CN1787708A - Method and system for centrally controlling lighting - Google Patents

Abstract

The invention relates to a method for centralized control of lamplight, which is characterized in that a closed output loop is formed by connecting a positive output end and a negative output end of a main control device by using a lead, and each lamp light source is respectively and independently connected with an auxiliary control device; coupling each auxiliary control device with a lead of the output loop or connecting each auxiliary control device into the output loop in series; and corresponding codes are respectively arranged corresponding to the light sources, the codes of the light sources to be controlled are input into the main control device, the main control device generates and outputs code control signals, and the codes are decoded by the auxiliary control device to control the light sources. Compared with the prior art, the invention has the technical effects that: only one light control output line is needed, the control and the maintenance are convenient, the wiring is simple, and the equipment cost and the construction and maintenance cost are reduced.

Description

Method and system for centrally controlling lighting

Technical Field The present invention relates to the technical field of remote control of power distribution, in particular to a method and system for centrally controlling multi-channel lighting loads by means of digital coding.

Background technology In office buildings, residential buildings and hotels, special lighting distribution rooms are generally set up. The lighting distribution room is equipped with switchboards with switchboards. Hundreds of amperes of mains electricity are distributed to each output circuit through the distribution boards. A plurality of illuminating lamps are respectively connected in parallel on each output circuit. The power on and off of each lighting lamp is controlled by a switch connected in series with it, as shown in Figure 1. There are following deficiencies in the lighting control system of the above-mentioned prior art:

1. The on and off of the power supply of each lighting lamp can only be operated by a local switch, which is inconvenient to control;

2. The wiring is cumbersome, the control system uses a lot of switching equipment, and the equipment cost is high;

3. The construction is complicated and the cost is high;

4. Maintenance is inconvenient.

SUMMARY OF THE INVENTION The technical problem to be solved by the present invention is to avoid the shortcomings of the above-mentioned prior art and propose a method and system for centralized control of lights with convenient control, simple construction and maintenance, and low cost.

The present invention solves described technical problem and can realize by adopting following technical scheme:

A method for centralized control of lights is proposed, which is to connect the positive and negative output ends of the main control device with wires to form a closed output loop, and connect each light source to an auxiliary control device separately; The device is coupled to the wire of the output circuit or the auxiliary control devices are connected in series to the output circuit; corresponding codes are set corresponding to the light sources, and the lamps to be controlled are input to the main control device. For the code of the light source, the main control device generates and outputs a coded control signal current, which is decoded by the auxiliary control device to control the light source.

The present invention can also solve the technical problem by adopting the following technical solutions:

Design and use a centralized control lighting system, including a main control device, a light source, and an auxiliary control device with the same number as the light source. The switching device is electrically connected to the light source; the main control device includes a central processing unit, an input encoding device, an encoding control signal generation circuit and a main amplifier, and the input encoding device and the encoding control signal generation circuit are respectively electrically connected to the central processing unit, The encoding control signal generating circuit is electrically connected to the input encoding device and the main amplifier respectively; the positive and negative output terminals of the main amplifier of the main control device are connected to form an output loop by a wire, and the current sensor A component is coupled to the lead of the output loop.

The current sensing element of the auxiliary control device of the above-mentioned centralized control lighting system can be replaced by an RC circuit, and the resistors of the RC circuit are connected in series to the output circuit.

Compared with prior art, technical effect of the present invention is:

1. In the prior art, the power control of the lighting system is by switching the power switch of the switchboard. For the remote control of a single light source, multiple complicated wiring is required; however, the present invention does not matter whether it is for the power control of the entire lighting system or for a single The lamp control can be controlled remotely through the input coding device on the main control device, such as a touch screen, and only one light control output line is needed, which is simple and convenient to control, simple to wire, and low in cost.

2. The present invention can arbitrarily set control modes such as single, group or all light source control modes.

3. The control system of the present invention uses less control equipment and wires, and the cost is low.

4. No matter how many light sources are connected, there is only one light control output line, the construction is simple, and the construction cost is greatly reduced; in case of failure, maintenance is also convenient.

Description of drawings

FIG. 1 is a schematic diagram of a lighting control system in the prior art;

Fig. 2 is a schematic diagram of the centralized control lighting method of the present invention;

Fig. 3 is a schematic diagram of Embodiment 1 of the centralized control lighting system of the present invention;

Fig. 4 is a schematic diagram of Embodiment 2 of the centralized control lighting system of the present invention;

Fig. 5 is a schematic diagram of Embodiment 3 of the centralized control lighting system of the present invention;

Fig. 6 is a schematic block diagram of the main control device of the system of the present invention;

Fig. 7 is a schematic diagram of the circuit principle of the main control device of the system of the present invention.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Further details will be given below in conjunction with the preferred embodiments shown in the accompanying drawings.

The method for centralized control of lighting of the present invention is shown in Figure 2 to Figure 4, and it comprises steps:

① Connect the positive and negative output terminals of the main control device 1 with wires to form a closed output loop 4;

② Connect each light source 2 to an auxiliary control device 3 separately;

③ The wires of each of the auxiliary control devices 3 and the output loop 4 are coupled or connected in series into the output loop 4 by means of sensors;

④ corresponding codes are respectively set corresponding to the light sources 2, and the codes are directly solidified in the central processing unit of the main control device or;

⑤ Input the code of the light source 2 to be controlled to the main control device 1, and the main control device 1 generates and outputs the corresponding coded control signal, and then the auxiliary control device 3 decodes and outputs the control signal to control the lamp The current on and off of the light source and the strength of the current, etc.

Embodiment 1 of the centralized control lighting system of the present invention, as shown in Figure 2 and Figure 3, includes a main control device 1 and each light source 2, and also includes an auxiliary control device 3 having the same number as the light source 2, and the auxiliary control device 3 is in turn It includes a current sensing element 31 , an amplifier 32 , a decoder 33 and a switching device 34 electrically connected in sequence, and the main circuit part of the switching device 34 is electrically connected to the light source 20 .

As shown in FIG. 6 , the main control device 1 includes a central processing unit 11 , an input encoding device 12 , an encoding control signal generation circuit 13 , an encoding setting switch 15 and a main amplifier 16 . The input coding device 12, the coding control signal generating circuit 13 and the coding setting switch 15 are electrically connected to the central processing unit 11 respectively, and the coding control signal generating circuit 13 is electrically connected to the input coding device 12 and the main amplifier 16 respectively. connect. The input encoding device 12 is a touch liquid crystal screen. The central processing unit 11 includes two chips 111 and 112, the chip 111 is responsible for processing key information and display information input through the touch LCD screen, and the chip 112 is responsible for temporary data storage and calculation and processing of database data. The schematic circuit diagram of the main control device 1 is shown in FIG. 7 .

As shown in Figure 2 and Figure 6, the positive and negative output terminals of the main amplifier 16 of the main control device 1 are connected by a wire to form an output loop 4, and the current sensing element 31 and the output loop 4 Wire coupling: input the code of the light source 2 to be controlled by means of the input coding device 12, the central processing unit 11 receives the input signal, controls the code control signal generation circuit 13 to generate a code control signal current and outputs ; When the current signal passes through the wire of the loop 4, the current sensing element 31 of the auxiliary control device 3 of the light source that needs to be controlled generates an induced current; the induced current is amplified by the amplifier 32 and passed through the Decoder 33 decodes and outputs to switching device 34, the on-off of this switching device 34 is directly controlled or passed through another more powerful switching device to control the on-off and power of the main circuit, so as to realize centralized control of the various On-off and dimming of the light source 2.

As shown in FIG. 2 , the switching device 34 is a light-controlled bidirectional thyristor; the current sensing element 31 is an iron core winding coil, which is placed parallel to the wire of the output circuit 4 . If the iron core is annular, the wire of the output circuit 4 passes through the center of the annular iron core and is perpendicular to the plane where the iron core is located.

Embodiment 2 of the centralized control lighting system of the present invention is shown in FIG. 3 , which is roughly the same as Embodiment 1, except that the current sensing element in this embodiment is a Hall element.

The third embodiment of the centralized control lighting system of the present invention is shown in Figure 4, which includes a main control device 1, each light source 2 and an auxiliary control device 3 having the same number as the light source 2, and the auxiliary control device 3 includes sequentially electrically connected RC circuit 35 , amplifier 32 , decoder 33 and switch device 34 , the switch device 34 is electrically connected to light source 20 . The switching device 34 is a photo-controlled bidirectional thyristor.

The main control device 1 is the same as the above two embodiments.

The positive and negative output terminals of the main control device 1 are connected to form an output loop 4 by a wire, and the resistor 35 of the RC circuit is connected in series to the output loop 4; The encoding of the controlled light source 2, the central processing unit 11 receives the input signal, controls the encoding control signal generation circuit 13 to generate an encoding control signal current and outputs it; the current distributed to the resistor 35 passes through the The amplifier 32 is amplified and decoded by the decoder 33 and then output to the switch device 34 to control the switch device 34 on and off, so as to achieve centralized control of the light source 2 on and off and the degree of brightness.

Claims (9)

1. A method for centralized control of light, characterized in that, comprising the steps: ① Connect the positive and negative output ends of the main control device (1) with wires to form a closed output loop (4); ②Connect each light source (2) to an auxiliary control device (3) separately; ③The current sensing elements (31) of each of the auxiliary control devices (3) are coupled with the wires of the output loop (4), or each of the auxiliary control devices (3) is directly connected in series to the output loop ( 4) in; ④ corresponding to each of the light sources (2) respectively set their own codes; ⑤ Input the code of the light source (2) to be controlled to the main control device (1), and the main control device (1) generates and outputs a corresponding coded control signal, and the control signal passes through the output circuit (4) The wire corresponding to the current sensing element (31) of the auxiliary control device (3) of the light source to be controlled (2) generates a corresponding coded control signal, which is decoded by the auxiliary control device (3) and output to control the lamp light source. 2. The method for centralized control of lights according to claim 1, characterized in that: the control of the light sources (2) by the main control device (1) includes controlling the current on and off of the light sources (2) And the magnitude of the current supplied to the light source. 3. The method for centralized control of lights according to claim 1, characterized in that: the code of the light source (2) is solidified in the central processing unit of the main control device (1) or stored in an additional memory . 4. A centralized control lighting system for realizing the method according to claim 1, comprising a main control device (1) and each light source (2), characterized in that: It also includes an auxiliary control device (3) having the same number as the light source (2), and the auxiliary control device (3) further includes a current sensing element (31), an amplifier (32), a decoder (33) and A switch device (34), the main circuit part of the switch device (34) is directly electrically connected to the light source (20), or is electrically connected to the light source (20) through another higher power switch device; The main control device (1) includes a central processing unit (11), an input encoding device (12), an encoding control signal generating circuit (13) and a main amplifier (16), and the input encoding device (12) and the encoding control signal The generating circuit (13) is electrically connected to the central processing unit (11) respectively, and the encoding control signal generating circuit (13) is electrically connected to the input encoding device (12) and the main amplifier (16) respectively; The positive and negative output terminals of the main amplifier (16) of the main control device (1) are connected by a wire to form an output loop (4), and the current sensing element (31) is connected to the output loop (4) The wire coupling; by means of the input coding device (12) to input the coding of the light source (2) to be controlled, the central processing unit (11) receives the input signal and controls the coding control signal generation circuit ( 13) Generate and output a coded control signal; when the control current signal current passes through the wire of the loop (4), the current sensing element (31) of the auxiliary control device (3) of the light source that needs to be controlled generates a corresponding code Control signal; the signal is amplified by the amplifier (32) and decoded by the decoder (33) and then output to the switching device (34), so as to control the on-off of the main circuit of the switching device (34), so as to realize centralized control On-off and/or supply current of the light source (2). 5. The centrally controlled lighting system according to claim 4, characterized in that: the current sensing element (31) is an iron core wound coil placed parallel to the wire of the output circuit (4). 6. The centrally controlled lighting system according to claim 4, characterized in that: the current sensing element (31) is a coil wound around an iron core, the iron core is in the form of a ring, and the wire of the output circuit (4) passes through the The center of the annular iron core, and perpendicular to the plane where the iron core is located. 7. The centralized control lighting system according to claim 4, characterized in that: said main control device (1) further comprises a coding setting switch (15), and said coding setting switch (15) is connected with said central processing unit (11) Electrical connection. 8. A method for centralized control of lighting, characterized in that it comprises the steps of: ① The positive and negative output terminals of the main control device (1) are connected by wires to form a closed output loop (4); ②Connect each light source (2) to an auxiliary control device (3) separately; ③ the resistance series connection of the RC circuit (35) of the auxiliary control device (3) is connected in the output circuit (4); ④ corresponding codes are respectively set for each of the light sources (2); 5. Input the coding of the light source (2) that needs to be controlled to the main control device (1), and the corresponding coded control signal current is generated and output by the main control device (1), and the signal current is passed through the RC circuit (35 ) voltage drop on the resistor is decoded by the auxiliary control device (3) and then output to control the light source (2). 9. A centralized control lighting system for realizing the method according to claim 8, comprising a main control device (1) and each light source (2), characterized in that: It also includes an auxiliary control device (3) with the same number as the lamp light source (2), and the auxiliary control device (3) includes an RC circuit (35), an amplifier (32), a decoder (33) and a switch device that are electrically connected in sequence (34), the main circuit part of the switching device (34) is electrically connected to the light source (20); The main control device (1) includes a central processing unit (11), an input encoding device (12), an encoding control signal generation circuit (13) and a main amplifier (16), and the input encoding device (12) and the encoding control signal The generating circuit (13) is electrically connected to the central processing unit (11) respectively, and the encoding control signal generating circuit (13) is electrically connected to the input encoding device (12) and the main amplifier (16) respectively; The positive and negative output terminals of the main control device (1) are connected to form an output loop (4) by a wire, and the resistor series of the RC circuit (35) is connected into the output loop (4); The input coding device (12) inputs the code of the light source (2) to be controlled, and the central processing unit (11) receives the input signal and controls the code control signal generating circuit (13) to generate a corresponding code The control signal current is output; the voltage drop distributed to the resistance of the RC circuit (35) is amplified by the amplifier (32) and decoded by the decoder (33) and then output to the switching device (34) to control The on-off of the switching device (34) realizes the centralized control of the on-off of each light source (2) and the size of the supply current.

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