JPH05111450A - Vacuum cleaner - Google Patents

Abstract

(57) [Abstract] [Purpose] To provide an electric vacuum cleaner that can finely determine the suction force of an electric blower that suits the amount of dust on the floor surface and the operating force of the operating unit at hand, and can perform cleaning with optimal and comfortable suction force. .. [Structure] Electric blower 1 for sucking in dust, dust amount detecting means 12 for detecting the amount of dust on the floor surface, operating force detecting means 16 for detecting the operating force of a hand operation unit, and dust amount detecting means 12 and A fuzzy inference device 17 for inputting the output of the operating force detection device 16 is provided. The fuzzy inference device 17 determines the suction force of the electric blower 1 by performing fuzzy inference based on the outputs of the dust amount detection device 12 and the operation force detection device 16. , The fine suction power of the electric blower is determined by the amount of dust and the operating force of the operation unit at hand.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electric vacuum cleaner which detects dust on a floor surface and automatically adjusts the suction force, and at the same time, adjusts the suction force by the operation force of a hand operation unit.

[0002]

2. Description of the Related Art A conventional electric vacuum cleaner of this type is disclosed in Japanese Unexamined Patent Application Publication No. Hei 2
It was configured as shown in Japanese Patent Publication No.-268718. The configuration will be described below with reference to FIG.

As shown in the figure, a hose 3 is connected to a cleaner body 2 having a built-in electric blower 1, and a floor nozzle 5 is connected to the tip of an extension pipe 4 connected to the hose 3. The floor nozzle 5 is provided with a pressure detecting means (not shown) for detecting the suction pressure, and the output of this pressure detecting means is used to identify the quality of the floor surface, for example, whether it is a carpet or not.
In the case of cleaning, the operation portion 6 at the hand is grasped and operated. Further, in recent years, an increasing number of electric vacuum cleaners have a control function based on the amount of waste.

[0004]

In such a conventional vacuum cleaner, while the control function by electronic control is added, the maximum suction work rate is increased, and the vacuum cleaner main body 2 holding the hand operation portion 6 is used. However, the floor nozzle 5 often sticks to the floor and requires a considerable amount of force for the user to operate, and the operation is heavy.

The present invention is intended to solve the above problems, and an object thereof is to provide an electric vacuum cleaner which controls the suction force of an electric blower according to the amount of dust and is easy to use and easy to operate.

[0006]

In order to achieve the above-mentioned object, the present invention has an electric blower for sucking in dust, a dust amount detecting means for detecting the amount of dust on the floor surface, and an operating force of a hand operation section. And a fuzzy inference device for inputting the outputs of the dust amount detecting device and the operation force detecting device, wherein the fuzzy inference device outputs the output of the dust amount detecting device and the operation force detecting device. The problem solving means is to determine the suction force of the electric blower.

[0007]

According to the present invention, by the above-mentioned means for solving the problems, the maximum suction force is obtained when the amount of dust is large when the operator is grasping the operating portion at hand, and the floor nozzle is attracted to the floor surface to move. When it disappears, the user tries to move the floor nozzle by firmly grasping and pushing the hand operation section, so the force applied to the hand operation section is detected by the operation force detection means and the floor nozzle is moved. The suction force of the electric blower can be reduced to a level where it can be smoothly operated, and operability can be improved.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to FIGS. The same components as those in the conventional example are designated by the same reference numerals and the description thereof will be omitted.

As shown in the figure, the dust sensor 7 is provided in the hand operation part, the light emitting part 8 and the light receiving part 9 are installed so as to face each other, and the sucked dust must pass between them. is doing. The signal of the light receiving unit 9 is amplified by the amplifying unit 10, the waveform is shaped by the pulse converting unit 11, and the signal is input to the dust amount detecting unit 12. The dust amount detection means 12 detects the dust amount by calculating the integrated amount of the sucked dust for a predetermined time. The pressure sensor 13 is provided in the hand operation part, and the lines are arranged vertically and horizontally inside, and the resistance decreases when the lines hit each other, and the resistance decreases when the lines hit hard. .. The signal of the pressure sensor 13 is amplified by the amplifier 14, and the pulse converter 15 shapes the waveform.
It is input to the operating force detection means 16. Operating force detection means 16
Detects the operation force when the user grasps and operates the hand operation unit from the output of the pressure sensor 13. The fuzzy reasoner 17
Fuzzy inference is performed based on the outputs of the dust amount detection means 12 and the operation force detection means 16 to determine the suction force of the electric blower 1. The control means 18 controls the suction force of the electric blower 1 by the output of the fuzzy inference device 17.

The fuzzy inference unit 17 is constructed as shown in FIG. 2, and the antecedent part membership function storage means 19 is provided.
Stores a membership function relating to the amount of waste and operating force. The amount of dust adaptability calculating means 20 and the operating force adaptability calculating means 21 are respectively the amount of dust stored in the membership function storage means 19 of the antecedent part, the membership function relating to the operating force, and the amount of dust as input and the operating force. Compute the goodness of fit with. The antecedent part minimum calculating means 22 takes the MINs of the two adaptability outputs from the dust amount adaptability calculating means 20 and the operating force adaptability calculating means 21 and makes the conclusion of the antecedent part. The suction force inference rule storage unit 23 stores the inference rule regarding the suction force. The suction force membership function storage means 24 stores the membership function relating to the suction force of the consequent part. The consequent part minimum calculation means 25 is the suction force inference rule storage means 23.
In accordance with the inference rule stored in, the conclusion of the rule is obtained by taking the MIN of the antecedent part conclusion and the aspiration force membership function of the consequent part stored in the suction force membership function storage means 24. The center-of-gravity means 26 finally obtains the suction force by obtaining the respective conclusions for all the rules, taking the MAX of all the conclusions, and calculating the center of gravity thereof.

The operation of the above structure will be described. The light emitted from the light emitting portion 8 of the dust sensor 7 can be received by the light receiving portion 9 when there is no dust, but is blocked when the dust passes, so the light receiving portion is blocked. I can't receive light at 9. Therefore, the presence or absence of dust can be determined from the output of the light receiving unit 9. In the dust amount detection means 12, the amount of dust on the floor surface at that time is detected by integrating the signals amplified by the amplification section 10 and waveform-shaped by the pulse conversion means 11 for a fixed time (for example, 0.1 seconds). it can. The resistance of the pressure sensor 13 changes according to the force of gripping and operating the operating portion at hand, the signal of the pressure sensor 13 is amplified by the amplifying portion 14, the pulse converting means 15 shapes the waveform, and the operating force detecting means 16 It is possible to detect the operating force of the hand operation unit.

The optimum suction force for cleaning is determined by the amount of dust on the floor surface and the operating force of the operating portion at hand, and the fuzzy reasoner 17 is output from the output values of the dust amount detecting means 12 and the operating force detecting means 16. Then, the fuzzy inference is performed and the control means 18 controls the suction force of the electric blower 1 based on the result.

Next, the process of inferring the suction force will be described. The inference rule of the fuzzy inference according to the present embodiment is formed on the basis of a general judgment such as "if the amount of dust is large and the operation force is small, the suction force is set to be very large". Qualitative concepts such as "large amount of waste", "small operation force", and "large suction force" are quantified by membership functions as shown in Fig. 3 (a), (b), (c). Is expressed as The waste amount suitability calculating means 20 obtains the suitability with respect to the input of the waste amount detecting means 12 and the membership function of the waste amount stored in the antecedent part membership function storage means 19. Similarly, the operating force adaptability calculating means 21 obtains the adaptability with respect to the input from the operating force detecting means 16 and the membership function of the operating force stored in the antecedent part membership function storing means 19.

The antecedent part minimum computing means 22 takes the MINs of these conformances and concludes the antecedent part. In the consequent part minimum calculating means 25, according to the rules stored in the suction force inference rule storage means 18 (Table 1), the antecedent part conclusion and the suction force membership function storage means 24 are stored. The MIN of the suction force membership function of the subject part is taken to conclude the rule.

[0015]

[Table 1]

After obtaining the respective conclusions for all the rules, the centroid calculating means 26 takes the MAX of all the conclusions and calculates the centroids to finally obtain the suction force. The control unit 18 calculates and controls the phase control amount of the electric blower 1 based on the determined suction force.

As described above, according to the electric vacuum cleaner of this embodiment, fuzzy inference is performed from the outputs of the dust amount detecting means 12 and the operating force detecting means 16 to determine the suction force of the electric blower 1. A fine suction force of the electric blower 1 can be determined, an optimal and comfortable suction force can be used for cleaning, and an electric vacuum cleaner with a very comfortable operation can be provided.

[0018]

As is apparent from the above embodiments, according to the present invention, the electric blower for sucking in dust, the dust amount detecting means for detecting the amount of dust on the floor, and the operating force of the hand operation unit are provided. The operating force detecting means for detecting, and a fuzzy inference device for inputting the output of the dust amount detecting means and the operating force detecting means, the fuzzy inference device, the fuzzy inference device based on the output of the dust amount detecting means Since the suction force of the electric blower is determined, the suction force of the electric blower can be controlled according to the amount of dust, and the suction force of the electric blower can be controlled by the operating force of the hand control unit. It is possible to provide an electric vacuum cleaner that can determine the suction force, eliminates the need to repeatedly press the position button of the hand operation unit, and has a very comfortable operation feeling.

[Brief description of drawings]

FIG. 1 is a block diagram of an electric vacuum cleaner according to an embodiment of the present invention.

FIG. 2 is a block diagram of a fuzzy reasoner of the electric vacuum cleaner.

3A to 3C are diagrams showing membership functions of a fuzzy reasoner of the same vacuum cleaner.

FIG. 4 is a perspective view of a conventional vacuum cleaner.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Electric blower 12 Waste amount detection means 16 Operating force detection means 17 Fuzzy reasoner

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Kazuma Suo 1006 Kadoma, Kadoma City, Osaka Prefecture Matsushita Electric Industrial Co., Ltd.

Claims (1)

[Claims] 1. An electric blower for sucking in dust, a dust amount detecting means for detecting a dust amount on a floor surface, an operating force detecting means for detecting an operating force of a hand operation unit, the dust amount detecting means and an operation. A fuzzy reasoner for inputting the output of the force detection means, wherein the fuzzy reasoner determines the suction force of the electric blower from the outputs of the dust amount detection means and the operation force detection means.