阅读说明：本技术 一种光敏感应灯及其控制方法 (Photosensitive induction lamp and control method thereof ) 是由 朱建武 廖志专 于 2019-10-10 设计创作，主要内容包括：本发明公开了一种光敏感应灯及其控制方法,控制电路通过LED灯脉冲驱动电路输出预设低电平脉冲宽度的时候,使LED灯灭灯,光敏传感器检测环境亮度,并将环境亮度检测值传输到控制电路上,控制电路(3)对比环境亮度检测值与环境亮度预设值,当环境亮度检测值小于环境亮度预设值时,控制电路通过LED灯脉冲驱动电路输出预设高电平脉冲宽度,使LED灯发光,此时控制电路不再检测光敏传感器检测环境亮度,当环境亮度检测值大于环境亮度预设值时,控制电路通过LED灯脉冲驱动电路输出预设低电平脉冲宽度的时候,使LED灯灭灯,使得只在LED灯关闭时才检测环境亮度实现不受自身灯光影响的精准控制。(The invention discloses a photosensitive induction lamp and a control method thereof, when a control circuit outputs a preset low-level pulse width through an LED lamp pulse driving circuit, the LED lamp is turned off, a photosensitive sensor detects the ambient brightness, and transmits the ambient brightness detection value to the control circuit, the control circuit (3) compares the ambient brightness detection value with the ambient brightness preset value, when the ambient brightness detection value is smaller than the ambient brightness preset value, the control circuit outputs preset high-level pulse width through the LED lamp pulse driving circuit to enable the LED lamp to emit light, at the moment, the control circuit does not detect the ambient brightness detected by the photosensitive sensor any more, when the ambient brightness detection value is larger than the ambient brightness preset value, the control circuit outputs the preset low-level pulse width through the LED lamp pulse driving circuit to turn off the LED lamp, the LED lamp is controlled accurately without being influenced by self light by detecting the ambient brightness only when the LED lamp is turned off.)

1. A photosensitive induction lamp, its characterized in that: comprises a lamp shell (1), a circuit board (2) is arranged in the lamp shell (1), the circuit board (2) is provided with a control circuit (3) which can store preset ambient brightness preset values and has a contrast function, the control circuit (3) is connected with an LED lamp pulse driving circuit (5) for outputting a preset high-level pulse width to control the LED lamp (4) to emit light or a preset low-level pulse width to control the LED lamp (4) not to emit light, a photosensitive sensor (6) for detecting the ambient brightness when the low-level pulse width is preset, the control circuit (3) controls the LED lamp pulse driving circuit (5) to output a preset pulse high level pulse width when the contrast ambient brightness detection value is smaller than the ambient brightness preset value, and the control circuit (3) controls the LED lamp pulse driving circuit (5) to output a preset pulse low-level pulse width when the contrast ambient brightness detection value is greater than the ambient brightness preset value.

2. The light sensitive lamp as recited in claim 1, wherein: the preset pulses are square waves with a frequency between 50-32000 HZ.

3. A control method of a photosensitive induction lamp comprises the following steps:

step a, when the control circuit (3) outputs a preset low-level pulse width through the LED lamp pulse driving circuit (5), the LED lamp (4) is turned off, the photosensitive sensor (6) detects the ambient brightness, and the ambient brightness detection value is transmitted to the control circuit (3);

step b, the control circuit (3) compares the ambient brightness detection value with the ambient brightness preset value, when the ambient brightness detection value is smaller than the ambient brightness preset value, the step c is skipped, and when the ambient brightness detection value is larger than the ambient brightness preset value, the step a is skipped;

and c, outputting a preset high-level pulse width by the control circuit (3) through the LED lamp pulse driving circuit (5) to enable the LED lamp (4) to emit light, wherein the control circuit (3) does not detect the ambient brightness detected by the photosensitive sensor (6) any more at the moment, and skipping to the step a.

4. A photosensitive induction lamp control method according to claim 3, characterized in that: the preset pulses are square waves with a frequency between 50-32000 HZ.

[ technical field ]

The invention relates to the field of illumination, in particular to a photosensitive induction lamp and a control method thereof.

[ background art ]

The common lamps adopt sound, light control, human body induction and the like, and realize the functions of not lighting the lamp in the daytime and lighting the lamp when people come or turn off the lamp when people go at night. In the product using the photosensitive device to realize the light control function, once the photosensitive starting and controlling illumination range is set, a photosensitive window needs to be set on the product, and meanwhile, the photosensitive window can be interfered by ambient light or self-reflected light, so that the photosensitive control is abnormal, the light flickers, the lamp can not be normally used, and meanwhile, the photosensitive window needs to be arranged on another plane in order to avoid the influence of the self-reflected light, the appearance of the product is influenced, and the cost is increased.

[ summary of the invention ]

The invention overcomes the defects of the technology and provides the photosensitive induction lamp and the control method thereof, and the environment brightness is detected only when the LED lamp is turned off, so that the accurate control without being influenced by the light of the LED lamp is realized.

In order to achieve the purpose, the invention adopts the following technical scheme:

the invention relates to a photosensitive induction lamp, which comprises a lamp shell 1, wherein a circuit board 2 is arranged in the lamp shell 1, the circuit board 2 is provided with a control circuit 3 which can store preset ambient brightness preset values and has a contrast function, the control circuit 3 is connected with an LED lamp pulse driving circuit 5 for outputting a preset high level pulse width to control the LED lamp 4 to emit light or a preset low level pulse width to control the LED lamp 4 not to emit light, a photosensitive sensor 6 for detecting the ambient brightness when the low level pulse width is preset, the control circuit 3 controls the LED lamp pulse driving circuit 5 to output a preset pulse high level pulse width when the contrast ambient brightness detection value is smaller than the ambient brightness preset value, and the control circuit 3 controls the LED lamp pulse driving circuit 5 to output a preset pulse low-level pulse width when the contrast ambient brightness detection value is greater than the ambient brightness preset value.

A photosensitive induction lamp control method as described above, characterized in that the preset pulse is a square wave with a frequency between 50-32000 HZ.

The invention discloses a control method of a photosensitive induction lamp, which comprises the following steps:

step a, when the control circuit 3 outputs a preset low-level pulse width through the LED lamp pulse driving circuit 5, the LED lamp 4 is turned off, the photosensitive sensor 6 detects the ambient brightness, and the ambient brightness detection value is transmitted to the control circuit 3;

step b, the control circuit 3 compares the ambient brightness detection value with the ambient brightness preset value, and jumps to step c when the ambient brightness detection value is smaller than the ambient brightness preset value, and jumps to step a when the ambient brightness detection value is larger than the ambient brightness preset value;

and step c, the control circuit 3 outputs a preset high-level pulse width through the LED lamp pulse driving circuit 5 to enable the LED lamp 4 to emit light, at the moment, the control circuit 3 does not detect the ambient brightness detected by the photosensitive sensor 6 any more, and the step a is skipped.

A photosensitive induction lamp control method as described above, characterized in that the preset pulse is a square wave with a frequency between 50-32000 HZ.

Compared with the prior art, the invention has the beneficial effects that:

according to the invention, by utilizing the light wave frequency accurate algorithm of the integrated and control circuit and the low level off time period with extremely short light emitting frequency of the LED lamp, the ambient brightness of the LED lamp in a non-light emitting state is detected by the photosensitive sensor, and the ambient brightness detection value is compared with the ambient brightness preset value so as to control the work of the LED lamp, so that the accurate detection that the photosensitive sensor is not influenced by the self light emitting brightness is realized, the LED lamp can be ensured to emit light accurately, and a light sensing window is not required to be arranged.

[ description of the drawings ]

FIG. 1 is a perspective view of the present invention;

FIG. 2 is an internal structural view of the present invention;

FIG. 3 is a circuit block diagram of the present invention;

FIG. 4 is a schematic diagram of an LED lamp circuit of the present invention;

FIG. 5 is a schematic diagram of a photosensor circuit according to the present invention;

FIG. 6 is a schematic diagram of a control circuit according to the present invention.

[ detailed description of the invention ]

The following is a more detailed description of embodiments of the invention, taken in conjunction with the accompanying drawings of which:

as shown in fig. 1-6, the photosensitive induction lamp of the present invention comprises a lamp housing 1, a circuit board 2 is disposed in the lamp housing 1, the circuit board 2 is provided with a control circuit 3 which can store preset ambient brightness preset values and has a contrast function, the control circuit 3 is connected with an LED lamp pulse driving circuit 5 for outputting a preset high level pulse width to control the LED lamp 4 to emit light or a preset low level pulse width to control the LED lamp 4 not to emit light, a photosensitive sensor 6 for detecting the ambient brightness when the low level pulse width is preset, the control circuit 3 controls the LED lamp pulse driving circuit 5 to output a preset pulse high level pulse width when the contrast ambient brightness detection value is smaller than the ambient brightness preset value, and the control circuit 3 controls the LED lamp pulse driving circuit 5 to output a preset pulse low-level pulse width when the contrast ambient brightness detection value is greater than the ambient brightness preset value.

When the LED lamp pulse driving circuit 5 outputs a preset high-level pulse width, the LED lamp 4 emits light; when the LED lamp pulse driving circuit 5 outputs a preset high-level pulse width, the LED lamp 4 does not emit light, at the moment, the photosensitive sensor 6 detects the ambient brightness, transmits an ambient brightness detection value to the control circuit 3 to be compared with the ambient brightness preset value, and when the ambient brightness detection value is smaller than the ambient brightness preset value, the control circuit 3 controls the LED lamp pulse driving circuit 5 to output a preset high-level pulse width; and when the ambient brightness detection value is larger than the ambient brightness preset value, the control circuit 3 controls the LED lamp pulse driving circuit 5 to preset a low-level pulse width.

The preset pulse is a square wave with a frequency of 50-32000HZ, and the LED lamp 4 is always in a normally-on state when observed by human eyes because of the high frequency of the preset pulse.

As shown in fig. 1-2, the lamp housing 1 includes a bottom case 11 and a face case 12, the face case 12 is provided with a lamp light-emitting panel 13 and a light-sensitive panel 14, and the LED lamp 4 and the photosensitive sensor 6 can be disposed on the same plane without being disposed on different planes due to the influence of light of the LED lamp 4.

The invention relates to a photosensitive induction lamp control method, which comprises the following steps:

step a, when the control circuit 3 outputs a preset low-level pulse width through the LED lamp pulse driving circuit 5, the LED lamp 4 is turned off, the photosensitive sensor 6 detects the ambient brightness, and the ambient brightness detection value is transmitted to the control circuit 3;

step b, the control circuit 3 compares the ambient brightness detection value with the ambient brightness preset value, and jumps to step c when the ambient brightness detection value is smaller than the ambient brightness preset value, and jumps to step a when the ambient brightness detection value is larger than the ambient brightness preset value;

and step c, the control circuit 3 outputs a preset high-level pulse width through the LED lamp pulse driving circuit 5 to enable the LED lamp 4 to emit light, at the moment, the control circuit 3 does not detect the ambient brightness detected by the photosensitive sensor 6 any more, and the step a is skipped.

The control method realizes that the photosensitive induction lamp detects the ambient light under the condition of non-luminescence of the LED and the like, avoids detection errors caused by the influence of self-reflected light, and realizes accurate detection of the ambient light so as to accurately control the luminescence work of the photosensitive induction lamp.

The above description is only exemplary of the present invention and should not be taken as limiting the invention, and any modification, equivalent replacement or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.