CN113997750B - Power switch trigger control method, controller and control system of automobile air conditioner - Google Patents
Power switch trigger control method, controller and control system of automobile air conditioner Download PDFInfo
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- CN113997750B CN113997750B CN202111263301.XA CN202111263301A CN113997750B CN 113997750 B CN113997750 B CN 113997750B CN 202111263301 A CN202111263301 A CN 202111263301A CN 113997750 B CN113997750 B CN 113997750B
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- 238000000034 method Methods 0.000 title claims abstract description 33
- 238000001514 detection method Methods 0.000 claims abstract description 143
- 230000001960 triggered effect Effects 0.000 claims abstract description 29
- 238000004088 simulation Methods 0.000 claims abstract description 10
- 238000004891 communication Methods 0.000 claims abstract description 7
- 238000004378 air conditioning Methods 0.000 claims 1
- 230000036039 immunity Effects 0.000 description 3
- 230000008569 process Effects 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000004064 dysfunction Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 230000006870 function Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
- B60H1/00—Heating, cooling or ventilating [HVAC] devices
- B60H1/00421—Driving arrangements for parts of a vehicle air-conditioning
- B60H1/00428—Driving arrangements for parts of a vehicle air-conditioning electric
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
- B60H1/00—Heating, cooling or ventilating [HVAC] devices
- B60H1/00642—Control systems or circuits; Control members or indication devices for heating, cooling or ventilating devices
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/80—Technologies aiming to reduce greenhouse gasses emissions common to all road transportation technologies
- Y02T10/88—Optimized components or subsystems, e.g. lighting, actively controlled glasses
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- Thermal Sciences (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Air-Conditioning For Vehicles (AREA)
Abstract
The invention relates to the technical field of automobile air conditioner control, and particularly discloses a power switch triggering control method of an automobile air conditioner, wherein the power switch of the automobile air conditioner is in communication connection with a simulation detection port of an air conditioner controller, and the power switch control triggering method of the automobile air conditioner comprises the following steps: acquiring a detection value of an analog detection port once in every interval unit time; respectively comparing the detection values of the analog detection ports obtained by continuously preset times with detection threshold values preset by the analog detection ports; if the detection values of the analog detection ports obtained by the continuous preset times are smaller than the detection threshold value preset by the analog detection ports, judging that the power switch of the automobile air conditioner is triggered, and generating corresponding operation control signals; otherwise, judging that the power switch of the automobile air conditioner is not triggered. The invention also discloses a control controller and an automobile air conditioner control system. The power switch triggering control method of the automobile air conditioner can improve EMC anti-interference capability without increasing any cost.
Description
Technical Field
The invention relates to the technical field of automobile air conditioner control, in particular to a power switch triggering control method, a control controller and an automobile air conditioner control system of an automobile air conditioner.
Background
At present, along with the increasing degree of the automobile internet, the EMC standard is higher and higher, the disturbance rejection capability of automobile electronic products is stronger and stronger, and especially for products such as an air conditioner controller on an automobile, which need to control a plurality of external motors and valves, the disturbance rejection capability requirement is higher and higher, once the influence of electromagnetic wave disturbance is larger, the key and knob are triggered by mistake, the air door motor shakes, other external control modules work abnormally, and the driving environment of the whole automobile is greatly influenced.
At present, aiming at the general conditions of reasons that EMC anti-interference experiments cause false triggering of keys and knobs of an air conditioner controller, vibration of a throttle motor and abnormal operation of other external control modules: after the resistor, the current is smaller and the value fed back to the I/O port of the air conditioner controller is triggered to be fixed low level 0.3 x vcc and high level 0.7 x vcc, thus the air conditioner controller is easy to be interfered and the trigger value cannot be selected, so that the air conditioner controller is affected to detect that an error occurs, and finally, the external actual function module controlled is disordered, or the HMI interface is abnormally displayed, for example, the situation that: false triggers of keys, knobs, dysfunction, etc.
In view of the above, the conventional method in the prior art is to increase the number of PCB layers, so that the anti-interference capability can be improved, but a great cost is increased; in addition, the components are replaced on the PCB by repeated tests, so that a great deal of time and labor are consumed, and the cost is increased.
Therefore, how to improve EMC immunity without increasing costs is a problem to be solved by those skilled in the art.
Disclosure of Invention
The invention provides a power switch triggering control method, a control controller and an automobile air conditioner control system of an automobile air conditioner, which solve the problem that the EMC immunity is improved and the cost is increased in the related technology.
As a first aspect of the present invention, there is provided a power switch triggering control method of an automotive air conditioner, wherein the power switch of the automotive air conditioner is communicatively connected to an analog detection port of an air conditioner controller, the power switch control triggering method of the automotive air conditioner includes:
Obtaining a detection value of the analog detection port once every interval unit time;
Comparing the detection values of the analog detection ports obtained by continuously preset times with detection threshold values preset by the analog detection ports respectively;
if the detection values of the analog detection ports obtained by the continuous preset times are smaller than the detection threshold value preset by the analog detection ports, judging that the power switch of the automobile air conditioner is triggered, and generating corresponding operation control signals;
Otherwise, judging that the power switch of the automobile air conditioner is not triggered.
Further, the generating the corresponding operation control signal includes:
if the current power switch state of the automobile air conditioner is on, generating an operation control signal for closing;
and if the current power switch state of the automobile air conditioner is off, generating an on operation control signal.
Further, the detection value of the analog detection port comprises a detection voltage value, and the detection threshold preset by the analog detection port comprises a trigger voltage value.
Further, the unit time includes 1ms.
Further, the preset number of times includes 50 times.
As another aspect of the present invention, there is provided an air conditioner controller, which includes a processor and a memory, wherein the processor is communicatively connected with the memory, the memory is used for storing computer instructions, and the processor is used for loading and executing the computer instructions, so as to implement the power switch triggering control method of the automotive air conditioner.
As another aspect of the present invention, there is provided an air conditioner controller for implementing the aforementioned power switch triggering control method of an automotive air conditioner, wherein the power switch of the automotive air conditioner is communicatively connected to an analog detection port of the air conditioner controller, the air conditioner controller comprising:
the acquisition module is used for acquiring the detection value of the analog detection port once in every interval unit time;
the comparison module is used for comparing the detection values of the analog detection ports, which are obtained continuously and in preset times, with detection threshold values preset by the analog detection ports respectively;
The first judging module is used for judging that the power switch of the automobile air conditioner is triggered and generating a corresponding operation control signal if the detection values of the analog detection ports obtained by continuously preset times are smaller than the detection threshold value preset by the analog detection ports;
and the second judging module is used for judging that the power switch of the automobile air conditioner is not triggered if the second judging module is used for otherwise.
As another aspect of the present invention, there is provided an air conditioner control system for an automobile, comprising: the power switch of the automobile air conditioner and the air conditioner controller are characterized in that a simulation detection port of the air conditioner controller is in communication connection with the power switch of the automobile air conditioner, the simulation detection port of the air conditioner controller can acquire a detection value of the power switch of the automobile air conditioner, and whether the power switch of the automobile air conditioner is triggered or not is judged according to the detection value.
Preferably, the air conditioner controller comprises an MCU, and the analog detection port of the air conditioner controller comprises an AD port of the MCU.
Preferably, the power switch of the automobile air conditioner comprises a key and/or a knob.
According to the power switch triggering control method of the automobile air conditioner, the analog detection port of the air conditioner controller is connected with the power switch of the automobile air conditioner, the detection threshold value of the air conditioner controller is set, the detection value is obtained continuously for many times, each detection value is compared with the detection threshold value, and the power switch of the automobile air conditioner can be judged to be triggered under the condition that the detection values obtained many times are smaller than the detection threshold value. In addition, the mode for improving EMC anti-interference capability is realized by changing the connection interface of the air conditioner controller and the power switch of the automobile air conditioner, and compared with the mode in the prior art that the number of layers of the PCB is required to be increased, the mode can be realized without increasing any cost.
Drawings
The accompanying drawings are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate the invention and together with the description serve to explain, without limitation, the invention. In the drawings:
Fig. 1 is a block diagram of an automobile air conditioner control system provided by the invention.
Fig. 2 is a flowchart of a power switch triggering control method of an automotive air conditioner.
Detailed Description
It should be noted that, without conflict, the embodiments of the present invention and features of the embodiments may be combined with each other. The invention will be described in detail below with reference to the drawings in connection with embodiments.
In order that those skilled in the art will better understand the present invention, a technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in which it is apparent that the described embodiments are only some embodiments of the present invention, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the present invention without making any inventive effort, shall fall within the scope of the present invention.
It should be noted that the terms "first," "second," and the like in the description and the claims of the present invention and the above figures are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used may be interchanged where appropriate in order to describe the embodiments of the invention herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.
As shown in fig. 1, an embodiment of the present invention provides an automotive air conditioner control system, which includes a power switch 100 of an automotive air conditioner and an air conditioner controller 200, wherein an analog detection port of the air conditioner controller 200 is in communication connection with the power switch 100 of the automotive air conditioner, and the analog detection port of the air conditioner controller 200 can obtain a detection value of the power switch 100 of the automotive air conditioner, and determine whether the power switch 100 of the automotive air conditioner is triggered according to the detection value.
In the embodiment of the present invention, the air conditioner controller 200 may be specifically an MCU, and in this case, the analog detection port of the air conditioner controller 200 may be specifically an AD port of the MCU.
Preferably, the power switch 100 of the air conditioner of the automobile may specifically include a key and/or a knob.
Accordingly, the analog detection port of the air conditioner controller 200 may include key detection and knob detection.
It should be understood that since the analog detection port of the air conditioner controller 200 can realize high-precision detection, voltage detection of the power switch 100 of the vehicle air conditioner can be realized by utilizing this feature, and the trigger voltage value of the analog detection port can be set according to actual needs.
For example, the power switch of the automobile air conditioner is 5V in a non-triggering state, and is 0V in triggering, and the triggering voltage value of the analog detection port can be set through the characteristic, for example, the triggering voltage value can be set to be 3V, namely, the automobile air conditioner is considered to be triggered when the detection value is smaller than 3V, so that interference signals with interference voltage between 3V and 5V can be effectively filtered, and the EMC anti-interference capability of the air conditioner controller can be improved. Of course, the trigger voltage value can be set to be 2V or 1V or other voltage values according to the requirement, and the analog detection port of the air conditioner controller can detect the high-precision voltage value, so that the interference signals can be filtered in the mode, and the EMC interference immunity is improved.
As another embodiment of the present invention, there is provided an air conditioner controller including a processor and a memory, the processor being communicatively connected to the memory, the memory being configured to store computer instructions, the processor being configured to load and execute the computer instructions to implement a power switch triggering control method of an automotive air conditioner described below.
In this embodiment, a method for triggering and controlling a power switch of an automobile air conditioner is provided, and fig. 2 is a flowchart of the method for triggering and controlling a power switch of an automobile air conditioner according to an embodiment of the present invention, where the power switch of the automobile air conditioner is communicatively connected to an analog detection port of an air conditioner controller, as shown in fig. 2, and the method for triggering and controlling a power switch of an automobile air conditioner includes:
S110, acquiring a detection value of the analog detection port once in every interval unit time;
it should be understood that the detection value of the analog detection port may be acquired once per unit time.
The unit time may be 1ms in consideration of the normal operation response time of the user, but may be other time values, which is not limited herein.
It should be noted that, as described above, the air conditioner controller may be specifically an MCU, so the analog detection port herein may be specifically an AD port of the MCU, and the detection value is specifically a detection voltage value.
S120, respectively comparing the detection values of the simulation detection ports obtained by continuously preset times with detection threshold values preset by the simulation detection ports;
In order to be able to filter the interference signal more efficiently, the method can be realized by continuously acquiring the detection value of the analog detection port for a plurality of times, for example, the method can be realized by continuously acquiring the detection value for 50 times, the method can filter the interference signal more effectively again on the basis of filtering the interference signal by setting the detection threshold value, and the interference signal with larger fluctuation amplitude can be filtered by continuously acquiring the detection value for a plurality of times because the fluctuation amplitude of the interference signal is larger.
S130, if the detection values of the simulation detection ports obtained by continuous preset times are smaller than the detection threshold value preset by the simulation detection ports, judging that a power switch of the automobile air conditioner is triggered, and generating corresponding operation control signals;
In the embodiment of the present invention, the detection threshold may specifically be a trigger voltage value, as described above, where the trigger voltage value may be set to 3V, that is, the trigger voltage is considered to be triggered when the detection value is less than 3V, so that an interference signal with an interference voltage between 3V and 5V may be effectively filtered out, and the interference signal may be more effectively filtered out by such a determination manner that the interference voltage is continuously repeated, for example, continuously repeated 50 times.
It should be appreciated that the generating of the corresponding operation control signal includes:
if the current power switch state of the automobile air conditioner is on, generating an operation control signal for closing;
and if the current power switch state of the automobile air conditioner is off, generating an on operation control signal.
Specifically, since the power switch of the vehicle air conditioner is 5V in the non-triggering state, when the triggering of the knob and/or the button is received, the power switch of the vehicle air conditioner is changed to 0V, so that when the detection value is less than the triggering voltage value in multiple judgments, it can be judged that the power switch of the vehicle air conditioner is triggered, at this time, if the current power switch state of the vehicle air conditioner is in the on state, the power switch is triggered to generate the closed operation control signal, otherwise, if the current power switch state of the vehicle air conditioner is in the off state, the power switch is triggered to generate the open operation control signal.
And S140, otherwise, judging that the power switch of the automobile air conditioner is not triggered.
Specifically, if the detection values of the analog detection ports obtained by the continuous preset times are not all smaller than the detection threshold preset by the analog detection ports, it is determined that the power switch of the automobile air conditioner is not triggered, and the air conditioner controller may be disturbed, so that no operation is performed at this time.
It should be understood that the voltage value is 5V when the power switch state of the automobile air conditioner is not triggered no matter in the on state or the off state currently, and only becomes 0V when the power switch state is triggered.
In summary, according to the power switch triggering control method for the automobile air conditioner provided by the embodiment of the invention, the simulated detection port of the air conditioner controller is connected with the power switch of the automobile air conditioner, the detection threshold value of the air conditioner controller is set, the detection value of each time is compared with the detection threshold value by continuously acquiring the detection value for multiple times, and the power switch of the automobile air conditioner can be judged to be triggered under the condition that the detection value acquired for multiple times is smaller than the detection threshold value. In addition, the mode for improving EMC anti-interference capability is realized by changing the connection interface of the air conditioner controller and the power switch of the automobile air conditioner, and compared with the mode in the prior art that the number of layers of the PCB is required to be increased, the mode can be realized without increasing any cost.
Correspondingly, another embodiment of the present invention provides an air conditioner controller for implementing the method for triggering and controlling a power switch of an automotive air conditioner, where the power switch of the automotive air conditioner is communicatively connected to an analog detection port of the air conditioner controller, and the air conditioner controller includes:
the acquisition module is used for acquiring the detection value of the analog detection port once in every interval unit time;
the comparison module is used for comparing the detection values of the analog detection ports, which are obtained continuously and in preset times, with detection threshold values preset by the analog detection ports respectively;
The first judging module is used for judging that the power switch of the automobile air conditioner is triggered and generating a corresponding operation control signal if the detection values of the analog detection ports obtained by continuously preset times are smaller than the detection threshold value preset by the analog detection ports;
and the second judging module is used for judging that the power switch of the automobile air conditioner is not triggered if the second judging module is used for otherwise.
Regarding the air conditioner controller provided by the embodiment of the present invention, the specific working principle may refer to the foregoing description of the power switch triggering control method of the automobile air conditioner, and will not be repeated here.
It is to be understood that the above embodiments are merely illustrative of the application of the principles of the present invention, but not in limitation thereof. Various modifications and improvements may be made by those skilled in the art without departing from the spirit and substance of the invention, and are also considered to be within the scope of the invention.
Claims (8)
1. The power switch triggering control method of the automobile air conditioner is characterized in that the power switch of the automobile air conditioner is in communication connection with a simulation detection port of an air conditioner controller, and the power switch control triggering method of the automobile air conditioner comprises the following steps:
Obtaining a detection value of the analog detection port once every interval unit time;
Comparing the detection values of the analog detection ports obtained by continuously preset times with detection threshold values preset by the analog detection ports respectively;
if the detection values of the analog detection ports obtained by the continuous preset times are smaller than the detection threshold value preset by the analog detection ports, judging that the power switch of the automobile air conditioner is triggered, and generating corresponding operation control signals;
otherwise, judging that the power switch of the automobile air conditioner is not triggered;
the generating the corresponding operation control signal includes:
if the current power switch state of the automobile air conditioner is on, generating an operation control signal for closing;
If the current power switch state of the automobile air conditioner is closed, generating an opened operation control signal;
the detection value of the analog detection port comprises a detection voltage value, and the detection threshold preset by the analog detection port comprises a trigger voltage value.
2. The power switch triggering control method of an automotive air conditioner as recited in claim 1, characterized in that the unit time includes 1ms.
3. The power switch triggering control method of an automotive air conditioner as recited in claim 1, wherein the preset number of times includes 50 times.
4. An air conditioner controller, comprising a processor and a memory, wherein the processor is in communication connection with the memory, the memory is used for storing computer instructions, and the processor is used for loading and executing the computer instructions to realize the power switch triggering control method of the automobile air conditioner according to any one of claims 1 to 3.
5. An air conditioner controller for implementing the power switch triggering control method of an automotive air conditioner according to any one of claims 1 to 3, characterized in that the power switch of the automotive air conditioner is in communication connection with an analog detection port of the air conditioner controller, the air conditioner controller comprising:
the acquisition module is used for acquiring the detection value of the analog detection port once in every interval unit time;
the comparison module is used for comparing the detection values of the analog detection ports, which are obtained continuously and in preset times, with detection threshold values preset by the analog detection ports respectively;
The first judging module is used for judging that the power switch of the automobile air conditioner is triggered and generating a corresponding operation control signal if the detection values of the analog detection ports obtained by continuously preset times are smaller than the detection threshold value preset by the analog detection ports;
and the second judging module is used for judging that the power switch of the automobile air conditioner is not triggered if the second judging module is used for otherwise.
6. An automotive air conditioning control system, comprising: the power switch of the automobile air conditioner and the air conditioner controller of claim 4 or 5, wherein the simulation detection port of the air conditioner controller is in communication connection with the power switch of the automobile air conditioner, and the simulation detection port of the air conditioner controller can acquire the detection value of the power switch of the automobile air conditioner and judge whether the power switch of the automobile air conditioner is triggered according to the detection value.
7. The vehicle air conditioner control system of claim 6, wherein the air conditioner controller includes an MCU and the analog detection port of the air conditioner controller includes an AD port of the MCU.
8. The vehicle air conditioner control system of claim 6, wherein the power switch of the vehicle air conditioner comprises a key and/or a knob.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202111263301.XA CN113997750B (en) | 2021-10-28 | 2021-10-28 | Power switch trigger control method, controller and control system of automobile air conditioner |
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| CN202111263301.XA CN113997750B (en) | 2021-10-28 | 2021-10-28 | Power switch trigger control method, controller and control system of automobile air conditioner |
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| CN113997750A CN113997750A (en) | 2022-02-01 |
| CN113997750B true CN113997750B (en) | 2024-05-31 |
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| CN113997750A (en) | 2022-02-01 |
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