KR100963779B1 - A power supply system for automatic vacuum cleaner - Google Patents

Abstract

The present invention relates to a power supply system of a vacuum cleaner for low power control.

The present invention provides a rechargeable battery, a main switch that is turned on / off by a user's operation to enable selective use of power charged in the battery, and the main switch is turned on. In this state, the power is supplied through the battery to generate a call power of a digital signal processor (DSP) and a call power generated through the first power supply path. The digital signal processing device (DSP) is called and operates a switching device through the digital signal processing device (DSP) to generate a second power supply path for generating effective power for electrical components, and the second power supply path. A third power source for operating the switching element in a digital signal processing device (DSP) supplied with active power so that the battery power is applied to the motor by a pulse width modulation (PWM) method Class path; is configured to include a. According to the present invention having such a configuration, there is an advantage that the circuit configuration is simplified.

Vacuum cleaner, motor, filter, field effect transistor, digital signal processing device

Description

A power supply system for automatic vacuum cleaner

The present invention relates to a power supply system of a vacuum cleaner for low power control.

In general, an automatic vacuum cleaner, called a robot cleaner, moves to clean a predetermined area while moving on its own without continuous operation by the user. The type of cleaning area is detected and the obstacles inside the cleaning area are detected and avoided to drive the cleaning area.

To this end, various types and number of sensing sensors are provided inside the automatic cleaner, and sensing information through the sensing sensors is collected by a control unit to control the running of the automatic cleaner.

The control of such a vacuum cleaner is divided into Off / Ready / Moving / Sleep states, and the degree of using battery power varies according to each state.

On the other hand, the power supply for the driving of the vacuum cleaner as described above is made through a battery mounted on the automatic cleaner, the battery management system (Battery Management System: BMS) is built in the control unit of the vacuum cleaner.

The battery management system (BMS) embedded in the battery is configured to block the power supply to the controller when the automatic cleaner is in an off state and to consume only the driving power of the battery management system (BMS).

On the other hand, by detecting the power switch On (On) / Off (Off) signal of the vacuum cleaner in the battery management system (BMS) and supplies the battery power to the controller.

The control unit generates and supplies an effective power source configured to have different voltages through separate power circuits to the motor, the sensor, and the display, and supplies the same, so that the automatic cleaner runs and cleans the inside of the cleaning area while avoiding obstacles. Allow the work to be done.

However, the above conventional technologies have the following problems.

In the prior art, a power circuit for supplying power to the motor, the sensor, and the display is separately configured to reduce the power consumption of the battery.

Therefore, there is a problem in that the number of switching elements and peripheral components for the power circuit configuration as described above increases.

In addition, as described above, the circuit configuration is complicated and the number of parts increases, which increases the manufacturing time of the product. In addition, the material cost increases, and thus the productivity of the automatic cleaner is lowered.

In addition, there is a problem that the manufacturing cost of the product is increased due to the increase in the manufacturing time and material cost of the product as described above, the unit price of the product is increased.

An object of the present invention, which was devised to solve the problems of the prior art as described above, is to provide a power supply system for an automatic cleaner configured as a power switching control method for reducing battery consumption power of the automatic cleaner.

Another object of the present invention is to provide a power supply system for a vacuum cleaner in which the number of switching elements and peripheral components is reduced by reducing the number of power supply circuits for forming a power supply having a different voltage with a sensor, a display, and a motor of the vacuum cleaner. It is.

Another object of the present invention is to provide a power supply system for an automatic vacuum cleaner in which a circuit configuration is simplified by reducing the number of components required for power supply.

The present invention provides a rechargeable battery, a main switch that is turned on / off by a user's operation to enable selective use of power charged in the battery, and the main switch is turned on. A first power supply path for receiving power through the battery in a state and generating a call power of a digital signal processor (DSP) and a call power generated through the first power supply path; A second power supply path for calling a digital signal processing device (DSP) to operate a switching element through the digital signal processing device (DSP) to generate an effective power source for an electric component, and by the second power supply path A third power source that operates the switching element in a digital signal processing device (DSP) supplied with active power so that battery power is applied to the motor by a pulse width modulation (PWM) method. Including the class path is characterized in that configuration.

According to the present invention having the above characteristics, there is an advantage that the number of components of the switching element and the peripheral circuit provided for each of a plurality of loads that require battery power supply in the automatic cleaner.

In addition, since the number of components is reduced as described above, there is an advantage in that the circuit configuration is simplified, thereby improving productivity.

Hereinafter, with reference to the accompanying drawings will be described a specific embodiment of the present invention. However, the spirit of the present invention is not limited to the embodiments presented, and those skilled in the art who understand the spirit of the present invention can easily suggest other embodiments within the scope of the same idea.

Figure 1 is a perspective view showing the appearance of the automatic vacuum cleaner employing the power supply system of the automatic vacuum cleaner according to the present invention.

As shown in the drawings, an embodiment of the automatic cleaner 100 in which the present invention is employed includes a main body 110 forming an appearance, a cover assembly 120 provided along an edge of the main body 110, and A suction device (not shown) provided inside the main body 110 to generate suction force, a suction part (not shown) that sucks dust from the floor by driving the suction device, and foreign matters in the air sucked from the suction part. It is comprised including the dust collector 140 which collects dust.

In addition, the automatic cleaner 100 is provided on both sides of the lower portion of the main body 110 to drive wheels 150 to enable movement of the automatic cleaner 100, and to control the operation of the automatic cleaner 100. A control unit and a battery (200 in FIG. 2) for supplying power to the vacuum cleaner 100 are included.

In addition, each of the main body 110 and the cover assembly 120 includes an ultrasonic sensor for detecting an obstacle in the room, and the automatic cleaner 100 to return to the charging device for charging the battery 200. Charging device detection sensor (not shown), PSD (not shown) for detecting the wall and the cliff and obstacles, and collision detection switch (not shown) for detecting the collision of the main body 110 of the vacuum cleaner 100, etc. Is provided so that the automatic cleaner 100 can run to avoid obstacles and cliffs (Cliff) and the like.

In addition, an upper side of the main body 110 is provided with an operation button 116 that can operate the operation of the automatic cleaner 100, and a display 114 for displaying the operating state of the automatic cleaner 100, and the like. . In addition, an outlet 112 through which the sucked air is discharged is formed at an approximately central portion of the main body 110.

Meanwhile, three sensor holes 122 are formed in the cover assembly 120 to facilitate detection of ultrasonic waves transmitted and received by the ultrasonic sensor 400.

The controller (not shown) is a device including a microprocessor and a predetermined data storage device to perform an operation of the vacuum cleaner 100.

The controller determines whether the battery 200 is charged by sensing the remaining amount of the battery 200.

When the battery 200 is required to be charged, the automatic cleaner 100 is controlled to be moved to the charging device by receiving a signal transmitted from the charging device from the charging device detection sensor. Battery management system (BMS) is provided.

In addition, the driving wheels 150 are provided at the left and right sides of the driving wheels 150, respectively, and are controlled by motors provided separately, so that the driving wheels 150 can be moved forward and backward as well as changing directions.

On the other hand, as described above, the motor for rotating the driving wheel 150 (reference numeral 400 in FIG. 2), a plurality of sensing to allow the automatic cleaner 100 running by the rotation of the driving wheel 150 to detect the obstacle The sensor (reference numeral 500 in FIG. 2) and the display 114 showing the operating state of the automatic cleaner 100 are configured to be supplied with the necessary power by the power supply system to be described below through the battery.

Hereinafter, the configuration and control process of the power supply system of the automatic cleaner according to the present invention will be described in detail with reference to the accompanying drawings.

2 and 3 is a view showing the configuration and control state of the power supply system of the automatic cleaner according to the present invention, Figure 4 is a flow chart showing the control sequence according to the power supply system of the automatic cleaner according to the present invention. Is shown.

As shown in these figures, first, in the power supply system of the automatic cleaner 100 according to the present invention, three power sources using the battery 200 for supplying power and the power provided through the battery 200 are provided. Supply paths 600, 700, and 800 are configured.

In addition, the power provided through the three power supply paths 600, 700, and 800 is the power required by the digital signal processing device (DSP, 300), the motor 400, and the plurality of detection sensors 500 and the display 114. By supplying the vacuum cleaner 100 according to the present invention is enabled.

In detail, first, the power charged in the battery 200 is charged in the battery 200 before connecting the main switch 620 provided on the first power supply path 600 to be described below. The use of the supplied power supply is cut off.

That is, when the user does not operate the main switch 620 directly, the consumption of power charged in the battery 200 is prevented, and thus the power consumption is reduced.

On the other hand, when the main switch 620 is turned on (On) by the user, the battery 200 and the first power supply path 600 to be described in detail below is connected.

The first power supply path 600 is for enabling the digital signal processing device DSP 300 to operate by supplying call power to the digital signal processing device DSP. It generates a 4.6V power supply that is a voltage maintaining the sleep state of the signal processing device (DSP, 300).

In addition, the generated 4.6V power is divided into 3.3V and 1.9V by a voltage divider circuit, and the digital signal processor (DSP) is supplied by supplying the divided power to the digital signal processor (DSP, 300). 300 is called.

The digital signal processing apparatus (DSP) 300, which is called as described above, operates the first switching device 720 for operating the second power supply path 700 for generating effective power for the electronic component through the battery 200. It works.

In addition, when the first switching device 720 is operated as described above, 5V power is generated through the power supply circuit, and the 5V power generated as described above is provided to the detection sensor 500 and the display 114. It would be desirable to use a field effect transistor (FET) as the switching element of the function.

Meanwhile, the digital signal processing device (DSP) 300 also operates the second switching device 800 that operates the third power supply path together with the first switching device 720.

Then, when the second switching device 800 is operated as described above, the motor 400 in a pulse width modulation method through a power supply circuit for generating a 16V power source that is a voltage applied from the battery 200 to the motor 400. Power is supplied.

That is, the power charged in the battery 200 generates the call power of the digital signal processing device DSP 300 through the first power supply path 600, and the call power generated as described above is applied. The digital signal processing device (DSP) 300 operates the first switching element 720 and the second switching element 800 to be effective for the plurality of sensing sensors 500, the display 114, and the motor 400. The power circuit is driven.

In addition, the plurality of detection sensors 500, the display 114, and the motor 400 operate through the power generated through the power circuit.

In addition, the first power supply path 600 detects the amount of active power for electronic components generated by the first switching device 720 by the digital signal processing device (DSP, 300) and detects the first power supply. A current limiting circuit for blocking the power supply path 600 is provided.

That is, when the amount of effective power for the electronic component exceeds the sleep power of the digital signal processing device DSP through the current limiting circuit, the first power supply path 600 is detected. Shutdown

On the other hand, in the automatic cleaner 100 employing the present invention, if the control signal is not generated for a predetermined time, the digital signal processing apparatus DSP 300 is switched to the sleep state.

In the sleep state as described above, when there is no control input for a predetermined time in order to reduce the power consumption of the vacuum cleaner 100, the power supplied to the motor 400, the sensor 500, and the display 114 is turned off. Power is supplied to cut off and maintain the sleep state as described above only in the digital signal processing device (DSP) 300.

In addition, one side of the digital signal processing apparatus (DSP, 300) is provided in series with a real-time clock (RTC, 900) to maintain the sleep state of the automatic cleaner 100. The pulse signal is continuously sent at regular time intervals.

Also, the RTC 900 detects a sleep state holding time of the digital signal processing device DSP 300 when the automatic cleaner 100 employing the present invention is stopped. If the detected sleep state holding time exceeds the set time, the entire power of the automatic cleaner 100 is cut off.

1 is a perspective view showing the appearance of an automatic vacuum cleaner employing a power supply system for an automatic vacuum cleaner according to the present invention;

2 and 3 is a view showing the configuration and control state of the power supply system of the automatic cleaner according to the present invention.

Figure 4 is a flow chart showing the control procedure according to the power supply system of the automatic cleaner according to the present invention.

Explanation of symbols on the main parts of the drawings

100 ... vacuum cleaner 110.

120 ..... Cover assembly 140 ..... Dust collector

150 ..... wheel 200 ..... battery

300 ..... DSP 400 ..... Motor

500 ..... Detection sensor 600 ..... First power supply path

620 ..... Main switch 700 ..... Second power supply path

720 ..... The first switching element 800 ..... The second switching element

900 ..... RTC

Claims (7)

Rechargeable battery; A main switch that is turned on / off by a user operation to enable selective use of the power charged in the battery; A first power supply path receiving power through the battery while the main switch is turned on, and generating call power of a digital signal processor (DSP); The digital signal processing device (DSP) is called using the call power generated through the first power supply path, and the switching element is operated through the digital signal processing device (DSP) to generate effective power for electronic components. A second power supply path; A third power supply for operating the switching element in a digital signal processing device (DSP) supplied with effective power by the second power supply path so that battery power is applied to the motor by a pulse width modulation (PWM) method; Path; Power supply system for a vacuum cleaner, characterized in that configured to include. delete The method of claim 1, wherein in the first power supply path, And the first power supply path is cut off when the second power supply path consumes an effective power supply for an electric component more than a current value set in the current limiting circuit. According to claim 1, wherein the digital signal processing device (DSP), When the main switch is turned on and the digital signal processing device (DSP) is activated, the digital signal processing device (DSP) is checked by checking the sleep state duration of the digital signal processing device (DSP). Power supply system of the automatic cleaner, characterized in that the Real Time Clock (RTC) is connected to cut off the power supplied to. Rechargeable battery; A main switch that is turned on / off by a user operation to enable selective use of the power charged in the battery; A first power supply path receiving power through the battery while the main switch is turned on, and generating call power of a digital signal processor (DSP); A second power supply path activated by the first power supply path; And a third power supply path through which the switching element is operated by the activated second power supply path to supply the battery power to the motor. The method of claim 5, wherein in the second power supply path, The digital signal processing device (DSP) is called by using the call power generated through the first power supply path, and a switching element is operated through the digital signal processing device (DSP) so that the effective power source for an electronic component is used to supply the battery. Power supply system of the automatic cleaner, characterized in that generated through. The method of claim 6, wherein in the third power supply path, The power supply system of the vacuum cleaner, characterized in that the power of the battery is applied to the motor by a pulse width modulation (PWM) method by operating the switching element in the digital signal processing device (DSP) supplied with the effective power .

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