TWI483704B - Self - propelled cleaning equipment - Dust detection method and device - Google Patents

Description

Self-propelled cleaning device dust detecting method and device

The present invention relates to a self-propelled cleaning device, and more particularly to a dust detecting method and apparatus for a self-propelled cleaning device that performs cleaning operations with autonomous displacement.

Due to the busy work of modern people, it is a laborious and time-consuming work for house cleaning. In order to solve such problems, the so-called self-propelled cleaning equipment products appear on the market, and can be automatically grounded by the control of artificial intelligence. It is cleaned and dusted back and forth to achieve the convenience of no human operation.

The self-propelled cleaning device will be equipped with a dust box inside the body to collect dust. In addition to the opening for dumping the dust, the dust box has two openings, and an opening connects the dust flow path to the bottom of the body. The dust suction port and the other opening communicate with the negative pressure device to generate suction force for the dust suction port connected with the dust box; in order to improve the cleaning effect, a part of the main dust brush is provided at the body dust suction port. Or set a side sweeping brush on both sides of the body, in conjunction with the movement of the self-propelled cleaning device, the side sweeping brush will sweep the main sweeping brush on the moving path or the dust outside the dust suction port of the ground, and then pass the main sweeping brush or dirty The dust suction port sucks and stores the dust into the dust box of the machine body, but since the dust box of the conventional self-propelled cleaning device is disposed inside the body, the user cannot directly judge the current dust box directly with the naked eye. The amount of dust collected will cause the user to check the amount of dust collected in the dust box inside the body after a period of time to ensure that the self-propelled cleaning device can continue to operate effectively. The user needs to continuously take the initiative to check the dust box, and cannot passively wait until the dust box of the dust box is full and then clean it, which is quite inconvenient for the user, and if the self-propelled cleaning device moves to a certain Especially in the dusty environment, the dust collection of the dust box is increased in a short period of time, and the user has not yet detected the situation. Excessive dust in the dust box causes the negative pressure device to increase its operating power. It causes unnecessary consumption of electric energy, and the dust may overflow from the dust box along the dust flow path. As the movement of the self-propelled cleaning equipment is scattered everywhere, the second floor is formed on the cleaned ground, so there is pollution. The dust flow channel is designed with an infrared sensor to infiltrate the dust through infrared rays. The main purpose is to provide a pair of infrared signal components on both sides of the dirt flow path, one for emitting infrared rays and the other for sensing infrared rays. The transparent signal component is provided on the infrared signal component to protect the infrared radiation from receiving and receiving. When the dust flow path has dirt, the infrared sensing between the two infrared signal components is affected. The disturbance is weakened. As the amount of dust increases, the infrared signal received by the sensing element decreases. By calculating the strength of the infrared signal, the amount of dust collected by the dust box can be judged, and the current cleaning environment can be judged. The amount of dust.

Since the self-propelled cleaning equipment is mainly used for cleaning dust, it is inevitable that dust will adhere to the light-transmitting components. When the dust on the light-emitting components accumulates to a certain amount, the induction of the infrared signal will be affected, and the self-propelled cleaning device will be misjudged. The dust box is full or cleaned in a particularly dusty environment, and the incorrect control is performed; and the infrared light is easily affected by ambient light, and the stability is insufficient; on the other hand, the infrared light is continuously transmitted and received for a long time. A lot of consumption is generated for electric energy.

Therefore, an object of the present invention is to provide a self-propelled cleaning device dust detecting method that is not affected by dirt.

Another object of the present invention is to provide a self-propelled cleaning device dust detecting device that is free from dust.

A method for detecting a dust of a self-propelled cleaning device according to the present invention includes: providing a capacitance sensing unit in a sensing area of a self-propelled cleaning device body for dust to pass therethrough; and making the capacitance sensing unit electrically A control unit is connected, and the capacitance sensing unit senses the capacitance value of the sensing area of the body, so that the control unit compares the capacitance value of the sensing area with a preset capacitance value, and outputs a control signal.

A self-propelled cleaning device dust detecting device according to another object of the present invention comprises: a sensing area disposed on a body of a self-propelled cleaning device, which is a space through which dirt can pass; a sense of capacitance a measuring unit, configured to sense a capacitance value of the sensing region; a control unit electrically coupled to the capacitive sensing unit for comparing a capacitance value of the sensing region with a predetermined capacitance Value and output a control signal.

The method and device of the embodiment of the present invention sense the capacitance of the capacitive sensing unit by sensing the dielectric constant between the two sensing elements of the capacitive sensing unit and the sensing elements that are changed in accordance with the increase or decrease of the amount of dust. Different capacitance values are measured, and the measured capacitance value is compared with a preset capacitance value through the control unit. On the one hand, the dust collection amount of the dust collection mechanism can be known, and on the other hand, the current cleaning can be judged. The amount of environmental dust is small, and the capacitance sensing unit is different from infrared sensing. It does not affect the capacitance value due to the adhesion of dirt to a surface, and is relatively energy-saving and free from ambient light.

1‧‧‧ body

11‧‧‧First sensing area

12‧‧‧Upper cover

13‧‧‧ 容容

14‧‧‧ openings

15‧‧‧dust suction

151‧‧‧dust flow path

16‧‧‧Second sensing area

2‧‧‧Drive mechanism

21‧‧‧Drive wheel

3‧‧‧ Cleaning institutions

31‧‧‧Main sweeper

32‧‧‧ side sweeping brush

4‧‧‧dust collection mechanism

41‧‧‧Box

42‧‧‧ lid

43‧‧‧Into the dust inlet

44‧‧‧Negative pressure outlet

45‧‧‧ lattice filter

46‧‧‧ visor

47‧‧‧ pivot

5‧‧‧Negative pressure mechanism

51‧‧‧Motor

52‧‧‧fan

53‧‧‧Negative pressure guide

54‧‧‧ Negative pressure inlet

6‧‧‧Control unit

7‧‧‧First Capacitance Sensing Unit

71‧‧‧First sensing element

72‧‧‧First sensing element

8‧‧‧Second capacitive sensing unit

81‧‧‧Second sensing element

82‧‧‧Second sensing element

The first figure is a schematic view of the body of the self-propelled cleaning device of the embodiment of the present invention.

The second figure is a schematic diagram of the configuration of the first capacitive sensing unit in the embodiment of the present invention.

The third figure is a schematic diagram of the dust accumulation sensing area of the embodiment of the present invention.

The fourth figure is a schematic diagram of a configuration of a second capacitive sensing unit according to another embodiment of the present invention.

Referring to the first and second figures, the embodiment of the present invention can utilize the body 1 of the self-propelled cleaning device as shown in the figure, and the device 1 includes: The driving mechanism 2 for driving the body 1 to be displaced by the driving wheels 21 on both sides of the body 1 can be provided with the main brush 31 and the side sweeping brush 32 of the bristles or one of the dust suction ports 15 a cleaning mechanism 3 for performing a floor cleaning operation, a dust collecting mechanism 4 capable of collecting the dust cleaned by the cleaning mechanism 3, a negative pressure mechanism 5 capable of drawing air inside the dust collecting mechanism 4 to form a negative pressure state therein, and executable items The data is calculated or judged to perform the control unit 6 for controlling various functions on the body 1.

The first capacitive sensing unit 7 is electrically connected to the control unit 6 for sensing the capacitance value in the first sensing region 11. The first capacitive sensing unit 7 includes an appropriate spacing. Two first sensing elements 71, 72 disposed on two sides of the first sensing area 11, the first sensing area 11 is a space through which dirt can pass; the top of the body 1 has a movable upper cover 12 and a groove 13 is formed in the bottom of the upper cover 12, and an opening 14 is formed. The bottom of the body 1 below the cavity 13 is provided with a dust suction port 15; the dust collecting mechanism 4 is disposed in the cavity 13, including a box. The body 41 has a cover 42 at the upper portion thereof, and a dust inlet 43 at the bottom. The dust inlet 43 communicates with the first sensing area 11 to form a space for dust to pass through, and is disposed on the side wall thereof. A negative pressure outlet 44 is provided. On the negative pressure air flow path formed between the dust inlet 43 and the negative pressure outlet 44, a lattice screen 45 is provided which stands upright and abuts against the negative pressure outlet 44.

The dust suction port 15 is tapered toward the dust inlet 43 to form a dust flow path 151 for the dust to flow into the dust collecting mechanism 4, and the dust inlet 43 is located at the dust collecting mechanism 4. The inner end is covered by a thin shutter 46. The shutter 46 is pivotally disposed on the bottom side of the dust inlet 43 and can be floated by the flow of the negative pressure airflow. The dust inlet 43 communicates with the inside of the dust collecting mechanism 4, and falls to block the dust inlet 43 from communicating with the inside of the dust collecting mechanism 4 when the negative pressure airflow stops flowing.

The negative pressure mechanism 5 is driven by the motor 51 to drive the fan 52 to discharge air to generate a negative pressure, which will cause the negative pressure guiding channel 53 to attract air from the negative pressure inlet 54 and the dust collecting box 4 to be placed in the cavity of the body 1. 13 its negative pressure outlet 44 is connected to the negative pressure inlet 54 so that air can flow therethrough.

In the implementation of the present invention, when the dust in the dust collecting mechanism 4 is collected to a certain amount, the negative pressure mechanism 5 continues to operate, please refer to the third figure, and the dust will stay in the dust flow path. The sensing area 11 of the 151 is gathered in the sensing area 11; the first sensing elements 71 and 72 are parallel to each other by the first capacitive sensing unit 7 on both sides of the sensing area 11, and when the amount of dust increases, the first feeling The dielectric coefficient in the measurement area 11 is also increased at the same time, so that the capacitance value measured by the capacitance sensing unit 7 is increased, and the control unit 6 compares the measured capacitance value with a preset value, such as higher than the preset value. Then, the control signal is output to the user 1 to send a warning message to the user or temporarily stop the operation of the cleaning mechanism 3 and the negative pressure mechanism 5; or, by using the amount of dust passing through the first sensing area 11, the first capacitive sensing unit The measured capacitance value is compared with a preset value via the control unit 6, and the control signal is output to the cleaning mechanism 3 and the negative pressure mechanism 5 for the amount of capacitance value, and the operating power is adjusted.

The method and the device of the embodiment of the present invention are mainly caused by the first sensing elements 71 and 72 disposed in parallel with the first capacitive sensing unit 7 for sensing the change between the amount of dust and the amount of dust. The dielectric coefficient of the first capacitive sensing unit 7 senses different capacitance values, and the measured capacitance value is compared with a pre-control unit 6 The capacitance value is compared for comparison. On the one hand, the dust collection amount of the dust collecting mechanism 4 can be known, and on the other hand, the amount of dust in the current cleaning environment can be judged, and the capacitance sensing unit 7 is different from the infrared sensing, It will affect the capacitance value due to the adhesion of dirt to a surface, and it is also energy-saving and is not affected by ambient light.

Referring to the fourth embodiment, in another embodiment of the present invention, the second sensing elements 81 and 82 of the second capacitive sensing unit 8 may also be disposed adjacent to the two sides of the box body 41 of the dust collecting mechanism 4, The capacitance value of the second sensing area 16 in which the dust is collected in the dust collecting mechanism 4 is sensed, and the measured capacitance value is compared with a preset value via the control unit 6, and if it is higher than the preset value, the output is output. The control signal sends a warning message to the user 1 or temporarily stops the operation of the cleaning mechanism 3 and the negative pressure mechanism 5.

The above is only the preferred embodiment of the present invention, and the scope of the invention is not limited thereto, that is, the simple equivalent changes and modifications made by the scope of the invention and the description of the invention are All remain within the scope of the invention patent.

1‧‧‧ body

11‧‧‧First sensing area

12‧‧‧Upper cover

13‧‧‧ 容容

14‧‧‧ openings

15‧‧‧dust suction

151‧‧‧dust flow path

4‧‧‧dust collection mechanism

41‧‧‧Box

42‧‧‧ lid

43‧‧‧Into the dust inlet

44‧‧‧Negative pressure outlet

45‧‧‧ lattice filter

46‧‧‧ visor

47‧‧‧ pivot

5‧‧‧Negative pressure mechanism

51‧‧‧Motor

52‧‧‧fan

53‧‧‧Negative pressure guide

54‧‧‧ Negative pressure inlet

6‧‧‧Control unit

7‧‧‧First Capacitance Sensing Unit

71‧‧‧First sensing element

72‧‧‧First sensing element

Claims (10)

A self-propelled cleaning device dust detecting method comprises: a capacitive sensing unit is disposed in a sensing area of a self-propelled cleaning device body for dust to pass therethrough; and the capacitive sensing unit is electrically connected to a control unit The capacitance sensing unit senses the capacitance value of the sensing region of the body, so that the control unit compares the capacitance value of the sensing region with a preset capacitance value, and outputs a control signal. The self-propelled cleaning device dust detecting method according to claim 1, wherein the control signal is used to automatically send a warning message to the user. The self-propelled cleaning device dust detecting method according to claim 1, wherein the control signal is used to adjust the operating power of a negative pressure device. The self-propelled cleaning device dust detecting method according to claim 1, wherein the control signal is used to adjust the operating power of a cleaning mechanism. The self-propelled cleaning device dust detecting device according to claim 1, wherein the capacitance sensing unit comprises two sensing elements disposed at different intervals on the two sides of the sensing area. A self-propelled cleaning device dust detecting device comprises: a sensing area disposed on a body of a self-propelled cleaning device, wherein the dust is passed through a space; a capacitive sensing unit is disposed at the The sensing area is used to sense the capacitance value of the sensing area; a control unit is electrically connected to the capacitance sensing unit for comparing the capacitance value of the sensing area with a preset capacitance value and outputting a control signal . The self-propelled cleaning device dust detecting device according to claim 6, wherein the sensing area is located in a dust collecting mechanism for collecting dust into a dust collecting device. At the runner. The self-propelled cleaning device dust detecting device according to claim 6, wherein the sensing area is located in a dust collecting mechanism for collecting dust. The self-propelled cleaning device dust detecting device according to claim 6, wherein the capacitance sensing unit comprises two sensing elements disposed at different intervals on the two sides of the sensing area. The self-propelled cleaning device dust detecting device according to claim 9, wherein the two sensing elements of the capacitive sensing unit are parallel to each other.