Patent Application
20130093332
(a) Field of the Invention
The present invention relates to lighting control technology and more particularly, to an intelligent LED lamp group control device, which uses the wiring layout and location of an existing lighting control wall switch to achieve an intelligent LED lamp group control by means of a specially designed circuit structure without making any wiring layout modification.
(b) Description of the Prior Art
Conventional wall-mount lamp control switches are so designed that one switch controls one lamp or a number of lamps. In case LED lamps are used, the functioning of conventional wall-mount lamp control switches remains unchanged. If going to change the LED lamp control contents, the wiring layout must be re-arranged. After installation of the wiring layout, the wall switch control content is fixed and not freely adjustable. A new wiring layout must be made if any change of the wall switch control content is required. Using wall-mount lamp control switches in this manner is inconvenient and may cause waste.
The present invention has been accomplished under the circumstances in view. It is one object of the present invention to provide an intelligent LED lamp group control device, which can use the wiring layout of an existing lighting control wall switch to achieve intelligent LED lamp group control by converting the power supply that is originally provided to the LED lamps controlled by the existing lighting control wall switch into a logic control signal without any extra wiring or operating interface and, which provides an internal DIP switch or attached external controller for group scene configuration setting without making any extra wiring work.
It is another object of the present invention to provide an intelligent LED lamp group control device, which provides a night lamp linking energy-saving control interface that accepts the wiring layout of the existing lighting control wall switch and can directly convert the power supply into a logic control signal for controlling all linked controllers so that all the LED lamps can be changed into a night lamp mode by means of a group scene setting and the LED lamps that are not set to perform the night lamp mode will be turned off. In other words, one single wall switch can control all the LED lamps in the whole luminous area, turning off all the other LED lamps and simply keeping the assigned LED lamp(s) for illumination.
It is still another object of the present invention to provide an intelligent LED lamp group control device, which uses an external battery for emergency lighting, enabling the LED lamps to consume battery power supply upon a power failure, and, which controls charging and discharging of the attached external battery avoiding overcharge or over-discharge. The intelligent LED lamp group control device rapidly and accurately detects a power failure signal and automatically switches the LED lamps into a night lamp mode and connects the battery power supply from the attached external battery to the LED lamp at each intersection for lighting and at the same time, turns off the other LED lamps, saving power consumption and extending the service time of the attached external battery.
It is still another object of the present invention to provide an intelligent LED lamp group control device, which uses a passive infrared sensor to sense the approaching of a human body and to automatically control the operation of the LED lamps subject to the sensing operation of the passive infrared sensor. By means of connecting the output power supply of the passive infrared sensor to the auto lighting control interface and making a group scene setting, each LED lamp is individually controlled.
It is still another object of the present invention to provide an intelligent LED lamp group control device, which provides an interface for remote power measurement reading and inquiring control, enabling the power consumption data and operation status data of the LED lamps to be recorded and reported to a remote system control center. Thus, the invention works as a platform for enabling any of a variety of communication interfaces, such as cell phone or mobile PC to be connected to the remote system control center for real-time or timely control of the LED lamps or for inquiring the power consumption data or the operation status of the LED lamps.
a)˜5(d) is a circuit diagram of the main controller in accordance with the present invention.
a)˜6(b) is a circuit diagram of the attached intelligent operation and control device of the intelligent LED lamp group control device in accordance with the present invention.
The controller top cover 1.1 has an extended surface area, providing waterproof, dustproof and heat dissipation effects.
Further, the controller top cover 1.1 has a mounting through hole 1.2 for receiving a thumbscrew, facilitating mounting and dismounting and internal setting.
Further, top cover guide blocks 1.3 are set between the controller top cover 1.1 and the controller casing 1.15, facilitating mounting and dismounting of the controller top cover 1.1.
The DC power converter 1.4 provides the necessary working voltage to multiple LED lamps, saving the cost.
The controller main board 1.5 is adapted for the linking of operation and control interfaces, comprising an AC power input port 1.6, a night lamp control input port 1.7, an emergency operation switch 1.8, an external set control box connector 1.9, a wall switch input unit 1.10, a control configuration set interface 1.12, a power failure battery input port 1.13 and a night lamp and RS-485 serial port 1.14.
The AC power input port 1.6 is a city power supply interface.
The night lamp control input port 1.7 is directly connectable to the power supply of an existing lighting control switch for converting the power supply of the existing lighting control switch into a digital signal for night lamp control.
The emergency operation switch 1.8 is adapted for switching between different power sources and emergency application.
The external set control box connector 1.9 is connected to the external set control box by a 15-core cable for group configuration setting and a simple one-to-one lighting control.
The wall switch input unit 1.10 provides three ports for the input of the power supply of existing lighting witches or passive infrared sensor and adapted for converting inputted power supply signals into logic digital signals.
The external LED lamp power drive port unit 1.11 includes four sets of ports, each set consisting of two ports. Thus, the external LED lamp power drive port unit 1.11 can provide power supply to total 8 pcs of LED lamps and coupled with them for power control and measurement.
The control configuration set interface 1.12 is an interface adapted for setting group configurations. The group configuration setting can also be done by means of an internal DIP switch.
The power failure battery input port 1.13 is adapted for allowing an external battery to provide the necessary working voltage in case of power failure and driving the connected LED lamps to work in a night lamp group mode, thereby extending battery service time. Further, the power failure battery input port 1.13 also provides a charging/discharging control protection function.
The night lamp and RS-485 serial port 1.14 works as an interface for night lamp linking control and RS-485 remote power measurement reading and inquiring control communication.
The controller casing 1.15 accommodates the DC power converter 1.4 and the controller main board 1.5. The DC power converter 1.4 provides the necessary working voltage to multiple LED lamps.
The bracket 1.16 matches with the controller casing 1.15 for on-site installation and heat dissipation.
The battery charging/discharging control and protection circuit 2.3 allows for the setting of one of a series of battery charging upper limit voltages and one of a series of battery discharging lower limit voltages to keep the battery in the full power condition without overcharge. In case of power failure, the battery charging/discharging control and protection circuit 2.3 immediately detects and the situation, and then directly jumps to a night lamp group scene mode and controls a relay to let an external battery power supply substitute for the output of the AC/DC power converter 2.1, and at the same time, starts a battery discharge lower limit voltage comparator circuit, which automatically turns off the battery power supply when its discharge voltage reaches the set lower limit.
The night lamp linking energy-saving control interface 2.4 accepts the existing wall switch control and directly converts it into a night lamp group scene mode, and is controllable by a wall switch of the linked main control end. After the night lamp power-saving function is started, the microprocessor and periphery 2.6 turns off the major part of the LED lamps and keeps turning on the limited number of LED lamps that have been set into the night lamp mode subject to the predetermined night lamp setting, maintaining the necessary passageway lighting.
The passive infrared (PIR) control interface 2.5 is adapted for obtaining a control signal from the output power of a passive infrared sensor via a photo isolation circuit, and then provides the control signal to the microprocessor and periphery 2.6, and then controls the LED lamp corresponding to the passive infrared sensor that senses the approaching or departure of a human body.
The microprocessor and periphery 2.6 has software and memory built therein for reading various group scene input signals from blocks 2.4/2.5/2.9/2.10, and then drives the LED lamp control and power consumption measurement interface 27, subject to the group scene settings in the memory, to turn on/off each LED lamp and to measure the power consumption of each LED lamp and to further provide a measured data to a remote server through the RS-485 communication interface 2.11.
The LED lamp control and power consumption measurement interface 2.7 comprises a drive circuit consisting of 8 power MOSFETs (metal-oxide semiconductor field effect transistors), voltage measurement circuit, a current measurement and converter circuit and a status reading interface. By means of a series-in/parallel-out control IC, the microprocessor and periphery 2.6 controls every power MOSFET of the LED lamp control and power consumption measurement interface 2.7 to turn on/off each LED lamp, and to synthesize the current LED drive voltage into a drive current. Subject attenuation and amplification at a proper ratio, the A/D interface of the microprocessor and periphery 2.6 measures and converts the voltage (V) and electric current (A), and calculates the power (W) and the electric energy (Wh) consumed by each LED lamp. At final, by means of a parallel-in/series-out control IC, the LED lamp control and power consumption measurement interface 2.7 reads in the status of each LED lamp, recognizing the sources of the resultant electric currents for accurate recording individually.
The external control set interface 2.8 is designed subject to the configuration of the attached external set control box 2.12. When AC/DC power converter 2.1 is normal but not usable, the power switch of the attached external set control box 2.12 is started. At this time, the series-in/parallel-out control IC of the microprocessor and periphery 2.6 disables the LED lamp control IC, i.e., let the external set control box to take over the LED lamp On/Off control right. The external control set interface 2.8 provides the attached external set control box 2.12 with the necessary working power supply, allowing manual operation of each switch to control On/Off of each respective LED lamp for emergency application. By means of this interface, group configuration setting can be done from the outside.
The photo isolation carrier communication interface 2.9 matches the attached intelligent operation and control device 2.13, which uses the wiring layout and positions of the existing wall light control switches. This photo isolation carrier communication interface 2.9 utilizes the wiring layout of the existing two-line switch circuit. When reaching the peak value during the positive half cycle, the attached intelligent operation and control device 2.13 directly load the control signal onto the carrier wave, enabling the photo isolation carrier communication interface 2.9 to get the data from the carrier wave by photo isolation. The data thus obtained from the attached intelligent operation and control device is then decoded by the microprocessor and periphery 2.6 for controlling On/Off of the LED lamps, achieving intelligent LED lamp control by using the existing switch.
The wall switch group control interface 2.10 receives On/Off data from the existing wall switches. By means of photo isolation, the On/Off status of the existing wall switch is known, i.e., it converts power On-Off signal into logic Hi-Low signal, and then provides the signal to the microprocessor and periphery 2.6 for reading and further LED lamp On/Off control. Thus, the existing wiring layout and switches can be used for group scene control without making any change.
The RS-485 communication interface 2.11 is adapted for converting a UART signal from the microprocessor and periphery 2.6 into a RS-485 signal for connection with a remote server by a differential method, achieving remote inquiry and control.
The attached external set control box 2.12 is coupled to the external control set interface 2.8 by means of a 15-core cable for manual control of the power switches thereof to take over the LED lamp On/Off control right. The power switches of the attached external set control box 2.12 are manually operable to control On/Off of the LED lamps in a one-to-one manner. Further, the attached external set control box 2.12 allows the content of external group configuration setting to be stored in the memory of the microprocessor and periphery 2.6.
The attached intelligent operation and control device 2.13 works by using the wiring layout and location of the existing wall switch. This attached intelligent operation and control device 2.13 is made in the form of a box subject to the size of the wall switch for obtaining the necessary working power supply from the two wires of the existing wall switch and loading the LED lamp control signal onto the carrier wave at about 90° electrical angle during the positive half cycle of the sine wave so that the external control set interface 2.8 can receive the control signal and the microprocessor and periphery 2.6 can decode the control signal and control the LED lamps, achieving intelligent control without changing the existing wiring layout.
The operational principle and effects of the present invention will now be described hereinafter with reference to the circuit diagram of the main controller shown in
As shown in
As shown in
When the supply of the power supply is normal, the power supply is inputted through the diode D1 and stabilized through a resistor R12 and a Zener diode ZD2 and then processed through a resistor RT1 and a transistor Q1 to provide stabilized 24V voltage, that is then processed through a resistor R8 and a Zener diode ZD1 into 9V voltage. Further, the input power supply is also transmitted through a resistor RT2 to a voltage regulator IC U2 and then processed by resistors R17 and R18 subject to a predetermined ratio into 5V voltage for the microprocessor and periphery. Further, 9V voltage thus obtained is shunt through resistors R28, R29, R30, R31 and R32 into 6V, 4.5V, 3.75V and 3V and then selectively outputted through the terminal J11 for use as a reference voltage Vref for determination of the charging and discharging upper and lower limit voltages of the battery charging/discharging control and protection circuit 2.3. The corresponding battery voltages are 48V, 36V, 30V and 24V.
Further, the inputted power supply can be directly sent to a relay RY1 for providing to the LED lamps. The relay RY1 is controlled by a transistor Q10. When the transistor Q10 is ON, the input power supply is transmitted through resistors R15 and RT3 and a diode D19 to the LED lamps, limiting the supply of power supply to the LED lamps, i.e., simply providing a small amount of power supply to the LED lamps, enabling the LED lamps to work as night lamps.
When the relay RY1 is ON, i.e., when under the night lamp mode, the power supply is sent through a diode D22 to the switch SW2. When the switch SW2 is ON, i.e., when the terminal 2-3 and the terminal 4-5 are conducted, the power supply passes through SO-1 and SO-2 to a next controller. Subject to the functioning of the night lamp linking energy-saving control interface 2.4, the next LED lamp is controlled to perform the night lamp mode. Thus, when the switch SW2 is switched on, the present controller is defined to work as the main night lamp control switch for switching all the linked controllers into the night lamp mode.
As shown in
The photo isolator IC, referenced by U11 is adapted for power failure detection. When the power supply at the terminals AC-L and AC-N is off, the light-emitting diode, referenced by D42, receives no electric current, the collector electrode of the photo isolator IC U11, i.e., the PIN 7 of the component, referenced by U10A, is changed to HI, causing the component U10A to output HI to conduct a transistor Q13, driving a relay RY2 to work. Thus, the battery power supply from the attached external battery goes through the relay RY2 to the terminal DC-IN, i.e., the controller obtains the necessary working voltage from the attached external battery. At this time, the power failure signal is provided to a diode D51 to enter the nigh lamp mode, causing the relay RY1 to limit the supply of the power supply to the LED lamps, and therefore the attached external battery directly provides the battery power supply to the LED lamps, enabling the LED lamps to work for a long period of time under the night lamp mode. When the battery power is lowered during continuous operation, and dropped below the condition where the shunt voltage of the resistor R55 and the shunt voltage of the resistor R57 are below the selected reference voltage Vref, the output of the component, referenced by U12A, becomes LOW, and the diode, referenced by D41, is driven to change the pin 7 of the component U10A from HI to LOW, and therefore the transistor Q13 is OFF, and the relay RY2 is ON, stopping the supply of battery power supply and prohibiting an over-discharge.
As shown in
Further, the component, referenced by U19, is a night lamp linking control interface. When linking the present controller, the switch, referenced by SW5, is set into ON position, thus, when a power supply is inputted through components S01-1 and S01-3, it is controlled in the same manner as through the components AC-L3 and AC-N3 to change UID-PINs 12 and 13 from HI to LOW and NLC from LOW to HI, driving the component U16 to enter the night lamp mode. By means of the design of the present interface, one single wall switch can control the lightings of the whole building or whole floor into the night lamp mode, i.e., simply maintaining a minor amount of power supply and switching off the lighting power supply that is not cut off.
The passive infrared (PIR) control interface 2.5 shown in
As shown in
Referring to
The external control set interface 2.8 provides a 15-pin connector having its PIN 1˜PIN 8 connected to the terminals G1˜G8 of the LED lamp control and power consumption measurement interface 2.7 for controlling the conduction of the respective transistors Q2˜Q9 and further controlling 8 external LED lamps that are respectively connected to the terminals LED-OUT1˜OUT8. The necessary 24V working power supply is obtained through resistor R85, and the control right is obtained through PIN 13 of the component J3, i.e., the PIN 13 of the component J3 is connected to the base electrode of the transistor Q11. Normally, the base electrode of the transistor Q11 is at HI, causing the collector electrode of the transistor Q11 to be changed to LOW. At this time, the output of the component U4 is controlled by the microprocessor IC U16. When the external set control box is started, the PIN 13 is changed to LOW, the output of the component U4 is disabled, and the LED lamp control right is handed to J13-1˜8 of the external control set interface 2.8 for emergency lighting control upon a circuit failure.
Further, the external control set interface 2.8 provides 4 scene group settings including 2 scene group settings for group lighting control, 1 scene group setting for PIR lighting control, and 1 scene group setting for night lamp control. The values of these settings are read from G1˜G8 and MD1˜MD4 by the microprocessor IC U16 by means of the parallel-in/series-out converter ICs U15 and U18, and then stored in its internal memory for controlling the operation of the LED lamps.
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Although a particular embodiment of the invention has been described in detail for purposes of illustration, various modifications and enhancements may be made without departing from the spirit and scope of the invention. Accordingly, the invention is not to be limited except as by the appended claims.
