CN105299715A - Range hood and control method thereof - Google Patents
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- 239000003517 fume Substances 0.000 claims abstract description 75
- 238000001514 detection method Methods 0.000 claims abstract description 37
- 239000006233 lamp black Substances 0.000 claims abstract 4
- 238000012545 processing Methods 0.000 claims description 16
- 238000010411 cooking Methods 0.000 claims description 9
- 239000000779 smoke Substances 0.000 claims description 9
- 238000004364 calculation method Methods 0.000 claims description 6
- 239000004071 soot Substances 0.000 description 7
- 230000007423 decrease Effects 0.000 description 4
- 230000035945 sensitivity Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 230000003993 interaction Effects 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 238000004891 communication Methods 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 239000011521 glass Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
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- 239000000523 sample Substances 0.000 description 2
- 230000003321 amplification Effects 0.000 description 1
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- 239000007789 gas Substances 0.000 description 1
- 238000003199 nucleic acid amplification method Methods 0.000 description 1
- 238000007781 pre-processing Methods 0.000 description 1
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- 230000008054 signal transmission Effects 0.000 description 1
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Abstract
本发明涉及一种油烟机及其控制方法，包括油烟机本体，在所述油烟机本体内设置有控制装置、风机和油烟检测装置，所述油烟检测装置包括一个红外线发射器和两个红外线接收器，其中一个红外线接收器与红外线发射器相向设置在所述油烟机本体进风口的两侧用于采集透过油烟的红外线，另一个红外线接收器与红外线发射器安装在同一侧用于采集被油烟阻挡反射的红外线，所述红外线发射器和红外线接收器与所述控制装置连接，所述控制装置根据红外线检测信号控制所述风机的转速。本发明通过差值比较法确定油烟的浓度并进而控制风机的转速，油烟有无变化与环境光线变化等无关，最大可能的去除了干扰因素的存在，提高油烟浓度的检测精度。
The invention relates to a range hood and a control method thereof, comprising a range hood body, a control device, a blower fan and a lampblack detection device are arranged in the range hood body, and the lampblack detection device includes an infrared transmitter and two infrared receivers One of the infrared receivers is installed opposite to the infrared emitter on both sides of the air inlet of the range hood body to collect infrared rays passing through the oil fume, and the other infrared receiver is installed on the same side as the infrared emitter to collect the detected infrared rays. The oil fumes block the reflected infrared rays, the infrared emitter and the infrared receiver are connected with the control device, and the control device controls the speed of the fan according to the infrared detection signal. The present invention determines the concentration of oil fume through the difference comparison method and then controls the rotating speed of the fan. The change of oil fume has nothing to do with the change of ambient light, etc., the existence of interference factors is eliminated to the greatest extent possible, and the detection accuracy of oil fume concentration is improved.
Description
技术领域technical field
本发明涉及一种油烟机，具体地，涉及一种具有油烟检测功能的油烟机及其控制方法，属于油烟机技术领域。The invention relates to a range hood, in particular to a range hood with a function of detecting oil smoke and a control method thereof, belonging to the technical field of range hoods.
背景技术Background technique
目前厨房油烟机的启动都是通过手动或者燃气灶点火来启动的，而停止都是通过手动或者是灶具关闭后延时一段时间关闭的。对于手动启停和调速方式，经常出现忘记开启、关闭的情况，尤其是时间比较紧张的时候，或者手上沾着油，出现操作不灵或者将油弄到烟机操作面板上。而对于灶具控制启停的方式，其油烟机关机是通过灶具关火后延时一段时间来实现的，与有无油烟残留没有直接关系，可能出现油烟早已没有残留烟机却还在转，或者油烟还有残留，烟机却停了。At present, the start of the kitchen range hood is all started manually or by ignition of the gas stove, and the stop is closed manually or after a delay of a period of time after the stove is turned off. For the manual start-stop and speed regulation methods, it is often forgotten to turn on and off, especially when the time is tight, or the hands are stained with oil, and the operation fails or the oil gets on the operation panel of the hood. As for the way to control the start and stop of the cooker, the cooking fume is turned off by delaying for a period of time after the cooker is turned off. It has no direct relationship with whether there is any cooking fume left. The oil fume still remained, but the hood stopped.
为了改进上述问题，目前部分油烟机具有风力自动调节的功能，在油烟机本体内设置控制器，并在油烟机进风口处设置红外线发射装置和红外线接收装置，红外线发射装置和红外线接收装置各设置一个，相向设置设于进风口的两侧，油烟从红外线发射装置和红外线接收装置之间穿过，红外线发射装置和红外线接收装置与控制器连接，控制器根据红外线强度信号控制风机的启停或转速。但这种方式，因为只能接收穿过油烟的红外线，所以容易受到自然界的太阳光、厨房内的灯光、油烟机上安装的灯光等外界光线的干扰，而降低油烟浓度检测的灵敏度，出现风机误动作等现象。In order to improve the above problems, at present, some range hoods have the function of automatic wind adjustment. A controller is arranged in the range hood body, and an infrared emitting device and an infrared receiving device are arranged at the air inlet of the range hood. One, facing each other and set on both sides of the air inlet, oil fume passes between the infrared emitting device and the infrared receiving device, the infrared emitting device and the infrared receiving device are connected to the controller, and the controller controls the start and stop of the fan according to the infrared intensity signal Rotating speed. But in this way, because it can only receive infrared rays that pass through the oil fume, it is easily interfered by external light such as natural sunlight, lights in the kitchen, lights installed on the range hood, etc., which reduces the sensitivity of the detection of oil fume concentration. Misoperation etc.
发明内容Contents of the invention
本发明主要目的在于解决上述问题和不足，提供一种可大幅提升油烟检测灵敏度，使控制更为精确的油烟机及其控制方法。The main purpose of the present invention is to solve the above-mentioned problems and deficiencies, and to provide a range hood and a control method thereof that can greatly improve the detection sensitivity of oil fume and make the control more precise.
为实现上述目的，本发明的技术方案是：For realizing the above object, technical scheme of the present invention is:
一种油烟机，包括油烟机本体，在所述油烟机本体内设置有控制装置、风机和油烟检测装置，所述油烟检测装置包括一个红外线发射器和两个红外线接收器，其中一个红外线接收器与红外线发射器相向设置在所述油烟机本体进风口的两侧用于采集透过油烟的红外线，另一个红外线接收器与红外线发射器安装在同一侧用于采集被油烟阻挡反射的红外线，所述红外线发射器和红外线接收器与所述控制装置连接，所述控制装置根据透过和反射的红外线检测信号控制所述风机的转速。A range hood, comprising a range hood body, in which a control device, a blower fan and an oil fume detection device are arranged, and the oil fume detection device includes an infrared transmitter and two infrared receivers, one of which is an infrared receiver The infrared transmitter is arranged on both sides of the air inlet of the range hood body to collect infrared rays passing through the oil fume, and the other infrared receiver is installed on the same side as the infrared transmitter to collect infrared rays blocked and reflected by the oil fume. The infrared transmitter and the infrared receiver are connected with the control device, and the control device controls the speed of the fan according to the transmitted and reflected infrared detection signals.
进一步，所述控制装置中包括数据处理单元及控制单元，所述数据处理单元与两个所述红外线接收器连接用于对采集到的透过油烟的红外线和被反射的红外线的变化差值进行计算，并将结果与标准差值进行比较，得出相对应的风机转速值并输出给所述控制单元，由所述控制单元控制风机转速。Further, the control device includes a data processing unit and a control unit, and the data processing unit is connected to the two infrared receivers to perform a change difference between the collected infrared rays transmitted through the oil fume and the reflected infrared rays. Calculate and compare the result with the standard deviation value to obtain the corresponding fan speed value and output it to the control unit, and the control unit controls the fan speed.
进一步，所述的差值计算为分别计算在无油烟状态和有油烟状态下透过油烟的红外线的变化差值和被反射的红外线的变化差值，再取两个差值的总和得出总差值，利用总差值与标准差值进行比较。Further, the calculation of the difference is to calculate the change difference of the infrared ray transmitted through the oil fume and the change difference of the reflected infrared ray in the state of no oil fume and the state of oil fume respectively, and then take the sum of the two differences to obtain the total Difference, using the total difference to compare with the standard deviation.
进一步，安装在同侧的红外线发射器和红外线接收器固定安装在一个PCB板上。Further, the infrared emitter and the infrared receiver installed on the same side are fixedly installed on a PCB board.
进一步，在所述油烟机本体上还设置有人机交互界面，所述人机交互界面与所述控制装置连接。Further, a human-computer interaction interface is also provided on the range hood body, and the human-computer interaction interface is connected with the control device.
本发明的另一个技术方案是：Another technical scheme of the present invention is:
一种油烟机的控制方法，设置于进风口一侧的红外线发射器持续发射红外线信号，设置于进风口另一侧的红外线接收器采集透过油烟的红外线信号，与红外线发射器位于同侧的另一个红外线接收器采集被油烟阻挡反射的红外线信号，两个红外线接收器持续向控制装置发送采集到的红外线信号；控制装置对接收到的透过油烟的红外线和被反射的红外线的变化差值进行计算，并根据差值计算的结果判断油烟浓度；控制装置将计算得出的实际差值与预先存储的标准差值进行比较，得出需要的风机转速值；控制装置根据上述得出的风机转速值控制风机开停及运转速度。A method for controlling a range hood, wherein an infrared emitter arranged on one side of an air inlet continuously emits infrared signals, an infrared receiver arranged on the other side of the air inlet collects infrared signals transmitted through oil fumes, and an infrared emitter on the same side as the infrared emitter The other infrared receiver collects the infrared signal blocked and reflected by the oil fume, and the two infrared receivers continue to send the collected infrared signal to the control device; Carry out calculations, and judge the oil fume concentration according to the result of the difference calculation; the control device compares the calculated actual difference with the pre-stored standard deviation value, and obtains the required fan speed value; The rotation speed value controls the start-stop and operation speed of the fan.
进一步，所述差值计算为分别计算在无油烟状态和有油烟状态下透过油烟的红外线的变化差值和被反射的红外线的变化差值，再取两个差值的总和得出总差值，利用总差值与标准差值进行比较。Further, the difference is calculated as the difference between the infrared rays transmitted through the oil fume and the reflected infrared rays under the state of no oil fume and the state of oil fume, respectively, and then the sum of the two differences is used to obtain the total difference value, using the total difference value to compare with the standard deviation value.
进一步，当计算得出的总差值大于0时，判断有油烟，即启动风机；当计算得出的总差值等于0时，判断无油烟或油烟已清除干净，即关闭风机。Further, when the calculated total difference is greater than 0, it is judged that there is oil fume, that is, the fan is started; when the calculated total difference is equal to 0, it is judged that there is no oil fume or that the oil fume has been removed, that is, the fan is turned off.
进一步，所述标准差值分为多个区间范围，分别为0、0-A1、A1-A2、……An-1-An，对应风机转速的不同档位，分别为停机档、1档、2档、……、N档。Further, the standard deviation value is divided into a plurality of ranges, respectively 0, 0-A 1 , A 1 -A 2 , ... A n-1 -A n , corresponding to different gears of the fan speed, which are respectively stop file, 1 file, 2 file, ..., N file.
进一步，所述控制装置连续计算差值，实际差值连续与标准差值进行比较，或所述控制装置每隔一固定周期将实际差值与标准差值进行计算比较一次。Further, the control device calculates the difference continuously, and the actual difference is continuously compared with the standard deviation value, or the control device calculates and compares the actual difference value with the standard deviation value once every fixed period.
综上内容，本发明所述的一种油烟机及其控制方法，在油烟机上设置两个红外线接收器，不但接收透射过油烟的红外线强度，同样检测被油烟阻挡反射的红外线强度，并通过差值比较法确定油烟的浓度进而控制风机的转速，油烟有无变化与环境光线变化等无关，最大可能的去除了干扰因素的存在，提高油烟浓度的检测灵敏度，也更加精确地控制油烟机的工作状态，避免误动作，不会存在抽不净或者油烟机空转的情况，实现节能环保。To sum up, in the range hood and its control method according to the present invention, two infrared receivers are arranged on the range hood to not only receive the infrared intensity transmitted through the oil fume, but also detect the intensity of infrared rays blocked and reflected by the oil fume, and pass The difference comparison method determines the concentration of oil fume and then controls the speed of the fan. The change of oil fume has nothing to do with the change of ambient light. It eliminates the existence of interference factors as much as possible, improves the detection sensitivity of oil fume concentration, and controls the range hood more accurately. In the working state, avoid misoperation, there will be no situation of dirty suction or idling of the range hood, and energy saving and environmental protection will be realized.
附图说明Description of drawings
图1是本发明油烟机结构示意图；Fig. 1 is a schematic structural view of the range hood of the present invention;
图2是本发明检测原理图；Fig. 2 is the detection schematic diagram of the present invention;
图3是本发明油烟机控制系统框图；Fig. 3 is a block diagram of the range hood control system of the present invention;
图4是本发明工作流程图。Fig. 4 is a working flow diagram of the present invention.
如图1至图4所示，油烟机本体1，控制装置2，风机3，排烟风道4，进风口5，红外线发射器6，第一红外线接收器7，第二红外线接收器8，PCB板9，PCB板10，人机交互界面11，数据处理单元12，控制单元13。As shown in Figures 1 to 4, the range hood body 1, the control device 2, the fan 3, the smoke exhaust duct 4, the air inlet 5, the infrared emitter 6, the first infrared receiver 7, the second infrared receiver 8, PCB board 9 , PCB board 10 , human-computer interaction interface 11 , data processing unit 12 , and control unit 13 .
具体实施方式detailed description
下面结合附图与具体实施方式对本发明作进一步详细描述：Below in conjunction with accompanying drawing and specific embodiment the present invention is described in further detail:
如图1所示，本发明提供的一种油烟机，包括油烟机本体1，在油烟机本体1内设置有控制装置2、风机3和排烟风道4，控制装置2用于与风机3的控制模块连接以控制风机3的启停及转速，风机3安装在排烟风道4内。在用户做饭时，油烟和水蒸汽会经过进风口5进入油烟机本体1内，并在风机3的作用下顺着排烟风道4排出。As shown in Figure 1, a range hood provided by the present invention includes a range hood body 1, a control device 2, a fan 3 and a smoke exhaust duct 4 are arranged in the range hood body 1, and the control device 2 is used to communicate with the fan 3 The control module is connected to control the start, stop and speed of the fan 3, and the fan 3 is installed in the smoke exhaust duct 4. When the user cooks, oil fume and water vapor will enter the range hood body 1 through the air inlet 5 and be discharged along the smoke exhaust duct 4 under the action of the fan 3 .
如图1和图2所示，油烟机还包括用于检测油烟和水蒸汽有无的油烟检测装置，本实施例中，油烟检测装置包括一个大功率的红外线发射器6和两个红外线接收器，分别为第一红外线接收器7和第二红外线接收器8，其中第一红外线接收器7与红外线发射器6相向设置在油烟机本体1进风口5两侧的中心位置，第二红外线接收器8与红外线发射器6安装在同一侧，红外线发射器6和第二红外线接收器8固定安装在一个PCB板9上，第一红外线接收器7固定安装在另一个PCB板10上，PCB板9和PCB板10相对固定在油烟机本体1的内部，红外线发射器6、第一红外线接收器7和第二红外线接收器8的探头伸出油烟机本体1的壳体。红外线发射器6、第一红外线接收器7和第二红外线接收器8与控制装置2连接，控制装置2与风机3的控制模块连接。As shown in Fig. 1 and Fig. 2, the range hood also includes an oil fume detection device for detecting the presence or absence of oil fume and water vapor. In this embodiment, the oil fume detection device includes a high-power infrared transmitter 6 and two infrared receivers , are respectively the first infrared receiver 7 and the second infrared receiver 8, wherein the first infrared receiver 7 and the infrared emitter 6 are arranged at the center of both sides of the air inlet 5 of the range hood body 1, and the second infrared receiver 8 is installed on the same side as the infrared emitter 6, the infrared emitter 6 and the second infrared receiver 8 are fixedly installed on a PCB board 9, the first infrared receiver 7 is fixedly installed on another PCB board 10, and the PCB board 9 The PCB board 10 is relatively fixed inside the range hood body 1 , and the probes of the infrared transmitter 6 , the first infrared receiver 7 and the second infrared receiver 8 protrude from the shell of the range hood body 1 . The infrared transmitter 6 , the first infrared receiver 7 and the second infrared receiver 8 are connected to the control device 2 , and the control device 2 is connected to the control module of the fan 3 .
如图2所示，因为油烟和水蒸汽的存在，从红外线发射器6发射的特定光谱范围的光波在经过油烟时，此波段的能量被吸收、散射后被另一端第一红外线接收器7接收，同时反射回一部分能量被同一端的第二红外线接收器8接收。As shown in Figure 2, due to the presence of soot and water vapor, when the light waves of a specific spectral range emitted from the infrared emitter 6 pass through the soot, the energy in this band is absorbed, scattered and then received by the first infrared receiver 7 at the other end , while a part of the energy reflected back is received by the second infrared receiver 8 at the same end.
本实施例中，因为厨房环境的特殊性，在红外线发射器6、第一红外线接收器7和第二红外线接收器8的探头外侧均固定一个玻璃罩(图中未示出)，用户可以定期擦试清洗玻璃罩，保证信号发射和接收的灵敏度。In this embodiment, because of the particularity of the kitchen environment, a glass cover (not shown) is fixed outside the probes of the infrared transmitter 6, the first infrared receiver 7 and the second infrared receiver 8, and the user can regularly Wipe and clean the glass cover to ensure the sensitivity of signal transmission and reception.
在油烟机本体1上还设置有人机交互界面11，人机交互界面11与控制装置2连接，用户可以在人机交互界面11上进行所需要的操作，同时可以显示油烟机的工作状态，还可以显示控制装置2的关于油烟浓度的检测值等信息。A man-machine interface 11 is also provided on the range hood body 1, and the man-machine interface 11 is connected with the control device 2, and the user can perform required operations on the man-machine interface 11, and can display the working status of the range hood at the same time. Information such as the detection value of the oil fume concentration of the control device 2 can be displayed.
如图3所示，控制装置2中包括数据处理单元12及控制单元13，数据处理单元12通过光电转换器将发生能量变化的光谱转换为电信号，通过驱动芯片，完成双采样、模数转换、增益放大功能；以FPGA作为采集系统控制与处理核心，完成采集的同时实现滤波、Gamma校正预处理算法。具体地，数据处理单元12与第一红外线接收器7和第二红外线接收器8连接，数据处理单元12接收第一红外线接收器7和第二红外线接收器8采集的红外线信号，并将两个红外线信号进行差值计算，在数据处理单元12中还预先存储有标准差值与风机转速的对应关系，将计算得出的实际差值与预先存储的标准差值进行比较，得出相对应的风机转速值，并将结果输出给控制单元13，控制单元13与风机3的控制模块连接，由控制单元13根据接收的风机转速值控制风机3的转速，油烟浓度高时，风机3转速大，油烟浓度小时，风机3的转速低。As shown in Figure 3, the control device 2 includes a data processing unit 12 and a control unit 13. The data processing unit 12 converts the energy-changing spectrum into an electrical signal through a photoelectric converter, and completes double sampling and analog-to-digital conversion through a driver chip. , Gain amplification function; FPGA is used as the control and processing core of the acquisition system, and the filtering and Gamma correction preprocessing algorithms are implemented while completing the acquisition. Specifically, the data processing unit 12 is connected with the first infrared receiver 7 and the second infrared receiver 8, and the data processing unit 12 receives the infrared signals collected by the first infrared receiver 7 and the second infrared receiver 8, and converts the two Infrared signals are used to calculate the difference, and the corresponding relationship between the standard deviation and the fan speed is stored in the data processing unit 12, and the calculated actual difference is compared with the pre-stored standard deviation to obtain the corresponding Fan speed value, and output the result to the control unit 13, the control unit 13 is connected with the control module of the fan 3, and the control unit 13 controls the speed of the fan 3 according to the received fan speed value, when the concentration of oily smoke is high, the speed of the fan 3 is high, When the concentration of soot is low, the speed of fan 3 is low.
控制单元13和现有市面上的油烟机风机的控制模块通信模式相同，接口型号一致，和电源板的通信协议方式一致；数据处理单元12处理后的数据直接通过控制单元13传输到风机的控制模块以达到控制风机速度的目的，同时，整个系统由控制单元供电，通过油烟机电源板联动接口提供5V直流电。The control unit 13 has the same communication mode as the control module of the range hood fan on the existing market, the interface type is consistent, and the communication protocol mode is consistent with the power board; the data processed by the data processing unit 12 is directly transmitted to the control unit 13 of the fan. The module is used to control the speed of the fan. At the same time, the whole system is powered by the control unit, and 5V DC is provided through the linkage interface of the range hood power board.
差值计算为分别计算在无油烟状态和有油烟状态下透过油烟的红外线变化差值和被反射的红外线变化差值，再取两个差值的总和得出总差值，根据总差值的变化判断油烟的浓度。The difference is calculated by separately calculating the difference of the infrared change through the oil fume and the reflected infrared change in the state of no oil fume and the state of oil fume, and then taking the sum of the two differences to obtain the total difference, according to the total difference Judging the concentration of oil fume by the change.
具体的差值计算方法是：The specific difference calculation method is:
无油烟时，设定第一红外线接收器7接收的红外线信号检测值为T0，设定第二红外线接收器8接收的红外线信号的检测值为F0，检测值T0和F0存储在控制装置2的数据处理单元12中，作为计算变化差值的基准，每次开启油烟机时，检测值T0和F0均需重新设定，减少每次使用时外界光源对检测的影响。When there is no oil fume, set the detection value of the infrared signal received by the first infrared receiver 7 to T0, set the detection value of the infrared signal received by the second infrared receiver 8 to F0, and store the detection values T0 and F0 in the control device 2 In the data processing unit 12, as the basis for calculating the variation difference, each time the range hood is turned on, the detection values T0 and F0 need to be reset to reduce the influence of external light sources on the detection each time it is used.
有油烟之后，透过油烟的红外线信号会变弱，油烟浓度越高，透过油烟的红外线信号就越弱，此时每次检测时间点的第一红外线接收器7接收的红外线信号检测值为T1，而油烟浓度越高，反射红外线的信号会变强，此时每次检测时间点的第二红外线接收器8接收的红外线信号检测值为F1。After there is oil fume, the infrared signal passing through the oil fume will become weaker. The higher the concentration of oil fume, the weaker the infrared signal passing through the oil fume. At this time, the detection value of the infrared signal received by the first infrared receiver 7 at each detection time point is T1, and the higher the oil fume concentration, the stronger the reflected infrared signal. At this time, the detection value of the infrared signal received by the second infrared receiver 8 at each detection time point is F1.
则每次检测时间点上，第一红外线接收器7和第二红外线接收器8检测的变化差值分别为：Then at each detection time point, the variation difference detected by the first infrared receiver 7 and the second infrared receiver 8 is respectively:
CT＝T0–T1式(1)CT = T0 - T1 formula (1)
CF＝F1–F0式(2)CF＝F1-F0 formula (2)
将两个变化差值相加，得出总差值C为：Adding the two variation differences yields the total difference C as:
C＝CT+CF＝(T0–T1)+(F1–F0)式(3)C=CT+CF=(T0-T1)+(F1-F0) formula (3)
由式(3)可以看出，总差值C可直接反映出油烟的有无，并且总差值C的数值增加或减小，则可表明油烟浓度的大小，利用总差值C与标准差值进行比较，进而根据油烟的有无和浓度控制风机3的转速。当计算得出的总差值大于0时，判断有油烟，即启动风机，且根据总差值C的不同，控制风机3不同的转速；当计算得出的总差值等于0时，判断无油烟或油烟已清除干净，即关闭风机。It can be seen from formula (3) that the total difference C can directly reflect the presence or absence of soot, and the increase or decrease of the value of the total difference C can indicate the concentration of soot. Using the total difference C and the standard deviation Values are compared, and then the speed of fan 3 is controlled according to the presence and concentration of oil fumes. When the calculated total difference is greater than 0, it is judged that there is oil fume, that is, the fan is started, and the different speeds of the fan 3 are controlled according to the difference in the total difference C; when the calculated total difference is equal to 0, it is judged that there is no The oil fume or oil fume has been removed, that is, turn off the fan.
另外，由式(3)可以看出，油烟有无变化与环境光线变化等无关，最大可能的去除了干扰因素的存在，提高油烟浓度的检测精度，也更加精确地控制油烟机的工作状态，不会存在抽不净或者油烟机空转的情况，实现节能环保。In addition, it can be seen from formula (3) that the change of the oil fume has nothing to do with the change of ambient light, etc., and the existence of interference factors is eliminated to the greatest extent possible, the detection accuracy of the oil smoke concentration is improved, and the working state of the range hood is controlled more accurately. There will be no dirty exhaust or idling of the range hood, and energy saving and environmental protection will be achieved.
为了简化控制方法，本实施例中，将标准差值分为多个区间范围，分别为0、0-A1、A1-A2、……An-1-An，对应的将风机转速分为多个不同的档位，分别为停机档、1档、2档、……、N档。如，可以将标准差值分为四个区间范围，分别为0、0-A1、A1-A2、A2-A3，风机转速对应为四个档位，分别为停机档、低档、中档和高档。In order to simplify the control method, in this embodiment, the standard deviation value is divided into multiple ranges, which are respectively 0, 0-A 1 , A 1 -A 2 , ... A n-1 -A n , and the corresponding fan The speed is divided into several different gears, which are stop gear, 1st gear, 2nd gear, ..., N gear. For example, the standard deviation can be divided into four ranges, which are 0, 0-A 1 , A 1 -A 2 , A 2 -A 3 , and the fan speed corresponds to four gears, which are stop gear, low gear , mid-range and high-end.
由于第一红外线接收器7和第二红外线接收器8连续地将接收到的红外线信号发送给控制装置2，控制装置2可以采用两种方式：一是，控制装置2通过上述方法连续实时计算总差值C，将每个实际算出的总差值C与标准差值进行比较，通过判断总差值C位于标准差值的某一区间，进而得出风机3对应的转速，由控制装置2控制风机3按得出的转速运转；二是，控制装置每隔一固定周期作为一个时间检测点将实际检测的红外线信号进行计算得出总差值C，再将计算得到的总差值C与标准差值进行比较，最终由控制装置2调节风机3的转速。本实施例中，可以选择每隔3-30秒计算和比较一次，为了控制更为精确，可优选每隔3-10秒计算和比较一次。Since the first infrared receiver 7 and the second infrared receiver 8 continuously send the received infrared signals to the control device 2, the control device 2 can adopt two methods: one is that the control device 2 continuously calculates the total in real time by the above method Difference C, compare each actual calculated total difference C with the standard deviation value, and judge that the total difference C is located in a certain interval of the standard deviation value, and then obtain the corresponding speed of the fan 3, which is controlled by the control device 2 The fan 3 runs according to the obtained speed; the second is that the control device calculates the actual detected infrared signal every other fixed period as a time detection point to obtain the total difference C, and then compares the calculated total difference C with the standard The differences are compared, and finally the speed of the fan 3 is adjusted by the control device 2 . In this embodiment, the calculation and comparison can be selected every 3-30 seconds, and for more precise control, it is preferable to calculate and compare every 3-10 seconds.
如图4所示，下面详细描述油烟机的控制方法，具体包括如下步骤：As shown in Figure 4, the control method of the range hood is described in detail below, which specifically includes the following steps:
(1)上电。(1) Power on.
(2)红外线发射器6连续向外发射红外线信号，第一红外线接收器7和第二红外线接收器8连续接收红外线信号，由于此时处于无油烟状态，第一红外线接收器7接收的红外线信号检测值T0和第二红外线接收器8接收的红外线信号的检测值F0被存储至控制装置2的数据处理单元12中，作为计算变化差值的基准。(2) Infrared ray transmitter 6 continuously emits infrared ray signals outward, and the first infrared ray receiver 7 and the second infrared ray receiver 8 continuously receive infrared ray signals. The detection value T0 and the detection value F0 of the infrared signal received by the second infrared receiver 8 are stored in the data processing unit 12 of the control device 2 as a reference for calculating the variation difference.
(3)控制装置2的数据处理单元12每隔3秒作为一个检测时间点，将接收的第一红外线接收器7的信号和第二红外线接收器8的信号变化值进行计算，得出此个检测时间点的总差值C，与预先存储的标准差值进行比较。(3) The data processing unit 12 of the control device 2 is used as a detection time point every 3 seconds, calculates the signal change value of the received first infrared receiver 7 and the second infrared receiver 8, and draws this The total difference C at the detection time point is compared with the pre-stored standard deviation value.
(4)当计算得出的总差值C等于0时，由于此时总差值C处于标准差值的“0“区间内，判断无油烟，控制装置2控制风机3保持停机状态。(4) When the calculated total difference C is equal to 0, since the total difference C is in the "0" interval of the standard deviation, it is judged that there is no oil fume, and the control device 2 controls the blower 3 to keep shutting down.
(5)当计算得出的总差值C大于0时，判断有油烟，控制装置2控制风机3启动，此时总差值C处于标准差值的0-A1范围内，则控制风机3以低档速运转。(5) When the calculated total difference C is greater than 0, it is judged that there is soot, and the control device 2 controls the fan 3 to start. Run at low speed.
(6)继续每隔3秒计算一次总差值C，再与标准差值进行比较，判断总差值C位于标准差值的某一区间，进而得出风机3对应的转速，由控制装置2控制风机3按得出的转速运转，随着油烟浓度的增加，总差值C越大，风机3转速由低档向中档和高档逐级增加。(6) Continue to calculate the total difference C every 3 seconds, and then compare it with the standard deviation value, judge that the total difference C is in a certain interval of the standard deviation value, and then obtain the corresponding speed of the fan 3, which is determined by the control device 2 Control the blower 3 to run at the obtained speed. With the increase of the oil fume concentration, the greater the total difference C is, the speed of the blower 3 increases step by step from low gear to middle gear and high gear.
(7)当炒菜结束后，风机3继续运转，将剩余的油烟继续吸走，随着油烟浓度的降低，总差值C减小，风机3转速由高档向中档和低档逐级降低。(7) When the cooking is finished, the blower 3 continues to run to suck away the remaining oil fume. As the concentration of oil fume decreases, the total difference C decreases, and the speed of the blower 3 decreases step by step from high to middle and low.
(8)当计算得出的总差值C等于0时，判断油烟已清除干净，控制装置2控制风机3停机。(8) When the calculated total difference C is equal to 0, it is judged that the soot has been removed, and the control device 2 controls the fan 3 to stop.
如上所述，结合附图所给出的方案内容，可以衍生出类似的技术方案。但凡是未脱离本发明技术方案的内容，依据本发明的技术实质对以上实施例所作的任何简单修改、等同变化与修饰，均仍属于本发明技术方案的范围内。As mentioned above, a similar technical solution can be derived in combination with the content of the solution given in the accompanying drawings. However, any simple modifications, equivalent changes and modifications made to the above embodiments according to the technical essence of the present invention are still within the scope of the technical solutions of the present invention.
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Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105650705A (en) * | 2016-02-26 | 2016-06-08 | 广东万和新电气股份有限公司 | Single-key-control range hood and control method thereof |
| CN107062332A (en) * | 2017-04-12 | 2017-08-18 | 顾林鹏 | A kind of lampblack absorber autocontrol method based on capacitance type sensor |
| CN107131531A (en) * | 2017-05-12 | 2017-09-05 | 宁波方太厨具有限公司 | A kind of range hood and its control method |
| CN107620991A (en) * | 2017-08-10 | 2018-01-23 | 深圳益创信息科技有限公司 | A kind of intelligent smoke pumping method and smoke exhaust ventilator |
| CN108266870A (en) * | 2018-01-15 | 2018-07-10 | 广东美的暖通设备有限公司 | Fresh air control device, method, system, computer equipment and storage medium |
| DE102018007504A1 (en) | 2017-09-27 | 2019-03-28 | Diehl Ako Stiftung & Co. Kg | Vapor detector for a cooker hood and extractor hood |
| CN110208184A (en) * | 2018-07-26 | 2019-09-06 | 华帝股份有限公司 | Oil smoke concentration detection device and range hood |
| CN110220862A (en) * | 2018-11-20 | 2019-09-10 | 华帝股份有限公司 | Infrared array detection device for detecting oil smoke and detection method thereof |
| CN110361311A (en) * | 2019-07-30 | 2019-10-22 | 蓝天白云清洁服务有限公司 | A kind of oil smoke concentration detection sensor and detection method |
| CN110425616A (en) * | 2019-07-31 | 2019-11-08 | 宁波方太厨具有限公司 | A kind of range hood and its control method |
| CN111044473A (en) * | 2019-12-11 | 2020-04-21 | 华帝股份有限公司 | Oil smoke concentration detection method of oil smoke detection device and range hood |
| CN112228934A (en) * | 2020-10-22 | 2021-01-15 | 密波锋 | Intelligent control system and method for pumping and exhausting oil smoke |
| CN112833429A (en) * | 2021-03-08 | 2021-05-25 | 谢卫国 | Intelligent guidance efficient kitchen stove control method and device and intelligent kitchen |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201265900Y (en) * | 2008-06-11 | 2009-07-01 | 黄克方 | Control system of cooking fume exhauster |
| CN202018069U (en) * | 2010-12-31 | 2011-10-26 | 海尔集团公司 | Range hood and gas stove linkage system |
| CN202153021U (en) * | 2011-06-20 | 2012-02-29 | 海尔集团公司 | range hood |
| CN202350144U (en) * | 2011-11-21 | 2012-07-25 | 浙江苏泊尔家电制造有限公司 | Range hood with wind power automatic regulating device |
| JP2014037939A (en) * | 2012-08-20 | 2014-02-27 | Harman Co Ltd | Heating cooker |
| CN204006210U (en) * | 2014-06-30 | 2014-12-10 | 青岛海尔洗碗机有限公司 | A kind of lampblack absorber |
-
2014
- 2014-06-30 CN CN201410306416.6A patent/CN105299715B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201265900Y (en) * | 2008-06-11 | 2009-07-01 | 黄克方 | Control system of cooking fume exhauster |
| CN202018069U (en) * | 2010-12-31 | 2011-10-26 | 海尔集团公司 | Range hood and gas stove linkage system |
| CN202153021U (en) * | 2011-06-20 | 2012-02-29 | 海尔集团公司 | range hood |
| CN202350144U (en) * | 2011-11-21 | 2012-07-25 | 浙江苏泊尔家电制造有限公司 | Range hood with wind power automatic regulating device |
| JP2014037939A (en) * | 2012-08-20 | 2014-02-27 | Harman Co Ltd | Heating cooker |
| CN204006210U (en) * | 2014-06-30 | 2014-12-10 | 青岛海尔洗碗机有限公司 | A kind of lampblack absorber |
Cited By (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105650705A (en) * | 2016-02-26 | 2016-06-08 | 广东万和新电气股份有限公司 | Single-key-control range hood and control method thereof |
| CN105650705B (en) * | 2016-02-26 | 2018-03-27 | 广东万和新电气股份有限公司 | Singly-bound controls smoke exhaust ventilator and its control method |
| CN107062332A (en) * | 2017-04-12 | 2017-08-18 | 顾林鹏 | A kind of lampblack absorber autocontrol method based on capacitance type sensor |
| CN107131531A (en) * | 2017-05-12 | 2017-09-05 | 宁波方太厨具有限公司 | A kind of range hood and its control method |
| CN107131531B (en) * | 2017-05-12 | 2023-05-26 | 宁波方太厨具有限公司 | Range hood and control method thereof |
| CN107620991A (en) * | 2017-08-10 | 2018-01-23 | 深圳益创信息科技有限公司 | A kind of intelligent smoke pumping method and smoke exhaust ventilator |
| DE102018007504B4 (en) | 2017-09-27 | 2020-07-09 | Diehl Ako Stiftung & Co. Kg | Vapor detection device for an extractor hood and extractor hood |
| DE102018007504A1 (en) | 2017-09-27 | 2019-03-28 | Diehl Ako Stiftung & Co. Kg | Vapor detector for a cooker hood and extractor hood |
| CN108266870A (en) * | 2018-01-15 | 2018-07-10 | 广东美的暖通设备有限公司 | Fresh air control device, method, system, computer equipment and storage medium |
| CN110208184A (en) * | 2018-07-26 | 2019-09-06 | 华帝股份有限公司 | Oil smoke concentration detection device and range hood |
| CN110220862A (en) * | 2018-11-20 | 2019-09-10 | 华帝股份有限公司 | Infrared array detection device for detecting oil smoke and detection method thereof |
| CN110361311A (en) * | 2019-07-30 | 2019-10-22 | 蓝天白云清洁服务有限公司 | A kind of oil smoke concentration detection sensor and detection method |
| CN110425616A (en) * | 2019-07-31 | 2019-11-08 | 宁波方太厨具有限公司 | A kind of range hood and its control method |
| CN111044473A (en) * | 2019-12-11 | 2020-04-21 | 华帝股份有限公司 | Oil smoke concentration detection method of oil smoke detection device and range hood |
| CN112228934A (en) * | 2020-10-22 | 2021-01-15 | 密波锋 | Intelligent control system and method for pumping and exhausting oil smoke |
| CN112833429A (en) * | 2021-03-08 | 2021-05-25 | 谢卫国 | Intelligent guidance efficient kitchen stove control method and device and intelligent kitchen |
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| CN105299715B (en) | 2017-10-13 |
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