Dust collection ground brush light sensation lighting circuit

Abstract

The utility model relates to a light sensation lighting circuit of a dust collection floor brush. The light sensation lighting circuit comprises a first power supply voltage VCC; a resistor R1; the photosensitive sensing diode J1 is used for sensing the intensity of illumination; a second supply voltage VCC1; a triode Q1; a triode Q2; a third supply voltage VCC2; the light-emitting diode D1 is used for emitting light to provide illumination when the photosensitive induction diode J1 conducts the circuit in a photosensitive manner; and the light emitting diode D2 is used for emitting light to provide illumination when the photosensitive sensing diode J1 senses light to conduct the circuit. According to the light sensation lighting circuit of the dust collection floor brush, the light sensation induction diode can sense the light intensity in the environment and conduct or cut off according to the light intensity in the environment, so that the triode and the branch where the triode is located are conducted or cut off, control over the triode and on-off of the triode is achieved, and the lighting effect of the dust collection floor brush is improved. The light source is protected, the service life of the light source is prolonged, and electric energy can be saved.

Description

Technical Field

[0001] The utility model relates to the technical field of electronic power, in particular to a light-sensing lighting circuit for a vacuuming floor brush. Background Art

[0002] With the development of technology, smart vacuum cleaners (also known as robot vacuums) have become increasingly popular, with many households opting for them for cleaning. The floor brush is a common accessory for household vacuum cleaners, and its structure directly impacts the efficiency and effectiveness of the vacuum cleaner. As the vacuum cleaner operates, the floor brush moves across the floor to be cleaned, continuously drawing dust from the surface into the cleaner for air-to-ash separation. The dust is then drawn into the floor brush and into the dust cup, achieving the desired cleaning effect.

[0003] However, due to the small size of smart vacuum cleaners, they are not easy to be found in dark environments. Existing smart vacuum cleaners are equipped with light sources. However, existing smart vacuum cleaners do not have a photosensitivity function. When the smart vacuum cleaner is working, the light source is manually turned on. If you forget to turn it off in a well-lit place, the light source on the smart vacuum cleaner will continue to glow, consuming more electricity, resulting in an increased charging frequency of the smart vacuum cleaner and a reduced single working time, which reduces the efficiency of the smart vacuum cleaner. In addition, the light source continues to glow for a long time, which will also shorten the service life of the light source. Utility Model Content

[0004] To this end, the technical problem to be solved by the present invention is to overcome the problem that most floor brushes on the market in the existing technology do not have intelligent lighting function, and if they have lighting function, the light is turned on and off manually, which is not conducive to working in some dim environments. At the same time, since the light cannot be automatically controlled, it is easy to cause the problem of power consumption.

[0005] To solve the above technical problems, the present invention provides a light-sensing lighting circuit for a vacuum brush, comprising: a first power supply voltage VCC; a resistor R1, which is connected in series with the first power supply voltage VCC; a light-sensitive diode J1, which is connected in series with the resistor R1 between the first power supply voltage VCC and ground, and the light-sensitive diode J1 is used to sense the intensity of light; a second power supply voltage VCC1; a transistor Q1, a first end of which is connected to the second power supply voltage VCC1, and the second end of the transistor Q1 is connected between the resistor R1 and the light-sensitive diode J1; a transistor Q2, which is connected to the third end of the transistor Q1; a third power supply voltage VCC2; a light-emitting diode D1, which is used to emit light and provide lighting when the light-sensitive diode J1 senses light and turns on the circuit; a light-emitting diode D2, which is used to emit light and provide lighting when the light-sensitive diode J1 senses light and turns on the circuit, the light-emitting diode D2 is connected in parallel with the light-emitting diode D1, and the light-emitting diode D1 and the light-emitting diode D2 are connected in parallel with the transistor Q2 in series between the third power supply voltage VCC2 and ground.

[0006] In one embodiment of the present invention, the resistance of the resistor R1 is 20K.

[0007] In one embodiment of the present invention, the collector of the transistor Q1 is connected to the second power supply voltage VCC1.

[0008] In one embodiment of the present invention, the base of the transistor Q1 is connected between the resistor R1 and the light-sensitive diode J1.

[0009] In one embodiment of the present invention, the emitter of the transistor Q1 is connected to the ground, and a resistor R5 is connected in series between the emitter of the transistor Q1 and the ground.

[0010] In one embodiment of the present invention, the resistance of the resistor R5 is 1K.

[0011] In one embodiment of the present invention, the base of the transistor Q2 is connected between the emitter of the transistor Q1 and the resistor R5, and the base of the transistor Q2 is connected to the branch between the emitter of the transistor Q1 and the resistor R5, and a resistor R4 is connected in series.

[0012] In one embodiment of the present invention, the emitter of the transistor Q2 is connected to the ground.

[0013] In one embodiment of the present invention, the collector of the transistor Q2 is connected to one end of the parallel connection of the light-emitting diodes D1 and D2, and a resistor R6 is connected in series between the collector of the transistor Q2 and the branch of the parallel connection of the light-emitting diodes D1 and D2.

[0014] In one embodiment of the present invention, the resistance of the resistor R4 is 1K, and the resistance of the resistor R6 is 2.2K.

[0015] The above technical solution of the utility model has the following beneficial effects compared with the prior art:

[0016] The light-sensing lighting circuit of the vacuuming floor brush described in the present invention can sense the light intensity in the environment through the light-sensitive diode provided, and is turned on or off according to the light intensity in the environment, thereby turning on or off the transistor and the branch where the transistor is located, thereby realizing the control of the transistor and the transistor on and off. Through this automatic control method, the lighting lamp can be turned on or off without manual operation, thereby protecting the light source, extending the service life of the light source, and saving electricity. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to make the content of the utility model easier to understand, the utility model is further described in detail below based on the specific embodiments of the utility model and in conjunction with the accompanying drawings, wherein

[0018] Figure 1 This is a circuit diagram of the light-sensing lighting circuit of the vacuuming floor brush in the preferred embodiment of the present utility model.

[0019] Description of the accompanying drawings in the specification: first power supply voltage VCC, resistor R1, light-sensitive diode J1, second power supply voltage VCC1, transistor Q1, transistor Q2, third power supply voltage VCC2, light-emitting diode D1, light-emitting diode D2, resistor R5, resistor R4, resistor R6. DETAILED DESCRIPTION

[0020] The present invention will be further described below with reference to the accompanying drawings and specific embodiments so that those skilled in the art can better understand the present invention and implement it. However, the embodiments are not intended to limit the present invention.

[0021] Reference Figure 1As shown, the light-sensing lighting circuit of the vacuum brush of the present invention includes: a first power supply voltage VCC; a resistor R1, which is connected in series with the first power supply voltage VCC, and the resistance of the resistor R1 is 20K; a light-sensitive diode J1, which is connected in series with the resistor R1 between the first power supply voltage VCC and ground, and the light-sensitive diode J1 is used to sense the intensity of light; a second power supply voltage VCC1; a transistor Q1, a first end of which is connected to the second power supply voltage VCC1, and a second end of the transistor Q1 is connected to the resistor R1 and the light-sensitive diode J1; a transistor Q2 connected to the third end of the transistor Q1; a third power supply voltage VCC2; a light-emitting diode D1, configured to emit light and provide illumination when the light-sensitive diode J1 senses light and turns on the circuit; a light-emitting diode D2, configured to emit light and provide illumination when the light-sensitive diode J1 senses light and turns on the circuit, the light-emitting diode D2 being connected in parallel with the light-emitting diode D1, and the light-emitting diode D1 and the light-emitting diode D2 being connected in parallel and connected in series with the transistor Q2 between the third power supply voltage VCC2 and ground.

[0022] In the above circuit, photosensor diode J1 has unidirectional conductivity and operates under reverse voltage. In the absence of light, there is a small saturation reverse leakage current, at which point the photosensor diode is cut off. When exposed to light, the saturation reverse leakage current increases significantly. The greater the light intensity, the greater the reverse current, at which point photosensor diode J1 turns on. Transistors Q1 and Q2 are NPN transistors, which conduct when a high level is applied. Their conduction condition requires that the voltage between the base (B) and emitter (E) is greater than the turn-on voltage, which is generally between 0.6V and 0.7V.

[0023] The three pins of transistor Q1 are specifically connected as follows: the collector of transistor Q1 is connected to the second supply voltage VCC1. The base of transistor Q1 is connected between resistor R1 and light-sensitive diode J1. The emitter of transistor Q1 is connected to ground, and a resistor R5 is connected in series between the emitter of transistor Q1 and ground. The resistance of resistor R5 is 1K.

[0024] The three pins of transistor Q2 are specifically connected as follows: the base of transistor Q2 is connected between the emitter of transistor Q1 and resistor R5, and the base of transistor Q2 is connected to the branch between the emitter of transistor Q1 and resistor R5, with resistor R4 connected in series. The emitter of transistor Q2 is connected to ground. The collector of transistor Q2 is connected to one end of the parallel connection of light-emitting diodes D1 and D2, and resistor R6 is connected in series between the collector of transistor Q2 and the branch of the parallel connection of light-emitting diodes D1 and D2. The resistance of resistor R4 is 1K, and the resistance of resistor R6 is 2.2K.

[0025] The working principle of the light-sensing lighting circuit of the vacuuming floor brush of the present invention is as follows:

[0026] In a light-exposed environment, the saturated reverse leakage current of the photosensor J1 increases, forming a photocurrent. At this time, the photosensor J1 is turned on, pulling the voltage at point F to ground. The potential at point F is low, and the voltage between the base (B) and emitter (E) of the transistor Q1 is less than the turn-on voltage. At this time, Q1 is not turned on, and point H is grounded through the resistor R5. The potential at point H is low. Similarly, at this time, the voltage between the base (B) and emitter (E) of the transistor Q2 is less than the turn-on voltage, and Q2 is also not turned on. Therefore, the circuit from VCC2 to the light-emitting diodes D1 and D2 and then to the transistor Q2 is broken. Therefore, the light-emitting diodes D1 and D2 do not work in a light-exposed environment.

[0027] When there is no light, the light-sensitive diode J1 is cut off and does not conduct, the potential at point F is high, Q1 is turned on, the voltage at point H is close to the voltage of VCC1, which is high, so the transistor Q2 is turned on, so the circuit from VCC2 to light-emitting diode D1 and light-emitting diode D2 and then to transistor Q2 is normally conducted, so the light-emitting diode D1 and light-emitting diode D2 are normally illuminated in a no-light environment.

[0028] Obviously, the above embodiments are merely examples for clarity of explanation and are not intended to limit the implementation methods. Those skilled in the art will readily appreciate that other variations or modifications based on the above descriptions are possible. It is not necessary and impossible to enumerate all implementation methods here. Obvious variations or modifications arising therefrom remain within the scope of protection of the present invention.

Claims

1. A light-sensing lighting circuit for a vacuuming floor brush, characterized by: include, A first supply voltage VCC; A resistor R1 connected in series with a first power supply voltage VCC; A light-sensitive diode J1 is connected in series with the resistor R1 between the first power supply voltage VCC and the ground, and the light-sensitive diode J1 is used to sense the intensity of light; A second supply voltage VCC1; A transistor Q1 , a first end of which is connected to the second power supply voltage VCC1 , and a second end of which is connected between the resistor R1 and the light-sensitive diode J1 ; a transistor Q2 connected to the third terminal of the transistor Q1; A third power supply voltage VCC2; The light emitting diode D1 is used to emit light and provide illumination when the light sensitive diode J1 senses light and turns on the circuit; The light-emitting diode D2 is used to emit light and provide illumination when the light-sensitive diode J1 senses light and turns on the circuit. The light-emitting diode D2 is connected in parallel with the light-emitting diode D1, and the light-emitting diode D1 and the light-emitting diode D2 are connected in parallel with the transistor Q2 in series between the third power supply voltage VCC2 and the ground.

2. The light-sensing lighting circuit for a vacuuming floor brush according to claim 1, characterized in that: The resistance of the resistor R1 is 20K.

3. The light-sensing lighting circuit for a vacuuming floor brush according to claim 1, characterized in that: The collector of the transistor Q1 is connected to the second power supply voltage VCC1.

4. The light-sensing lighting circuit for a vacuuming floor brush according to claim 3, characterized in that: The base of the transistor Q1 is connected between the resistor R1 and the light-sensitive diode J1.

5. The light-sensing lighting circuit for a vacuuming floor brush according to claim 4, characterized in that: The emitter of the transistor Q1 is connected to the ground, and a resistor R5 is connected in series between the emitter of the transistor Q1 and the ground.

6. The light-sensing lighting circuit for a vacuuming floor brush according to claim 5, characterized in that: The resistance of the resistor R5 is 1K.

7. The light-sensing lighting circuit for a vacuuming floor brush according to claim 5, characterized in that: The base of the transistor Q2 is connected between the emitter of the transistor Q1 and the resistor R5 , and the base of the transistor Q2 is connected to the branch between the emitter of the transistor Q1 and the resistor R5 , and a resistor R4 is connected in series.

8. The light-sensing lighting circuit for a vacuuming floor brush according to claim 7, characterized in that: The emitter of the transistor Q2 is connected to the ground.

9. The light-sensing lighting circuit for a vacuuming floor brush according to claim 7, characterized in that: The collector of the transistor Q2 is connected to one end of the parallel connection of the light emitting diodes D1 and D2, and a resistor R6 is connected in series between the collector of the transistor Q2 and the branch of the parallel connection of the light emitting diodes D1 and D2.

10. The light-sensing lighting circuit for a vacuuming floor brush according to claim 9, characterized in that: The resistance of the resistor R4 is 1K, and the resistance of the resistor R6 is 2.2K.

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