CN-117814704-B - Filter screen life-span detection circuit, filter screen life-span detection device and robot sweeps floor

Abstract

The application belongs to the technical field of sweeping robots, and provides a filter screen life detection circuit, a filter screen life detection device and a sweeping robot, wherein the filter screen life detection circuit is arranged in an air duct, the dust detection circuit is used for detecting the dust concentration in the air duct and generating a dust detection signal, and a main control circuit is used for generating a filter screen replacement signal under the condition that the voltage of the dust detection signal is larger than a first preset threshold value, so that a user knows that the filter screen of the sweeping machine has the service life, the filter screen life is judged by judging the dust concentration in the air duct, the filter screen replacement is reduced, the cost is saved, and the user who forgets to replace the filter screen can be timely informed to replace a new filter screen.

Inventors

• LI WEIYONG

Assignees

• 深圳市优必选科技股份有限公司

Dates

Publication Date

20260508

Application Date

20240123

Claims (8)

1. 1. The utility model provides a filter screen life-span detection circuit, its characterized in that, filter screen life-span detection circuit is used for detecting the life-span of filter screen, the filter screen sets up in the one end in wind channel, filter screen life-span detection circuit includes: The fine dust detection circuit is arranged in the air duct and is used for detecting the concentration of fine dust in the air duct and generating a fine dust detection signal; The main control circuit is connected with the tiny dust detection circuit and is used for receiving the tiny dust detection signal and generating a filter screen replacement signal under the condition that the voltage of the tiny dust detection signal is larger than a first preset threshold value; The air duct is of a Y-shaped structure, the fine dust detection circuit comprises a first fine dust sensor and a second fine dust sensor, the first fine dust sensor and the second fine dust sensor are respectively arranged on two branches of the air duct, the first fine dust sensor generates a first fine dust detection signal, the second fine dust sensor generates a second fine dust detection signal, and the main control circuit judges that the filter screen has reached a service life value under the condition that the voltage of the first fine dust detection signal or the second fine dust detection signal is larger than a first preset threshold value, so as to generate a filter screen replacement signal; The Y-shaped structure is provided with two branch channels, one of the two branch channels is used for arranging a fan, and the other branch channel is used for closing an outlet.
2. 2. The screen life detection circuit of claim 1, wherein the master control circuit is further configured to determine a life detection signal based on the mote detection signal and a preset life relationship table; the filter screen life detection circuit further includes: and the display circuit is connected with the main control circuit and is used for displaying the service life of the filter screen according to the service life detection signal.
3. 3. The filter screen life detection circuit of claim 1, wherein the master control circuit is further configured to generate an early warning control signal if the voltage of the mote detection signal is greater than a second preset threshold; the filter screen life detection circuit further includes: and the early warning circuit is connected with the main control circuit and is used for sending out early warning signals according to the early warning control signals.
4. 4. The filter screen life detection circuit of claim 1, wherein a fan is arranged at the other end of the air duct and is connected with the main control circuit, and the main control circuit is further used for controlling the start of the dust detection circuit and detecting the dust concentration in the air duct when the fan is started.
5. 5. The filter life detection circuit of claim 4, wherein the master control circuit is further configured to continuously receive the mote detection signal for a first preset period of time after the fan is started, obtain a mote concentration curve based on the mote detection signal, and generate a filter replacement signal based on the mote detection signal.
6. 6. The filter life detection circuit of claim 5 wherein the master control circuit is further configured to determine a time integrated value for which the dust concentration is greater than a preset dust concentration threshold based on the dust concentration curve, and to generate the filter replacement signal when a ratio of the time integrated value to the first preset time period is greater than a preset ratio.
7. 7. A filter life detection device, characterized in that the filter life detection device comprises a filter life detection circuit according to any one of claims 1 to 6.
8. 8. The floor sweeping robot is characterized by comprising a filter screen, an air duct, a fan and the filter screen service life detection circuit according to any one of claims 1-6, wherein the filter screen and the fan are respectively arranged at two ends of the air duct, and the dust detection circuit is arranged in the air duct.

Description

Filter screen life-span detection circuit, filter screen life-span detection device and robot sweeps floor Technical Field The application belongs to the technical field of sweeping robots, and particularly relates to a filter screen service life detection circuit, a filter screen service life detection device and a sweeping robot. Background More and more sweeping robots enter home life, and the intelligent degree of the sweeping robots is higher and higher. However, the service time of the dust box filter screen of the current sweeping robot usually refers to a reference value provided by a manufacturer, so that the application scenes of users in using the sweeping robot are different, and the service time is also different. In the current use of sweeping robots, manufacturers generally provide a lower reference value to improve the experience of the sweeping robots, so users need to purchase new filter screens frequently, and the use cost is greatly increased. Meanwhile, some users are not clear that the filter screen needs to be replaced, and the effect of the filter screen is greatly reduced due to the fact that the dust box is always used, so that dust is blown into the air to pollute the environment. Disclosure of Invention In order to solve the technical problems, the embodiment of the application provides a filter screen service life detection circuit, a filter screen service life detection device and a sweeping robot, and aims to solve the problem that a filter screen cannot be flexibly replaced according to specific application working conditions of a sweeping machine due to the fact that the service life of the current filter screen is set to be a fixed reference value. An embodiment of the present application provides a filter screen life detection circuit, where the filter screen life detection circuit is used to detect a life of a filter screen, the filter screen is disposed at one end of an air duct, and the filter screen life detection circuit includes: The fine dust detection circuit is arranged in the air duct and is used for detecting the concentration of fine dust in the air duct and generating a fine dust detection signal; the main control circuit is connected with the tiny dust detection circuit and used for receiving the tiny dust detection signal and generating a filter screen replacement signal under the condition that the voltage of the tiny dust detection signal is larger than a first preset threshold value. In some embodiments, the master control circuit is further configured to determine a lifetime detection signal from the dust detection signal and a preset lifetime relationship table; the filter screen life detection circuit further includes: and the display circuit is connected with the main control circuit and is used for displaying the service life of the filter screen according to the service life detection signal. In some embodiments, the main control circuit is further configured to generate an early warning control signal when the voltage of the dust detection signal is greater than a second preset threshold; the filter screen life detection circuit further includes: and the early warning circuit is connected with the main control circuit and is used for sending out early warning signals according to the early warning control signals. In some embodiments, the air duct is a "Y" shaped structure; The dust detection circuit comprises a first dust sensor and a second dust sensor, the first dust sensor and the second dust sensor are respectively arranged on two branches of the air duct, the first dust sensor generates a first dust detection signal, the second dust sensor generates a second dust detection signal, and the main control circuit generates a filter screen replacement signal according to the first dust detection signal and the second dust detection signal. In some embodiments, the master circuit generates the screen change signal if the voltage of the first mote detection signal or the second mote detection signal is greater than a first preset threshold. In some embodiments, a fan is arranged at the other end of the air duct, the fan is connected with the main control circuit, and the main control circuit is further used for controlling the start of the dust detection circuit when the fan is started and detecting the dust concentration in the air duct. In some embodiments, the main control circuit is further configured to continuously receive the dust detection signal in a first preset time period after the fan is started, obtain a dust concentration curve according to the dust detection signal, and generate a filter screen replacement signal according to the dust detection signal. In some embodiments, the main control circuit is further configured to determine, according to the dust concentration curve, a time integrated value in which the dust concentration is greater than a preset dust concentration threshold, and generate the screen replacement signal when a