CN114916112A - Light control method for judging ambient brightness by utilizing lamp switching threshold value and lamp - Google Patents
Light control method for judging ambient brightness by utilizing lamp switching threshold value and lamp Download PDFInfo
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- CN114916112A CN114916112A CN202210650072.5A CN202210650072A CN114916112A CN 114916112 A CN114916112 A CN 114916112A CN 202210650072 A CN202210650072 A CN 202210650072A CN 114916112 A CN114916112 A CN 114916112A
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B47/00—Circuit arrangements for operating light sources in general, i.e. where the type of light source is not relevant
- H05B47/10—Controlling the light source
- H05B47/105—Controlling the light source in response to determined parameters
- H05B47/11—Controlling the light source in response to determined parameters by determining the brightness or colour temperature of ambient light
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B45/00—Circuit arrangements for operating light-emitting diodes [LED]
- H05B45/30—Driver circuits
- H05B45/345—Current stabilisation; Maintaining constant current
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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
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- 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
A light control method for judging ambient brightness by utilizing a lamp switching threshold value and a lamp comprise a rectifying unit, a constant current unit, a light sensor unit, a control unit, a low-voltage power supply unit and a lamp bead unit. The method comprises the steps that by actively or automatically utilizing the fact that the time of the off state or the micro-bright state of the lamp bead unit is longer than the response time of the optical sensor unit, the control unit compares the collected environment photoelectric signal with the set lamp bead unit lamp on-off threshold value to judge the ambient illumination parameters and control the on-off of the lamp bead unit. The lamp can be intelligently controlled by a plurality of circuits according to the method, such as light control, sound control, induction control and the like.
Description
The technical field is as follows:
the technology designs a light automatic control technology, and particularly relates to an automatic control method of an energy-saving LED lamp and a lamp manufactured by the method.
Background art:
at present, the energy of the lighting lamp is saved, except the self power consumption, the intelligent management is adopted, and the current main conditions are as follows: scene control (presetting different scenes and controlling during scene switching), mobile sensor control (infrared, microwave, vibration and the like), ambient brightness control, time control, infrared remote control, system networking control or combination of the above control and the like.
The most common ambient brightness control is that the light-operated lamp automatically turns on at night and turns off at daytime, and the current implementation methods are roughly divided into two types:
the other is that the light-operated detection circuit is separated from the lighting lamp, when the illumination intensity is lower than a set light-on threshold value, the light starts to be turned on, because the light-operated circuit is arranged outside the lamp body, when the light is turned on, the illumination of the light-operated circuit does not trigger the photosensitive device to turn off the light, when the sunlight irradiates the photosensitive device in daytime, and when the illumination intensity is higher than the set light-off threshold value, the light is automatically turned off in daytime. The application is mature, but the cost is high, and the installation is difficult.
The other type is that the light-operated detection circuit is internally provided with the lighting lamp, the illuminance sensor is used for detecting light emitted by the sleeve at night in the daytime, the illuminance sensor needs the sleeve to shield the light emitted by the sleeve, the misjudgment due to self interference can not be carried out during detection, and the effects of turning on the lamp at night and turning off the lamp in the daytime are achieved. The method has the advantages of complex production process, high circuit cost and difficult popularization.
The invention content is as follows:
aiming at the defects of the prior art, the invention provides a method for actively or automatically comparing the collected environment photoelectric signal with the set lamp bead unit lamp on-off threshold value by utilizing the fact that the time of the off or slight-on state of the lamp bead unit is longer than the response time of the optical sensor unit so as to judge the ambient illumination parameter and control the on-off of the lamp bead unit; the method has the advantages of accurate judgment, simple circuit structure and low device cost.
In this technical document, the lamp switching threshold of the lamp bead unit means that when the lamp circuit is designed, the voltage value of the lamp bead unit which normally works is lower than the voltage value, and the lamp bead unit cannot normally work.
The ambient light level refers to the ambient light level of the lamp.
The invention can be realized by the following technical scheme that the light control method for judging the ambient brightness by utilizing the lamp switching threshold value comprises a rectifying unit, a constant current unit, a light sensor unit, a control unit, a low-voltage power supply unit and a lamp bead unit, wherein the light sensor unit is arranged in a lighting lamp and can receive the light of the lamp bead unit and the ambient light; the method comprises an automatic mode and an active mode:
the automatic formula is as follows: when the constant current unit is a linear constant current unit, the lighting lamp works in alternating current, sawtooth wave voltage is obtained after the alternating current passes through the rectifying unit, and when the rectified voltage reaches the working voltage of the lamp bead unit, the control unit controls the constant current unit to enter a working state, and the lamp bead unit is on; when the rectified voltage is lower than the working voltage of the lamp bead unit, the lamp bead unit is in an off state, the off state time of the lamp bead unit is longer than the response time of the optical sensor unit, the optical sensor unit is used for collecting an environment photoelectric signal, the control unit compares the collected environment photoelectric signal with a set lamp bead unit lamp on-off threshold value, when the collected environment photoelectric signal is lower than the set lamp bead unit lamp on-off threshold value, the control unit judges that the lamp bead unit is in a night state, and the control unit controls the lamp bead unit to be on; when the collected environment photoelectric signal is higher than a set lamp bead unit lamp on-off threshold value, the state is judged to be in the daytime, and the control unit controls the lamp bead unit to be turned off, so that intelligent control is realized;
active mode: when the constant current unit is a nonlinear constant voltage and constant current unit, the control unit controls the working state of the lamp bead unit, when the lamp bead unit is not bright or is slightly bright, the state time is longer than the response time of the photosensitive sensor, and photoelectric signal data received by the optical sensor unit is compared with a set lamp switching threshold value to judge the ambient light illumination and realize intelligent control.
Further, when the control method is active, and the constant current unit is a non-isolated constant voltage and constant current unit or an isolated constant voltage and constant current unit, the method for judging the ambient brightness by using the lamp switching threshold value can be further divided into:
1) the lighting lamp works in alternating current, the constant current unit is not provided with a switch pin, the control unit controls the switch of the lamp bead unit through the switch unit, and when the environment photoelectric signal is lower than a switch lamp threshold value, the control unit controls the switch unit to be switched on or switched off to judge the environment light state; when the switch unit is turned off, the lamp bead unit is in an off state, the off state time of the lamp bead unit is set to be longer than the response time of the optical sensor, the control unit compares the collected environment photoelectric signal with the set lamp bead unit lamp on-off threshold value, when the collected environment photoelectric signal is lower than the set lamp bead unit lamp on-off threshold value, the control unit judges that the lamp bead unit is in a night state, and the control unit controls the lamp bead unit to be on; when the collected environment photoelectric signal is higher than a set lamp bead unit lamp on-off threshold value, the state is judged to be a daytime state, and the control unit controls the lamp bead unit to be turned off;
2) when the constant current unit is not provided with a switch pin, the control unit controls the switch unit with the dimming function to dim and switch, and when the ambient photoelectric signal is lower than a switch lamp threshold value, the control unit controls the brightness state of the lamp bead unit by controlling the switch unit to judge ambient illumination data; the lamp bead unit is in a slight-bright state, the time of the slight-bright state of the lamp bead unit is set to be longer than the response time of the optical sensor unit, the control unit compares the collected environment photoelectric signal with a set lamp bead unit lamp on-off threshold value, when the collected environment photoelectric signal is lower than the set lamp bead unit lamp on-off threshold value, the control unit judges that the lamp bead unit is in a night state, and the control unit controls the lamp bead unit to be bright; when the collected environment photoelectric signal is higher than a set lamp bead unit lamp turning-on and turning-off threshold value, the state is judged to be the daytime state, and the control unit controls the lamp bead unit to be turned off;
3) the control unit controls the on-off of the lamp bead unit by controlling the switch pin of the constant current unit, and when the environment photoelectric signal is lower than the switch lamp threshold value, the control unit controls the on-off of the constant current unit to judge the environment illumination data; when the constant current unit is turned off, the lamp bead unit is in a turned-off state, the turned-off state time of the lamp bead unit is set to be longer than the response time of the optical sensor, the control unit compares the collected environment photoelectric signal with the set lamp bead unit lamp turning-on and turning-off threshold value, when the collected environment photoelectric signal is lower than the set lamp bead unit lamp turning-on and turning-off threshold value, the control unit judges that the lamp bead unit is in a night state, and the control unit controls the lamp bead unit to be turned on; when the collected environment photoelectric signal is higher than a set lamp bead unit lamp on-off threshold value, the state is judged to be a daytime state, and the control unit controls the lamp bead unit to be turned off;
4) when the constant current unit is provided with a light adjusting pin, the control unit controls the light adjusting and the switching of the constant current unit, and when the ambient photoelectric signal is lower than a light switching threshold value, the control unit controls the brightness state of the lamp bead unit through the constant current unit to judge ambient light data; the lamp bead unit is in a slight-bright state, the time of the slight-bright state of the lamp bead unit is set to be longer than the response time of the optical sensor unit, the control unit compares the collected environment photoelectric signal with the set lamp bead unit lamp turning-on and turning-off threshold value, when the collected environment photoelectric signal is lower than the set lamp bead unit lamp turning-on and turning-off threshold value, the control unit judges that the lamp bead unit is in a night state, and the control unit controls the lamp bead unit to be bright; when the collected environment photoelectric signal is higher than the set lamp bead unit lamp on-off threshold value, the state in the daytime is judged, and the control unit controls the lamp bead unit to be turned off.
A light controlled energy saving luminaire implementing the method of claim 1, said luminaire comprising:
a rectifying unit: for converting alternating current to direct current;
a constant current unit: the constant current unit is provided with a switch pin or a light adjusting pin and is used for providing constant working current for the lamp bead unit;
a light sensor unit: the lamp is arranged in the lighting lamp, so that the lamp can receive light rays of the lamp bead unit, is used for collecting illuminance, converts the illuminance into an electric signal and provides reference data for the control unit in real time;
a control unit: the constant current unit is used for receiving the illumination electric signal provided by the light sensor unit, comparing the illumination electric signal with a preset lamp switching threshold value and controlling the on-off or brightness and color temperature adjustment of the constant current unit according to a comparison result;
a low-voltage power supply unit: providing electric energy for the control unit and the light sensor unit;
lamp pearl unit: is controlled by the control unit and is used for converting the electric energy into the light energy.
Further, a light-controlled energy-saving luminaire implementing the method of claim 1, said luminaire comprising:
a rectifying unit: for converting alternating current to direct current;
a constant current unit: the constant current unit is a constant current unit without a switch pin or a dimming pin and is used for providing constant working current for the lamp bead unit;
a switch unit: the lamp bead unit is used for receiving the control of the control unit to realize the on-off or dimming of the lamp bead unit;
a light sensor unit: the lamp is arranged in the lighting lamp, so that the lamp can receive light rays of the lamp bead unit, is used for collecting illuminance, is converted into an electric signal and provides reference data for the control unit in real time;
a control unit: the constant current unit is used for receiving the illumination electric signal provided by the optical sensor unit, comparing the illumination electric signal with a preset lamp switching threshold value, and controlling the on-off or brightness and color temperature adjustment of the constant current unit according to the comparison result;
a low-voltage power supply unit: providing electric energy for the control unit and the light sensor unit;
lamp pearl unit: is controlled by the control unit and is used for converting the electric energy into the light energy.
Further, when the constant current unit of the light-operated energy-saving lamp is a linear constant voltage and constant current unit without a switch dimming pin, the light-operated energy-saving lamp comprises:
a rectifying unit: for converting alternating current to direct current;
a constant current unit: the lamp bead unit is used for providing constant working current for the lamp bead unit;
a switch unit: the lamp bead unit is used for receiving the control of the control unit to realize the on-off or dimming of the lamp bead unit; a light sensor unit: the lamp is arranged in the lighting lamp, so that the lamp can receive light rays of the lamp bead unit, is used for collecting illuminance, converts the illuminance into an electric signal and provides reference data for the control unit in real time;
a control unit: the constant current unit is used for receiving the illumination electric signal provided by the optical sensor unit, comparing the illumination electric signal with a preset lamp switching threshold value, and controlling the on-off or brightness and color temperature adjustment of the constant current unit according to the comparison result;
a low-voltage power supply unit: providing electric energy for the control unit and the light sensor unit;
lamp pearl unit: is controlled by the control unit and is used for converting the electric energy into the light energy.
Further, when the constant current unit of the light-operated energy-saving lamp is a linear constant voltage and constant current unit with a switch dimming pin, the light-operated energy-saving lamp comprises:
a rectifying unit: for converting alternating current to direct current;
a constant current unit: the lamp bead unit is used for providing constant working current for the lamp bead unit;
a light sensor unit: the lamp is arranged in the lighting lamp, so that the lamp can receive light rays of the lamp bead unit, is used for collecting illuminance, converts the illuminance into an electric signal and provides reference data for the control unit in real time;
a control unit: the constant current unit is used for receiving the illumination electric signal provided by the optical sensor unit, comparing the illumination electric signal with a preset lamp switching threshold value, and controlling the on-off or brightness and color temperature adjustment of the constant current unit according to the comparison result;
a low-voltage power supply unit: providing electric energy for the control unit and the light sensor unit;
lamp pearl unit: is controlled by the control unit and is used for converting the electric energy into the light energy.
Further, the light-operated energy-saving lamp further comprises a sensing unit for sensing the change of the surrounding environment.
Furthermore, the light-operated energy-saving lamp further comprises a lamp bead switching and adjusting unit, a high brightness switch unit and a low brightness switch unit which are connected in parallel.
The invention has the technical advantages of simple circuit structure, low device cost, accurate judgment of ambient brightness and less interference from the outside.
Description of the drawings:
FIG. 1 is a schematic block diagram of an automatic light control method for determining ambient brightness using a light switch threshold according to the present invention;
FIG. 2 is a software schematic block diagram of an automatic light control method for determining ambient brightness using a light on/off threshold according to the present invention;
FIG. 3 is a circuit diagram of an embodiment of an automatic light control method for determining ambient brightness using a light-on/off threshold according to the present invention;
FIG. 4 is a schematic circuit diagram of an active light control method for determining ambient brightness using an on/off light threshold according to the present invention;
FIG. 5 is a schematic software block diagram of an active light control method for determining ambient brightness using an on/off light threshold according to the present invention;
FIG. 6 is a circuit diagram of an embodiment of an active light control method for determining ambient brightness by using a lamp switching threshold according to the present invention, in which a constant current unit does not have a switching pin or a dimming pin, and a switching unit does not have a dimming function;
FIG. 7 is a schematic block diagram of an active light control method for determining ambient brightness using an on/off light threshold according to the present invention;
FIG. 8 is a software schematic block diagram of an active light control method for determining ambient brightness using an on/off light threshold according to the present invention;
fig. 9 is a circuit diagram of an embodiment of an active light control method for determining ambient brightness by using a lamp switching threshold according to the present invention, in which a constant current unit does not have a switch pin or a dimming pin, and a switch unit has a dimming function;
FIG. 10 is a schematic block diagram of an active light control method for determining ambient brightness using an on/off light threshold according to the present invention;
FIG. 11 is a software schematic block diagram of an active light control method for determining ambient brightness using a light on/off threshold according to the present invention;
fig. 12 is a circuit diagram of a specific embodiment of an active light control method for determining ambient brightness by using a switch light threshold according to the present invention, in which a constant current unit has a switch pin and does not have a dimming pin;
FIG. 13 is a schematic block diagram of an automatic light control method for determining ambient brightness using a light on/off threshold according to the present invention;
FIG. 14 is a software schematic block diagram of an automatic light control method for determining ambient brightness using a light on/off threshold according to the present invention;
fig. 15 is a circuit diagram of an embodiment of a linear circuit of the automatic light control method for determining ambient brightness by using a switch light threshold according to the present invention, in which the constant current unit is not provided with a switch pin and a dimming pin, and is provided with a high-low brightness switch unit.
The specific implementation method comprises the following steps:
a light control method for judging ambient brightness by utilizing a lamp bead on-off threshold value comprises a rectifying unit, a constant current unit, a light sensor unit, a control unit, a low-voltage power supply unit and a lamp bead unit, wherein the light sensor unit is arranged in a lighting lamp and can receive light rays of the lamp bead unit and ambient light rays; the method comprises an automatic mode and an active mode:
the automatic formula is as follows: when the constant current unit is a linear constant voltage and constant current unit, the lighting lamp works on 50Hz/60Hz alternating current, 100Hz/120Hz sawtooth wave voltage is obtained after the alternating current passes through the rectifying unit, when the rectified voltage reaches the working voltage of the lamp bead unit, the control unit controls the constant current unit to enter a working state, and the lamp bead unit is on; when the rectified voltage is lower than the working voltage of the lamp bead unit, the lamp bead unit is in a turned-off state, the turned-off state time of the lamp bead unit reaches 1ms and is longer than the response time of the optical sensor unit, which is shorter than 100us, so the technology can collect the environment photoelectric signal through the optical sensor unit within 1ms of the turned-off state of the lamp bead unit, the control unit compares the collected environment photoelectric signal with the set lamp bead unit on-off threshold value, when the collected environment photoelectric signal is lower than the set lamp bead unit on-off threshold value, the control unit judges the state at night, and controls the lamp bead unit to be on. When the collected environment photoelectric signal is higher than the set lamp bead unit lamp on-off threshold value, the state in the daytime is judged, and the control unit controls the lamp bead unit to be closed, so that intelligent control is realized. The environment judgment of the technology is that the control unit controls the short extinguishing state of the lamp bead unit for 1ms, and the optical sensor unit collects an environment photoelectric signal to compare with a lamp turning-on and turning-off threshold value, so that the day or night is judged; in the judging process, the 50Hz/60Hz frequency of the alternating current power grid is higher than the identification frequency of human eyes, so that active identification in daytime and at night under the condition of not influencing normal illumination use can be realized.
Active mode: when the constant current unit is a nonlinear constant voltage and constant current unit, the control unit controls the working state electric signal data of the lamp bead unit which is not bright or slightly bright to be compared with the environment photoelectric signal data received by the light sensor unit so as to judge the environment illuminance and realize intelligent control.
Active mode: when the constant current unit is a nonlinear constant voltage and constant current unit, the control unit controls the working state of the lamp bead unit, when the lamp bead unit is not bright or is slightly bright, the state time is longer than the response time of the photosensitive sensor, and photoelectric signal data received by the optical sensor unit is compared with a set lamp switching threshold value to judge the ambient light illumination and realize intelligent control.
In the present technology, when the control method is active, the constant current unit is a non-isolated constant voltage and constant current unit or an isolated constant voltage and constant current unit, and the method can be further divided into:
1) the lighting lamp works on alternating current, a switch unit controlled by a control unit is arranged in the circuit, when the lighting lamp is in a night state, namely an environment photoelectric signal is lower than a lamp switching threshold value, the control unit is set every 1 second, and the switch unit is controlled to be switched on or switched off to judge the environment light state; when the switch unit is turned off, the lamp bead unit is in a turned-off state, the turned-off state time of the lamp bead unit is set to be longer than the response time of the optical sensor, the control unit compares the collected environment photoelectric signal with the set lamp bead unit lamp turning-on and turning-off threshold value, when the collected environment photoelectric signal is lower than the set lamp bead unit lamp turning-on and turning-off threshold value, the control unit judges that the lamp bead unit is in a night state, and the control unit controls the lamp bead unit to be turned on; when the collected environment photoelectric signal is higher than a set lamp bead unit lamp on-off threshold value, the state is judged to be a daytime state, and the control unit controls the lamp bead unit to be turned off;
2) the lighting lamp works on alternating current, a switch unit with a dimming function and controlled by the control unit is arranged in the circuit, the control unit is set to control the switch unit to be switched on every 1 second at night, and the brightness states of the lamp bead units, such as no-light, slight-light and light, are controlled to judge ambient illumination data; the lamp bead unit is in a slight-bright state, the illumination data at the moment is lower than the lamp switching threshold value data, the slight-bright state time of the lamp bead unit is set to be longer than the response time of the optical sensor unit, the control unit compares the collected environment photoelectric signal with the set lamp bead unit lamp switching threshold value, when the collected environment photoelectric signal is lower than the set lamp bead unit lamp switching threshold value, the control unit judges that the lamp bead unit is in a night state, and the control unit controls the lamp bead unit to be on; when the collected environment photoelectric signal is higher than a set lamp bead unit lamp on-off threshold value, the state is judged to be a daytime state, and the control unit controls the lamp bead unit to be turned off;
3) when the constant current unit is provided with a switch pin and an enabling pin commonly known in the industry, the control unit is used for controlling the switch pin of the constant current unit, and at night, the environment photoelectric signal is lower than a switch lamp threshold value, and the control unit is set to control the on-off of the constant current unit every 20min to judge the environment illumination data; when the constant current unit is turned off, the lamp bead unit is in a turned-off state, the turned-off state time of the lamp bead unit is set to be longer than the response time of the optical sensor, the control unit compares the collected environment photoelectric signal with the set lamp bead unit lamp turning-on and turning-off threshold value, when the collected environment photoelectric signal is lower than the set lamp bead unit lamp turning-on and turning-off threshold value, the control unit judges that the lamp bead unit is in a night state, and the control unit controls the lamp bead unit to be turned on; when the collected environment photoelectric signal is higher than a set lamp bead unit lamp on-off threshold value, the state is judged to be a daytime state, and the control unit controls the lamp bead unit to be turned off;
4) when the constant current unit is provided with a dimming pin, the dimming pin of the constant current unit is controlled by the control unit to control the constant current unit to be turned off and dimmed, the control unit is set to control the on-time of the constant current unit or the on-time of the constant current unit at intervals of 20min at night, and the non-bright, slightly-bright and bright brightness states of the lamp bead unit are controlled to judge the ambient illumination data; the lamp bead unit is in a slight-bright state, the time of the slight-bright state of the lamp bead unit is set to be longer than the response time of the optical sensor unit, the control unit compares the collected environment photoelectric signal with a set lamp bead unit lamp on-off threshold value, when the collected environment photoelectric signal is lower than the set lamp bead unit lamp on-off threshold value, the control unit judges that the lamp bead unit is in a night state, and the control unit controls the lamp bead unit to be bright; when the collected environment photoelectric signal is higher than the set lamp bead unit lamp on-off threshold value, the state in the daytime is judged, and the control unit controls the lamp bead unit to be turned off.
as shown in fig. 1, a basic circuit block diagram of the energy saving lamp includes:
a rectifying unit: for converting alternating current to direct current;
a constant current unit: the constant current unit is a linear constant voltage and constant current unit and is used for providing constant working current for the lamp bead unit;
a light sensor unit: the lamp is arranged in the lighting lamp, so that the lamp can receive light rays of the lamp bead unit, is used for collecting illuminance, is converted into an electric signal and provides reference data for the control unit in real time;
a control unit: the constant current unit is used for receiving the illumination electric signal provided by the optical sensor unit, comparing the illumination electric signal with a preset lamp switching threshold value, and controlling the on-off or brightness and color temperature adjustment of the constant current unit according to the comparison result;
a low-voltage power supply unit: providing electric energy for the control unit and the light sensor unit;
lamp pearl unit: is controlled by the control unit and is used for converting the electric energy into the light energy.
The working process of the circuit block diagram is as follows: the 85-264V 50/60Hz alternating current outputs high-voltage sawtooth wave voltage through a rectifying circuit, and the high-voltage sawtooth wave voltage respectively reaches a constant current unit and is lower than a power supply unit; the constant current unit is respectively connected with the lamp bead unit and the control unit, and the low-voltage power supply unit outputs 5V voltage to the control unit and the light sensor unit respectively. The control unit identifies the day and night by judging the output signal of the optical sensor unit. If in daytime, the control unit outputs a control signal to control the constant current unit to be turned off, so that the lamp bead unit is turned off. If at night, the control unit outputs a control signal to control the constant current unit to be turned on, so that the lamp bead unit is turned on.
As shown in fig. 2, it is a software block diagram of the embodiment 1, and its specific logic relationship is that the optical sensor unit outputs a TTL level signal, and the control unit outputs a PWM signal with an adjustable duty ratio and a frequency of 1 KHz. The light sensor unit receives the illumination signal, converts the illumination signal into an electric signal, compares the electric signal with a set light on-off threshold value, converts the electric signal into a high-low level signal, outputs the low level signal when the ambient illumination value is larger than the set light on-off threshold value, the control unit judges that the current state is the daytime state, outputs the high level signal when the ambient illumination value is smaller than the set light on-off threshold value, and judges that the current state is the night state.
The judging process of the control unit in this embodiment 1 at day and night is as follows:
and (3) judging in the daytime: the lamp pearl unit of daytime state extinguishes, and the control unit detects the low level signal of light sensor unit output, and the control unit outputs the PWM signal of 0% duty cycle.
Judging at night: the lamp bead unit is on at night, the control unit judges the signal output by the optical sensor unit every 50us, if the optical sensor unit outputs high level time lasting 500us, the control unit outputs 100% duty ratio signal. The control unit judges the output signal of the optical sensor unit every 50us, and if the output signal of the optical sensor unit is low level for 200ms, the control unit judges the state is in the daytime. Because the circuit topology is a linear stroboscopic structure, the stroboscopic frequency is twice of the frequency of an alternating current power grid, namely 100Hz or 120Hz, the frequency is higher than the human eye identification frequency, the circuit detects the ambient illumination state by using stroboscopic time, and the detection is realized while the illumination is not influenced.
As shown in fig. 3, a specific circuit diagram of this embodiment 1 is shown, and its specific working process is:
alternating current 85-264V 50/60Hz is output to the input end of the rectifier bridge through a fuse F1, the rectifier circuit outputs high-voltage sawtooth waves HV, the low-voltage power supply unit reduces voltage through R6 and R7, ZD1 stabilizes the voltage to obtain +5V voltage, and the +5V voltage supplies power to the control unit and the light sensor unit. HV voltage is connected to the lamp bead unit to supply power to the lamp bead unit, the LED-signal of the lamp bead unit is connected to the OUT pin of the constant current unit, and the lamp bead unit realizes constant current output through the constant current unit. The phototriode VT1 of daytime state light sensor unit switches on, and when VBE voltage was greater than and closes the lamp threshold 0.7V, triode Q1 is just inclined towards the side, and SIG2 is the low level, and the control unit output 0% duty cycle signal to the constant current unit, realizes that daytime lamp pearl unit goes out. The phototriode VT1 of state light sensor unit lasts 500us and ends, reaches 500us when VBE voltage is less than the 0.7V duration of the threshold value of turning on light, triode Q1 ends, and SIG2 is the high level, and the control unit outputs 100% duty cycle signal to the constant current unit, realizes that lamp pearl unit is bright night.
a rectifying unit: for converting alternating current to direct current;
a constant current unit: the lamp bead unit is used for providing constant working current for the lamp bead unit;
a light sensor unit: the lamp is arranged in the lighting lamp, so that the lamp can receive light rays of the lamp bead unit, is used for collecting illuminance, converts the illuminance into an electric signal and provides reference data for the control unit in real time;
a control unit: the constant current unit is used for receiving the illumination electric signal provided by the optical sensor unit, comparing the illumination electric signal with a preset lamp switching threshold value, and controlling the on-off or brightness and color temperature adjustment of the constant current unit according to the comparison result;
a low-voltage power supply unit: providing electric energy for the control unit and the light sensor unit;
a switch unit: the lamp bead unit is used for receiving the control of the control unit to realize the on-off or dimming of the lamp bead unit;
lamp pearl unit: is controlled by the control unit and is used for converting the electric energy into the light energy.
The working process of the circuit block diagram is as follows: the 85-264V 50/60Hz alternating current is output to the rectifying circuit, and the rectifying circuit outputs high-voltage sawtooth wave voltage to the lamp bead unit and the voltage reduction unit respectively. The lamp bead unit outputs the constant current unit. The constant current unit outputs to the switching unit. The low-voltage power supply unit outputs 5V voltage to the control unit and the light sensor unit respectively. The control unit identifies the day and night by judging the output signal of the optical sensor unit. If daytime, the control unit outputs a low level signal to the switch unit to turn off the lamp bead unit, and if night, the control unit outputs a high level signal to the switch unit to turn on the lamp bead unit.
As shown in fig. 5, it is a software block diagram of the embodiment 2, and its specific logic relationship is that the optical sensor unit outputs a TTL level signal, and the control unit outputs a TTL high-low level signal. The light sensor unit receives the illumination information, converts the illumination signal into an electric signal, compares the electric signal with a set illumination threshold value of a switch lamp, converts the electric signal into a high-low level signal, outputs a low level signal when the ambient illumination value is larger than the set illumination threshold value of the switch lamp, and judges that the current state is in the daytime. When the ambient illumination value is smaller than the set lighting illumination threshold value, a high level signal is output, and the control unit judges that the current state is the night state.
The judging process of the control unit in this embodiment 2 at day and night is as follows:
judging in the daytime: the lamp pearl unit of state daytime is extinguished, and the control unit detects the output low level signal of light sensor unit, and the control unit output low level signal is to the switch unit.
Judging at night: the lamp bead unit is on at night, the control unit outputs 200us low level signals to the switch unit every 1S, the lamp bead unit is turned off for 200us, the response time of the optical sensor unit is less than 100us, the control unit starts to judge the output signals of the optical sensor unit after delaying for 100us, if the output of the optical sensor unit is a low level signal, the lamp bead unit is turned off in daytime. If the output of the optical sensor is a high level signal, the state is judged to be a night state, and the lamp bead unit is on. Since the extinguishing time of 200us is shorter than the human eye recognition time, the lighting use is not affected when the light is turned off.
As shown in fig. 6, a specific circuit diagram of this embodiment 2 is shown, and the specific working process thereof is as follows:
alternating current 85-264V 50/60Hz is output to the input end of the rectifier bridge through a fuse F1, direct current HV is output by the rectifier circuit, voltage of the low-voltage power supply unit is reduced through R6 and R7, voltage of ZD1 is stabilized to obtain +5V voltage, and the +5V voltage supplies power to the control unit and the light sensor unit. HV voltage is connected with a constant current unit to supply power for the constant current of the lamp, the V + signal of the constant current unit is connected with an LED1 of a lamp bead unit, and the LED-is output to the 3 rd pin of the switch unit AO3400 by the lamp bead unit LEDn. The phototriode VT1 of state light sensor unit switches on daytime, and when VBE voltage was greater than and closes lamp threshold 0.7V, triode Q1 is just inclined towards the side, and SIG2 is the low level, and the control unit output low level signal arrives the switch unit, realizes that lamp pearl unit extinguishes daytime. At night: because the control unit outputs 200us low level signals to the switch unit every 1S, the lamp bead unit is turned off for 200us, the response time of the phototriode VT1 is less than 100us, after 100us, if the phototriode VT1 is conducted, the VBE voltage is more than 0.7V of a lamp-turning-off threshold value, the SIG2 is low level, and the control unit judges that the lamp is in a daytime state and turns off the lamp. If the phototriode VT1 is cut off, the VBE voltage is lower than the light-on threshold value, the SIG2 voltage is high, the control unit judges that the lamp is in a night state, and the lamp is on.
Embodiment 3, an active light control method and circuit for determining ambient brightness by using a switch light threshold, as shown in fig. 7, is a circuit block diagram of a lamp in which a constant current unit is a nonlinear circuit structure without a switch pin, and includes:
a rectifying unit: for converting alternating current to direct current;
a constant current unit: the lamp bead unit is used for providing constant working current for the lamp bead unit;
a light sensor unit: the lamp is arranged in the lighting lamp, so that the lamp can receive light rays of the lamp bead unit, is used for collecting illuminance, converts the illuminance into an electric signal and provides reference data for the control unit in real time;
the induction unit: the lamp is used for sensing the change of the surrounding environment of the lamp; the sensing unit can be various sensors such as microwave, infrared and sound control;
a control unit: the constant current unit is used for receiving the illumination electric signal provided by the optical sensor unit, comparing the illumination electric signal with a preset lamp switching threshold value, and controlling the on-off or brightness and color temperature adjustment of the constant current unit according to the comparison result;
a low-voltage power supply unit: providing electric energy for the control unit and the light sensor unit;
a switching unit: the lamp bead unit is used for receiving the control of the control unit to realize the on-off or dimming of the lamp bead unit;
lamp pearl unit: is controlled by the control unit and is used for converting the electric energy into the light energy.
The working process of the circuit block diagram is as follows: the 85-264V 50/60Hz alternating current is output to the rectifying circuit, the rectifying circuit outputs direct current to the constant current unit, and the constant current unit outputs direct current to the low-voltage power supply unit and the lamp bead unit respectively. The lamp bead unit outputs to the switch unit. The low-voltage power supply unit outputs the low-voltage power supply to the sensing unit, the light sensor unit and the control unit. The sensing unit and the optical sensor unit output signals to the control unit. The control unit outputs a PWM signal to the switching unit. The control unit identifies the day and night by judging the output signal of the optical sensor unit. If the lamp bulb is turned off at night, the control unit outputs 1% -100% duty ratio signals to the switch unit to turn on the lamp bulb unit. At night, the control unit judges the output signal of the induction unit to realize dimming control, the induction unit outputs a low level signal, the control unit judges that the person is not present, and outputs a 20% duty ratio signal to realize that the person is low and bright. The induction unit outputs a high level signal, the control unit judges that a person exists, and outputs a 30S 100% duty ratio signal to realize highlight of the person.
As shown in fig. 8, it is a software block diagram of the embodiment 3, and its specific logic relationship is: the optical sensor unit and the induction unit output TTL level signals, and the control unit outputs PWM signals. The light sensor unit receives the illumination information, converts the illumination signal into an electric signal, compares the electric signal with a set light on/off threshold value, converts the electric signal into a high-low level signal, outputs the low level signal when the ambient illumination value is larger than the set light on/off threshold value, and judges that the current state is the daytime state by the control unit. And when the ambient light value is smaller than the set light on-off threshold value, outputting a high level signal. The control unit determines that the night state is present. When the night state is in, the sensing unit outputs a low level signal, the control unit judges that no person exists, outputs a 20% duty ratio signal to realize that no person exists and low light exists, the sensing unit outputs a high level signal, the control unit judges that a person exists, outputs a 30S 100% duty ratio signal to realize that the person comes and high light exists.
The judging process of the control unit in this embodiment 3 at day and night is as follows:
judging in the daytime: the lamp pearl unit of state daytime is extinguished, and the control unit detects the output low level signal of light sensor unit, and the control unit output low level signal is to the switch unit. Judging at night: the lamp bead unit is on at night, the control unit outputs PWM signals with duty ratio of 3% at intervals of 1S to the switch unit, the light-on time of the lamp bead unit is less than 200us, the response time of the light sensor unit is less than 100us, the illumination threshold value is lower than the set light-on and light-off threshold value when the light sensor unit is on slightly, the control unit starts to judge the output signals of the light sensor unit after delaying 100us, if the output signals of the light sensor unit are low level signals, the light sensor unit is judged to be in a daytime state, and the lamp bead unit is turned off. If the output of the optical sensor is a high level signal, the state is judged to be a night state, and the lamp bead unit is on. Since the duty ratio of 3% of 200us is shorter than the human eye recognition time, the illumination use is not affected even in the case of the bright judgment.
As shown in fig. 9, a specific circuit diagram of this embodiment 3 is shown, and the specific working process thereof is as follows: alternating current 85-264V 50/60Hz is output to the input end of the rectifier bridge through a fuse F1, and the rectifier unit outputs direct current HV to supply power to the constant current unit. And the constant current unit outputs VDC voltage to supply power to the lamp bead unit and the low-voltage power supply unit respectively. The low-voltage power supply unit reduces the voltage through R9 and R10, ZD1 stabilizes the voltage to obtain +5V voltage, and the +5V voltage supplies power to the control unit, the light sensor unit and the induction unit. The lamp pearl unit exports the third foot of switching element AO3400, and the phototriode VT1 of state light sensor unit switches on daytime, and when VBE voltage was greater than and closes the lamp threshold 0.7V, triode Q1 is just inclined to one side, and SIG2 is the low level, and the control unit exports low level signal to the switching element, realizes that the lamp pearl unit extinguishes daytime. At night: because the control unit outputs a signal with a duty ratio of 3% at intervals of 1S to the switch unit, the lamp bead unit is slightly lightened by 200us, the response time of the phototriode VT1 is less than 100us, after 100us, if the phototriode VT1 is conducted, the VBE voltage is greater than a lamp turn-off threshold value by 0.7V, the SIG2 is at a low level, the control unit judges that the lamp bead unit is in a daytime state, and the lamp bead unit is turned off. If phototriode VT1 ends, VBE voltage is less than the threshold of turning on light, SIG2 voltage is high, and the control unit judges to be the night state, and the lamp pearl unit is bright. When the night state is in, the sensing unit outputs a low level signal, the control unit judges that no person exists, outputs a 20% duty ratio signal to realize that no person exists and low light exists, the sensing unit outputs a high level signal, the control unit judges that a person exists, outputs a 30S 100% duty ratio signal to realize that the person comes and high light exists.
Embodiment 4 is a circuit block diagram of an active light control method for determining ambient brightness by using a lamp switching threshold, where the circuit block diagram is shown in fig. 10, and is a circuit block diagram of a lamp having a constant current unit, a switch of which is provided, and the lamp has a nonlinear circuit structure without dimming, and the circuit block diagram includes:
a rectifying unit: for converting alternating current to direct current;
a constant current unit: the lamp bead unit is used for providing constant working current for the lamp bead unit;
a light sensor unit: the lamp is arranged in the lighting lamp, so that the lamp can receive light rays of the lamp bead unit, is used for collecting illuminance, converts the illuminance into an electric signal and provides reference data for the control unit in real time;
a control unit: the constant current unit is used for receiving the illumination electric signal provided by the optical sensor unit, comparing the illumination electric signal with a preset lamp switching threshold value, and controlling the on-off or brightness and color temperature adjustment of the constant current unit according to the comparison result;
a low-voltage power supply unit: providing electric energy for the control unit and the light sensor unit;
lamp pearl unit: is controlled by the control unit and is used for converting the electric energy into the light energy.
The working process of the circuit block diagram is as follows: the 85-264V 50/60Hz alternating current is output to the rectifying circuit, and the rectifying circuit outputs direct current to the lamp bead unit and the low-voltage power supply unit respectively. The lamp bead unit outputs the constant current unit. The low-voltage power supply unit outputs 5V voltage to the control unit and the light sensor unit respectively. The control unit identifies the day and night by judging the output signal of the optical sensor unit. If the lamp is in the daytime, the control unit outputs a low level signal to the constant current unit to turn off the lamp bead unit, and if the lamp is in the nighttime, the control unit outputs a high level signal to the constant current unit to turn on the lamp bead unit.
As shown in fig. 11, it is a software block diagram of the embodiment 4, and its specific logic relationship is: the optical sensor unit and the control unit output TTL electric level signals. The light sensor unit receives the illumination information, converts the illumination signal into an electric signal, compares the electric signal with a set light-on and light-off illumination threshold value, converts the electric signal into a high-low level signal, outputs the low level signal when the ambient illumination value is larger than the set light-on and light-off illumination threshold value, and judges that the current state is the daytime state. And when the ambient illumination value is smaller than the set lighting illumination threshold value, outputting a high level signal. The control unit determines that the night state is present.
The judging process of the control unit in this embodiment 4 at day and night is as follows:
judging in the daytime: the lamp bead unit is extinguished in the daytime, the control unit detects that the optical sensor unit outputs a low level signal, and the control unit outputs the low level signal to the constant current unit.
Judging at night: the lamp bead unit is on at night, the control unit outputs a low level signal of 200ms to the constant current unit every 20min, the lamp bead unit is off, after the constant current unit is turned off, the electrolytic capacitor connected in parallel with the lamp bead discharges to continuously maintain the time for the lamp bead unit to be on to be less than 150ms, the response time of the optical sensor unit is less than 100us, the control unit starts to judge the output signal of the optical sensor unit after the time delay of 160ms, if the output of the optical sensor unit is the low level signal, the daytime state is judged, and the lamp bead unit is off. If the output of the optical sensor is a high level signal, the state is judged to be a night state, and the lamp bead unit is on.
As shown in fig. 12, a specific circuit diagram of this embodiment 4 is shown, and the working process thereof is as follows: alternating current 85-264V 50/60Hz is output to the input end of the rectifier bridge through a protective tube F1, and direct current HV output by the rectifier circuit supplies power to the constant current unit and the low-voltage power supply unit respectively. The lamp bead unit outputs LED-to-L1 of the constant current unit. The 5V voltage is reduced through R9 and R10, ZD1 is stabilized to obtain +5V voltage, and the +5V voltage supplies power to the control unit and the light sensor unit. The phototriode VT1 of daytime state light sensor unit switches on, and when VBE voltage was greater than and closes lamp threshold 0.7V, triode Q1 is just inclined towards the side, and SIG2 is the low level, and the control unit output high level signal reaches the constant current unit, realizes that daytime lamp pearl unit extinguishes. At night: because the control unit outputs a low level signal of 200ms to the constant current unit every 20min, the extinguishing time of the lamp bead unit is less than 200ms, the response time of the phototriode VT1 is less than 100us, after 150ms, if the phototriode VT1 is conducted, the VBE voltage is greater than the lamp-off threshold value by 0.7V, the SIG2 is at a low level, the control unit judges that the lamp bead unit is in a daytime state, and the lamp bead unit is extinguished. If phototriode VT1 is cut off, VBE voltage is less than the threshold of turning on light, SIG2 voltage is high, and the control unit judges to be night state, and the lamp pearl unit is bright.
as shown in fig. 13, a basic circuit block diagram of the energy saving lamp includes:
a rectifying unit: for converting alternating current to direct current;
a constant current unit: the constant current unit is a linear constant current unit and is used for providing constant working current for the lamp bead unit;
a light sensor unit: the lamp is arranged in the lighting lamp, so that the lamp can receive light rays of the lamp bead unit, is used for collecting illuminance, converts the illuminance into an electric signal and provides reference data for the control unit in real time;
the induction unit: the lamp is used for sensing the change of the surrounding environment of the lamp;
a highlight switch unit: the control unit is used for receiving control of the control unit to realize highlight of the lamp bead units at night;
low bright switch unit: the lamp bead control unit is used for receiving the control of the control unit to realize the low brightness of the unmanned lamp bead unit at night;
a control unit: the constant current unit is used for receiving the illumination electric signal provided by the optical sensor unit, comparing the illumination electric signal with a preset lamp switching threshold value, and controlling the on-off or brightness and color temperature adjustment of the constant current unit according to the comparison result;
a low-voltage power supply unit: providing electric energy for the control unit and the light sensor unit;
lamp pearl unit: is controlled by the control unit and is used for converting the electric energy into the light energy.
The working process of the circuit block diagram is as follows: the 85-264V 50/60Hz alternating current outputs high-voltage sawtooth wave voltage through the rectifying circuit and respectively enters the lamp bead unit and the low-voltage power supply unit; the lamp bead unit is connected to the constant current unit, and the constant current unit outputs to the high brightness switch unit and the low brightness switch unit. The low-voltage power supply unit outputs 5V voltage to the control unit, the light sensor unit and the induction unit respectively. The control unit identifies the day and night by judging the output signal of the optical sensor unit. If in daytime, the control unit outputs a control signal to control the high-brightness switch unit and the low-brightness switch unit to be turned off, so that the lamp bead unit is turned off. If at night, the control unit outputs a control signal to control the high-brightness switch unit and the low-brightness switch unit to be turned on, so that the lamp bead unit is on.
As shown in fig. 14, a software block diagram of the present embodiment 5 is provided, and the specific logic relationship is that the optical sensor unit outputs a TTL level signal, and the control unit outputs HIGH and LOW level LOW and HIGH level signals to the LOW bright switch unit and the HIGH bright switch unit, respectively. The light sensor unit receives the illumination signal, converts the illumination signal into an electric signal, compares the electric signal with a set light on-off threshold value, converts the electric signal into a high-low level signal, outputs the low level signal when the ambient illumination value is larger than the set light on-off threshold value, the control unit judges that the current state is the daytime state, outputs the high level signal when the ambient illumination value is smaller than the set light on-off threshold value, and judges that the current state is the night state.
The judging process of the control unit in this embodiment 5 at day and night is as follows:
judging in the daytime: in daytime, the lamp bead unit is turned off, the control unit detects that the optical sensor unit outputs LOW-level signals, and the control unit outputs LOW-level and HIGH-level signals to the LOW-brightness switch unit and the HIGH-brightness switch unit respectively.
Judging at night: the lamp bead unit is on at night, the control unit judges the signal output by the optical sensor unit every 50us, if the optical sensor unit outputs HIGH level for 500us, the control unit outputs HIGH level LOW and HIGH signals to the LOW-brightness switch unit and the HIGH-brightness switch unit respectively. The control unit judges the output signal of the optical sensor unit every 50us, and if the output signal of the optical sensor unit is low level for 200ms, the control unit judges the state is in the daytime. Because the circuit topology is a linear stroboscopic structure, the stroboscopic frequency is twice of the frequency of an alternating current power grid, namely 100Hz or 120Hz, the frequency is higher than the human eye identification frequency, the circuit detects the ambient illumination state by using stroboscopic time, and the detection is realized while the illumination is not influenced.
As shown in fig. 15, a specific circuit diagram of this embodiment 5 is shown, and its specific working process is as follows:
alternating current 85-264V 50/60Hz is output to the input end of the rectifier bridge through a fuse F1, the rectifier circuit outputs high-voltage sawtooth waves HV, the low-voltage power supply unit reduces voltage through R6 and R7, ZD1 stabilizes the voltage to obtain +5V voltage, and the +5V voltage supplies power to the control unit, the light sensor unit and the induction unit. HV voltage is connected to the lamp pearl unit, supplies power for the lamp pearl unit, and the LED-signal connection of lamp pearl unit is to the OUT foot of constant current unit U3, U4, and the lamp pearl unit realizes the constant current output through the constant current unit, and the constant current unit output OUT1, OUT2 signal respectively to the Q2 of highlight switch unit, the Q3 of low bright switch unit. The phototriode VT1 of state light sensor unit switches on daytime, and when VBE voltage was greater than and closes the lamp threshold 0.7V, triode Q1 is just inclined towards the side, and SIG2 is the LOW level, and the control unit output LOW level LOW, the HIGH signal reaches the switch unit, realizes that lamp pearl unit extinguishes daytime. The phototriode VT1 of the light sensor unit is cut off continuously for 500us at night, when the VBE voltage is less than the light-on threshold value for 0.7V, the duration time reaches 500us, the phototriode Q1 is cut off, the SIG2 is at a HIGH level, if the induction unit outputs a LOW level signal, the control unit judges that the surrounding environment is unmanned, and the control unit outputs a LOW level HIGH signal and a HIGH level LOW signal to the HIGH-brightness switch unit and the LOW-brightness switch unit respectively to realize the LOW brightness of the unmanned environment; if the sensing unit outputs a HIGH level signal, the control unit judges that the surrounding environment is manned, and the control unit outputs a HIGH level HIGH signal and a HIGH level LOW signal to the HIGH brightness switch unit and the LOW brightness switch unit respectively to realize manned HIGH brightness.
Claims (8)
1. A light control method for judging ambient brightness by utilizing a switch lamp threshold value comprises a rectifying unit, a constant current unit, a light sensor unit, a control unit, a low-voltage power supply unit and a lamp bead unit, and is characterized in that the light sensor unit is arranged in a lighting lamp and can receive light of the lamp bead unit and ambient light; the method comprises an automatic mode and an active mode:
the automatic formula is as follows: when the constant current unit is a linear constant current unit, the lighting lamp works in alternating current, sawtooth wave voltage is obtained after the alternating current passes through the rectifying unit, and when the rectified voltage reaches the working voltage of the lamp bead unit, the control unit controls the constant current unit to enter a working state, and the lamp bead unit is on; when the rectified voltage is lower than the working voltage of the lamp bead unit, the lamp bead unit is in an off state, the off state time of the lamp bead unit is longer than the response time of the optical sensor unit, the optical sensor unit is used for collecting an environment photoelectric signal, the control unit compares the collected environment photoelectric signal with a set lamp bead unit lamp on-off threshold value, when the collected environment photoelectric signal is lower than the set lamp bead unit lamp on-off threshold value, the control unit judges that the lamp bead unit is in a night state, and the control unit controls the lamp bead unit to be on; when the collected environment photoelectric signal is higher than a set lamp bead unit lamp on-off threshold value, the state is judged to be in the daytime, and the control unit controls the lamp bead unit to be turned off, so that intelligent control is realized;
active mode: when the constant current unit is a nonlinear constant voltage and constant current unit, the control unit controls the working state of the lamp bead unit, when the lamp bead unit is not bright or is slightly bright, the state time is longer than the response time of the photosensitive sensor, and photoelectric signal data received by the optical sensor unit is compared with a set lamp switching threshold value to judge the ambient light illumination and realize intelligent control.
2. The light-operated energy-saving method for judging the ambient brightness by using the light-on/off threshold as claimed in claim 1, wherein when the control method is active, the constant current unit is a non-isolated constant voltage and constant current unit or an isolated constant voltage and constant current unit, which can be divided into:
1) the lighting lamp works in alternating current, the constant current unit is not provided with a switch pin, the control unit controls the switch of the lamp bead unit through the switch unit, and when the environment photoelectric signal is lower than a switch lamp threshold value, the control unit controls the switch unit to be switched on or switched off to judge the environment light state; when the switch unit is turned off, the lamp bead unit is in an off state, the off state time of the lamp bead unit is set to be longer than the response time of the optical sensor, the control unit compares the collected environment photoelectric signal with the set lamp bead unit lamp on-off threshold value, when the collected environment photoelectric signal is lower than the set lamp bead unit lamp on-off threshold value, the control unit judges that the lamp bead unit is in a night state, and the control unit controls the lamp bead unit to be on; when the collected environment photoelectric signal is higher than a set lamp bead unit lamp on-off threshold value, the state is judged to be a daytime state, and the control unit controls the lamp bead unit to be turned off;
2) when the constant current unit is not provided with a switch pin, the control unit controls the switch unit with the dimming function to dim and switch, and when the ambient photoelectric signal is lower than a switch lamp threshold value, the control unit controls the brightness state of the lamp bead unit by controlling the switch unit to judge ambient illumination data; the lamp bead unit is in a slight-bright state, the time of the slight-bright state of the lamp bead unit is set to be longer than the response time of the optical sensor unit, the control unit compares the collected environment photoelectric signal with a set lamp bead unit lamp on-off threshold value, when the collected environment photoelectric signal is lower than the set lamp bead unit lamp on-off threshold value, the control unit judges that the lamp bead unit is in a night state, and the control unit controls the lamp bead unit to be bright; when the collected environment photoelectric signal is higher than a set lamp bead unit lamp on-off threshold value, the state is judged to be a daytime state, and the control unit controls the lamp bead unit to be turned off;
3) the control unit controls the on-off of the lamp bead unit by controlling the switch pin of the constant current unit, and when the environment photoelectric signal is lower than the switch lamp threshold value, the control unit controls the on-off of the constant current unit to judge the environment illumination data; when the constant current unit is turned off, the lamp bead unit is in a turned-off state, the turned-off state time of the lamp bead unit is set to be longer than the response time of the optical sensor, the control unit compares the collected environment photoelectric signal with the set lamp bead unit lamp turning-on and turning-off threshold value, when the collected environment photoelectric signal is lower than the set lamp bead unit lamp turning-on and turning-off threshold value, the control unit judges that the lamp bead unit is in a night state, and the control unit controls the lamp bead unit to be turned on; when the collected environment photoelectric signal is higher than a set lamp bead unit lamp on-off threshold value, the state is judged to be a daytime state, and the control unit controls the lamp bead unit to be turned off;
4) when the constant current unit is provided with a light adjusting pin, the control unit controls the light adjusting and the switching of the constant current unit, and when the ambient photoelectric signal is lower than a light switching threshold value, the control unit controls the brightness state of the lamp bead unit through the constant current unit to judge ambient light data; the lamp bead unit is in a slight-bright state, the time of the slight-bright state of the lamp bead unit is set to be longer than the response time of the optical sensor unit, the control unit compares the collected environment photoelectric signal with a set lamp bead unit lamp on-off threshold value, when the collected environment photoelectric signal is lower than the set lamp bead unit lamp on-off threshold value, the control unit judges that the lamp bead unit is in a night state, and the control unit controls the lamp bead unit to be bright; when the collected environment photoelectric signal is higher than the set lamp bead unit lamp on-off threshold value, the state in the daytime is judged, and the control unit controls the lamp bead unit to be turned off.
3. A light-controlled energy-saving luminaire implementing the method of claim 1, said luminaire comprising:
a rectifying unit: for converting alternating current to direct current;
a constant current unit: the constant current unit is provided with a switch pin or a light adjusting pin and is used for providing constant working current for the lamp bead unit;
a light sensor unit: the lamp is arranged in the lighting lamp, so that the lamp can receive light rays of the lamp bead unit, is used for collecting illuminance, converts the illuminance into an electric signal and provides reference data for the control unit in real time;
a control unit: the constant current unit is used for receiving the illumination electric signal provided by the optical sensor unit, comparing the illumination electric signal with a preset lamp switching threshold value, and controlling the on-off or brightness and color temperature adjustment of the constant current unit according to the comparison result;
a low-voltage power supply unit: providing electric energy for the control unit and the light sensor unit;
lamp pearl unit: is controlled by the control unit and is used for converting the electric energy into the light energy.
4. A light-controlled energy-saving luminaire implementing the method of claim 1, said luminaire comprising:
a rectifying unit: for converting alternating current to direct current;
a constant current unit: the constant current unit is a constant current unit without a switch pin or a dimming pin and is used for providing constant working current for the lamp bead unit;
a switch unit: the lamp bead unit is used for receiving the control of the control unit to realize the on-off or dimming of the lamp bead unit;
a light sensor unit: the lamp is arranged in the lighting lamp, so that the lamp can receive light rays of the lamp bead unit, is used for collecting illuminance, converts the illuminance into an electric signal and provides reference data for the control unit in real time;
a control unit: the constant current unit is used for receiving the illumination electric signal provided by the optical sensor unit, comparing the illumination electric signal with a preset lamp switching threshold value, and controlling the on-off or brightness and color temperature adjustment of the constant current unit according to the comparison result;
a low-voltage power supply unit: providing electric energy for the control unit and the light sensor unit;
lamp pearl unit: is controlled by the control unit and is used for converting the electric energy into the light energy.
5. The light-controlled energy-saving lamp as claimed in claim 4, wherein when the constant current unit of the lamp is a linear constant voltage and constant current unit without a switch dimming pin, the lamp comprises:
a rectifying unit: for converting alternating current to direct current;
a constant current unit: the lamp bead unit is used for providing constant working current for the lamp bead unit;
a switch unit: the lamp bead unit is used for receiving the control of the control unit to realize the on-off or dimming of the lamp bead unit; a light sensor unit: the lamp is arranged in the lighting lamp, so that the lamp can receive light rays of the lamp bead unit, is used for collecting illuminance, converts the illuminance into an electric signal and provides reference data for the control unit in real time;
a control unit: the constant current unit is used for receiving the illumination electric signal provided by the optical sensor unit, comparing the illumination electric signal with a preset lamp switching threshold value, and controlling the on-off or brightness and color temperature adjustment of the constant current unit according to the comparison result;
a low-voltage power supply unit: providing electric energy for the control unit and the light sensor unit;
lamp pearl unit: is controlled by the control unit and is used for converting the electric energy into the light energy.
6. The light-controlled energy-saving lamp as claimed in claim 3, wherein when the constant current unit of the lamp is a linear constant voltage and constant current unit with a switch dimming pin, the lamp comprises:
a rectifying unit: for converting alternating current to direct current;
a constant current unit: the lamp bead unit is used for providing constant working current for the lamp bead unit;
a light sensor unit: the lamp is arranged in the lighting lamp, so that the lamp can receive light rays of the lamp bead unit, is used for collecting illuminance, converts the illuminance into an electric signal and provides reference data for the control unit in real time;
a control unit: the constant current unit is used for receiving the illumination electric signal provided by the optical sensor unit, comparing the illumination electric signal with a preset lamp switching threshold value, and controlling the on-off or brightness and color temperature adjustment of the constant current unit according to the comparison result;
a low-voltage power supply unit: providing electric energy for the control unit and the light sensor unit;
lamp pearl unit: is controlled by the control unit and is used for converting the electric energy into the light energy.
7. A light controlled energy saving light fixture as claimed in claim 3, 4, 5 or 6, further comprising a sensing unit for sensing changes in the ambient environment.
8. The light-operated energy-saving lamp as claimed in claim 3 or 6, further comprising a lamp bead switching and adjusting unit, a high brightness switch unit and a low brightness switch unit connected in parallel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210650072.5A CN114916112A (en) | 2022-06-10 | 2022-06-10 | Light control method for judging ambient brightness by utilizing lamp switching threshold value and lamp |
Applications Claiming Priority (1)
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN115499966A (en) * | 2022-10-26 | 2022-12-20 | 江苏宜美照明科技股份有限公司 | Inductor for taking electricity from tail end of constant-current power supply |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115499966A (en) * | 2022-10-26 | 2022-12-20 | 江苏宜美照明科技股份有限公司 | Inductor for taking electricity from tail end of constant-current power supply |
| CN115499966B (en) * | 2022-10-26 | 2023-10-20 | 江苏宜美照明科技股份有限公司 | Inductor for constant current power supply tail end power taking |
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