CN113329541B - lighting control system - Google Patents

Abstract

This application relates to a lighting control system, including: an input power distribution module, a rectification module, an output power distribution module, a detection module and a control module, the input power distribution module is connected to the main AC power supply and the rectification module, and the rectification module is connected to the output power distribution module. The output power distribution module is connected to more than two lighting loads for centralized DC power supply; the detection module is connected to the input power distribution module, output power distribution module, control module and sensing device to obtain status data and sensor data and send them To the control module; the control module is connected to the input power distribution module, rectifier module and output power distribution module, which is used to control the power distribution status and adjust the output voltage of the rectifier module according to the state data and sensor data, so as to control the power distribution of each lighting load And illuminance control, reasonable control of brightness saves energy, not only can simplify the driver structure of a single lighting load, but also increase the working life of the lighting load.

Description

lighting control system

technical field

The present application relates to the technical field of lighting control, in particular to a lighting control system.

Background technique

As a production auxiliary system in industrial plants and substations and similar places, the lighting system is important and indispensable, and it is an important guarantee to ensure stable production and safe operation. Excellent lighting can enable technicians to discover the defects of various equipment in time, eliminate hidden dangers of accidents, and improve production and maintenance efficiency. It requires high brightness, uniform light, and no glare.

At present, LED (Light-Emitting Diode, light-emitting diode) lighting loads widely used, good in dimming linearity, and long in life are all driven by DC power supply. Therefore, when using AC mains for power supply, traditional lighting systems generally need to Add a rectifier or other adapter to the load. After technological development, when performing intelligent control for energy saving and emission reduction, it is necessary to additionally add a single lamp controller with a communication module to the lighting load, or to control the lighting load through cable or carrier wave, etc. The control is complex and practical. Low.

Contents of the invention

Based on this, it is necessary to provide a lighting control system that uses direct current to centrally distribute and control lighting loads.

A lighting control system, comprising: an input power distribution module, a rectification module, an output power distribution module, a detection module and a control module, the input power distribution module is connected to the main AC power supply and the rectification module, and the rectification module is connected to the An output power distribution module, the output power distribution module is connected to more than two lighting loads for centralized DC power supply; the detection module is connected to the input power distribution module, the output power distribution module, the control module and The sensing device is used to obtain the state data of the input power distribution module and the output power distribution module and the sensing data of the sensing device, and send them to the control module; the control module is connected to the input The power distribution module, the rectifier module and the output power distribution module are used to control the power distribution state and adjust the output voltage of the rectifier module according to the state data and sensor data, so as to control the power distribution of each of the lighting loads. Electricity and illuminance are controlled.

In one of the embodiments, the output power distribution module includes a positive output power distribution unit and a negative output power distribution unit, one end of the positive output power distribution unit is connected to the positive output terminal of the rectifier module, and the negative output distribution unit One end of the electrical unit is connected to the negative output terminal of the rectifier module, and the other ends of the positive output power distribution unit and the negative output power distribution unit are both connected to the lighting loads.

In one of the embodiments, the detection module includes an input detection module and an output detection module, the input detection module is connected to the input power distribution module and the control module, and the output detection module is connected to the output power distribution module , the sensing device and the control module.

In one embodiment, the input detection module includes an input detection unit and an input monitoring unit, both of which are connected to the input power distribution module and the control module.

In one of the embodiments, the output detection module includes a switch value detection unit, an insulation detection unit and a DC detection unit, and the switch value detection unit, the insulation detection unit and the DC detection unit are all connected to the output distribution The electric module is connected with the control module, and the switching value detection unit is also connected with the sensing device.

In one of the embodiments, the above lighting control system further includes a state switching switch, and the state switching switch is connected to the detection module.

In one of the embodiments, the above-mentioned lighting control system further includes an isolation converter and an emergency power distribution module, and the emergency power distribution module is connected to the emergency power supply, the isolation converter, the detection module, the control module and the The lighting load is used to supply power to the lighting load when the main AC power supply fails.

In one embodiment, the above lighting control system further includes an auxiliary power supply connected to the main AC power supply, the emergency power supply, the control module and the detection module.

In one embodiment, the above lighting control system further includes a lightning protection module, and the lightning protection module is connected to the input power distribution module, the output power distribution module and the detection module.

In one embodiment, the above lighting control system further includes a wireless communication module, and the wireless communication module connects the control module and the control center server.

The above-mentioned lighting control system uses a rectifier module to rectify the main AC power supply into a DC centralized power supply to all lighting loads in the system, so that there is no need to install a rectifier on a single lighting load. At the same time, the control module obtains the lighting power distribution status in real time through the acquisition module Carry out fault monitoring, obtain sensory data feedback and reasonably control brightness to save energy, which can not only simplify the driver structure of a single lighting load, but also increase the working life of the lighting load.

Description of drawings

Fig. 1 is a system block diagram of a lighting control system in an embodiment;

Fig. 2 is a system block diagram of a lighting control system in another embodiment;

Fig. 3 is a topology diagram of a lighting control system in an embodiment.

Detailed ways

In order to make the purpose, technical solution and advantages of the present application clearer, the present application will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present application, and are not intended to limit the present application.

Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the technical field to which this application belongs. The terms used herein in the specification of the application are only for the purpose of describing specific embodiments, and are not intended to limit the application.

It can be understood that the terms "first", "second" and the like used in this application may be used to describe various elements herein, but these elements are not limited by these terms. These terms are only used to distinguish one element from another element. For example, a first resistance could be termed a second resistance, and, similarly, a second resistance could be termed a first resistance, without departing from the scope of the present application. Both the first resistance and the second resistance are resistances, but they are not the same resistance.

It can be understood that the "connection" in the following embodiments should be understood as "electrical connection", "communication connection", etc. if the connected circuits, modules, units, etc. have the transmission of electric signals or data between each other.

When used herein, the singular forms "a", "an" and "the/the" may also include the plural forms unless the context clearly dictates otherwise. It should also be understood that the terms "comprising/comprising" or "having" etc. specify the presence of stated features, integers, steps, operations, components, parts or combinations thereof, but do not exclude the presence or addition of one or more The possibility of other features, integers, steps, operations, components, parts or combinations thereof.

In one embodiment, as shown in FIG. 1 , a lighting control system is provided, including: an input power distribution module 110, a rectification module 120, an output power distribution module 130, a detection module 140, and a control module 150. The input power distribution module 110 Connect the main AC power supply and the rectifier module 120, the rectifier module 120 is connected to the output power distribution module 130, the output power distribution module 130 is connected to more than two lighting loads for centralized DC power supply; the detection module 140 is connected to the input power distribution module 110, the output The power distribution module 130, the control module 150 and the sensing device are used to obtain the status data of the input power distribution module 110 and the output power distribution module 130 and the sensing data of the sensing device, and send them to the control module 150; the control module 150 is connected to The input power distribution module 110, the rectification module 120 and the output power distribution module 130 are used to control the power distribution state and adjust the output voltage of the rectification module 120 according to the state data and sensor data, so as to monitor the power distribution and illuminance of each lighting load control.

Specifically, the input power distribution module 110 is composed of switching elements, which are connected to the main AC power source to obtain AC current and provide it to the rectifier module 120 for rectification. At the same time, the switching element can cut off the power-taking circuit when a fault occurs. Wherein, the switching element may be an air switch, an AC contactor, a circuit breaker or a relay, or other switching elements. In addition, the input power distribution module 110 may be composed of a single of the above switching elements, or may be a series combination of the above switching elements, and the input power distribution module 110 may be configured according to actual needs. For example, as shown in FIG. 2 , the input power distribution module 110 in one embodiment includes a circuit breaker QF1 , an air switch Q1 and a relay KM5 connected in series between the main AC power supply and the rectifier module 120 .

Among them, the input source of the main AC power supply that provides the AC current is not unique, and can be connected according to the power supply in the actual application scenario of the lighting control system. For example, taking the application of the above-mentioned lighting control system in a substation as an example, the main AC power supply can be introduced into the AC380V AC power supply from the on-site AC feed panel, and the wiring can adopt a three-phase four-wire system. Switching elements are set on the neutral line to distribute power to the rectifier module 120 .

Similarly, the output power distribution module 130 is also composed of switching elements, which are used to connect the DC current output by the rectifier module 120 to the lighting load to form a lighting circuit for centralized power supply, and can also cut off the lighting circuit when the circuit or the lighting load fails. Wherein, the selectable type and combination of the switching elements in the output power distribution module 130 are consistent with the above-mentioned input power distribution module 110, and can be set according to the actual lighting circuit conditions of the lighting load, and will not be repeated here.

Among them, the number of lighting loads is set according to the requirements of the actual application scene, at least to ensure that the lighting area has high illumination and no dead angle. The output power distribution module 130 connects lighting loads to form a lighting loop for centralized power supply. There is no unique way. It can be to form a lighting loop for each lighting load to supply power, or to form a lighting loop for lighting loads in different areas. It can also be an interval Connect the lighting load to form a lighting circuit for power supply, which is not limited, and can be designed and adjusted according to actual applications. As shown in Figure 2, in one embodiment, the output power distribution module 130 uses three lighting circuits to supply power to lighting loads, each lighting circuit is connected in series with a relay and an air switch, for example, lighting circuit 1 includes a relay KM1 and air switch Q2.

In addition, the lighting load is a device that can adjust the illuminance according to the input voltage. It can be an adjustable lighting device that already has a dimming function, such as an LED lamp, or a general lighting device that is equipped with a dimmer switch, a transformer, etc. For example, incandescent lamps and fluorescent lamps are not limited thereto.

Further, the rectifier module 120 refers to a module capable of converting AC power into DC power. After the rectifier module 120 rectifies the AC current in the main AC power supply into DC current, it is connected to the lighting load through the lighting circuit to realize centralized DC power supply. Wherein, the number of rectification modules 120 is not unique, and can be set according to the number of lighting circuits in actual application scenarios. For example, one rectifier module 120 can provide DC current to all lighting circuits, and each lighting circuit can be connected to a rectifier module 120 to obtain DC current, and the rectifier module 120 can also be set in different regions to provide lighting circuits in each region. DC. In addition, the quantity setting of the rectification module 120 also needs to meet the rated power of all lighting loads. In one embodiment, the number of rectification modules 120 will be set as redundancy one more than the capacity of the rated load, to ensure that when any rectification module 120 is offline due to a fault, the system can still ensure sufficient load capacity, normal operation.

The detection module 140 connects the switching elements and lines of the input power distribution module 110 and the output power distribution module 130 and obtains status data to feed back to the control module 150 . Wherein, the content of the state data is not unique, and may include the on-off state of the switch element, the voltage and current value of the distribution line, and the insulation state of the distribution line. The control module 150 judges whether the circuit of the input power distribution module 110 and the output power distribution module 130 is in a normal working state according to the received status data. The switching element is disconnected to ensure that other circuits are not affected. For example, as shown in FIG. 2 , the detection module 140 is connected to the relay KM5 of the input power distribution module 110 , and also connected to the relay KM1 , relay KM2 , relay KM3 and relay KM4 of the output power distribution module 130 .

Further, the detection module 140 is also connected to the sensing device to obtain on-site sensing data and feed it back to the control module 150 to control the lighting conditions. Among them, the content of the sensing data is not unique, and can be obtained according to the sensing device set in the actual application scene. It can be the sound volume fed back by the sound sensor, or it can be the data of thermal infrared human body sensor to detect whether there is a person, etc.; according to the different installation positions of the sensor, the sensing data of different areas of the application scene can be obtained. In one embodiment, as shown in FIG. 2 , the detection module 140 can also be connected to an image acquisition device, such as a biological camera, to obtain data such as the number or density of people in the picture fed back by the image acquisition device. In another embodiment, as shown in FIG. 2 , the detection module 140 can also be connected to a fire alarm system to obtain a fire cut-off signal.

Specifically, the control module 150 judges whether it is necessary to control the illuminance of the corresponding lighting load by adjusting the output voltage of the rectification module 120 according to the acquired sensing data. For example, when the obtained ambient illuminance value gradually increases, the output voltage of the regulating rectifier module 120 gradually decreases to reduce the illumination of the lighting load; when the obtained ambient illuminance value gradually decreases, the output voltage of the regulating rectifying module 120 gradually increases To increase the illuminance of the lighting load, of course, when the illuminance of the lighting load rises to the maximum illuminance threshold, stop increasing the output voltage of the rectifier module 120 to increase the illuminance of the lighting load. For example, as shown in FIG. 2 , in one embodiment, the control module 150 is the main control unit DCU of the DC cabinet, connected to the rectifier module 120 to adjust the output voltage to reduce the illuminance of the connected lighting loads in the lighting circuits 1, 2 and/or 3 .

Further, the control module 150 can also control the power distribution status of each lighting circuit according to the acquired sensing data, for example, when the acquired ambient illuminance value has reached the illuminance value at which the lighting load can be turned off, control the output power distribution The module 130 disconnects the lighting circuit to stop the lighting. Also for example, when the sensing data of devices such as the image acquisition equipment and the thermal infrared human body sensor show that someone enters the operation, the control output power distribution module 130 turns on the lighting circuit at the corresponding position to provide lighting, and when the image acquisition equipment and the thermal infrared human body sensor When the sensing data of the device shows that the operator leaves, the control output power distribution module 130 disconnects the lighting circuit at the corresponding position to stop the lighting. For example, as shown in Figure 2, in one embodiment, the control module 150 is the control terminal of the relay KM1-4 in the output power distribution module 130 connected to the main control unit DCU of the DC cabinet. After the illuminance value of the lighting load is reached, or when the sensing data of the image acquisition equipment and thermal infrared human body sensor and other devices show that the operator leaves, the DC cabinet main control unit DCU controls the relay KM1-4 to disconnect, and the lighting circuit is disconnected to stop the lighting .

In one embodiment, when the control module 150 obtains the fire-fighting cut-off signal from the fire alarm system, the control output power distribution module 130 disconnects the lighting circuit at the corresponding position to stop the lighting, cuts off the non-fire-fighting power supply, and reserves the power supply for the fire-fighting power supply use.

The above-mentioned lighting control system adopts the rectifier module 120 to rectify the main AC power supply into a DC centralized power supply to all the lighting loads in the system, so that there is no need to install a rectifier on a single lighting load. Fault monitoring of power distribution status, acquisition of sensor data feedback and reasonable control of brightness saves energy, which not only simplifies the driver structure of a single lighting load, but also increases the working life of the lighting load.

In one embodiment, as shown in FIG. 3 , the output power distribution module 130 includes a positive output power distribution unit 131 and a negative output power distribution unit 132, one end of the positive output power distribution unit 131 is connected to the positive output terminal of the rectifier module 120, and the negative One end of the output power distribution unit 132 is connected to the negative output end of the rectifier module 120 , and the other ends of the positive output power distribution unit 131 and the negative output power distribution unit 132 are connected to each lighting load.

Specifically, the rectification module 120 may be composed of rectification diodes, or may be a controllable rectification source, and the voltage after the rectification module 120 has changed from AC voltage to unidirectional pulsating DC voltage. Specifically, the internal implementation of the rectification module 120 may be a half-wave rectification circuit, a full-wave rectification circuit, a bridge rectification circuit, or a voltage doubler rectification circuit. Taking the rectification module 120 as a bridge rectification circuit as an example, it includes four connected diodes, and the rectified output side includes a positive output terminal and a negative output terminal. As shown in FIG. 3 , for each lighting load, the positive output terminal or negative output terminal of a rectifier module is connected to the positive output power distribution unit 131 or the negative output power distribution unit 132 to form a lighting circuit for explanation. In this embodiment, n rectifier modules are included, and the positive output terminal #11, the positive output terminal #12 to the positive output terminal #1n are all connected to the positive output power distribution unit 131, and then connected to the negative output power distribution unit 131 through the positive output power distribution unit 131. Lighting load 11, lighting load 12 to lighting load 1N. Its negative output terminal #21, negative output terminal #22 to negative output terminal #2n are all connected to negative output power distribution unit 132, and then connected to negative lighting load 21, lighting load 22 to lighting load 2N through negative output power distribution unit 132.

Among them, the lighting load 11, lighting load 12, and lighting load 1N connected to the positive output power distribution unit 131, and the negative lighting load 21, lighting load 22, and lighting load 2N connected to the negative output power distribution unit 132 can be arranged at intervals. load, and also lighting loads in different areas.

In this embodiment, the positive output and negative output of the rectifier circuit 120 are respectively distributed to supply power for lighting loads, which can improve resource utilization efficiency in large-scale lighting scenarios, and the strategy of connecting lighting loads at intervals and sub-regions can also ensure In the case of a circuit failure, there will be no large area without lighting.

In one embodiment, as shown in FIG. 3 , the detection module 140 includes an input detection module 141 and an output detection module 142, the input detection module 141 is connected to the input power distribution module 110 and the control module 150, and the output detection module 142 is connected to the output power distribution module 130. A sensing device and a control module 150.

Specifically, the input detection module 141 is connected to the input power distribution module 110 to detect the power parameters input to the rectifier module 120, and collects the state data of the switching elements of the input power distribution module 110, and feeds back to the control module 150 to adjust the AC side. Monitoring and protection of power distribution status.

Further, the output detection module 142 is connected to the output power distribution module 130 to detect the current and voltage values measured by the DC after the output of the rectifier module 120, and collects the status data of the switching elements of the output power distribution module 130, and feeds back to the control module 150 to adjust the current and voltage of the DC side. Monitoring and protection of power distribution status. In addition, the output detection module 142 is also connected to the sensing device to obtain on-site sensing data and feed it back to the control module 150 to control the lighting conditions.

In one embodiment, the input detection module 141 includes an input detection unit and an input monitoring unit, both of which are connected to the input power distribution module 110 and the control module 150 .

Specifically, the input detection unit is a measuring device that collects power parameters of the distribution line input to the power distribution module 110 . The input detection unit may be an AC detection smart meter, or a circuit capable of measuring AC power parameters. Among them, the specific collected power parameters can be the voltage and current values in the loop, and can also monitor its odd, even, total harmonic and sub-harmonic distortion rates. The input detection unit collects the aforementioned power parameters and sends them to the control module 150 as a basis for monitoring and protecting the power-taking circuit.

Further, the input monitoring unit is a switching value monitoring device for collecting the switching state of the switching element of the input power distribution module 110, which may be a switching value acquisition board or a switching value detection circuit. Wherein, the opening and closing state may be an action signal for tripping of a circuit breaker or an air switch, or an alarm signal issued after a fuse is blown. The input monitoring unit collects the on-off state of each switch on the input power distribution module 110 and sends it to the control module 150 to monitor whether there is a fault on the input power distribution side.

In one embodiment, as shown in FIG. 3 , the output detection module 142 includes a switch value detection unit, an insulation detection unit and a DC detection unit, and the switch value detection unit, the insulation detection unit and the DC detection unit are all connected to the output power distribution module 130 and the DC detection unit. The control module 150 and the switching value detection unit are also connected to the sensing device.

Specifically, the switching value detection unit is connected to the output power distribution module 130 to collect the switching value monitoring device of the switching elements, and sends it to the control module 150 to monitor whether there is a fault on the input power distribution side. Specifically, it can be completed by using the same device as the input monitoring unit, so it will not be repeated here. In addition, the switching value monitoring unit is also connected to the sensing device to acquire sensing data and send it to the control module 150 to control the lighting conditions.

The DC detection unit is a measuring device for collecting and outputting the power parameters of the distribution line of the power distribution module 130, and sending it to the control module 150 as a basis for monitoring and protecting the lighting circuit. The DC detection unit may be a DC detection smart meter, or a circuit capable of measuring DC power parameters. For example, as shown in FIG. 2 , in one embodiment, the DC detection units are IS1-4, which are respectively connected to the transmission lines of three lighting circuits and one backup lighting circuit.

The insulation detection unit is connected to the transmission line of the output power distribution module 130 and detects the leakage current of the lighting circuit and the insulation resistance to the ground.

In this embodiment, the control module 150 obtains the power distribution status of the AC side and the DC side in real time through the input acquisition module 141 and the output acquisition module 142 for fault monitoring, obtains sensory data feedback and reasonably controls brightness to save energy.

In one embodiment, as shown in FIG. 2 , the above lighting control system further includes a state switching switch, and the state switching switch is connected to the detection module 140 .

Specifically, the state switching switch is connected to the switch value detection unit of the detection module 140, and can be switched to two switch states, manual or automatic. When the state switching switch is in the automatic switching state, the switch value detection unit will feed back the automatic switching state to the control module 150, and the control module 150 will normally adjust the power distribution state and the output voltage. When the state switching switch is in the manual switching state, the switch value detection unit will feed back the manual switching state to the control module 150, and the control module 150 will stop adjusting the power distribution state and the output voltage. In this embodiment, adding the above-mentioned state switching switch can ensure the normal lighting requirements of the application scene when the control system fails.

In one embodiment, as shown in FIG. 2, the above-mentioned lighting control system further includes an isolation converter and an emergency power distribution module, and the emergency power distribution module is connected to the emergency power supply, the isolation converter, the detection module 140, the control module 150 and the lighting load, Used to power lighting loads when the main AC power fails.

Specifically, the emergency power distribution module is composed of switching elements, which are connected to the emergency power supply to obtain DC current, which is used to supply power to the lighting load to form an emergency lighting circuit when the main AC power supply fails. The selection of the switching element is consistent with that in the input power distribution module 110, and will not be repeated here. Wherein, the emergency power distribution module includes a bypass switch, which is an air switch, which can be manually dialed when the control module 150 fails to supply power for the emergency lighting circuit to ensure the basic illuminance. For example, as shown in Figure 2, in one embodiment, the emergency power distribution module includes an air switch Q6-9 and a relay KM6, one end of the air switch Q6 is connected to the emergency power supply, the other end is connected to the isolation converter, and one end of the relay KM6 is connected to the isolation converter , the other end is connected to the emergency lighting circuit and the backup emergency lighting circuit, the air switch Q8 and the air switch Q9 are connected in series in the emergency lighting circuit and the backup emergency lighting circuit, and the air switch Q7 is a bypass switch.

Among them, the emergency power supply is to provide DC power in case of an accident, and its input source is not unique, and it can be connected according to the power supply in the actual application scene of the lighting control system. For example, taking the application of the above-mentioned lighting control system to a substation as an example, the emergency power supply can be introduced into a DC110V DC power supply from the secondary DC panel on site. Further, the isolation converter is connected in series in the emergency lighting circuit for protection, lightning protection and filtering of the circuit.

Further, the DC detection unit is connected to the power distribution line of the accident power distribution module through IS5 to collect its power parameters, such as voltage and current values; The module 150 serves as the basis for monitoring and protecting the emergency lighting circuit. The control part of the switching element of the power distribution module is connected to the control module 150, and when the emergency lighting circuit fails, the control switching element cuts off the circuit to prevent damage to the lighting load.

In this embodiment, by setting up the emergency lighting circuit, the basic illuminance on site can be guaranteed when the main AC power supply fails.

In one embodiment, as shown in FIG. 2 , the above lighting control system further includes an auxiliary power supply, which is connected to the main AC power supply, the emergency power supply, the control module 150 and the detection module 140 . Specifically, the input end of the auxiliary power supply is connected to the main AC power supply or the emergency power supply, and the output end is connected to the control module 150 and the detection module 140 for power supply. Wherein, the output voltage of the auxiliary power supply is 24V. In addition, in order to ensure the normal operation of the lighting control system, the auxiliary power supply is redundantly designed, and two auxiliary power supplies DC1 and DC2 are connected in parallel to supply power to the control module 150 and the detection module 140 . In this embodiment, the auxiliary power supply obtains an external power supply to provide working power for the lighting control system to ensure normal operation of the system.

In one embodiment, as shown in FIG. 3 , the aforementioned lighting control system further includes a lightning protection module connected to the input power distribution module 110 , the output power distribution module 130 and the detection module 142 . The lightning protection module is used to release the instantaneous high current to ground when encountering a lightning strike, so as to ensure the safety of electrical equipment. The detection module 142 is connected to the lightning protection module for monitoring to ensure its good performance.

In one embodiment, as shown in FIG. 3 , the above-mentioned lighting control system further includes a wireless communication module 170, and the wireless communication module 170 is connected to the control module 150 and the control center server. Specifically, the wireless communication module 170 sends the status data and sensing data received by the control module 150 from the acquisition module 140 to the control center server for storage. The communication protocol that the wireless communication module 170 can adopt is not unique, it can be GPGS, it can also be WiFi, it can also be TCP/IP, it is not limited by this. In this embodiment, the data collected by the lighting control system is stored to facilitate operation and maintenance personnel to monitor at any time.

The technical features of the above-mentioned embodiments can be combined arbitrarily. To make the description concise, all possible combinations of the technical features in the above-mentioned embodiments are not described. However, as long as there is no contradiction in the combination of these technical features, should be considered as within the scope of this specification.

The above-mentioned embodiments only represent several implementation modes of the present application, and the description thereof is relatively specific and detailed, but it should not be construed as limiting the scope of the patent for the invention. It should be noted that those skilled in the art can make several modifications and improvements without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the scope of protection of the patent application should be based on the appended claims.

Claims (9)

1. A lighting control system, comprising: the system comprises an input power distribution module, a rectification module, an output power distribution module, a detection module and a control module, wherein the input power distribution module is connected with a main alternating current power supply and the rectification module, the rectification module is connected with the output power distribution module, and the output power distribution module is connected with more than two lighting loads and used for centralized direct current power supply; the detection module is connected with the input power distribution module, the output power distribution module, the control module and the sensing device, and is used for acquiring state data of the input power distribution module and the output power distribution module and sensing data of the sensing device and sending the state data to the control module; the control module is connected with the input power distribution module, the rectification module and the output power distribution module and is used for controlling the power distribution state and adjusting the output voltage of the rectification module according to the state data and the sensing data so as to control the power distribution condition and the illumination of each lighting load;

wherein, output distribution module includes anodal output distribution unit and negative pole output distribution unit, anodal output distribution unit's one end is connected rectifier module's anodal output, negative pole output distribution unit's one end is connected rectifier module's negative pole output, anodal output distribution unit's the other end with at least one lighting load formation different illumination return circuits are connected respectively to negative pole output distribution unit's the other end.

2. The lighting control system of claim 1, wherein the detection module comprises an input detection module and an output detection module, the input detection module connecting the input power distribution module and the control module, the output detection module connecting the output power distribution module, the sensing device and the control module.

3. The lighting control system of claim 2, wherein the input detection module comprises an input detection unit and an input monitoring unit, and the input detection unit and the input monitoring unit are both connected to the input power distribution module and the control module.

4. The lighting control system of claim 2, wherein the output detection module comprises a switching value detection unit, an insulation detection unit and a dc detection unit, the switching value detection unit, the insulation detection unit and the dc detection unit are all connected to the output power distribution module and the control module, and the switching value detection unit is further connected to the sensing device.

5. The lighting control system of claim 1, further comprising a status switch, the status switch coupled to the detection module.

6. The lighting control system of claim 1, further comprising an isolation converter and an emergency power distribution module, the emergency power distribution module connecting an emergency power source, the isolation converter, the detection module, the control module and the lighting load for powering the lighting load when the main ac power source is powered off.

7. The lighting control system of claim 6, further comprising an auxiliary power supply connected to the main AC power source, the emergency power source, the control module, and the detection module.

8. The lighting control system of any one of claims 1-7, further comprising a lightning protection module coupled to the input power distribution module, the output power distribution module, and the detection module.

9. The lighting control system of any one of claims 1-7, further comprising a wireless communication module, the wireless communication module connecting the control module with a control center server.

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