CN107166662A - A method for prompting the filtration efficiency state of a filter screen and an air purifier - Google Patents
A method for prompting the filtration efficiency state of a filter screen and an air purifier Download PDFInfo
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- 238000001914 filtration Methods 0.000 title claims abstract description 88
- 238000000034 method Methods 0.000 title claims abstract description 26
- 239000003344 environmental pollutant Substances 0.000 claims abstract description 168
- 231100000719 pollutant Toxicity 0.000 claims abstract description 168
- 238000001514 detection method Methods 0.000 claims description 46
- 238000000746 purification Methods 0.000 description 15
- 238000004140 cleaning Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- WSFSSNUMVMOOMR-UHFFFAOYSA-N Formaldehyde Chemical compound O=C WSFSSNUMVMOOMR-UHFFFAOYSA-N 0.000 description 3
- 239000012855 volatile organic compound Substances 0.000 description 3
- 238000004887 air purification Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 230000001186 cumulative effect Effects 0.000 description 1
- 239000010419 fine particle Substances 0.000 description 1
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Abstract
Description
技术领域technical field
本发明涉及空气净化技术，尤其涉及一种滤网过滤效率状态提示方法及空气净化器。The invention relates to air purification technology, in particular to a method for prompting the filtration efficiency state of a filter screen and an air purifier.
背景技术Background technique
空气净化器是一种过滤空气的装置，过滤掉的污染物会附着在空气净化器的滤网上，随着空气净化器使用时间的增长，空气净化器的过滤效率便会降低，所以，空气净化器的滤网需要定期的清洗或更换。An air purifier is a device for filtering air. The filtered pollutants will adhere to the filter screen of the air purifier. As the air purifier is used longer, the filtration efficiency of the air purifier will decrease. Therefore, air purifier The filter screen of the filter needs to be cleaned or replaced regularly.
现有技术中，滤网的清洗或更换提醒一般都是采用累计使用时间的方式进行提醒，当累计使用时间达到设定值时提醒用户清洗或更换滤网，但是，使用累计使用时间的方式提醒清洗或更换滤网的方式不能真实的反映滤网是否需要清洗或更换，例如：一台空气净化器的使用环境相对较好，污染物也相对较低，在这种情况下，空气净化器使用时间达到预设的时间后便会发出清晰或更换的提示信息，而实际上滤网所附着的污染物很少，滤网的净化效率还没有真正下降到需要清洗或更换的程度；如果空气净化器使用的环境恨恶劣，滤网在已经附着大量污染物。并且使用时间没有达到预设值，在这种情况下继续使用空气净化器不仅没有净化空气的效果，反而会造成空气的二次污染。In the prior art, the cleaning or replacement reminder of the filter screen is generally reminded by the accumulated use time. When the accumulated use time reaches the set value, the user is reminded to clean or replace the filter screen. However, the accumulated use time is used to remind The method of cleaning or replacing the filter screen cannot truly reflect whether the filter screen needs to be cleaned or replaced. For example, an air purifier has a relatively good environment and relatively low pollutants. After the time reaches the preset time, a clear or replacement prompt message will be sent out. In fact, there are very few pollutants attached to the filter screen, and the purification efficiency of the filter screen has not really dropped to the extent that it needs to be cleaned or replaced; if the air purification The environment in which the filter is used is harsh, and a large amount of pollutants have been attached to the filter. And the use time has not reached the preset value. In this case, continuing to use the air purifier will not only have no effect on purifying the air, but will cause secondary pollution of the air.
发明内容Contents of the invention
有鉴于此，本发明实施例期望提供一种滤网过滤效率状态提示方法及空气净化器，能够实时的检测空气净化器的滤网的净化量，当空气净化器的滤网净化量到达预设值后，自动向用户发出提示清洗或更换滤网的提示信息。In view of this, the embodiment of the present invention expects to provide a filter filter efficiency state prompt method and an air purifier, which can detect the purification capacity of the filter net of the air purifier in real time, and when the purification capacity of the filter net of the air purifier reaches the preset After the value is set, a prompt message to the user to clean or replace the filter screen will be automatically sent out.
为达到上述目的，本发明实施例提供了一种滤网过滤效率状态提示方法，所述方法包括：In order to achieve the above purpose, an embodiment of the present invention provides a method for prompting the filtration efficiency status of a filter, the method comprising:
检测空气净化器工作时间段滤网进风端污染物浓度和出风端污染物浓度；Detect the concentration of pollutants at the air inlet end and the air outlet end of the filter during the working hours of the air purifier;
获得空气净化器工作时间段的风量；Obtain the air volume of the air purifier during the working hours;
根据所述进风端污染物浓度、所述出风端污染物浓度和所述风量，计算出所述滤网在工作时间段内的污染物过滤量；Calculate the pollutant filtering capacity of the filter screen during the working time period according to the pollutant concentration at the air inlet end, the pollutant concentration at the air outlet end, and the air volume;
将所述污染物过滤量与预设阈值进行比较，确定比较结果；Comparing the pollutant filtering amount with a preset threshold value to determine the comparison result;
根据所述比较结果，输出滤网效率状态提示信息。According to the comparison result, output filter screen efficiency status prompt information.
上述方法中，所述根据所述进风端污染物浓度、所述出风端污染物浓度和所述风量，计算出所述滤网在工作时间段内的污染物过滤量，包括：In the above method, the calculation of the pollutant filtering capacity of the filter screen during the working time period according to the pollutant concentration at the air inlet end, the pollutant concentration at the air outlet end, and the air volume includes:
所述滤网工作时间段至少包括一个检测周期，在所述检测周期检测空气净化器滤网进风端污染物浓度和出风端污染物浓度，获得所述检测周期滤网进风端污染物浓度和出风端污染物浓度；The working time period of the filter screen includes at least one detection period, during which the concentration of pollutants at the air inlet end of the filter screen of the air purifier and the concentration of pollutants at the air outlet end are detected, and the pollutant concentration at the air inlet end of the filter screen of the detection period is obtained. Concentration and concentration of pollutants at the air outlet;
对所述检测周期滤网进风端污染物浓度和出风端污染物浓度作差，获得污染物浓度差值；Making a difference between the pollutant concentration at the air inlet end of the filter screen and the pollutant concentration at the air outlet end of the detection cycle to obtain a difference in pollutant concentration;
将获得的各个检测周期污染物浓度差值进行累加，获得污染物浓度差值累加值；Accumulate the pollutant concentration difference obtained in each detection cycle to obtain the accumulated value of the pollutant concentration difference;
将所述污染物浓度差值累加值与所述风量相乘，计算出滤网在所述工作时间段的污染物过滤量。The accumulated value of the pollutant concentration difference is multiplied by the air volume to calculate the pollutant filtering capacity of the filter screen during the working time period.
上述方法中，所述风量根据空气净化器的风道长度、风道直径和风速档位或风机转速获得。In the above method, the air volume is obtained according to the air duct length, air duct diameter, wind speed gear or fan speed of the air cleaner.
上述方法中，所述将所述污染物过滤量与预设阈值进行比较，确定比较结果，包括：In the above method, the comparison of the pollutant filtration amount with a preset threshold value to determine the comparison result includes:
当所述总污染物过滤量小于预设阈值时，确定出滤网过滤效率低的比较结果；When the total pollutant filtering capacity is less than the preset threshold value, it is determined that the filtering efficiency of the filter screen is low;
当所述总污染物过滤量大于等于预设阈值时，确定出滤网过滤效率正常的比较结果。When the total pollutant filtering capacity is greater than or equal to the preset threshold, it is determined that the filtering efficiency of the filter screen is normal.
上述方法中，所述根据所述比较结果，输出滤网过滤状态提示信息，包括：In the above method, according to the comparison result, outputting the prompt information of the filtering state of the filter screen includes:
当所述比较结果为滤网过滤效率低的比较结果，输出滤网过滤状态低的提示信息；When the comparison result is a comparison result of low filtering efficiency of the filter, output a prompt message indicating that the filtering state of the filter is low;
当所述比较结果为滤网过滤效率正常的比较结果，输出滤网过滤状态正常的提示信息。When the comparison result is the comparison result that the filtering efficiency of the filter is normal, a prompt message indicating that the filtering state of the filter is normal is output.
本发明实施例提供了一种空气净化器，包括：An embodiment of the present invention provides an air purifier, comprising:
污染物浓度检测模块，用于检测空气净化器工作时间段滤网进风端污染物浓度和出风端污染物浓度；The pollutant concentration detection module is used to detect the pollutant concentration of the air inlet end and the air outlet end of the air purifier during the working period of the air purifier;
获取模块，用于获得空气净化器工作时间段的风量；The obtaining module is used to obtain the air volume of the air purifier during the working period;
计算模块，用于根据所述进风端污染物浓度、所述根据所述进风端污染物浓度、所述出风端污染物浓度和所述风量，计算出所述滤网在工作时间段内的污染物过滤量；A calculation module, configured to calculate the working hours of the filter according to the concentration of pollutants at the air inlet end, the concentration of pollutants at the air inlet end, the concentration of pollutants at the air outlet end, and the air volume. The amount of pollutants filtered within;
对比模块，用于将所述污染物过滤量与预设阈值进行比较，确定比较结果；A comparison module, configured to compare the pollutant filtration amount with a preset threshold to determine a comparison result;
提示模块，用于根据所述比较结果，输出滤网效率状态提示信息。The prompting module is configured to output prompting information of the filter screen efficiency state according to the comparison result.
上述净化器中，所述计算模块具体用于：In the above purifier, the calculation module is specifically used for:
所述滤网工作时间段至少包括一个检测周期，在所述检测周期检测空气净化器滤网进风端污染物浓度和出风端污染物浓度，获得所述检测周期滤网进风端污染物浓度和出风端污染物浓度；The working time period of the filter screen includes at least one detection period, during which the concentration of pollutants at the air inlet end of the filter screen of the air purifier and the concentration of pollutants at the air outlet end are detected, and the pollutant concentration at the air inlet end of the filter screen of the detection period is obtained. Concentration and concentration of pollutants at the air outlet;
对所述检测周期滤网进风端污染物浓度和出风端污染物浓度作差，获得污染物浓度差值；Making a difference between the pollutant concentration at the air inlet end of the filter screen and the pollutant concentration at the air outlet end of the detection cycle to obtain a difference in pollutant concentration;
将获得的各个检测周期污染物浓度差值进行累加，获得污染物浓度差值累加值；Accumulate the pollutant concentration difference obtained in each detection cycle to obtain the accumulated value of the pollutant concentration difference;
将所述污染物浓度差值累加值与所述风量相乘，计算出滤网在所述工作时间段的污染物过滤量。The accumulated value of the pollutant concentration difference is multiplied by the air volume to calculate the pollutant filtering capacity of the filter screen during the working time period.
上述净化器中，所述风量根据空气净化器的风道长度、风道直径和风速档位或风机转速获得。In the above-mentioned purifier, the air volume is obtained according to the air duct length, air duct diameter, wind speed gear or fan speed of the air purifier.
上述净化器中，所述对比模块，具体用于：In the above-mentioned purifier, the comparison module is specifically used for:
当所述总污染物过滤量小于预设阈值时，确定出滤网过滤效率低的比较结果；When the total pollutant filtering capacity is less than the preset threshold value, it is determined that the filtering efficiency of the filter screen is low;
当所述总污染物过滤量大于等于预设阈值时，确定出滤网过滤效率正常的比较结果。When the total pollutant filtering capacity is greater than or equal to the preset threshold, it is determined that the filtering efficiency of the filter screen is normal.
上述净化器中，所述提示模块，具体用于：In the above-mentioned purifier, the prompt module is specifically used for:
当所述比较结果为滤网过滤效率低的比较结果，输出滤网过滤状态低的提示信息；When the comparison result is a comparison result of low filtering efficiency of the filter, output a prompt message indicating that the filtering state of the filter is low;
当所述比较结果为滤网过滤效率正常的比较结果，输出滤网过滤状态正常的提示信息。When the comparison result is the comparison result that the filtering efficiency of the filter is normal, a prompt message indicating that the filtering state of the filter is normal is output.
本发明实施例提供的一种滤网过滤效率状态提示方法及空气净化器检测空气净化器工作时间段滤网进风端污染物浓度和出风端污染物浓度；获得空气净化器工作时间段的风量；根据所述进风端污染物浓度、所述出风端污染物浓度和所述风量，计算出所述滤网在工作时间段内的污染物过滤量；将所述污染物过滤量与预设阈值进行比较，确定比较结果；根据所述比较结果，输出滤网效率状态提示信息。如此，可以实时有效的计算空气净化器的净化量，当净化效量累计至预设值后，向用户发出清洗或更换滤网的提示信息。The embodiment of the present invention provides a method for prompting the state of filter filtration efficiency and an air purifier to detect the concentration of pollutants at the air inlet end of the filter screen and the concentration of pollutants at the air outlet end of the air purifier during the working time period of the air purifier; obtain the working time period of the air purifier air volume; according to the pollutant concentration at the air inlet end, the pollutant concentration at the air outlet end, and the air volume, calculate the pollutant filtering capacity of the filter screen during the working period; compare the pollutant filtering capacity with The preset threshold value is compared to determine the comparison result; according to the comparison result, the filter efficiency status prompt information is output. In this way, the purification amount of the air purifier can be calculated effectively in real time, and when the purification effect has accumulated to a preset value, a reminder message for cleaning or replacing the filter screen will be sent to the user.
附图说明Description of drawings
图1为本发明实施例滤网过滤效率状态提示方法的流程示意图；FIG. 1 is a schematic flow diagram of a method for prompting the filtration efficiency state of a filter according to an embodiment of the present invention;
图2为本发明实施例空气净化器的结构示意图；Fig. 2 is the structural representation of the air purifier of the embodiment of the present invention;
图3为本发明实施例空气净化器在实际应用中的结构示意图。Fig. 3 is a schematic structural diagram of an air purifier according to an embodiment of the present invention in practical application.
具体实施方式detailed description
下面结合附图及具体实施例对本发明再作进一步详细说明。The present invention will be described in further detail below in conjunction with the accompanying drawings and specific embodiments.
图1为本发明实施例滤网过滤效率状态提示方法的流程示意图，如图1所示，本发明实施例滤网过滤效率状态提示方法的流程包括以下步骤：Fig. 1 is a schematic flow diagram of a method for prompting the state of filter efficiency of the filter according to an embodiment of the present invention. As shown in Fig. 1 , the process of the method for prompt of the state of filter filtration efficiency according to the embodiment of the present invention includes the following steps:
步骤101：检测空气净化器工作时间段滤网进风端污染物浓度和出风端污染物浓度；获得空气净化器工作时间段的风量；Step 101: Detect the concentration of pollutants at the air inlet end and the air outlet end of the filter during the working hours of the air purifier; obtain the air volume during the working hours of the air purifier;
其中，以滤网为界，迎风方向为进风端，出风方向为出风端；在进风端和出风端各设置至少一个污染物浓度检测模块，其中，污染物浓度检测模块的数量可以根据实际需求进行设置；所述风量根据空气净化器的风道长度、风道直径和风速档位或风机转速获得；Among them, with the filter screen as the boundary, the windward direction is the air inlet end, and the wind outlet direction is the air outlet end; at least one pollutant concentration detection module is respectively set at the air inlet end and the air outlet end, wherein the number of pollutant concentration detection modules It can be set according to actual needs; the air volume is obtained according to the air duct length, air duct diameter, wind speed gear or fan speed of the air purifier;
所述污染物浓度检测模块可以是细颗粒物(PM2.5)检测传感器、甲醛浓度检测传感器、挥发性有机化合物(VOC，Volatile Organic Compounds)检测传感器等；The pollutant concentration detection module may be a fine particle (PM2.5) detection sensor, a formaldehyde concentration detection sensor, a volatile organic compound (VOC, Volatile Organic Compounds) detection sensor, etc.;
在实际应用中，所述获得的风量，可以通过读取风机的转速，或者根空气净化器的当前工作的档位，再根据空气净化器进风直径和风道的长度进行计算获得。In practical applications, the obtained air volume can be obtained by reading the rotation speed of the fan, or the current operating gear of the air purifier, and then calculating according to the air inlet diameter of the air purifier and the length of the air duct.
步骤102：根据所述进风端污染物浓度、所述出风端污染物浓度和所述风量，计算出所述滤网在工作时间段内的污染物过滤量；Step 102: According to the concentration of pollutants at the air inlet end, the concentration of pollutants at the air outlet end, and the air volume, calculate the pollutant filtering capacity of the filter during the working period;
其中，所述滤网工作时间段至少包括一个检测周期，在所述检测周期检测空气净化器滤网进风端污染物浓度和出风端污染物浓度，获得所述检测周期滤网进风端污染物浓度和出风端污染物浓度；Wherein, the working time period of the filter screen includes at least one detection cycle, and the concentration of pollutants at the air inlet end of the filter screen of the air purifier and the pollutant concentration at the air outlet end are detected during the detection cycle, and the air intake end of the filter screen of the detection cycle is obtained. Pollutant concentration and pollutant concentration at the air outlet;
对所述检测周期滤网进风端污染物浓度和出风端污染物浓度作差，获得污染物浓度差值；Making a difference between the pollutant concentration at the air inlet end of the filter screen and the pollutant concentration at the air outlet end of the detection cycle to obtain a difference in pollutant concentration;
将获得的各个检测周期污染物浓度差值进行累加，获得污染物浓度差值累加值；Accumulate the pollutant concentration difference obtained in each detection cycle to obtain the accumulated value of the pollutant concentration difference;
将所述污染物浓度差值累加值与所述风量相乘，计算出滤网在所述工作时间段的污染物过滤量；multiplying the cumulative value of the pollutant concentration difference by the air volume to calculate the pollutant filtering capacity of the filter during the working period;
进一步的，所述一个测量周期污染物净化量可以通过公式E＝V*D获得，其中，E表示污染物净化量；V表示风量；D表示各个检测周期污染物浓度差值累加值；其中，Further, the pollutant purification amount in one measurement cycle can be obtained by the formula E=V*D, wherein, E represents the pollutant purification amount; V represents the air volume; D represents the accumulated value of the pollutant concentration difference in each detection cycle; wherein,
D可以通过∑(D1-D2)获得，D1表示一个检测周期进风端的污染物浓度；D2表示一个检测周期出风端的污染物浓度。D can be obtained by ∑ (D1-D2) , D1 represents the pollutant concentration at the air inlet end of a detection cycle; D2 represents the pollutant concentration at the air outlet end of a detection cycle.
步骤103：将所述污染物过滤量与预设阈值进行比较，确定比较结果；Step 103: Comparing the pollutant filtering amount with a preset threshold value, and determining the comparison result;
其中，当所述净化效率值小于预设阈值时，确定出滤网过滤效率低的比较结果；当所述净化效率值大于等于预设阈值时，确定出滤网过滤效率正常的比较结果。Wherein, when the purification efficiency value is less than a preset threshold value, it is determined that the filtering efficiency of the filter is low; when the purification efficiency value is greater than or equal to the preset threshold, it is determined that the filtering efficiency of the filter is normal.
步骤104：根据所述比较结果，输出滤网效率状态提示信息。Step 104: According to the comparison result, output filter screen efficiency status prompt information.
其中，当所述比较结果为滤网过滤效率低的比较结果，输出滤网过滤状态低的提示信息；Wherein, when the comparison result is a comparison result of low filtering efficiency of the filter screen, output a prompt message indicating that the filtering state of the filter screen is low;
当所述比较结果为滤网过滤效率正常的比较结果，输出滤网过滤状态正常的提示信息。When the comparison result is the comparison result that the filtering efficiency of the filter is normal, a prompt message indicating that the filtering state of the filter is normal is output.
在实际应用中，所述滤网过滤效率低的提示信息可以通过空气净化器上的显示面板显示、指示灯闪烁、APP消息推送等方式提醒用户清洗或更换滤网。In practical applications, the prompt information of the low filtering efficiency of the filter screen can remind the user to clean or replace the filter screen through display on the display panel on the air purifier, flashing of the indicator light, push of an APP message, and the like.
图2为本发明实施例空气净化器的结构示意图，如图2所示，本发明实施例空气净化器包括：Fig. 2 is the structural representation of the air purifier of the embodiment of the present invention, as shown in Fig. 2, the air purifier of the embodiment of the present invention comprises:
污染物浓度检测模块201，用于检测空气净化器工作时间段滤网进风端污染物浓度和出风端污染物浓度；The pollutant concentration detection module 201 is used to detect the concentration of pollutants at the air inlet end and the air outlet end of the air purifier during the working period of the air purifier;
获取模块202，用于获得空气净化器工作时间段的风量；An acquisition module 202, configured to acquire the air volume of the air cleaner during the working hours;
计算模块203，用于根据所述进风端污染物浓度、所述根据所述进风端污染物浓度、所述出风端污染物浓度和所述风量，计算出所述滤网在工作时间段内的污染物过滤量；Calculation module 203, for calculating the working time of the filter according to the concentration of pollutants at the air inlet end, the concentration of pollutants at the air inlet end, the concentration of pollutants at the air outlet end, and the air volume. Pollutant filtration capacity in the section;
对比模块204，用于将所述污染物过滤量与预设阈值进行比较，确定比较结果；A comparison module 204, configured to compare the amount of pollutant filtration with a preset threshold to determine a comparison result;
提示模块205，用于根据所述比较结果，输出滤网效率状态提示信息。The prompt module 205 is configured to output filter screen efficiency state prompt information according to the comparison result.
其中，所述计算模块20具体用于：Wherein, the calculation module 20 is specifically used for:
所述滤网工作时间段至少包括一个检测周期，在所述检测周期检测空气净化器滤网进风端污染物浓度和出风端污染物浓度，获得所述检测周期滤网进风端污染物浓度和出风端污染物浓度；The working time period of the filter screen includes at least one detection period, during which the concentration of pollutants at the air inlet end of the filter screen of the air purifier and the concentration of pollutants at the air outlet end are detected, and the pollutant concentration at the air inlet end of the filter screen of the detection period is obtained. Concentration and concentration of pollutants at the air outlet;
对所述检测周期滤网进风端污染物浓度和出风端污染物浓度作差，获得污染物浓度差值；Making a difference between the pollutant concentration at the air inlet end of the filter screen and the pollutant concentration at the air outlet end of the detection cycle to obtain a difference in pollutant concentration;
将获得的各个检测周期污染物浓度差值进行累加，获得污染物浓度差值累加值；Accumulate the pollutant concentration difference obtained in each detection cycle to obtain the accumulated value of the pollutant concentration difference;
将所述污染物浓度差值累加值与所述风量相乘，计算出滤网在所述工作时间段的污染物过滤量。The accumulated value of the pollutant concentration difference is multiplied by the air volume to calculate the pollutant filtering capacity of the filter screen during the working time period.
其中，所述风量根据空气净化器的风道长度、风道直径和风速档位或风机转速获得。Wherein, the air volume is obtained according to the air duct length, air duct diameter, wind speed gear or fan speed of the air purifier.
上述净化器中，所述对比模块，具体用于：In the above-mentioned purifier, the comparison module is specifically used for:
当所述总污染物过滤量小于预设阈值时，确定出滤网过滤效率低的比较结果；When the total pollutant filtering capacity is less than the preset threshold value, it is determined that the filtering efficiency of the filter screen is low;
当所述总污染物过滤量大于等于预设阈值时，确定出滤网过滤效率正常的比较结果。When the total pollutant filtering capacity is greater than or equal to the preset threshold, it is determined that the filtering efficiency of the filter screen is normal.
上述净化器中，所述提示模块205，具体用于：In the above-mentioned purifier, the prompt module 205 is specifically used for:
当所述比较结果为滤网过滤效率低的比较结果，输出滤网过滤状态低的提示信息；When the comparison result is a comparison result of low filtering efficiency of the filter, output a prompt message indicating that the filtering state of the filter is low;
当所述比较结果为滤网过滤效率正常的比较结果，输出滤网过滤状态正常的提示信息。When the comparison result is the comparison result that the filtering efficiency of the filter is normal, a prompt message indicating that the filtering state of the filter is normal is output.
在实际应用中，所述计算模块203、对比模块204、提示模块205可由位于空气净化器上的中央处理器(CPU，Central Processing Unit)、或微处理器(MPU，Micro ProcessorUnit)、或数字信号处理器(DSP，Digital Signal Processor)、或现场可编程门阵列(FPGA，Field Programmable Gate Array)实现。In practical applications, the calculation module 203, the comparison module 204, and the prompt module 205 can be provided by a central processing unit (CPU, Central Processing Unit) or a microprocessor (MPU, Micro ProcessorUnit), or a digital signal on the air cleaner. Processor (DSP, Digital Signal Processor), or Field Programmable Gate Array (FPGA, Field Programmable Gate Array) implementation.
需要说明的是，各模块的实现功能可参照前述图1中提示方法的相关描述而理解，这里不再赘述。It should be noted that the implementation functions of each module can be understood with reference to the relevant description of the prompting method in FIG. 1 , and will not be repeated here.
下面对本发明实施例滤网过滤效率状态提示方法以及空气净化器的结构进行详细说明。The method for prompting the filtering efficiency state of the filter according to the embodiment of the present invention and the structure of the air purifier will be described in detail below.
图3为本发明实施例滤网过滤效率状态提示方法实际应用的结构示意图，如图3所示，本发明实施例在实际中的应用包括：Fig. 3 is a structural schematic diagram of the practical application of the method for prompting the filter efficiency state of the filter screen according to the embodiment of the present invention. As shown in Fig. 3 , the practical application of the embodiment of the present invention includes:
进风端污染物浓度检测模块301、滤网302、出风端污染物浓度检测模块303、获取模块304、计算模块305、对比模块306以及提示模块307；其中，The pollutant concentration detection module 301 at the air inlet end, the filter screen 302, the pollutant concentration detection module 303 at the air outlet end, the acquisition module 304, the calculation module 305, the comparison module 306 and the prompt module 307; wherein,
当空气净化器开始工作后，空气净化器进风端设置的污染物浓度检测模块301和出风端污染物浓度检测模块303在工作时间段内的每个检测周期至少检测一个数据或多个数据，将获得的污染物浓度数据发送给计算模块304，同时获取模块304获得空气净化器风机的转速或档位，再计算出滤网的在各个检测周期的污染物过滤两，最后，将污染物过滤量进行累加，具体的，所述一个测量周期污染物净化量可以通过公式E＝V*D获得，其中，E表示污染物净化量；V表示风量；D表示各个检测周期污染物浓度差值累加值；其中，D可以通过∑(D1-D2)获得，D1表示一个检测周期进风端的污染物浓度；D2表示一个检测周期出风端的污染物浓度；对比模块305设定一个阈值，将所述累加的污染物过滤量与所述设置的阈值进行对比，如果所述累加的污染物过滤量大于所述预设的阈值，则表明滤网已经不能有效的过滤污染物，此时，提示模块306发出清洗或更换滤网的信号；如果所述累加的污染物过滤量小于所述预设的阈值，则继续计算空气净化器的污染物净化量，直至污染物净化量达到预设的阈值，发出清洗或更换滤网的信号。When the air purifier starts working, the pollutant concentration detection module 301 and the pollutant concentration detection module 303 at the air inlet end of the air purifier detect at least one data or multiple data in each detection cycle during the working period. , send the obtained pollutant concentration data to the calculation module 304, and at the same time, the acquisition module 304 obtains the speed or gear of the fan of the air cleaner, and then calculates the pollutant filtration rate of the filter screen in each detection cycle, and finally, the pollutant The amount of filtration is accumulated. Specifically, the amount of pollutant purification in one measurement cycle can be obtained by the formula E=V*D, where E represents the amount of pollutant purification; V represents the air volume; D represents the difference in concentration of pollutants in each detection cycle Accumulated value; Wherein, D can be obtained by ∑ (D1-D2) , and D1 represents the pollutant concentration of air inlet end of a detection cycle; D2 represents the pollutant concentration of air outlet end of a detection cycle; Comparison module 305 sets a threshold value, and all The accumulated pollutant filtering amount is compared with the set threshold value. If the accumulated pollutant filtering amount is greater than the preset threshold value, it indicates that the filter screen cannot effectively filter pollutants. At this time, the prompt module 306 Send a signal to clean or replace the filter screen; if the accumulated pollutant filtering volume is less than the preset threshold value, continue to calculate the pollutant purification volume of the air cleaner until the pollutant purification volume reaches the preset threshold value, Signal to clean or replace the filter.
综上所述，检测空气净化器工作时间段滤网进风端污染物浓度和出风端污染物浓度；获得空气净化器工作时间段的风量；根据所述进风端污染物浓度、所述出风端污染物浓度和所述风量，计算出所述滤网在工作时间段内的污染物过滤量；将所述污染物过滤量与预设阈值进行比较，确定比较结果；根据所述比较结果，输出滤网效率状态提示信息。如此，可以在空气净化器运行过程中实时有效的空气净化器的污染物净化量，当污染物净化量达到预设的阈值后，发出清洗或更换滤网的提示信息。To sum up, detect the concentration of pollutants at the air inlet end and the air outlet end of the air purifier during the working time period of the air purifier; obtain the air volume during the working time period of the air purifier; The pollutant concentration at the air outlet end and the air volume are used to calculate the pollutant filtering capacity of the filter screen during the working period; the pollutant filtering capacity is compared with a preset threshold to determine the comparison result; according to the comparison As a result, filter screen efficiency status prompt information is output. In this way, the pollutant purification amount of the air purifier can be effectively checked in real time during the operation of the air purifier, and when the pollutant purification amount reaches a preset threshold, a prompt message for cleaning or replacing the filter screen is issued.
以上所述，仅为本发明的较佳实施例而已，并非用于限定本发明的保护范围。The above descriptions are only preferred embodiments of the present invention, and are not intended to limit the protection scope of the present invention.
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