Linkable led lighting system designed with an app based free setting method for adjusting operating parameters of at least one led security light

An LED security lighting system including at least one first LED security light, comprising at least:

• a light-emitting unit, including at least a first LED load configured with a plurality of LEDs emitting light with a first color temperature;
• a loading and power control unit;
• a light sensing control unit;
• a motion sensing unit;
• a first wireless remote control device configured with at least a first wireless signal receiver;
• a power supply unit;
• wherein said loading and power control unit comprises a controller and a switching circuitry, wherein said controller is electrically coupled with said light sensing control unit, said motion sensing unit, said switching circuitry and said first wireless remote control device, wherein said switching circuitry is electrically connected in series with a power source of said power supply unit and said light-emitting unit to control and output an electric power delivered to said light-emitting unit, wherein said power source is a DC power outputting a constant current, wherein said switching circuitry comprises at least a first semiconductor switching device, wherein said controller outputs a control signal to control a conduction rate of said switching circuitry for delivering different electric powers from said power source to drive said light-emitting unit for generating different illuminations characterized by different light intensities according to signals respectively received from said light sensing control unit, said motion sensing unit and said wireless remote control device;
• wherein at dusk when said light sensing control unit detects a nighttime signal defined as an ambient light detected by said light sensing control unit being lower than a first predetermined value, said loading and power control unit responsively operates to activate said motion sensing unit with said at least one first LED security light remaining in a turned off state;
• wherein when a motion signal is detected by said motion sensing unit, said controller responsively operates to conduct said switching circuitry to deliver a first electric power to said light-emitting unit to perform a first illumination mode to generate a first level illumination for a first predetermined time duration, wherein a light intensity of said first level illumination is designed in a range being greater than zero but less than or equal to a maximum light intensity designed for said at least one first LED security light;
• wherein at dawn when said light sensing control unit detects a daytime signal defined as said ambient light detected by said light sensing control unit being higher than a second predetermined value, said loading and power control unit respectively operates to switch off said at least one first LED security light;
• wherein said wireless remote control device is electrically coupled with said controller to receive and convert at least one wireless instruction signal into an operating variable interpretable to said controller, wherein said controller further comprises at least one subroutine for processing said operating variable and adjusting a relevant control signal for performing at least one operating parameter according to said operating variable received from said wireless receiver, wherein said operating variable represents a setting decision of a capacity operating rate for each functional performance of each of said operating parameters of said at least one first LED security light by a user thru an APP (software application) loaded in said user's mobile device before being able to use said mobile device and said APP for adjusting and setting at least one operating parameter of said at least one first LED security light, wherein said operating variable is used for controlling at least one lighting characteristic of said at least one first LED security light including time length settings, light intensity settings, color temperature settings, detection range settings, or signal frequency range or signal format settings for screening, accepting, responding and processing said wireless instruction signal(s) characterized by the same signal frequency range or the same signal format;
• wherein a configuration of said plurality of LEDs of said at least one light-emitting unit is designed with a combination of in series and/or in parallel connections such that when incorporated with a level setting of said DC power for driving said first LED load, an electric current passing through each LED of said first LED load remains at a level such that a voltage V across each LED complies with an operating constraint of Vth<V<Vmax featuring an electrical characteristic of each LED, wherein Vth is a reference value of a threshold voltage required to trigger each LED to emit light and Vmax is a reference value of a maximum operating voltage across each LED at which at least one LED construction in said plurality of LEDs is vulnerable to a thermal damage;
• wherein when said first LED load of said light-emitting unit is configured with N pieces of LEDs electrically connected in series or N sets of in parallel connected LEDs electrically connected in series, a working voltage VN imposed on said first LED load for driving said plurality of LEDs is confined in a domain between a minimum voltage equal to a sum of each of said threshold voltages of all LEDs electrically connected in series or sets of in parallel connected LEDs electrically connected in series and a maximum voltage equal to a sum of each of all said maximum operating voltages of all LEDs electrically connected in series or sets of in parallel connected LEDs electrically connected in series, expressed by N×Vth<VN<N×Vmax.

An on line free setting method for setting at least one operating parameter of a lighting device, comprising:

• using a user interface APP (software application) comprising at least one free setting algorithm loaded in a mobile device to transform a user's setting decision into at least one operating variable of at least one operating parameter of said lighting device;
• transmitting via said mobile device at least one wireless instruction signal carrying at least one message of said at least one operating variable to said lighting device for processing at least one value of said at least one operating parameter of said lighting device according to said user's setting decision;
• and
• using a controller of said lighting device, designed with a capacity to interpret said at least one wireless instruction signal received by a wireless signal receiver of said lighting device and accordingly manages to output at least one control signal to control, select or set the at least one value of said at least one operating parameter of said lighting device;
• wherein when said user interface APP is activated and concluded with at least one setting decision, said user interface APP manages to transmit via said mobile device said at least one wireless instruction signal carrying at least one message of said at least one operating variable to said lighting device, wherein said at least one operating variable is used for processing at least one value of said at least one operating parameter of said lighting device;
• wherein said at least one value of said at least one operating parameter is stored in a memory of said controller for a repetitive performance, wherein said at least one value of said at least one operating parameter stored is replaceable by processing a new at least one operating variable selected by said user;
• wherein said at least one operating parameter is used for controlling at least one of various functional performance settings of said lighting device including at least timer setting, light intensity setting, color temperature setting, detection sensitivity setting or performance mode switching and setting between two different illumination performance modes;
• wherein said user interface APP is operable on a touch screen panel of said mobile device, wherein said free setting algorithm is a capacity scale simulation process implemented by a visual configuration of a free setting operator incorporated with a capacity scale simulator and an indicator of a capacity operating rate to facilitate said user's decision making process in setting a desired level of said at least one operating parameter, wherein when said free setting operator is activated by said user to interact with said capacity scale simulator, said user's interface APP responsively manages to determine a value of said capacity operating rate by selection or computation according to an instantaneous state of interaction between said free setting operator and said capacity scale simulator with said indicator of said capacity operating rate simultaneously showing said instantaneous value of said capacity operating rate, wherein said capacity operating rate shown in said indicator can be an operating percentage, an operating chart or an actual operating value of a relevant operating parameter, wherein when a free setting motion of said free setting operator is ceased, said user interface APP manages to generate said at least one operating variable corresponding to said capacity operating rate being determined and accordingly operates to transmit said at least one wireless instruction signal carrying said at least one message of said at least one operating variable to said lighting device for execution.

An LED security lighting system including at least a first two-level LED security light, comprising:

• a light-emitting unit configured with a first LED load and a second LED load electrically connected in parallel;
• a loading and power control unit;
• a light sensing control unit;
• a motion sensing unit;
• and
• a power supply unit;
• wherein the first LED load is configured with N number of LEDs emitting light with a first color temperature and the second LED load is configured with M number of LEDs emitting light with a second color temperature, wherein N and M are positive integers;
• wherein the loading and power control unit includes a controller and a switching circuitry, wherein the switching circuitry includes a first semiconductor switching device and a second semiconductor switching device, wherein the controller is electrically coupled to the light sensing control unit, the motion sensing unit, the first semiconductor switching device and the second semiconductor switching device;
• wherein the first semiconductor switching device and the second semiconductor switching device are electrically connected in parallel with the first semiconductor switching device being electrically connected between a DC power source and the first LED load and the second semiconductor switching device being electrically connected between the DC power source and the second LED load;
• wherein the controller outputs different control signals to respectively control conduction states and cutoff states of the first semiconductor switching device and the second semiconductor switching device to respectively perform at least a first illumination mode and a second illumination mode;
• wherein when a nighttime signal is received by the controller defined as an ambient light detected by the light sensing control unit being lower than a first predetermined value, the controller outputs a first control signal to control a first conduction rate of the first semiconductor switching device to generate a first level illumination with the first color temperature for a first predetermined time duration;
• wherein when a daytime signal is received by the controller defined as the ambient light detected by the light sensing control unit being higher than a second predetermined value, the loading and power control unit operates to switch off the light emitting unit;
• wherein when a motion signal is detected by the motion sensing unit, the controller operates to output a second control signal to control a conduction state of the second semiconductor switching device to perform the second illumination mode to generate a second level illumination with the second color temperature for a second predetermined time duration;
• wherein the first color temperature is designed with a value in a range between 2000K and 3000K, and the second color temperature is designed with a value between 4000K and 6500K;
• wherein a light intensity of the first level illumination is designed with a value in a range greater than 0% of a maximum light intensity but less than 50% of the maximum light intensity designed for the light-emitting unit to characterize the first level illumination, wherein a second light intensity of the second level illumination is designed with a value in a range greater than 50% of the maximum light intensity but less than or equal to 100% of the maximum light intensity to characterize the second level illumination being higher than the first level illumination;
• wherein the N number LEDs of the first LED load and the M number LEDs of the second LED load are respectively designed with a configuration of in series and/or in parallel connections such that when incorporated with a power level setting of the DC power an electric current passing through each LED of the first LED load and each LED of the second LED load remains at an adequate level such that a voltage V across each LED complies with an operating constraint of Vth<V<Vmax featuring electrical characteristics of a LED, wherein V is a variable within a narrow dispersion range characterized by an LED voltage bin selected, where Vth is a reference value of a threshold voltage required to trigger each LED to start emitting light and Vmax is a reference value of a maximum operating voltage across each LED at which at least one LED construction in said plurality of LEDs is vulnerable to a thermal damage.