A controller for self-detecting contamination, a self-cleaning method and an electric appliance
By introducing a self-detecting contamination controller into the air conditioner controller, and using optocouplers to detect contamination on the mainboard and perform cleaning actions, the problem of the air conditioner controller's inability to self-detect contamination is solved, ensuring the safety and reliability of the air conditioner.
Patent Information
- Application Number
- CN202310415486.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- Filing Date
- 2023-04-18
- Publication Date
- 2025-11-07
- Estimated Expiration
- 2043-04-18
AI Technical Summary
Existing air conditioner controllers cannot detect pollution levels themselves, leading to severe motherboard contamination and making them prone to short circuits, arcing, and other malfunctions, threatening user safety.
Design a controller that can detect contamination. By cooperating with the main control module and the detection module, and using an optocoupler connected in series between the signal output interface and the signal detection interface, the controller can detect the contamination status of the motherboard and perform corresponding cleaning actions according to the type of contamination.
It enables self-detection and self-cleaning of motherboard contamination, ensuring the personal and property safety of users and preventing motherboard malfunctions caused by contamination.
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Figure CN116447702B_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The present application relates to the field of air conditioners, and particularly to a controller capable of self-detecting pollution, a self-cleaning method and an electrical appliance. BACKGROUND
[0002] Existing air conditioner controllers often use the measure of spraying three-proof glue to avoid oxidation or pollution of the mainboard components, but this measure cannot guarantee the cleanliness of the mainboard after several years of use, and in the case of serious pollution of the mainboard, short-circuiting and sparking faults may occur, which may threaten the use and personal safety of users.
[0003] Therefore, how to design a controller capable of self-detecting pollution, a self-cleaning method and an electrical appliance, which can detect the pollution condition and make self-cleaning actions in time, is a technical problem to be solved in the industry. SUMMARY
[0004] In view of the problem in the prior art that the traditional controller cannot self-detect pollution and is prone to serious pollution of the mainboard, thereby affecting user use, the present application provides a controller capable of self-detecting pollution, a self-cleaning method and an electrical appliance.
[0005] The technical scheme of the present application is to provide a controller capable of self-detecting pollution, which comprises a main control module and a plurality of detection modules arranged on a to-be-detected mainboard, the main control module comprises a plurality of pairs of matched signal output interfaces and signal detection interfaces, and the detection module is connected in series between each pair of signal output interfaces and signal detection interfaces, and the detection module changes the conduction state when there is pollution on the to-be-detected mainboard, so that the main control module can determine the pollution condition of the to-be-detected mainboard through the detection signal of the signal detection interface.
[0006] The light emitting device of the optocoupler is in a constant light state, and the light receiving device is connected in series between the signal output interface and the signal detection interface.
[0007] When there is pollution on the optocoupler on the to-be-detected mainboard, the light receiving device is in an off state, and the signal detection interface receives a low-level detection signal.
[0008] Further, the detection module comprises a first detection module arranged close to an intelligent power module on the to-be-detected mainboard, a second detection module arranged close to a power switch tube on the to-be-detected mainboard, and a third detection module arranged close to a weak current area on the to-be-detected mainboard.
[0009] The signal detection interface comprises a first signal detection interface connected with the first detection module, a second signal detection interface connected with the second detection module, and a third signal detection interface connected with the third detection module.
[0010] The main control module determines the pollution position of the to-be-tested mainboard according to the detection signals received by the first signal detection interface, the second signal detection interface and the third signal detection interface.
[0011] The application further provides a self-cleaning method using the controller for detecting pollution, which comprises the following steps of: setting a corresponding relationship between cleaning actions and pollution types in advance;
[0012] The signal detection interface is provided with an initial signal through the signal output interface, and the detection signals received by the signal detection interface are detected;
[0013] The pollution type of the to-be-tested mainboard is determined according to the detection signals, and the cleaning action is determined according to the corresponding relationship;
[0014] The cleaning action is executed by the main control module.
[0015] Further, the to-be-tested mainboard comprises three pollution types, which are:
[0016] The first pollution type is that the pollution rate of the intelligent power module on the to-be-tested mainboard is higher than 60%, or the pollution rate of the power switch tube on the to-be-tested mainboard is higher than 80%;
[0017] The second pollution type is that the pollution rate of the intelligent power module on the to-be-tested mainboard is between 30% and 60%, or the pollution rate of the power switch tube on the to-be-tested mainboard is between 60% and 80%, or the pollution rate of the weak current area on the to-be-tested mainboard is higher than 80%;
[0018] The third pollution type is that the pollution rate of the power switch tube on the to-be-tested mainboard is between 50% and 60%, or the pollution rate of the weak current area on the to-be-tested mainboard is between 60% and 80%.
[0019] Further, the self-cleaning method comprises a first cleaning action corresponding to the first pollution type, a second cleaning action corresponding to the second pollution type and a third cleaning action corresponding to the third pollution type;
[0020] The first cleaning action comprises: stopping the unit where the to-be-tested mainboard is located, and feeding back to the user that the mainboard needs to be cleaned.
[0021] The second cleaning action comprises: starting the fan in the unit where the to-be-tested mainboard is located, and increasing the rotating speed of the fan to the highest rotating speed.
[0022] The third cleaning action comprises: reminding the user that the to-be-tested mainboard is polluted.
[0023] Further, the pollution type of the mainboard to be detected is determined according to the detection signal, and the pollution type comprises:
[0024] The number of low-level detection signals received by the first signal detection interface, the second signal detection interface and the third signal detection interface is calculated respectively;
[0025] The number of the first detection module, the second detection module and the third detection module is obtained;
[0026] The pollution rate at the intelligent power module on the mainboard to be detected is determined according to the number of the first detection module and the number of low-level detection signals received by the first signal detection interface;
[0027] The pollution rate at the power switch tube on the mainboard to be detected is determined according to the number of the second detection module and the number of low-level detection signals received by the second signal detection interface;
[0028] The pollution rate at the weak electric area on the mainboard to be detected is determined according to the number of the third detection module and the number of low-level detection signals received by the third signal detection interface;
[0029] The pollution type is determined according to the pollution rate at the intelligent power module, the pollution rate at the power switch tube and the pollution rate at the weak electric area.
[0030] Further, after the cleaning action is performed, the self-cleaning method further comprises uploading the pollution type to a network end by the master control module, so as to be inquired by a user and an after-sales platform.
[0031] The application further provides an electric appliance having the above-mentioned controller for detecting pollution.
[0032] Further, the electric appliance is an air conditioner.
[0033] Compared with the prior art, the application has at least the following beneficial effects:
[0034] The application can determine the pollution type of the mainboard to be detected from the signal detection interface through the cooperation of the detection module and the master control module, and perform corresponding cleaning action according to the pre-set corresponding relationship, so that the mainboard is shut down when the pollution is serious, and the personal and property safety of the user is ensured. BRIEF DESCRIPTION OF DRAWINGS
[0035] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the embodiments or prior art description will be briefly introduced as follows. Obviously, the drawings in the following description only represent some embodiments of the present application, and for those skilled in the art, other drawings can also be obtained without creative labor.
[0036] Figure 1 Structure diagram of the controller for self-detecting pollution according to the present application;
[0037] Figure 2 Flow chart of the self-cleaning method according to the present application. DETAILED DESCRIPTION
[0038] In order to make the technical problems to be solved by the present application, technical solutions and beneficial effects more clearly, the present application will be further described in detail below in combination with the drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application, and are not used to limit the present application.
[0039] Therefore, one feature indicated in the specification will be used to explain one feature of one embodiment of the present application, and it is not implied that each embodiment of the present application must have the explained feature. In addition, it should be noted that the specification describes many features. Although certain features can be combined together to show possible system designs, these features can also be used in other combinations which are not explicitly described. Therefore, unless otherwise stated, the explained combinations are not intended to be limiting.
[0040] The principles and structures of the present application will be described in detail below in combination with the drawings and embodiments.
[0041] The existing air conditioner controller often uses the three-proofing glue to avoid the oxidation or pollution of the mainboard. However, this measure is difficult to ensure the cleanliness of the mainboard after several years of use. When the mainboard is seriously polluted, short circuit and fire faults are prone to occur. The idea of the present application is to propose a controller for self-detecting pollution, a self-cleaning method and an electrical appliance. Through the setting of the detection module and the cooperation with the main control module, the type of pollution on the to-be-tested mainboard can be determined, and according to the pre-set corresponding relationship, the corresponding cleaning action is taken, so as to avoid a series of problems caused by serious pollution of the to-be-tested mainboard.
[0042] Specifically, the controller for self-detecting pollution according to the present application comprises a main control module and a detection module. The specific setting is that the main control module comprises a plurality of pairs of matched signal output interfaces and signal detection interfaces, and the detection module is connected in series between each pair of signal output interfaces and signal detection interfaces, and the detection module is arranged on the to-be-tested mainboard.
[0043] The on state of the detection module changes when there is contamination on the mainboard to be detected, and since the detection module is connected in series between the signal output interface and the signal detection interface, the signal output interface provides an initial signal to the signal detection interface, and when the on state of the detection module changes due to contamination on the mainboard to be detected, the detection signal received by the signal detection interface also changes accordingly, so the design scheme in the application can be used to determine whether there is contamination on the mainboard to be detected.
[0044] Further, the detection module in the application uses an optical coupler, and the light emitter of the optical coupler is in a constant light state, and the light receiver is connected in series between the signal output interface and the signal detection interface.
[0045] When there is contamination on the mainboard to be detected, the light emitted by the light emitter of the optical coupler cannot be normally transmitted to the light receiver, and the light receiver cannot be turned on and is in a cut-off state, and since the light receiver is connected in series between the signal output interface and the signal detection interface, it will cause the signal detection interface to receive a low-level signal, and the low-level signal is used as a detection signal to identify whether there is contamination on the mainboard to be detected.
[0046] Please refer to Figure 1 , U1, U2, U3…UN are respectively a plurality of detection modules provided in the application, that is, optical couplers, IC is a master control module, the interface at TXD on the master control module is a signal output interface, the interface at RXD is a signal detection interface, and a Signal port is further provided on the master control module, which is connected to the light emitter of the optical coupler U1, the optical coupler U2, the optical coupler U3… the optical coupler UN, and provides a continuous high-level signal to make the light emitter of the optical coupler U1, the optical coupler U2, the optical coupler U3… the optical coupler UN open and be in a constant light state. When the optical coupler on the mainboard to be detected is not covered by contaminants, the light receiver can normally receive the light signal emitted by the light emitter and be turned on synchronously, and at this time the signal detection interface can normally receive the signal emitted by the signal output interface. In the application, the light emitter of the optical coupler uses a light-emitting diode, and the light receiver uses a photosensitive switch tube, which can be turned on when receiving the light signal emitted by the light-emitting diode. The distance between the light emitter and the light receiver in the optical coupler U1, the optical coupler U2, the optical coupler U3… the optical coupler UN needs to be kept within 3mm to avoid affecting the normal transmission of the light signal, and each optical coupler is provided as a transparent shell.
[0047] If a certain optical coupler is covered by contaminants, the light signal emitted by the light emitter cannot be received by the light receiver, at this time the light receiver is in a cut-off state, and the initial signal emitted by the signal output interface cannot be normally transmitted to the signal detection interface, at this time the signal received by the signal detection interface is a low level, and the low-level signal can be used as a detection signal to determine whether there is contamination on the mainboard to be detected.
[0048] As can be seen from the above working principle, when the contaminants exist at the detection module, the conduction state thereof is affected, and therefore, multiple detection modules can be arranged in the application, and are arranged on the mainboard to be detected respectively, and the specific position of the contaminants can be determined according to the conduction state of the detection module.
[0049] To this end, the design in the application is that the detection module is arranged in three types, including the first detection module arranged close to the intelligent power module on the mainboard to be detected, the second detection module arranged close to the power switch tube on the mainboard to be detected, and the third detection module arranged close to the weak current area on the mainboard to be detected.
[0050] Correspondingly, the signal detection interface includes the first signal detection interface connected with the first detection module, the second signal detection interface connected with the second detection module, and the third signal detection interface connected with the third detection module.
[0051] To this end, the application can determine the pollution position of the mainboard to be detected according to the detection signals received by the first signal detection interface, the second signal detection interface, and the third signal detection interface.
[0052] Specifically, when the contaminants exist at the intelligent power module on the mainboard to be detected, the first detection module is in the off state, and at this time, the first signal detection interface corresponding thereto receives the detection signal, and the pollution position is determined to be near the intelligent power module on the mainboard to be detected.
[0053] In the application, the first detection module, the second detection module, and the third detection module are all arranged in multiple numbers, and the application can determine the contamination rate of the intelligent power module on the mainboard to be detected according to the number of the first detection modules in the off state and the total number of the first detection modules. For example, the first detection module is arranged in 10 numbers, and the corresponding first signal detection interface is also arranged in 10 numbers. When the contamination is detected, 4 first detection modules are in the off state, that is, 4 first signal detection interfaces receive the detection signal. At this time, the number of the first detection modules in the off state is 4, and the total number of the first detection modules is 10, and therefore, the contamination rate of the intelligent power module on the mainboard to be detected can be calculated as 40%.
[0054] Through the above scheme, the application can determine the pollution position on the mainboard to be detected and the contamination rate at each pollution position respectively. According to different pollution conditions, the application determines three pollution types, and correspondingly provides cleaning actions to avoid damage to the mainboard to be detected.
[0055] Specifically, based on the above controller for self-detecting the contamination condition, the application proposes a self-cleaning method, which includes: pre-setting the corresponding relationship between the cleaning action and the pollution type;
[0056] An initial signal is provided for the signal detection interface through the signal output interface, and a detection signal received at the signal detection interface is detected;
[0057] The pollution type of the to-be-tested mainboard is determined according to the detection signal, and a cleaning action is determined according to the corresponding relationship;
[0058] The cleaning action is executed by the main control module.
[0059] The pollution types include three types, which are:
[0060] The first pollution type is that the pollution rate of the intelligent power module on the to-be-tested mainboard is higher than 60%, or the pollution rate of the power switch tube on the to-be-tested mainboard is higher than 80%;
[0061] The second pollution type is that the pollution rate of the intelligent power module on the to-be-tested mainboard is between 30% and 60%, or the pollution rate of the power switch tube on the to-be-tested mainboard is between 60% and 80%, or the pollution rate of the weak current area on the to-be-tested mainboard is higher than 80%;
[0062] The third pollution type is that the pollution rate of the power switch tube on the to-be-tested mainboard is between 50% and 60%, or the pollution rate of the weak current area on the to-be-tested mainboard is between 60% and 80%.
[0063] Correspondingly, the cleaning actions also include three types, which are a first cleaning action corresponding to the first pollution type, a second cleaning action corresponding to the second pollution type, and a third cleaning action corresponding to the third pollution type, wherein the first cleaning action includes: controlling the unit in which the to-be-tested mainboard is located to stop, and feeding back to the user that the mainboard needs to be cleaned;
[0064] The second cleaning action includes: controlling the fan in the unit in which the to-be-tested mainboard is located to start, and improving the rotating speed of the fan to the highest rotating speed;
[0065] The third cleaning action includes: reminding the user that the to-be-tested mainboard is polluted.
[0066] The corresponding relationship between the pre-set cleaning action and the pollution type, that is, the first pollution type corresponds to the first cleaning action, the second pollution type corresponds to the second cleaning action, and the third pollution type corresponds to the third cleaning action, so that the cleaning action to be used can be determined according to the corresponding relationship when the pollution type of the to-be-tested mainboard is determined.
[0067] It should be noted that the above three pollution types are only provided in the preferred embodiment of the present application, and in other embodiments of the present application, a plurality of pollution types can be provided, and corresponding cleaning actions can be provided according to different pollution types. Similarly, the pollution rate in each pollution type can be adjusted according to actual conditions, and is not limited to the above embodiments.
[0068] The pollution type of the to-be-tested mainboard is determined according to the detection signal, and the pollution type comprises the following steps:
[0069] The number of low-level detection signals received by the first signal detection interface, the second signal detection interface and the third signal detection interface is calculated respectively;
[0070] The number of the first detection module, the second detection module and the third detection module is obtained;
[0071] The pollution rate at the intelligent power module on the to-be-tested mainboard is determined according to the number of the first detection module and the number of low-level detection signals received by the first signal detection interface;
[0072] The pollution rate at the power switch tube on the to-be-tested mainboard is determined according to the number of the second detection module and the number of low-level detection signals received by the second signal detection interface;
[0073] The pollution rate at the weak electric area on the to-be-tested mainboard is determined according to the number of the third detection module and the number of low-level detection signals received by the third signal detection interface;
[0074] The pollution type is determined according to the pollution rate at the intelligent power module, the pollution rate at the power switch tube and the pollution rate at the weak electric area.
[0075] The first detection module, the second detection module and the third detection module are all provided with a plurality of detection modules, so that the percentage of the number of the first detection module in the total number of the first detection module can reflect the pollution rate at the intelligent power module on the to-be-tested mainboard to a certain extent;
[0076] The percentage of the number of the second detection module in the total number of the second detection module can reflect the pollution rate at the power switch tube on the to-be-tested mainboard to a certain extent;
[0077] The percentage of the number of the third detection module in the total number of the third detection module can reflect the pollution rate at the weak electric area on the to-be-tested mainboard to a certain extent.
[0078] The number of the first detection modules in the off state is consistent with the number of the detection signals of low level received by the first signal detection interface, so that the pollution rate at the intelligent power module can be calculated according to the number of the first detection modules and the number of the detection signals of low level received by the first signal detection interface, and correspondingly, the pollution rate at the power switch tube can be calculated according to the number of the second detection modules and the number of the detection signals of low level received by the second signal detection interface, and the pollution rate at the power switch tube can be calculated according to the number of the third detection modules and the number of the detection signals of low level received by the third signal detection interface. After the pollution rate at the intelligent power module, the pollution rate at the power switch tube and the pollution rate at the weak current area are calculated respectively, the specific pollution type of the to-be-tested mainboard can be determined according to the division of the first pollution type, the second pollution type and the third pollution type.
[0079] Please refer to Figure 2 The overall work flow chart of the present application is as follows: when the user starts the machine, the TXD port (i.e. the signal output interface) of the detection chip IC (i.e. the master control module in the present application) sends an initial signal, at the same time, the Signal port outputs a high-level signal to make the light emitting device of each optocoupler (i.e. the detection module) conductive, then the detection chip IC starts to collect the RXD (signal detection interface) and determines the specific pollution type of the to-be-tested mainboard according to the received detection signal. After determining the pollution type, the corresponding cleaning action is determined according to the corresponding relationship, and after completing the cleaning action, the above pollution type is fed back to the user and the after-sales platform for subsequent maintenance. If the pollution condition of the to-be-tested mainboard does not belong to any of the three pollution types, it means that there is no or low pollution on the to-be-tested mainboard, at this time, the master control module directly feeds back the pollution condition to the user, indicating that the pollution condition is low and cleaning is not needed.
[0080] Further, the self-cleaning method of the present application further comprises: uploading the pollution type to the network end by the master control module for user and after-sales platform query after performing the cleaning action.
[0081] The present application also proposes an electric appliance with the above-mentioned controller for detecting the pollution condition.
[0082] Further, the above-mentioned electric appliance is an air conditioner.
[0083] Compared with the prior art, the present application can determine the pollution type of the to-be-tested mainboard from the signal detection interface through the cooperation of the detection module and the master control module, and perform the corresponding cleaning action according to the pre-set corresponding relationship, and shut down when the mainboard is seriously polluted, to ensure the safety of the user's person and property during use.
[0084] The above merely describes preferred embodiments of the present application, and is not used to limit the present application, any modification, equivalent replacement and improvement made within the spirit and principle of the present application should be included in the protection scope of the present application.
Claims
1. A controller for detecting pollution, comprising a master control module and a plurality of detection modules arranged on a mainboard to be detected, characterized in that, The master control module comprises a plurality of pairs of matched signal output interfaces and signal detection interfaces, and a detection module is connected in series between each pair of signal output interface and signal detection interface, the detection module changes the conduction state when there is pollution on the to-be-tested mainboard, and the master control module can determine the pollution condition of the to-be-tested mainboard through the detection signal of the signal detection interface; The detection module adopts an optical coupler; The light emitter of the optical coupler is in a constant light state, and the light receiver is connected in series between the signal output interface and the signal detection interface; When there is pollution on the optical coupler of the to-be-tested mainboard, the light receiver is in an off state, and the signal detection interface receives a low-level detection signal.
2. The controller of claim 1, wherein, The detection module comprises a first detection module arranged close to the intelligent power module on the to-be-tested mainboard, a second detection module arranged close to the power switch tube on the to-be-tested mainboard, and a third detection module arranged close to the weak current area on the to-be-tested mainboard; The signal detection interface comprises a first signal detection interface connected with the first detection module, a second signal detection interface connected with the second detection module, and a third signal detection interface connected with the third detection module; The master control module determines the pollution position of the to-be-tested mainboard through the detection signals received by the first signal detection interface, the second signal detection interface, and the third signal detection interface.
3. A self-cleaning method employing the controller according to any one of claims 1 to 2, characterized by, Comprise: Pre-set the corresponding relationship between cleaning action and pollution type; The signal detection interface is provided with an initial signal through the signal output interface, and the detection signal received at the signal detection interface is detected; According to the detection signal, the pollution type of the to-be-tested mainboard is determined, and the cleaning action is determined according to the corresponding relationship; The cleaning action is executed through the master control module.
4. The self-cleaning method according to claim 3, characterized in that, The to-be-tested mainboard comprises three types of pollution, which are: The first pollution type, the pollution rate of the intelligent power module on the to-be-tested mainboard is higher than 60%, or the pollution rate of the power switch tube on the to-be-tested mainboard is higher than 80%; The second pollution type, the pollution rate of the intelligent power module on the to-be-tested mainboard is between 30% and 60%, or the pollution rate of the power switch tube on the to-be-tested mainboard is between 60% and 80%, or the pollution rate of the weak current area on the to-be-tested mainboard is higher than 80%; The third pollution type, the pollution rate of the power switch tube on the to-be-tested mainboard is between 50% and 60%, or the pollution rate of the weak current area on the to-be-tested mainboard is between 60% and 80%.
5. The self-cleaning method according to claim 4, characterized in that, The self-cleaning method comprises a first cleaning action corresponding to the first pollution type, a second cleaning action corresponding to the second pollution type, and a third cleaning action corresponding to the third pollution type; The first cleaning action comprises: controlling the unit where the to-be-tested mainboard is located to stop running, and feeding back to the user that the mainboard needs to be cleaned; The second cleaning action comprises: controlling the fan in the unit where the to-be-tested mainboard is located to start running, and increasing the rotating speed of the fan to the highest speed; The third cleaning action comprises: reminding the user that there is pollution on the to-be-tested mainboard.
6. The self-cleaning method according to claim 3, wherein, According to the detection signal, the pollution type of the mainboard to be detected is determined, and the method comprises the following steps: The number of low-level detection signals received by the first signal detection interface, the second signal detection interface and the third signal detection interface is calculated respectively; The number of the first detection module, the second detection module and the third detection module is obtained; According to the number of the first detection module and the number of low-level detection signals received by the first signal detection interface, the pollution rate at the intelligent power module on the mainboard to be detected is determined; According to the number of the second detection module and the number of low-level detection signals received by the second signal detection interface, the pollution rate at the power switch tube on the mainboard to be detected is determined; According to the number of the third detection module and the number of low-level detection signals received by the third signal detection interface, the pollution rate at the weak electric area on the mainboard to be detected is determined; According to the pollution rate at the intelligent power module, the pollution rate at the power switch tube and the pollution rate at the weak electric area, the pollution type is determined.
7. The self-cleaning method of claim 3, wherein, After the cleaning action is performed, the self-cleaning method further comprises the following step: uploading the pollution type to a network end by the main control module, so as to be inquired by a user and an after-sales platform.
8. An electric appliance characterized by The electric appliance has the controller according to any one of claims 1 to 2.
9. The appliance of claim 8, wherein, The electric appliance is an air conditioner.
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