CN115127193A - Detection method and system for loose wiring of zero line and live line and air conditioner outdoor unit - Google Patents
Detection method and system for loose wiring of zero line and live line and air conditioner outdoor unit Download PDFInfo
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/30—Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring
- F24F11/32—Responding to malfunctions or emergencies
- F24F11/38—Failure diagnosis
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/30—Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring
- F24F11/32—Responding to malfunctions or emergencies
- F24F11/33—Responding to malfunctions or emergencies to fire, excessive heat or smoke
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/50—Control or safety arrangements characterised by user interfaces or communication
- F24F11/52—Indication arrangements, e.g. displays
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
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Abstract
Description
技术领域technical field
本发明涉及空调器故障检测技术领域，尤其涉及一种零火线接线松动的检测方法及系统、空调器室外机。The invention relates to the technical field of fault detection of air conditioners, in particular to a method and system for detecting loose wiring of a zero live wire, and an outdoor unit of an air conditioner.
背景技术Background technique
空调室外机所处工作环境较恶劣，安装环境差，机组在安装时或者长期工作情况下会可能会出现零火线接线松动，导致空调进线端接触不良，空调通电运行的时候产生高压大电流电弧，轻则导致控制器频繁过流保护影响用户使用，重则导致控制器烧毁，接线端子起火，造成用户财产损失。The working environment of the outdoor unit of the air conditioner is harsh and the installation environment is poor. The zero live wire connection may be loose during installation or under long-term working conditions, resulting in poor contact at the inlet end of the air conditioner. When the air conditioner is powered on and running, high voltage and high current arcs , it will cause frequent overcurrent protection of the controller to affect the user's use, and in severe cases, the controller will be burned, the wiring terminal will catch fire, and the user's property will be lost.
发明内容SUMMARY OF THE INVENTION
为解决室外机接线端子处零火线接线松动的问题，本发明提供一种零火线接线松动的检测方法，包括：空调器运行；获取零火线输入电流；在所述零火线输入电流的峰值满足第一预设条件的情况下，获取接线端子温度；根据接线端子温度判断是否出现零火线接线松动。In order to solve the problem of the looseness of the neutral and live wires at the terminals of the outdoor unit, the present invention provides a method for detecting the looseness of the neutral and live wires, including: running the air conditioner; obtaining the input current of the neutral and live wires; In the case of a preset condition, the temperature of the terminal is obtained; according to the temperature of the terminal, it is judged whether there is loose connection of the neutral wire.
采用该技术方案后所达到的技术效果：通过采集接线端子温度及零火线输入电流的运行状态，能够精准识别异常电流产生的原因，利于用户与售后排查问题原因，提高空调器的运行可靠性。具体的，根据零火线输入电流的峰值能够判断是否有异常电流产生，根据接线端子温度能够判断出零火线输入电流异常是否由接线端子处零火线接线松动导致。The technical effect achieved after adopting this technical solution: by collecting the temperature of the terminal and the running state of the input current of the zero live wire, the cause of the abnormal current can be accurately identified, which is helpful for users and after-sales to troubleshoot the cause of the problem, and improves the operation reliability of the air conditioner. Specifically, it can be determined whether there is abnormal current generation according to the peak value of the input current of the neutral and live wire, and whether the abnormality of the input current of the neutral and live wire is caused by the loose connection of the neutral and live wire at the terminal can be judged according to the temperature of the terminal.
在本实施例中，所述第一预设条件包括：所述零火线输入电流的峰值大于峰值阈值的频率大于频率阈值。In this embodiment, the first preset condition includes: the frequency at which the peak value of the neutral live wire input current is greater than the peak value threshold value is greater than the frequency threshold value.
采用该技术方案后所达到的技术效果：若零火线输入电流的峰值大于峰值阈值的频率大于频率阈值，则说明当前零火线输入电流出现异常波动。The technical effect achieved by adopting this technical solution: if the peak value of the zero live wire input current is greater than the peak value threshold and the frequency is greater than the frequency threshold, it means that the current zero live wire input current has abnormal fluctuations.
在本实施例中，所述峰值阈值包括第一频率阈值与第二频率阈值；所述第一预设条件包括：所述零火线输入电流的峰值大于峰值阈值的频率大于等于所述第一频率阈值且所述零火线输入电流的峰值大于峰值阈值的频率小于所述第二频率阈值；其中，所述第一频率阈值小于所述第二频率阈值。In this embodiment, the peak threshold value includes a first frequency threshold value and a second frequency threshold value; the first preset condition includes: the frequency at which the peak value of the neutral live wire input current is greater than the peak value threshold value is greater than or equal to the first frequency The threshold value and the frequency at which the peak value of the neutral live wire input current is greater than the peak value threshold value is less than the second frequency threshold value; wherein the first frequency threshold value is less than the second frequency threshold value.
采用该技术方案后所达到的技术效果：需要说明的是，当控制器内部出现短路时，零火线输入电流的峰值会在短时间内出现多次大于峰值阈值的频率的情况。若零火线输入电流的峰值大于峰值阈值的频率大于等于所述第一频率阈值，则说明当前零火线输入电流出现波动的频率已经超出了电网正常波动的频率，故判定当前零火线输入电流出现异常，因此需要进行故障排查，检测零火线输入电流的峰值大于峰值阈值的频率与第二频率阈值的大小关系。若零火线输入电流的峰值大于峰值阈值的频率小于所述第二频率阈值，这说明当前零火线输入电流出现异常波动不是由控制器内部短路引起的，故检测端子温度。The technical effect achieved by adopting this technical solution: It should be noted that when a short circuit occurs inside the controller, the peak value of the zero live wire input current will appear multiple times in a short period of time with a frequency greater than the peak value threshold. If the frequency at which the peak value of the input current of the neutral wire is greater than the peak value threshold is greater than or equal to the first frequency threshold, it means that the frequency of the current fluctuation of the input current of the neutral wire has exceeded the frequency of the normal fluctuation of the power grid, so it is determined that the current input current of the neutral wire is abnormal , so it is necessary to carry out troubleshooting to detect the relationship between the frequency at which the peak value of the zero live wire input current is greater than the peak value threshold and the second frequency threshold. If the frequency at which the peak value of the neutral wire input current is greater than the peak value threshold is less than the second frequency threshold, it means that the abnormal fluctuation of the current neutral wire input current is not caused by the internal short circuit of the controller, so the terminal temperature is detected.
在本实施例中，若所述零火线输入电流的峰值大于峰值阈值的频率小于第一频率阈值，则判定为电网波动。In this embodiment, if the frequency at which the peak value of the neutral live wire input current is greater than the peak value threshold value is less than the first frequency threshold value, it is determined that the grid fluctuates.
采用该技术方案后所达到的技术效果：需要说明的是，当电网出现波动时，也会出现零火线输入电流的峰值大于峰值阈值的情况，但出现的频率不会超出第一频率阈值。因此，若零火线输入电流的峰值大于峰值阈值的频率小于第一频率阈值，则说明当前零火线输入电流的峰值大于峰值阈值的情况为电网波动，无需动作。The technical effect achieved by adopting this technical solution: It should be noted that when the power grid fluctuates, the peak value of the zero live wire input current will also be larger than the peak value threshold, but the frequency of occurrence will not exceed the first frequency threshold value. Therefore, if the frequency at which the peak value of the neutral line input current is greater than the peak value threshold is smaller than the first frequency threshold, it means that the current peak value of the neutral line input current is greater than the peak value threshold, which is grid fluctuation and no action is required.
在本实施例中，若所述零火线输入电流的峰值大于峰值阈值的频率大于等于所述第一频率阈值，则判断所述零火线输入电流的峰值大于峰值阈值的频率是否大于等于所述第二频率阈值，若是，则判断控制器内部出现短路，并输出过流保护。In this embodiment, if the frequency at which the peak value of the neutral live wire input current is greater than the peak value threshold is greater than or equal to the first frequency threshold value, it is determined whether the frequency at which the peak value of the neutral live wire input current is greater than the peak value threshold value is greater than or equal to the first frequency threshold value. Second frequency threshold, if yes, then judge that there is a short circuit inside the controller, and output overcurrent protection.
采用该技术方案后所达到的技术效果：若零火线输入电流的峰值大于峰值阈值的频率大于等于第一频率阈值，则说明当前零火线输入电流出现波动的频率已经超出了电网正常波动的频率，故判定当前零火线输入电流出现异常，需要进行故障排查。根据零火线输入电流的峰值大于峰值阈值的频率与第二频率阈值的大小关系，能够判断出当前零火线输入电流出现异常波动是否由控制器内部短路引起。若零火线输入电流的峰值大于峰值阈值的频率大于等于第二频率阈值，则说明当前零火线输入电流出现大电流尖峰的频率很高，故判定当前零火线输入电流的异常波动的原因为控制器内部短路，故输出过流保护，提醒用户联系售后解决故障问题。The technical effect achieved after adopting this technical solution: if the frequency of the peak value of the input current of the zero live wire is greater than the peak value threshold value is greater than or equal to the first frequency threshold, it means that the frequency of the current fluctuation of the input current of the zero live wire has exceeded the frequency of the normal fluctuation of the power grid. Therefore, it is determined that the current input current of the zero live wire is abnormal, and troubleshooting is required. According to the relationship between the frequency at which the peak value of the neutral live wire input current is greater than the peak value threshold and the second frequency threshold value, it can be determined whether the abnormal fluctuation of the current neutral live wire input current is caused by the internal short circuit of the controller. If the frequency of the peak value of the input current of the neutral wire is greater than the peak value threshold and the frequency is greater than or equal to the second frequency threshold, it means that the frequency of large current spikes in the current input current of the neutral wire is very high, so it is determined that the abnormal fluctuation of the current input current of the neutral wire is caused by the controller. Internal short circuit, so output overcurrent protection, remind users to contact after-sales to solve the fault problem.
在本实施例中，根据所述接线端子温度与端子温度阈值的大小关系判断是否出现零火线接线松动；若所述接线端子温度大于等于端子温度阈值，则判定为接线松动，并控制空调器停机。In this embodiment, according to the relationship between the temperature of the terminal and the temperature threshold of the terminal, it is judged whether the zero live wire connection is loose; if the temperature of the terminal is greater than or equal to the terminal temperature threshold, it is determined that the connection is loose, and the air conditioner is controlled to stop .
采用该技术方案后所达到的技术效果：需要说明的是，当空调器室外机的接线端子处存在零火线接线松动时，会导致空调器接线端子处接触不良的问题，空调器通电运行时会产生高压大电流电弧，接线端子处的温度异常升高。若接线端子温度大于等于端子温度阈值，则说明接线端子处出现电弧，故判定接线松动，并控制空调器停机。The technical effect achieved after adopting this technical solution: It should be noted that when the connection terminal of the outdoor unit of the air conditioner has a loose neutral wire connection, it will lead to the problem of poor contact at the connection terminal of the air conditioner. A high-voltage and high-current arc is generated, and the temperature at the terminal is abnormally increased. If the terminal temperature is greater than or equal to the terminal temperature threshold, it means that an arc occurs at the terminal, so it is determined that the wiring is loose and the air conditioner is controlled to stop.
在本实施例中，若所述接线端子温度小于端子温度阈值，则判定为电网波动。In this embodiment, if the temperature of the connection terminal is less than the terminal temperature threshold, it is determined that the power grid fluctuates.
采用该技术方案后所达到的技术效果：若所述接线端子温度小于端子温度阈值，则说明接线端子处的温度正常，故判定为电网波动，可以继续运行。The technical effect achieved by adopting the technical solution: if the temperature of the terminal is less than the terminal temperature threshold, it means that the temperature at the terminal is normal, so it is determined that the power grid fluctuates and the operation can continue.
本发明实施例提供了一种零火线接线松动的检测系统，所述零火线接线松动的检测系统执行如前任意一实施例所述的零火线接线松动的检测方法。An embodiment of the present invention provides a system for detecting looseness of live wire connection, and the system for detecting looseness of live neutral wire connection executes the method for detecting looseness of live neutral wire connection described in any one of the preceding embodiments.
本发明实施例提供了一种空调器室外机，所述空调器室外机包括：控制模块，用于控制空调器运行；第一获取模块，用于获取零火线输入电流；第二获取模块，用于在所述零火线输入电流的峰值满足第一预设条件的情况下，获取接线端子温度；判断模块，用于根据所述接线端子温度判断是否出现零火线接线松动。An embodiment of the present invention provides an outdoor unit of an air conditioner. The outdoor unit of an air conditioner includes: a control module for controlling the operation of the air conditioner; a first acquisition module for When the peak value of the input current of the neutral wire meets the first preset condition, the temperature of the connection terminal is obtained; the judgment module is used for judging whether the connection of the neutral wire is loose according to the temperature of the connection terminal.
本发明实施例提供了一种空调器室外机，所述空调器室外机包括：存储有计算机程序的计算机可读存储介质和封装IC，所述计算机程序被所述封装IC读取并运行时，所述空调器室外机执行如前任意一项所述的零火线接线松动的检测方法。An embodiment of the present invention provides an outdoor unit of an air conditioner. The outdoor unit of an air conditioner includes: a computer-readable storage medium storing a computer program and a packaged IC. When the computer program is read and executed by the packaged IC, The outdoor unit of the air conditioner implements the method for detecting the looseness of the zero live wire connection as described in any one of the preceding items.
综上所述，本申请上述各个实施例可以具有如下一个或多个优点或有益效果：To sum up, the above-mentioned embodiments of the present application may have one or more of the following advantages or beneficial effects:
(1)通过采集接线端子温度及零火线输入电流的运行状态，能够精准识别异常电流产生的原因，利于用户与售后排查问题原因，提高空调器的运行可靠性。具体的，根据零火线输入电流的峰值能够判断是否有异常电流产生，根据接线端子温度能够判断出零火线输入电流异常是否由接线端子处零火线接线松动导致。(1) By collecting the temperature of the terminal and the running state of the input current of the zero live wire, the cause of the abnormal current can be accurately identified, which is helpful for users and after-sales to troubleshoot the cause of the problem and improve the operational reliability of the air conditioner. Specifically, it can be determined whether there is abnormal current generation according to the peak value of the input current of the neutral and live wire, and whether the abnormality of the input current of the neutral and live wire is caused by the loose connection of the neutral and live wire at the terminal can be judged according to the temperature of the terminal.
(2)当控制器内部出现短路时，零火线输入电流的峰值会在短时间内出现多次大于峰值阈值的频率的情况。若零火线输入电流的峰值大于峰值阈值的频率大于等于所述第一频率阈值，则说明当前零火线输入电流出现波动的频率已经超出了电网正常波动的频率，故判定当前零火线输入电流出现异常，因此需要进行故障排查，检测零火线输入电流的峰值大于峰值阈值的频率与第二频率阈值的大小关系。若零火线输入电流的峰值大于峰值阈值的频率小于所述第二频率阈值，这说明当前零火线输入电流出现异常波动不是由控制器内部短路引起的，故检测端子温度。(2) When a short circuit occurs inside the controller, the peak value of the zero live wire input current will appear multiple times in a short period of time with a frequency greater than the peak value threshold. If the frequency at which the peak value of the input current of the neutral wire is greater than the peak value threshold is greater than or equal to the first frequency threshold, it means that the frequency of the current fluctuation of the input current of the neutral wire has exceeded the frequency of the normal fluctuation of the power grid, so it is determined that the current input current of the neutral wire is abnormal , so it is necessary to carry out troubleshooting to detect the relationship between the frequency at which the peak value of the zero live wire input current is greater than the peak value threshold and the second frequency threshold. If the frequency at which the peak value of the neutral wire input current is greater than the peak value threshold is less than the second frequency threshold, it means that the abnormal fluctuation of the current neutral wire input current is not caused by the internal short circuit of the controller, so the terminal temperature is detected.
(3)需要说明的是，当空调器室外机的接线端子处存在零火线接线松动时，会导致空调器接线端子处接触不良的问题，空调器通电运行时会产生高压大电流电弧，接线端子处的温度异常升高。若接线端子温度大于等于端子温度阈值，则说明接线端子处出现电弧，故判定接线松动，并控制空调器停机。(3) It should be noted that when the wiring terminals of the outdoor unit of the air conditioner have a loose zero-fire wire connection, it will lead to the problem of poor contact at the terminals of the air conditioner. abnormally high temperature. If the terminal temperature is greater than or equal to the terminal temperature threshold, it means that an arc occurs at the terminal, so it is determined that the wiring is loose and the air conditioner is controlled to stop.
附图说明Description of drawings
为了更清楚地说明本发明实施例的技术方案，下面将对实施例描述中所需要使用的附图作简单地介绍，显而易见地，下面描述中的附图仅仅是本发明的一些实施例，对于本领域普通技术人员来讲，在不付出创造性劳动的前提下，还可以根据这些附图获得其他的附图。In order to illustrate the technical solutions of the embodiments of the present invention more clearly, the following briefly introduces the accompanying drawings used in the description of the embodiments. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, other drawings can also be obtained from these drawings without any creative effort.
图1为零火线接线松动的检测方法的流程示意图。FIG. 1 is a schematic flow chart of a method for detecting the looseness of the neutral wire connection.
图2为零火线接线松动的检测方法的具体流程示意图。FIG. 2 is a schematic flow chart of the specific flow of the detection method for the loose connection of the neutral wire.
图3为零火线接线松动的检测系统的模块示意图。FIG. 3 is a schematic diagram of a module of a detection system for loose wiring of neutral and live wires.
具体实施方式Detailed ways
下面将对本发明实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例仅仅是本发明一部分实施例，而不是全部的实施例。基于本发明中的实施例，本领域普通技术人员在没有作出创造性劳动前提下所获得的所有其他实施例，都属于本发明保护的范围。The technical solutions in the embodiments of the present invention will be described clearly and completely below. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.
【第一实施例】[First Embodiment]
参见图1，其为本发明第一实施例提供的一种零火线接线松动的检测方法的流程示意图。结合图1和图2，该零火线接线松动的检测方法例如包括以下步骤：空调器运行；获取零火线输入电流；在所述零火线输入电流的峰值满足第一预设条件的情况下，获取接线端子温度；根据接线端子温度判断是否出现零火线接线松动。Referring to FIG. 1 , it is a schematic flowchart of a method for detecting looseness of a live wire connection provided by the first embodiment of the present invention. 1 and FIG. 2 , the method for detecting the looseness of the neutral wire connection includes the following steps, for example: the air conditioner is running; the input current of the neutral wire is obtained; when the peak value of the input current of the neutral wire meets the first preset condition, obtaining Terminal temperature; according to the terminal temperature to judge whether there is loose connection of the neutral wire.
可以理解的是，通过采集接线端子温度及零火线输入电流的运行状态，能够精准识别异常电流产生的原因，利于用户与售后排查问题原因，提高空调器的运行可靠性。具体的，根据零火线输入电流的峰值能够判断是否有异常电流产生，根据接线端子温度能够判断出零火线输入电流异常是否由接线端子处零火线接线松动导致。It is understandable that by collecting the temperature of the terminal and the running state of the zero live wire input current, the cause of the abnormal current can be accurately identified, which is helpful for users and after-sales to troubleshoot the cause of the problem and improve the operational reliability of the air conditioner. Specifically, it can be determined whether there is abnormal current generation according to the peak value of the input current of the neutral and live wire, and whether the abnormality of the input current of the neutral and live wire is caused by the loose connection of the neutral and live wire at the terminal can be judged according to the temperature of the terminal.
进一步的，所述第一预设条件包括：所述零火线输入电流的峰值大于峰值阈值的频率大于频率阈值。Further, the first preset condition includes: the frequency at which the peak value of the neutral live wire input current is greater than the peak value threshold value is greater than the frequency threshold value.
可以理解的是，若零火线输入电流的峰值大于峰值阈值的频率大于频率阈值，则说明当前零火线输入电流出现异常波动。It can be understood that if the frequency of the peak value of the neutral live wire input current is greater than the peak value threshold and the frequency is greater than the frequency threshold value, it means that the current neutral live wire input current has abnormal fluctuations.
进一步的，所述峰值阈值包括第一频率阈值与第二频率阈值；所述第一预设条件包括：所述零火线输入电流的峰值大于峰值阈值的频率大于等于所述第一频率阈值且所述零火线输入电流的峰值大于峰值阈值的频率小于所述第二频率阈值；其中，所述第一频率阈值小于所述第二频率阈值。Further, the peak threshold value includes a first frequency threshold value and a second frequency threshold value; the first preset condition includes: the frequency at which the peak value of the neutral live wire input current is greater than the peak value threshold value is greater than or equal to the first frequency threshold value and all The frequency at which the peak value of the neutral live wire input current is greater than the peak value threshold is less than the second frequency threshold; wherein, the first frequency threshold is less than the second frequency threshold.
需要说明的是，当控制器内部出现短路时，零火线输入电流的峰值会在短时间内出现多次大于峰值阈值的频率的情况。It should be noted that when a short circuit occurs inside the controller, the peak value of the zero live wire input current will appear multiple times in a short period of time with a frequency greater than the peak value threshold.
在一个具体实施例中，若零火线输入电流的峰值大于峰值阈值的频率大于等于所述第一频率阈值，则说明当前零火线输入电流出现波动的频率已经超出了电网正常波动的频率，故判定当前零火线输入电流出现异常，因此需要进行故障排查，检测零火线输入电流的峰值大于峰值阈值的频率与第二频率阈值的大小关系。若零火线输入电流的峰值大于峰值阈值的频率小于所述第二频率阈值，这说明当前零火线输入电流出现异常波动不是由控制器内部短路引起的，故检测端子温度。In a specific embodiment, if the frequency at which the peak value of the neutral live wire input current is greater than the peak value threshold is greater than or equal to the first frequency threshold value, it means that the current frequency of fluctuations in the neutral live wire input current has exceeded the frequency of normal grid fluctuations, so it is determined that The current input current of the neutral wire is abnormal, so it is necessary to perform troubleshooting to detect the relationship between the frequency at which the peak value of the input current of the neutral wire is greater than the peak threshold and the second frequency threshold. If the frequency at which the peak value of the neutral wire input current is greater than the peak value threshold is less than the second frequency threshold, it means that the abnormal fluctuation of the current neutral wire input current is not caused by the internal short circuit of the controller, so the terminal temperature is detected.
举例来说，该第一频率阈值为一分钟内出现5次零火线输入电流的峰值大于峰值阈值的现象；该第二频率阈值为3ms内出现5次零火线输入电流的峰值大于峰值阈值的现象。For example, the first frequency threshold is the phenomenon that the peak value of the live wire input current is greater than the peak value threshold 5 times within one minute; the second frequency threshold is the phenomenon that the peak value of the live wire input current is greater than the peak value threshold 5 times within 3ms .
进一步的，若所述零火线输入电流的峰值大于峰值阈值的频率小于第一频率阈值，则判定为电网波动。Further, if the frequency at which the peak value of the neutral live wire input current is greater than the peak value threshold value is less than the first frequency threshold value, it is determined that the grid fluctuates.
需要说明的是，当电网出现波动时，也会出现零火线输入电流的峰值大于峰值阈值的情况，但出现的频率不会超出第一频率阈值。因此，若零火线输入电流的峰值大于峰值阈值的频率小于第一频率阈值，则说明当前零火线输入电流的峰值大于峰值阈值的情况为电网波动，无需动作。It should be noted that when the power grid fluctuates, the peak value of the input current of the neutral live wire may also be greater than the peak value threshold, but the frequency of occurrence will not exceed the first frequency threshold value. Therefore, if the frequency at which the peak value of the neutral line input current is greater than the peak value threshold is smaller than the first frequency threshold, it means that the current peak value of the neutral line input current is greater than the peak value threshold, which is grid fluctuation and no action is required.
进一步的，若所述零火线输入电流的峰值大于峰值阈值的频率大于等于所述第一频率阈值，则判断所述零火线输入电流的峰值大于峰值阈值的频率是否大于等于所述第二频率阈值，若是，则判断控制器内部出现短路，并输出过流保护。Further, if the frequency at which the peak value of the neutral live wire input current is greater than the peak value threshold is greater than or equal to the first frequency threshold value, then determine whether the frequency at which the peak value of the neutral live wire input current is greater than the peak value threshold value is greater than or equal to the second frequency threshold value. , if it is, judge that there is a short circuit inside the controller, and output overcurrent protection.
可以理解的是，若零火线输入电流的峰值大于峰值阈值的频率大于等于第一频率阈值，则说明当前零火线输入电流出现波动的频率已经超出了电网正常波动的频率，故判定当前零火线输入电流出现异常，需要进行故障排查。根据零火线输入电流的峰值大于峰值阈值的频率与第二频率阈值的大小关系，能够判断出当前零火线输入电流出现异常波动是否由控制器内部短路引起。若零火线输入电流的峰值大于峰值阈值的频率大于等于第二频率阈值，则说明当前零火线输入电流出现大电流尖峰的频率很高，故判定当前零火线输入电流的异常波动的原因为控制器内部短路，故输出过流保护，提醒用户联系售后解决故障问题。It can be understood that if the frequency of the peak value of the input current of the neutral line is greater than the peak value threshold and the frequency is greater than or equal to the first frequency threshold, it means that the frequency of the current fluctuation of the input current of the neutral line has exceeded the frequency of the normal fluctuation of the power grid, so it is determined that the current input of the neutral line The current is abnormal, and troubleshooting is required. According to the relationship between the frequency at which the peak value of the neutral live wire input current is greater than the peak value threshold and the second frequency threshold value, it can be determined whether the abnormal fluctuation of the current neutral live wire input current is caused by the internal short circuit of the controller. If the frequency of the peak value of the input current of the neutral wire is greater than the peak value threshold and the frequency is greater than or equal to the second frequency threshold, it means that the frequency of large current spikes in the current input current of the neutral wire is very high, so it is determined that the abnormal fluctuation of the current input current of the neutral wire is caused by the controller. Internal short circuit, so output overcurrent protection, remind users to contact after-sales to solve the problem.
进一步的，根据所述接线端子温度与端子温度阈值的大小关系判断是否出现零火线接线松动；若所述接线端子温度大于等于端子温度阈值，则判定为接线松动，并控制空调器停机。Further, according to the relationship between the terminal temperature and the terminal temperature threshold, it is judged whether the zero live wire connection is loose; if the terminal temperature is greater than or equal to the terminal temperature threshold, it is determined that the connection is loose, and the air conditioner is controlled to stop.
需要说明的是，当空调器室外机的接线端子处存在零火线接线松动时，会导致空调器接线端子处接触不良的问题，空调器通电运行时会产生高压大电流电弧，接线端子处的温度异常升高。若接线端子温度大于等于端子温度阈值，则说明接线端子处出现电弧，故判定接线松动，并控制空调器停机。It should be noted that when there is a loose neutral wire connection at the terminal of the outdoor unit of the air conditioner, it will lead to the problem of poor contact at the terminal of the air conditioner. abnormally elevated. If the terminal temperature is greater than or equal to the terminal temperature threshold, it means that an arc occurs at the terminal, so it is determined that the wiring is loose and the air conditioner is controlled to stop.
进一步的，若所述接线端子温度小于端子温度阈值，则判定为电网波动。Further, if the temperature of the connection terminal is less than the terminal temperature threshold, it is determined that the power grid fluctuates.
可以理解的是，若所述接线端子温度小于端子温度阈值，则说明接线端子处的温度正常，故判定为电网波动，可以继续运行。It can be understood that if the temperature of the terminal is less than the terminal temperature threshold, it means that the temperature at the terminal is normal, so it is determined that the power grid fluctuates and the operation can continue.
【第二实施例】[Second Embodiment]
本发明第二实施例提供了一种零火线接线松动的检测系统。其中，该零火线接线松动的检测系统在室外机接线端子处布置有用于检测接线端子温度的温度传感器。所述零火线接线松动的检测系统执行如第一实施例所述零火线接线松动的检测方法，且能达到同样的效果，为避免重复，此处不再赘述。The second embodiment of the present invention provides a detection system for looseness of the zero live wire connection. Wherein, in the detection system for the looseness of the zero live wire connection, a temperature sensor for detecting the temperature of the connection terminal is arranged at the connection terminal of the outdoor unit. The system for detecting the looseness of the neutral live wire connection executes the method for detecting the looseness of the neutral live wire connection as described in the first embodiment, and can achieve the same effect. To avoid repetition, details are not described here.
【第三实施例】[Third Embodiment]
本发明第三实施例提供了一种空调器室外机。参见图3，该空调器室外机200例如包括：控制模块210、第一获取模块220、第二获取模块230、以及判断模块240。其中，控制模块210用于控制空调器运行；第一获取模块220用于获取零火线输入电流；第二获取模块230用于在所述零火线输入电流的峰值满足第一预设条件的情况下，获取接线端子温度；判断模块240用于根据所述接线端子温度判断是否出现零火线接线松动。A third embodiment of the present invention provides an outdoor unit of an air conditioner. Referring to FIG. 3 , the outdoor unit 200 of the air conditioner includes, for example, a control module 210 , a
在一个具体实施例中，控制模块210、第一获取模块220、第二获取模块230、以及判断模块240相互配合以实现本发明第一实施例所述的零火线接线松动的检测方法，且能达到相同的技术效果，为避免重复，此处不再赘述。In a specific embodiment, the control module 210, the
【第四实施例】[Fourth Embodiment]
本发明第四实施例提供了一种空调器室外机，所述空调器室外机包括：存储有计算机程序的计算机可读存储介质和封装IC，所述计算机程序被所述封装IC读取并运行时，所述空调器室外机执行如前任意一项所述的零火线接线松动的检测方法，且能达到相同的技术效果，为避免重复，此处不再赘述。A fourth embodiment of the present invention provides an outdoor unit for an air conditioner, the outdoor unit for an air conditioner comprising: a computer-readable storage medium storing a computer program and a packaged IC, the computer program being read and executed by the packaged IC When the outdoor unit of the air conditioner executes the method for detecting the looseness of the zero live wire connection as described in any of the preceding items, and can achieve the same technical effect, in order to avoid repetition, it will not be repeated here.
最后应说明的是：以上实施例仅用以说明本发明的技术方案，而非对其限制；尽管参照前述实施例对本发明进行了详细的说明，本领域的普通技术人员应当理解：其依然可以对前述各实施例所记载的技术方案进行修改，或者对其中部分技术特征进行等同替换；而这些修改或者替换，并不使相应技术方案的本质脱离本发明各实施例技术方案的精神和范围。Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, but not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that it can still be The technical solutions described in the foregoing embodiments are modified, or some technical features thereof are equivalently replaced; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.
Claims (10)
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Address after: 315191 No. 1166 Mingguang North Road, Jiangshan Town, Ningbo, Zhejiang, Yinzhou District Patentee after: NINGBO AUX ELECTRIC Co.,Ltd. Country or region after: China Patentee after: AUX AIR CONDITIONING LIMITED BY SHARE Ltd. Address before: No. 1166 Mingguang North Road, Jiangshan Town, Ningbo, Zhejiang, Yinzhou District Patentee before: NINGBO AUX ELECTRIC Co.,Ltd. Country or region before: China Patentee before: AUX AIR CONDITIONING LIMITED BY SHARE Ltd. |