically execute corresponding operations, manual control of a driver is not needed, and the technical problem that the automation degree of the current vehicle defrosting and demisting mode is low is solved.
It should be noted that the above-described work flows are only exemplary, and do not limit the scope of the present invention, and in practical applications, a person skilled in the art may select some or all of them to achieve the purpose of the solution of the embodiment according to actual needs, and the present invention is not limited herein.
In an embodiment, the heating module comprises a relay and a heating unit;
the first end of the relay is connected with the central controller, the second end of the relay is connected with the first end of the heating unit, and the second end of the heating unit is grounded;
the heating module controls the heating module to execute corresponding operation according to the control signal, and the operation comprises the following steps:
the relay receives the control signal and controls the heating unit to be turned on or off according to the control signal.
In one embodiment, the relays and the heating units are multiple and are in one-to-one correspondence;
the central controller generates a control signal according to the frost/fog thickness signal and the temperature signal, and sends the control signal to the heating module, and the central controller comprises:
the central controller determines the grade to be heated according to the frost/fog thickness signal and the temperature signal, and sends a heating control signal to a target relay according to the grade to be heated;
correspondingly, the relay receives the control signal, and controls the heating unit to be turned on or off according to the control signal, and the method comprises the following steps:
and the target relay receives the heating control signal and controls the starting of the target heating unit according to the heating control signal.
In an embodiment, after the heating module controls the heating module to perform the corresponding operation according to the control signal, the method further includes:
the central controller receives a current front frost/fog thickness signal sent by the front air window defrosting photoelectric sensor and a current temperature signal sent by the front air window temperature sensor after preset time;
determining a heating level to be adjusted according to the current frost/fog thickness signal and the current temperature signal, and sending a stop control signal to the target relay when the heating level to be adjusted is not the heating level to be adjusted;
sending a heating adjusting control signal to a preset relay according to the heating level to be adjusted;
the target relay receives the stop control signal and controls the target heating unit to be closed according to the stop control signal;
and the preset relay receives the adjusting heating control signal and controls the opening of the preset heating unit according to the adjusting heating control signal.
In one embodiment, the central controller generates a control signal according to the frost/fog thickness signal and the temperature signal, and sends the control signal to the heating module, including:
the central controller determines a thickness value according to the frost/fog thickness signal and determines a temperature value according to the temperature signal;
when the thickness value is smaller than or equal to a preset thickness value and the temperature value reaches a preset temperature value, a heating stop control signal is obtained and sent to the relay;
correspondingly, the relay receives the control signal, and controls the heating unit to be turned on or off according to the control signal, and the method comprises the following steps:
and the relay receives the heating stop control signal and controls the heating unit to be closed according to the heating stop control signal.
In an embodiment, the vehicle defrosting and defogging control circuit further comprises a starting switch, a first end of the starting switch is connected with a preset power supply, and a second end of the starting switch is respectively connected with the central controller and the relay;
the method further comprises the following steps that before the front air window defrosting photoelectric sensor collects a frost/fog thickness signal corresponding to a front air window and transmits the frost/fog thickness signal to the central controller, the method further comprises the following steps:
and when the starting switch receives a starting signal, the central controller and the relay are started according to the starting signal.
In addition, the technical details that are not elaborated in this embodiment can be referred to the vehicle defrosting and defogging control circuit provided in any embodiment of the present invention, and are not described herein again.
In addition, the embodiment of the invention also provides a vehicle, and the vehicle comprises the vehicle defrosting and demisting control circuit.
Further, it is to be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or system that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or system. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a process, method, article, or system that comprises the element.
The above-mentioned serial numbers of the embodiments of the present invention are merely for description and do not represent the merits of the embodiments.
Through the above description of the embodiments, those skilled in the art will clearly understand that the method of the above embodiments can be implemented by software plus a necessary general hardware platform, and certainly can also be implemented by hardware, but in many cases, the former is a better implementation manner. Based on such understanding, the technical solution of the present invention or portions thereof that contribute to the prior art may be embodied in the form of a software product, where the computer software product is stored in a storage medium (e.g. Read Only Memory (ROM)/RAM, magnetic disk, optical disk), and includes several instructions for enabling a terminal device (e.g. a mobile phone, a computer, a server, or a network device) to execute the method according to the embodiments of the present invention.
The above description is only a preferred embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications of equivalent structures and equivalent processes, which are made by using the contents of the present specification and the accompanying drawings, or directly or indirectly applied to other related technical fields, are included in the scope of the present invention.
Claims (7)
1. A defrosting and demisting control circuit for a vehicle is characterized by comprising a front air window defrosting photoelectric sensor, a front air window temperature sensor, a central controller and a heating module, wherein the front air window defrosting photoelectric sensor and the front air window temperature sensor are connected with the central controller, and the central controller is connected with the heating module;
the front air window defrosting photoelectric sensor is used for acquiring a frost/fog thickness signal corresponding to the front air window and transmitting the frost/fog thickness signal to the central controller;
the front air window temperature sensor is used for acquiring a temperature signal corresponding to the front air window and transmitting the temperature signal to the central controller;
the central controller is used for generating a control signal according to the frost/fog thickness signal and the temperature signal and sending the control signal to the heating module;
the heating module is used for controlling the heating module to execute corresponding operation according to the control signal;
wherein the heating module comprises a relay and a heating unit;
the first end of the relay is connected with the central controller, the second end of the relay is connected with the first end of the heating unit, and the second end of the heating unit is grounded;
the relay is used for receiving the control signal and controlling the heating unit to be switched on or switched off according to the control signal;
the relays and the heating units are multiple and correspond to each other one by one;
the central controller is also used for determining the grade to be heated according to the frost/fog thickness signal and the temperature signal and sending a heating control signal to a target relay according to the grade to be heated;
the target relay is used for receiving the heating control signal and controlling the starting of a target heating unit according to the heating control signal;
the central controller is further used for receiving a current frost/fog thickness signal sent by the front air window defrosting photoelectric sensor and a current temperature signal sent by the front air window temperature sensor after preset time;
determining a heating level to be adjusted according to the current frost/fog thickness signal and the current temperature signal, and sending a stop control signal to the target relay when the heating level to be adjusted is not the heating level to be adjusted;
sending a heating adjusting control signal to a preset relay according to the heating level to be adjusted;
the target relay is also used for receiving the stop control signal and controlling the target heating unit to be closed according to the stop control signal;
the preset relay is used for receiving the adjusting heating control signal and controlling the opening of the preset heating unit according to the adjusting heating control signal.
2. The vehicle defrost defogging control circuit according to claim 1 wherein said heating elements are heating wires and each heating wire has a different heating coefficient.
3. The vehicle defrost defogging control circuit according to claim 2 wherein said heater wire is layered and embedded within said front windshield.
4. The vehicle defrost defogging control circuit according to claim 1 wherein said central controller is further adapted to determine a thickness value based on said frost/fog thickness signal and a temperature value based on said temperature signal;
when the thickness value is smaller than or equal to a preset thickness value and the temperature value reaches a preset temperature value, a heating stop control signal is obtained and sent to the relay;
and the relay is used for receiving the heating stop control signal and controlling the heating unit to be closed according to the heating stop control signal.
5. The vehicle defrost defogging control circuit according to claim 1, further comprising a start switch, a first end of said start switch being connected to a predetermined power source, a second end of said start switch being connected to said central controller and said relay, respectively;
and the starting switch is used for starting the central controller and the relay according to the starting signal when the starting signal is received.
6. A vehicle defrosting and defogging control method applied to a vehicle defrosting and defogging control circuit as set forth in any one of claims 1 to 5, wherein the vehicle defrosting and defogging control circuit includes a front windshield defrosting photoelectric sensor, a front windshield temperature sensor, a center controller, and a heating module, and wherein the vehicle defrosting and defogging control method comprises:
the front air window defrosting photoelectric sensor acquires a frost/fog thickness signal corresponding to the front air window and transmits the frost/fog thickness signal to the central controller;
the front air window temperature sensor acquires a temperature signal corresponding to the front air window and transmits the temperature signal to the central controller;
the central controller generates a control signal according to the frost/fog thickness signal and the temperature signal and sends the control signal to the heating module;
the heating module controls the heating module to execute corresponding operation according to the control signal;
wherein the heating module comprises a relay and a heating unit;
the first end of the relay is connected with the central controller, the second end of the relay is connected with the first end of the heating unit, and the second end of the heating unit is grounded;
the heating module controls the heating module to execute corresponding operation according to the control signal, and the operation comprises the following steps:
the relay receives the control signal and controls the heating unit to be turned on or off according to the control signal;
the relays and the heating units are multiple and correspond to each other one by one;
the central controller generates a control signal according to the frost/fog thickness signal and the temperature signal, and sends the control signal to the heating module, and the central controller comprises:
the central controller determines the grade to be heated according to the frost/fog thickness signal and the temperature signal, and sends a heating control signal to a target relay according to the grade to be heated;
correspondingly, the relay receives the control signal, and controls the heating unit to be turned on or off according to the control signal, and the method comprises the following steps:
the target relay receives the heating control signal and controls the starting of a target heating unit according to the heating control signal;
after the heating module controls the heating module to execute corresponding operations according to the control signal, the method further includes:
the central controller receives a current frost/fog thickness signal sent by the front air window defrosting photoelectric sensor and a current temperature signal sent by the front air window temperature sensor after preset time;
determining a heating level to be adjusted according to the current frost/fog thickness signal and the current temperature signal, and sending a stop control signal to the target relay when the heating level to be adjusted is not the heating level to be adjusted;
sending a heating adjusting control signal to a preset relay according to the heating level to be adjusted;
the target relay receives the stop control signal and controls the target heating unit to be closed according to the stop control signal;
and the preset relay receives the adjusting heating control signal and controls the opening of the preset heating unit according to the adjusting heating control signal.
7. A vehicle characterized by comprising the vehicle defrosting and defogging control circuit according to any one of claims 1 to 5.
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| CN202011213582.3A CN112261749B (en) | 2020-11-02 | 2020-11-02 | Vehicle defrosting and demisting control circuit and method and vehicle |
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| CN202011213582.3A CN112261749B (en) | 2020-11-02 | 2020-11-02 | Vehicle defrosting and demisting control circuit and method and vehicle |
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| DE102021111260A1 (en) * | 2021-04-30 | 2022-11-03 | Infrasolid Gmbh | Thermal radiation source and method for measuring the exact temperature and/or radiated power of the thermal radiation source |
| CN114030335A (en) * | 2021-11-03 | 2022-02-11 | 珠海格力电器股份有限公司 | Automatic control method and device for air conditioner |
| CN115027223A (en) * | 2022-06-24 | 2022-09-09 | 中国第一汽车股份有限公司 | Vehicle window deicing system, method, storage medium and automobile |
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| SE516845C2 (en) * | 2000-07-10 | 2002-03-12 | Volvo Teknisk Utveckling Ab | Anordning och metod för automatisk defroster i bilar |
| CN201751249U (en) * | 2010-06-22 | 2011-02-23 | 浙江吉利汽车研究院有限公司 | Controller for removing fog on automobile glass |
| CN205022537U (en) * | 2015-08-24 | 2016-02-10 | 浙江吉利汽车研究院有限公司 | Vehicle air conditioner automatic defrosting defogging controlling means |
| CN205022545U (en) * | 2015-09-17 | 2016-02-10 | 北汽福田汽车股份有限公司 | On -vehicle electrical heating defogging defroster and have its vehicle |
| CN106427901B (en) * | 2016-11-30 | 2019-02-22 | 南京汽车集团有限公司 | A kind of cartborne ultrasound wave demisting defroster and its control method |
| CN206734262U (en) * | 2017-03-27 | 2017-12-12 | 西京学院 | A kind of vehicle wiper removes defrosting system |
| CN210363728U (en) * | 2019-08-02 | 2020-04-21 | 福建省汽车工业集团云度新能源汽车股份有限公司 | Defogging device for window glass |
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