CN215453347U - Little night-light control circuit of light and shade response - Google Patents

Little night-light control circuit of light and shade response Download PDF

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Publication number
CN215453347U
CN215453347U CN202121513698.9U CN202121513698U CN215453347U CN 215453347 U CN215453347 U CN 215453347U CN 202121513698 U CN202121513698 U CN 202121513698U CN 215453347 U CN215453347 U CN 215453347U
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circuit
signal processing
light
control chip
processing control
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刘兵
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Zhongshan Yehua Intelligent Technology Co ltd
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Zhongshan Yehua Intelligent Technology Co ltd
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    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B20/00—Energy efficient lighting technologies, e.g. halogen lamps or gas discharge lamps
    • Y02B20/30—Semiconductor lamps, e.g. solid state lamps [SSL] light emitting diodes [LED] or organic LED [OLED]
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B20/00—Energy efficient lighting technologies, e.g. halogen lamps or gas discharge lamps
    • Y02B20/40—Control techniques providing energy savings, e.g. smart controller or presence detection

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Abstract

The utility model discloses a light and shade induction small night lamp control circuit, which comprises a light source, a switch circuit, a level conversion circuit, a human body induction circuit, an ambient light detection circuit and a signal processing control chip U2.

Description

Little night-light control circuit of light and shade response
Technical Field
The utility model relates to the technical field of illumination, in particular to a control circuit of a light and shade induction small night lamp.
Background
Little night-light is a kind of more domestic appliance that uses, can throw light on at night, and light can not too strong yet, and manual control or light control are led to the fact a lot of inconveniences to the user in the dark for most of little night-lights are for convenience to design, and light-operated can be always shining at night and influence people's sleep quality and cause the electric energy waste simultaneously very easily, patent number ZL 201921795840.6's chinese utility model patent: the utility model provides a little night-light control circuit of light and shade response, its sets up vibration sensor, through the vibration information that gathers the user and produce when trampling the floor, controls the break-make of little night-light, nevertheless, this kind of technical scheme receives the influence of external noise easily in the use to the mistake appears opening.
Therefore, the existing control circuit of the light and shade induction small night lamp is to be further improved.
SUMMERY OF THE UTILITY MODEL
The utility model aims to overcome the defects in the prior art and provides a light and shade induction small night lamp control circuit which is simple in structure, can be switched between a closing mode, a normally-on mode and an automatic mode at will, and can automatically control the on and off of a light source through detecting the entering condition of a human body and the intensity of ambient light in the automatic mode.
In order to achieve the purpose, the utility model adopts the following scheme: the utility model provides a little night-light control circuit of light and shade response, is including light source, switch circuit, level conversion circuit, human induction circuit, ambient light detection circuitry, signal processing control chip U2, its characterized in that:
the light source is respectively connected with the power supply and the switch circuit;
the input end of the switch circuit is connected with the power supply, and the output end of the switch circuit is respectively connected with the light source and the level conversion circuit and is used for switching on and off or automatic three working modes of the light source;
the input end of the level conversion circuit is connected with the output end of the switch circuit, and the output end of the level conversion circuit is connected with the signal processing control chip U2 and used for converting a power supply into levels suitable for different circuits;
the human body induction circuit is connected with the signal processing control chip U2 and is used for detecting whether a human body enters a preset range;
the environment light detection circuit is connected with the signal processing control chip U2 and is used for detecting the intensity of the environment light;
the signal processing control chip U2 is connected to the level shift circuit, the human body sensing circuit, and the ambient light detection circuit, respectively, and is configured to receive human body entrance information sent by the human body sensing circuit, receive ambient light intensity information sent by the ambient light detection circuit, and send a level signal to the level shift circuit according to the human body entrance information and the ambient light intensity information, so as to control the light source to emit light.
As another improvement of the light and shade induction night lamp control circuit, the switch circuit comprises a switch K1, the switch K1 comprises a first switch contact, a second switch contact and a grounding contact which are arranged at intervals, the switch K1 further comprises a switching contact, the positive pole of the power supply, the positive pole LED of the light source and the 1 st pin of the signal processing control chip U2 are respectively connected with the first switch contact, the negative pole LED of the light source and the input end of the level conversion circuit are respectively connected with the second switch contact, and the negative pole of the power supply is grounded.
As another improvement of the light and shade induction night lamp control circuit, the level conversion circuit comprises a field effect transistor Q1, the drain electrode of the field effect transistor Q1 is connected with the output end OUT of the switch circuit, the source electrode of the field effect transistor Q1 is grounded, and the grid electrode of the field effect transistor Q1 is connected with the 5 th pin of the signal processing control chip U2; a resistor R8 is connected in series between the gate of the field effect transistor Q1 and the 5 th pin of the signal processing control chip U2, and a resistor R9 is connected in parallel between the gate of the field effect transistor Q1 and the source of the field effect transistor Q1.
As another improvement of the light and shade induction small night lamp control circuit, the human body induction circuit comprises a human body induction receiving head PIR, the D end of the human body induction receiving head PIR is connected with the positive electrode of a power supply, the G end of the human body induction receiving head PIR is connected with the negative electrode of the power supply, the S end of the human body induction receiving head PIR is connected with the 2 nd pin of a signal processing control chip U2, a capacitor C5 is connected in series between the S end of the human body induction receiving head PIR and the 2 nd pin of a signal processing control chip U2, a resistor R2 is connected in parallel with the G end of the human body induction receiving head PIR at one end of the capacitor C5, and a resistor R1 is connected in parallel with the G end of the human body induction receiving head PIR at the other end of the capacitor C5.
As another improvement of the control circuit of the light and shade induction night lamp, the ambient light detection circuit comprises a photosensitive diode CDS1, the negative electrode of the photosensitive diode CDS1 is connected with the 3 rd pin and the 4 th pin of the signal processing control chip U2, the positive electrode of the photosensitive diode CDS1 is connected with the 8 th pin and the positive electrode of the power supply of the signal processing control chip U2, and a resistor R7 and a resistor R10 are connected between the positive electrode of the power supply and the positive electrode of the photosensitive diode CDS1 in series.
As another improvement of the control circuit of the light and shade induction night lamp, a voltage stabilizing circuit is arranged between the switch circuit and the signal processing control chip U2.
As another improvement of the control circuit of the light and shade induction night lamp, the voltage stabilizing circuit comprises a voltage stabilizer U1, the input end of the voltage stabilizer U1 is connected with the positive electrode of a power supply, the output end of the voltage stabilizer U1 is connected with the No. 1 pin of a signal processing control chip U2, a capacitor C1 and a capacitor C2 are connected between the common end of the voltage stabilizer U1 and the output end of the voltage stabilizer U1 in parallel, and the common end of the voltage stabilizer U1 is grounded.
As another improvement of the control circuit of the light and shade induction night lamp, the signal processing control chip U2 is a 555 timer chip.
As another improvement of the control circuit of the light and shade induction night lamp, the control circuit is an N-channel field effect transistor.
As another improvement of the control circuit of the light and shade induction night lamp, the power supply is a 6V power supply.
As another improvement of the dimming sensing night light control circuit, a resistor R5 is connected in series between the 6 th pin and the 3 rd pin of the signal processing control chip U2, a resistor R6 is connected in series between the 6 th pin of the signal processing control chip U2 and the voltage stabilizing circuit, a resistor R4 is connected in series between the 7 th pin and the 3 rd pin of the signal processing control chip U2, and a resistor R3 is connected in series between the 7 th pin of the signal processing control chip U2 and the voltage stabilizing circuit.
In summary, compared with the prior art, the utility model has the beneficial effects that:
the utility model has simple structure, can be switched between a closing mode, a normally-on mode and an automatic mode at will, and can automatically control the on-off of the light source by detecting the entering condition of the human body and the intensity of the ambient light in the automatic mode.
Drawings
Fig. 1 is a perspective view of the present invention.
FIG. 2 is a schematic top view of the present invention.
Detailed Description
The above and further features and advantages of the present invention are described in more detail below with reference to the accompanying drawings.
Preferred embodiments of the present invention are described below with reference to the accompanying drawings. It should be understood by those skilled in the art that these embodiments are only for explaining the technical principle of the present invention, and do not limit the scope of the present invention.
It should be noted that in the description of the present invention, the terms of direction or positional relationship indicated by the terms "upper", "lower", "left", "right", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, which are only for convenience of description, and do not indicate or imply that the device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention.
Furthermore, it should be noted that, in the description of the present invention, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
As shown in fig. 1-2, a light and shade induction night lamp control circuit comprises a light source, a switch circuit, a level conversion circuit, a human body induction circuit, an ambient light detection circuit, a signal processing control chip U2,
the light source is respectively connected with the power supply and the switch circuit; the power supply can be commercial power or a built-in power supply, and when the commercial power is used, alternating current voltage needs to be converted into direct current voltage through an AC-DC conversion power supply circuit; when a built-in power supply is used, the power supply is a 6V power supply.
The input end of the switch circuit is connected with the power supply, and the output end of the switch circuit is respectively connected with the light source and the level conversion circuit and is used for switching ON/OFF of the light source or automatic AUTO;
the input end of the level conversion circuit is connected with the output end of the switch circuit, and the output end of the level conversion circuit is connected with the signal processing control chip U2 and used for converting a power supply into levels suitable for different circuits;
the human body induction circuit is connected with the signal processing control chip U2 and is used for detecting whether a human body enters a preset range; the human body induction circuit can induce whether a person moves within the range of 3-5 meters of the small night lamp.
The environment light detection circuit is connected with the signal processing control chip U2 and is used for detecting the intensity of the environment light; in the present invention, sensing is effective when ambient light is less than 10 LUX.
The signal processing control chip U2 is connected to the level shift circuit, the human body sensing circuit, and the ambient light detection circuit, respectively, and is configured to receive human body entrance information sent by the human body sensing circuit, receive ambient light intensity information sent by the ambient light detection circuit, and send a level signal to the level shift circuit according to the human body entrance information and the ambient light intensity information, so as to control the light source to emit light. When the human body sensing circuit detects that a human body enters and the ambient light is less than 10LUX, the light source is controlled to be turned on.
The switch circuit comprises a switch K1, the switch K1 comprises a first switch contact, a second switch contact and a grounding contact which are arranged at intervals, the switch also comprises a switching contact, the positive pole of the power supply, the positive pole LED of the light source and the No. 1 pin of the signal processing control chip U2 are respectively connected with the first switch contact, the negative pole LED of the light source and the input end of the level conversion circuit are respectively connected with the second switch contact, and the negative pole of the power supply is grounded.
The level conversion circuit comprises a field effect transistor Q1, wherein the drain electrode of the field effect transistor Q1 is connected with the output end OUT of a switch circuit, the source electrode of the field effect transistor Q1 is grounded, and the grid electrode of the field effect transistor Q1 is connected with the 5 th pin of a signal processing control chip U2; a resistor R8 is connected in series between the gate of the field effect transistor Q1 and the 5 th pin of the signal processing control chip U2, and a resistor R9 is connected in parallel between the gate of the field effect transistor Q1 and the source of the field effect transistor Q1.
The human body induction circuit comprises a human body induction receiving head PIR, wherein the D end of the human body induction receiving head PIR is connected with the positive electrode of a power supply, the G end of the human body induction receiving head PIR is connected with the negative electrode of the power supply, the S end of the human body induction receiving head PIR is connected with the 2 nd pin of a signal processing control chip U2, a capacitor C5 is connected in series between the S end of the human body induction receiving head PIR and the 2 nd pin of a signal processing control chip U2, one end of the capacitor C5 is connected with the G end of the human body induction receiving head PIR in parallel and is connected with a resistor R2, and the other end of the capacitor C5 is connected with the G end of the human body induction receiving head PIR in parallel and is connected with a resistor R1.
When a person enters the sensing range of the small night lamp, the human body sensing receiving head PIR sensing environment generates a strong pulse signal and a weak pulse signal, and a 2 nd pin of an effective pulse signal input signal processing control chip U2 is obtained.
The ambient light detection circuit comprises a photosensitive diode CDS1, wherein the negative electrode of the photosensitive diode CDS1 is connected with the 3 rd pin and the 4 th pin of a signal processing control chip U2, the positive electrode of the photosensitive diode CDS1 is connected with the 8 th pin of the signal processing control chip U2 and the positive electrode of a power supply, and a resistor R7 and a resistor R10 are connected between the positive electrode of the power supply and the positive electrode of the photosensitive diode CDS1 in series.
Utility model be equipped with voltage stabilizing circuit between switch circuit and the signal processing control chip U2. The voltage stabilizing circuit comprises a voltage stabilizer U1, wherein the input end of the voltage stabilizer U1 is connected with the anode of a power supply, the output end of the voltage stabilizer U1 is connected with the 1 st pin of a signal processing control chip U2, a capacitor C1 and a capacitor C2 are connected between the common end of the voltage stabilizer U1 and the output end of the voltage stabilizer U1 in parallel, and the common end of the voltage stabilizer U1 is grounded.
The signal processing control chip U2 is a 555 timer chip.
A resistor R5 is connected in series between the 6 th pin and the 3 rd pin of the signal processing control chip U2, a resistor R6 is connected in series between the 6 th pin of the signal processing control chip U2 and a voltage stabilizing circuit, a resistor R4 is connected in series between the 7 th pin and the 3 rd pin of the signal processing control chip U2, and a resistor R3 is connected in series between the 7 th pin of the signal processing control chip U2 and the voltage stabilizing circuit.
The utility model relates to an N-channel field effect transistor.
The light source is an LED lamp bead.
The working principle of the induction night lamp is as follows:
switching by the K1 switch in the switching circuit: AUTO, OFF & ON;
1. when the K1 is switched to the ON mode, the anode and the cathode of the load LED are communicated with the anode and the cathode of the built-in battery through K1 contacts, and the lamp is normally ON;
2. when the K1 is switched to an OFF mode, the built-in battery is completely cut OFF, the product is powered OFF and does not work, and the load lamp is not on;
3. when the K1 is switched to AUTO mode, the U1 obtains electricity and outputs 2.5V to the human body induction receiving head PIR and the signal processing control chip U2; a pin 5 of the signal processing control chip U continuously outputs a high level for 2 seconds and then changes into a low level, the field effect tube Q1 is switched on for 2 seconds and then is switched off, and the load lamp is turned on for 2 seconds and then is turned off; when a person is sensed within the sensing range of 3-5 meters, the lamp is turned on for 30 seconds and then turned off, and when the person is sensed to move again, the timer is counted down again.
The foregoing shows and describes the general principles and features of the present invention, together with the advantages thereof. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the utility model as claimed. The scope of the utility model is defined by the appended claims and equivalents thereof.

Claims (10)

1. The utility model provides a little night-light control circuit of light and shade response, is including light source, switch circuit, level conversion circuit, human induction circuit, ambient light detection circuitry, signal processing control chip U2, its characterized in that:
the light source is respectively connected with the power supply and the switch circuit;
the input end of the switch circuit is connected with the power supply, and the output end of the switch circuit is respectively connected with the light source and the level conversion circuit and is used for switching on and off or automatic three working modes of the light source;
the input end of the level conversion circuit is connected with the output end of the switch circuit, and the output end of the level conversion circuit is connected with the signal processing control chip U2 and used for converting a power supply into levels suitable for different circuits;
the human body induction circuit is connected with the signal processing control chip U2 and is used for detecting whether a human body enters a preset range;
the environment light detection circuit is connected with the signal processing control chip U2 and is used for detecting the intensity of the environment light;
the signal processing control chip U2 is connected to the level shift circuit, the human body sensing circuit, and the ambient light detection circuit, respectively, and is configured to receive human body entrance information sent by the human body sensing circuit, receive ambient light intensity information sent by the ambient light detection circuit, and send a level signal to the level shift circuit according to the human body entrance information and the ambient light intensity information, so as to control the light source to emit light.
2. The control circuit of a bright and dark induction night lamp as claimed in claim 1, wherein the switch circuit comprises a switch K1, the switch K1 comprises a first switch contact, a second switch contact and a ground contact which are arranged at intervals, and further comprises a switching contact, the positive pole of the power supply, the positive pole of the light source, the 1 st pin of the signal processing control chip U2 are respectively connected with the first switch contact, the negative pole of the light source, the input end of the level conversion circuit are respectively connected with the second switch contact, and the negative pole of the power supply is grounded.
3. The control circuit of a small night light with light and shade induction as claimed in claim 1, wherein the level shifting circuit includes a field effect transistor Q1, the drain of the field effect transistor Q1 is connected with the output terminal OUT of the switching circuit, the source of the field effect transistor Q1 is grounded, the gate of the field effect transistor Q1 is connected with the 5 th pin of the signal processing control chip U2; a resistor R8 is connected in series between the gate of the field effect transistor Q1 and the 5 th pin of the signal processing control chip U2, and a resistor R9 is connected in parallel between the gate of the field effect transistor Q1 and the source of the field effect transistor Q1.
4. The light and shade induction small night lamp control circuit as claimed in claim 1, wherein the human body induction circuit comprises a human body induction receiving head PIR, the D end of the human body induction receiving head PIR is connected with the positive electrode of the power supply, the G end of the human body induction receiving head PIR is connected with the negative electrode of the power supply, the S end of the human body induction receiving head PIR is connected with the 2 nd pin of the signal processing control chip U2, a capacitor C5 is connected in series between the S end of the human body induction receiving head PIR and the 2 nd pin of the signal processing control chip U2, one end of the capacitor C5 is connected with the G end of the human body induction receiving head PIR in parallel and connected with a resistor R2, and the other end of the capacitor C5 is connected with the G end of the human body induction receiving head PIR in parallel and connected with a resistor R1.
5. The dimming sensing small night light control circuit as claimed in claim 1, wherein the ambient light sensing circuit comprises a photo diode CDS1, the cathode of the photo diode CDS1 is connected to the 3 rd pin and the 4 th pin of the signal processing control chip U2, the anode of the photo diode CDS1 is connected to the 8 th pin of the signal processing control chip U2 and the anode of the power supply, and a resistor R7 and a resistor R10 are connected in series between the anode of the power supply and the anode of the photo diode CDS 1.
6. The control circuit of a small night light with light and shade induction as claimed in claim 1, wherein a voltage stabilizing circuit is provided between the switch circuit and the signal processing control chip U2.
7. The control circuit of a small night light with light and shade induction as set forth in claim 6, wherein the voltage stabilizing circuit includes a voltage stabilizer U1, the input terminal of the voltage stabilizer U1 is connected with the positive electrode of the power supply, the output terminal of the voltage stabilizer U1 is connected with the 1 st pin of the signal processing control chip U2, a capacitor C1 and a capacitor C2 are connected between the common terminal of the voltage stabilizer U1 and the output terminal of the voltage stabilizer U1 in parallel, and the common terminal of the voltage stabilizer U1 is grounded.
8. The night light control circuit as claimed in claim 1, wherein the signal processing control chip U2 is a 555 timer chip.
9. A night light control circuit as claimed in claim 1 wherein the power supply is a 6V power supply.
10. The night-light control circuit as claimed in claim 6 or 7, wherein a resistor R5 is connected in series between the 6 th pin and the 3 rd pin of the signal processing control chip U2, a resistor R6 is connected in series between the 6 th pin of the signal processing control chip U2 and the voltage regulator circuit, a resistor R4 is connected in series between the 7 th pin and the 3 rd pin of the signal processing control chip U2, and a resistor R3 is connected in series between the 7 th pin of the signal processing control chip U2 and the voltage regulator circuit.
CN202121513698.9U 2021-07-05 2021-07-05 Little night-light control circuit of light and shade response Active CN215453347U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202121513698.9U CN215453347U (en) 2021-07-05 2021-07-05 Little night-light control circuit of light and shade response

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202121513698.9U CN215453347U (en) 2021-07-05 2021-07-05 Little night-light control circuit of light and shade response

Publications (1)

Publication Number Publication Date
CN215453347U true CN215453347U (en) 2022-01-07

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Application Number Title Priority Date Filing Date
CN202121513698.9U Active CN215453347U (en) 2021-07-05 2021-07-05 Little night-light control circuit of light and shade response

Country Status (1)

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CN (1) CN215453347U (en)

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