CN211656454U - Infrared gesture brightness control circuit of mobile lighting headlamp - Google Patents
Infrared gesture brightness control circuit of mobile lighting headlamp Download PDFInfo
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- CN211656454U CN211656454U CN202020730584.9U CN202020730584U CN211656454U CN 211656454 U CN211656454 U CN 211656454U CN 202020730584 U CN202020730584 U CN 202020730584U CN 211656454 U CN211656454 U CN 211656454U
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Abstract
The utility model relates to a mobile lighting head lamp, in particular to an infrared gesture brightness adjusting circuit of a mobile lighting head lamp, which comprises a main circuit and a control circuit used for controlling the main circuit; control circuit comprises linear step-down chip U1, singlechip U2, infrared receiving sensor U3 and three infrared emission pipe, main circuit comprises DC-DC power chip U5, current detection resistance 30mR, operational amplifier U4 and LED, the utility model discloses a main circuit and control circuit's setting, can be simple can realize the control to infrared signal through removing the palm to realize the free regulation to light luminance, need not hand direct contact light switch, it is very convenient.
Description
Technical Field
The utility model relates to a remove the illumination headlight, especially a remove infrared gesture brightness control circuit of illumination headlight.
Background
The common movable lighting head lamp realizes the adjustment of lighting brightness by touching the key, and people are required to manually operate the key. When the headlamp is used, if the illumination brightness is required to be adjusted, but the hands of a person are inconvenient to operate a key, for example, the hands are dirty or in other cases, the adjustment of the illumination brightness cannot be realized, and therefore, an infrared gesture brightness adjusting circuit for moving the headlamp is provided.
SUMMERY OF THE UTILITY MODEL
The utility model discloses an aim at is through proposing a removal illumination headlight infrared gesture brightness control circuit to solve the defect that proposes in the above-mentioned background art.
The utility model adopts the technical scheme as follows:
an infrared gesture brightness adjusting circuit of a mobile lighting headlamp comprises a main circuit and a control circuit used for controlling the main circuit;
the control circuit is composed of a linear voltage-reducing chip U1, a single chip microcomputer U2, an infrared receiving sensor U3 and three infrared transmitting tubes, wherein the three infrared transmitting tubes are an infrared transmitting tube D1, an infrared transmitting tube D2 and an infrared transmitting tube D3 respectively, a pin 2 of the linear voltage-reducing chip U1 is connected with a pin 1 of the single chip microcomputer U2, a pin 6 of the single chip microcomputer U2 is connected with a pin 2 of an infrared receiving sensor U3, a pin 6 of the infrared receiving sensor U3 is connected with the negative electrode of the infrared transmitting tube D3, a pin 7 of the infrared receiving sensor U3 is connected with the negative electrode of the infrared transmitting tube D35 2, and a pin 9 of the infrared receiving sensor U3 is connected with the negative electrode of the infrared transmitting tube D1;
the main circuit is composed of a DC-DC power supply chip U5, a current detection resistor 30mR, an operational amplifier U4 and an LED, wherein the operational amplifier U4 comprises an operational amplifier U4A and an operational amplifier U4B which are connected in parallel, a VOUT port of the DC-DC power supply chip U5 is connected with the anode of the LED, an FB port of the DC-DC power supply chip U5 is connected with the output end of the operational amplifier U4B, and a non-inverting input end of the operational amplifier U4B is connected with the cathode of the LED.
As an optimal technical solution of the utility model: and the RA4 port of the singlechip U2 is in signal connection with the EN port of the DC-DC power supply chip U5.
As an optimal technical solution of the utility model: the CLR port of the single chip microcomputer U2 is connected with a key SW.
As an optimal technical solution of the utility model: and the VIN port of the linear voltage reduction chip U1 is connected with the anode of the battery.
As an optimal technical solution of the utility model: and the VIN port of the DC-DC power supply chip U5 is connected with the positive electrode of the battery.
As an optimal technical solution of the utility model: the infrared transmitting tube D1, the infrared transmitting tube D2 and the infrared transmitting tube D3 are connected in parallel, and the anode of the infrared transmitting tube D1 is connected with a power line.
As an optimal technical solution of the utility model: the current detection resistor 30mR is connected between the operational amplifier U4B and the cathode of the LED, and the end of the current detection resistor 30mR is grounded.
As an optimal technical solution of the utility model: the operational amplifier U4A and the capacitor C16 are connected in parallel and then connected to the output end of the linear buck chip U1.
The utility model discloses a setting of main circuit and control circuit, can be simple can realize the control to infrared signal through removing the palm to the realization is to the free regulation of light luminance, need not hand direct contact light switch, and is very convenient.
Drawings
FIG. 1 is an illustration of the operation of a preferred embodiment of the present invention;
fig. 2 is a configuration diagram of a control circuit according to a preferred embodiment of the present invention;
fig. 3 is a configuration diagram of a main circuit according to a preferred embodiment of the present invention.
Detailed Description
It should be noted that, in the present application, features of embodiments and embodiments can be combined with each other without conflict, and the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
Referring to fig. 1-3, a preferred embodiment of the present invention provides an infrared gesture brightness adjusting circuit for a mobile lighting headlamp, comprising a main circuit and a control circuit for controlling the main circuit;
the control circuit is composed of a linear voltage-reducing chip U1, a single chip microcomputer U2, an infrared receiving sensor U3 and three infrared transmitting tubes, wherein the three infrared transmitting tubes are an infrared transmitting tube D1, an infrared transmitting tube D2 and an infrared transmitting tube D3 respectively, a pin 2 of the linear voltage-reducing chip U1 is connected with a pin 1 of the single chip microcomputer U2, a pin 6 of the single chip microcomputer U2 is connected with a pin 2 of an infrared receiving sensor U3, a pin 6 of the infrared receiving sensor U3 is connected with the negative electrode of the infrared transmitting tube D3, a pin 7 of the infrared receiving sensor U3 is connected with the negative electrode of the infrared transmitting tube D2, and a pin 9 of the infrared receiving sensor U3 is connected with the negative electrode of the infrared transmitting tube D1;
the main circuit is composed of a DC-DC power supply chip U5, a current detection resistor 30mR, an operational amplifier U4 and an LED, wherein the operational amplifier U4 comprises an operational amplifier U4A and an operational amplifier U4B which are connected in parallel, a VOUT port of the DC-DC power supply chip U5 is connected with the anode of the LED, an FB port of the DC-DC power supply chip U5 is connected with the output end of the operational amplifier U4B, and a non-inverting input end of the operational amplifier U4B is connected with the cathode of the LED.
As an optimal technical solution of the utility model: the RA4 port of the single chip microcomputer U2 is in signal connection with the EN port of the DC-DC power supply chip U5.
As an optimal technical solution of the utility model: the CLR port of the single chip microcomputer U2 is connected with a key SW.
As an optimal technical solution of the utility model: the VIN port of the linear buck chip U1 is connected to the positive electrode of the battery.
As an optimal technical solution of the utility model: the VIN port of the DC-DC power chip U5 is connected with the positive pole of the battery.
As an optimal technical solution of the utility model: the infrared transmitting tube D1, the infrared transmitting tube D2 and the infrared transmitting tube D3 are connected in parallel, and the anode of the infrared transmitting tube D1 is connected with a power line.
As an optimal technical solution of the utility model: the current detection resistor 30mR is connected between the operational amplifier U4B and the cathode of the LED, and the end of the current detection resistor 30mR is grounded.
As an optimal technical solution of the utility model: the operational amplifier U4A and the capacitor C16 are connected in parallel and then connected to the output end of U1.
It is noted that the IR emitter tube is shown as an IR LED, the IR receiver sensor U3 is shown as model Si1153, and the operational amplifier is shown as model TLV 333.
In a specific operation process, the specific principle of the control circuit is as follows: when the key SW is pressed down, a low level signal is detected by an IO port RA3 of the singlechip U2, the low level signal is processed inside the singlechip U2, a signal is output through the port RA4 to control the main circuit, and the LED lamp is lightened or turned off. When the LED lamp is in a lighting state, if the brightness of the LED lamp is required to be adjusted, the left-right waving adjustment is carried out. The brightness of the LED is adjusted to be lower towards the left, and the brightness of the LED is adjusted to be higher towards the right. The method specifically comprises the following steps: when the human hand swings from the right to the left, the infrared light emitted by the IR LED D2 will be reflected first and received by the infrared receiving sensor U3 Si 1153; to IR LED D3; finally to IR LED D1; the infrared receiving sensor U3 Si1153 judges the waving direction of a hand by receiving the sequence and time difference of three infrared lights, namely waving from the right to the left, outputs signals through the SDA and SCL ports of the U3 Si1153 and sends the signals into the RAO and RA1 ports of the single chip microcomputer U2, the single chip microcomputer U2 processes the signals according to the received signals and outputs a signal to reduce the brightness of the LED lamp of the main circuit through the RA5 port. When a human hand swings from left to right, infrared light emitted by the IRLED D1 is firstly reflected and is received and processed by the infrared receiving sensor U3 Si 1153; to IR LEDD 3; finally to IR LED D2; the infrared receiving sensor U3 Si1153 judges the waving direction of a hand by receiving the sequence and time difference of three infrared lights, namely waving from the left side to the right side, outputs signals through a SDA port and an SCL port of U3 Si1153 and sends the signals to a RAO port and an RA1 port of the single chip microcomputer U2, the single chip microcomputer U2 processes the signals according to the received signals and outputs a signal to increase the brightness of the LED lamp of the main circuit through the RA5 port; the function of adjusting the brightness of the headlamp by waving one hand is realized.
In a specific operation process, the specific principle of the main circuit is as follows: when the RA4 port of the singlechip U2 gives a high level to the EN port of the chip SCT12AO, the chip is enabled to work, and voltage and current are output through the VOUT port of the chip. The output current passes through the LED + of the LED part to the LED-, and then returns to the cathode of the battery through the current detection resistor. The function of brightness adjustment is to output a PWM signal through a port RA5 of a singlechip U2 for adjustment, and specifically comprises the following steps: the PWM signal reaches the inverting terminal of the operational amplifier TLV333 through voltage division of the resistor and filtering of RC, and if the voltage of the PWM signal is changed, the voltage reaching the inverting terminal of the operational amplifier is changed accordingly. According to the principle that the non-inverting terminal and the inverting terminal of the operational amplifier are short, the voltage of the non-inverting terminal of the operational amplifier is changed. According to the calculation of I ═ U/R, R is a current detection resistance and is a fixed value. The change of the output current I is changed according to the change of the non-inverting terminal U of the operational amplifier, so as to achieve the purpose of changing the output current and achieve the function of adjusting the brightness.
It is obvious to a person skilled in the art that the invention is not restricted to details of the above-described exemplary embodiments, but that it can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.
Claims (8)
1. An infrared gesture brightness adjusting circuit of a mobile lighting headlamp is characterized in that: the device comprises a main circuit and a control circuit for controlling the main circuit;
the control circuit is composed of a linear voltage-reducing chip U1, a single chip microcomputer U2, an infrared receiving sensor U3 and three infrared transmitting tubes, wherein the three infrared transmitting tubes are an infrared transmitting tube D1, an infrared transmitting tube D2 and an infrared transmitting tube D3 respectively, a pin 2 of the linear voltage-reducing chip U1 is connected with a pin 1 of the single chip microcomputer U2, a pin 6 of the single chip microcomputer U2 is connected with a pin 2 of an infrared receiving sensor U3, a pin 6 of the infrared receiving sensor U3 is connected with the negative electrode of the infrared transmitting tube D3, a pin 7 of the infrared receiving sensor U3 is connected with the negative electrode of the infrared transmitting tube D35 2, and a pin 9 of the infrared receiving sensor U3 is connected with the negative electrode of the infrared transmitting tube D1;
the main circuit is composed of a DC-DC power supply chip U5, a current detection resistor 30mR, an operational amplifier U4 and an LED, wherein the operational amplifier U4 comprises an operational amplifier U4A and an operational amplifier U4B which are connected in parallel, a VOUT port of the DC-DC power supply chip U5 is connected with the anode of the LED, an FB port of the DC-DC power supply chip U5 is connected with the output end of the operational amplifier U4B, and a non-inverting input end of the operational amplifier U4B is connected with the cathode of the LED.
2. The infrared gesture brightness adjustment circuit of a mobile lighting headlamp of claim 1, characterized in that: and the RA4 port of the singlechip U2 is in signal connection with the EN port of the DC-DC power supply chip U5.
3. The infrared gesture brightness adjustment circuit of a mobile lighting headlamp of claim 1, characterized in that: the CLR port of the single chip microcomputer U2 is connected with a key SW.
4. The infrared gesture brightness adjustment circuit of a mobile lighting headlamp of claim 1, characterized in that: and the VIN port of the linear voltage reduction chip U1 is connected with the anode of the battery.
5. The infrared gesture brightness adjustment circuit of a mobile lighting headlamp of claim 1, characterized in that: and the VIN port of the DC-DC power supply chip U5 is connected with the positive electrode of the battery.
6. The infrared gesture brightness adjustment circuit of a mobile lighting headlamp of claim 1, characterized in that: the infrared transmitting tube D1, the infrared transmitting tube D2 and the infrared transmitting tube D3 are connected in parallel, and the anode of the infrared transmitting tube D1 is connected with a power line.
7. The infrared gesture brightness adjustment circuit of a mobile lighting headlamp of claim 1, characterized in that: the current detection resistor 30mR is connected between the operational amplifier U4B and the cathode of the LED, and the end of the current detection resistor 30mR is grounded.
8. The infrared gesture brightness adjustment circuit of a mobile lighting headlamp of claim 1, characterized in that: the operational amplifier U4A and the capacitor C16 are connected in parallel and then connected to the output end of the linear buck chip U1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020730584.9U CN211656454U (en) | 2020-05-06 | 2020-05-06 | Infrared gesture brightness control circuit of mobile lighting headlamp |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020730584.9U CN211656454U (en) | 2020-05-06 | 2020-05-06 | Infrared gesture brightness control circuit of mobile lighting headlamp |
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| Publication Number | Publication Date |
|---|---|
| CN211656454U true CN211656454U (en) | 2020-10-09 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020730584.9U Active CN211656454U (en) | 2020-05-06 | 2020-05-06 | Infrared gesture brightness control circuit of mobile lighting headlamp |
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| Country | Link |
|---|---|
| CN (1) | CN211656454U (en) |
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- 2020-05-06 CN CN202020730584.9U patent/CN211656454U/en active Active
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