CN113329541B - Lighting control system - Google Patents

Lighting control system Download PDF

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Publication number
CN113329541B
CN113329541B CN202110537827.6A CN202110537827A CN113329541B CN 113329541 B CN113329541 B CN 113329541B CN 202110537827 A CN202110537827 A CN 202110537827A CN 113329541 B CN113329541 B CN 113329541B
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module
power distribution
output
lighting
input
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CN113329541A (en
Inventor
王静
赵宇明
刘通
刘国伟
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Shenzhen Power Supply Bureau Co Ltd
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Shenzhen Power Supply Bureau Co Ltd
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    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B45/00—Circuit arrangements for operating light-emitting diodes [LED]
    • H05B45/30—Driver circuits
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J1/00—Circuit arrangements for dc mains or dc distribution networks
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
    • H02M7/00—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output
    • H02M7/02—Conversion of ac power input into dc power output without possibility of reversal
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B45/00—Circuit arrangements for operating light-emitting diodes [LED]
    • H05B45/50—Circuit arrangements for operating light-emitting diodes [LED] responsive to malfunctions or undesirable behaviour of LEDs; responsive to LED life; Protective circuits
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B47/00—Circuit arrangements for operating light sources in general, i.e. where the type of light source is not relevant
    • H05B47/10—Controlling the light source
    • H05B47/175—Controlling the light source by remote control
    • H05B47/19—Controlling the light source by remote control via wireless transmission
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B20/00—Energy efficient lighting technologies, e.g. halogen lamps or gas discharge lamps
    • Y02B20/40—Control techniques providing energy savings, e.g. smart controller or presence detection

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Circuit Arrangement For Electric Light Sources In General (AREA)

Abstract

The application relates to 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 and sensing data and sending the state data and the sensing data to the control module; the control module is connected with the input power distribution module, the rectifier module and the output power distribution module and used for controlling the power distribution state and adjusting the output voltage of the rectifier module according to the state data and the sensing data, so that the power distribution condition and the illumination of each lighting load are controlled, the brightness is reasonably controlled, the energy is saved, the driver structure of a single lighting load can be simplified, and the service life of the lighting load can be prolonged.

Description

Lighting control system
Technical Field
The application relates to the technical field of lighting control, in particular to a lighting control system.
Background
The lighting system is important and indispensable as a production auxiliary system in industrial plants, transformer substations and other similar places, and is an important guarantee for ensuring stable production and safe operation. The excellent illumination can enable technicians to discover the defects of each device in time, eliminate accident potential, improve the production and maintenance efficiency, and require high light brightness, uniform light, no glare and the like.
Currently, light-Emitting Diode (LED) lighting loads which are widely used, have good dimming linearity and long service life are all driven by dc power, so when ac mains power is used for power supply, a rectifier or other adapters are generally required to be added to the lighting loads in a conventional lighting system. Through the technical development, when the intelligent control is carried out for energy conservation and emission reduction, a single lamp controller with a communication module is additionally arranged on the lighting load, or the lighting load is controlled in a wired or carrier wave mode and the like, so that the control is complex, and the practical efficiency is low.
Disclosure of Invention
In view of the above, there is a need for a lighting control system that uses dc centralized power distribution and control of lighting loads.
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 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 that the power distribution condition and the illumination of each lighting load are controlled.
In one embodiment, 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 end of the rectifier module, one end of the negative output power distribution unit is connected to the negative output end 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 embodiment, the detection module includes an input detection module and an output detection module, the input detection module connects the input power distribution module and the control module, and the output detection module connects 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, and the input detection unit and the input monitoring unit are both connected to the input power distribution module and the control module.
In one embodiment, the output detection module includes 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.
In one embodiment, the lighting control system further includes a state switch, and the state switch is connected to the detection module.
In one embodiment, the lighting control system further includes an isolation converter and an accident power distribution module, where the accident power distribution module is connected to an emergency power supply, the isolation converter, the detection module, the control module, and the lighting load, and is configured to supply power to the lighting load when the main ac power supply loses power.
In one embodiment, the lighting control system further includes an auxiliary power supply, and the auxiliary power supply is connected to the main ac power supply, the emergency power supply, the control module, and the detection module.
In one embodiment, the 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 lighting control system further includes a wireless communication module, and the wireless communication module is connected with the control module and the control center server.
Above-mentioned lighting control system adopts rectifier module to become the direct current with main alternating current power supply rectification and concentrates on supplying power to all lighting load in the system for need not to install the rectifier additional on single lighting load, simultaneously, control module acquires illumination distribution state in real time through collection module and carries out fault monitoring, acquires the reasonable control luminance energy saving of sensing data feedback, can not only simplify single lighting load's driver structure, can also increase lighting load's working life.
Drawings
FIG. 1 is a system block diagram of a lighting control system in one 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 one embodiment.
Detailed Description
In order to make the objects, technical solutions and advantages of the present application more clearly understood, the present application is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present application and are not intended to limit the present application.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used in the description of the present application herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application.
It will be understood that, as used herein, the terms "first," "second," and the like may be used herein to describe various elements, but these elements are not limited by these terms. These terms are only used to distinguish one element from another. For example, a first resistance may be referred to as a second resistance, and similarly, a second resistance may be referred to as a first resistance, without departing from the scope of the present application. The first resistance and the second resistance are both resistances, but they are not the same resistance.
It is to be understood that "connection" in the following embodiments is to be understood as "electrical connection", "communication connection", and the like if the connected circuits, modules, units, and the like have communication of electrical signals or data with each other.
As used herein, the singular forms "a", "an" and "the" may include the plural forms as well, unless the context clearly indicates otherwise. It will be further understood that the terms "comprises/comprising," "includes" or "including," etc., specify the presence of stated features, integers, steps, operations, components, parts, or combinations thereof, but do not preclude the presence or addition of one or more other features, integers, steps, operations, components, parts, or combinations thereof.
In one embodiment, as shown in fig. 1, there is provided a lighting control system comprising: the power distribution system comprises 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, wherein the input power distribution module 110 is connected with a main alternating current power supply and the rectification module 120, the rectification module 120 is connected with the output power distribution module 130, and the output power distribution module 130 is connected with more than two lighting loads and used for centralized direct current power supply; the detection module 140 is connected to the input power distribution module 110, the output power distribution module 130, the control module 150 and the sensing device, and is configured to obtain state data of the input power distribution module 110 and the output power distribution module 130 and sensing data of the sensing device, and send the state data to the control module 150; the control module 150 is connected to the input power distribution module 110, the rectifying module 120 and the output power distribution module 130, and is configured to control a power distribution state according to the state data and the sensing data and adjust an output voltage of the rectifying module 120, so as to control a power distribution condition and an illumination of each lighting load.
Specifically, the input power distribution module 110 is composed of a switching element, and is connected to a main ac power source to obtain an ac current, which is provided to the rectification module 120 for rectification, and the switching element can also cut off the power-taking loop in case of a fault. The switching element may be an air switch, an ac contactor, a breaker, a relay, or other switching elements. In addition, the input power distribution module 110 may be composed of a single one 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 requirements. 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 a main ac power source and a rectifier module 120.
The input source of the main alternating current power supply for providing alternating current is not unique, and the power supply can be accessed according to the actual application scene of the lighting control system. For example, in the case that the lighting control system is applied to a substation, a main AC power supply may be led to an AC380V AC power supply from an AC power panel on site, a three-phase four-wire system may be used for the connection, and the input power distribution module 110 is provided with switching elements on three live wires and one zero wire thereof respectively to distribute power to the rectifier module 120.
Similarly, the output power distribution module 130 is also composed of a switching element for connecting and outputting the dc current output from the rectifying 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. The selectable types and combinations of the switching elements in the output power distribution module 130 are the same as those of the input power distribution module 110, and can be set according to the situation of the lighting circuit actually set by the lighting load, which is not described herein.
The number of the lighting loads is set according to the requirements of practical application scenes, and at least the high illumination of lighting areas and no dead angle are guaranteed. The output power distribution module 130 is not only connected with the lighting loads to form a lighting loop for centralized power supply, but also can be used for supplying power to each lighting load by forming the lighting loop, or supplying power to the lighting loads by forming the lighting loop in different regions, or supplying power to the lighting loops by connecting the lighting loads at intervals, without limitation, and can be designed and adjusted according to practical application. As shown in fig. 2, in one embodiment, the output power distribution module 130 employs 3 lighting circuits, each of which is connected in series with a relay and an air switch, for example, the lighting circuit 1 includes a relay KM1 and an air switch Q2.
The lighting load is a device capable of adjusting illuminance according to the magnitude of the input voltage, and may be an adjustable lighting device having a dimming function, for example, an LED lamp, or a general lighting device to which a dimming switch, a transformer, and the like are added, for example, an incandescent lamp, a fluorescent lamp, and the like, without being limited thereto.
Further, the rectifying module 120 is a module capable of converting ac power into dc power, and the rectifying module 120 rectifies ac current in the main ac power into dc current, and then connects the dc current to the lighting load through the lighting circuit to realize centralized dc power supply. The number of the rectifier modules 120 is not unique, and can be set according to the number of the lighting circuits in an actual application scene. For example, one rectifier module 120 may provide direct current to all lighting circuits, each lighting circuit may be connected to one rectifier module 120 to obtain direct current, or the rectifier modules 120 may be arranged in different regions to provide direct current to the lighting circuits in different regions. In addition, the number of the rectifier modules 120 is set to satisfy the rated power of all the lighting loads. In one embodiment, the number of rectifier modules 120 is greater than the rated load capacity by one as a redundancy to ensure that the system will still have sufficient on-load capability and operate properly when any one rectifier module 120 is taken offline due to a fault.
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 for feedback to the control module 150. The content of the state data is not exclusive and may include an open/close state of the switching element, a voltage/current value of the distribution line, an insulation state of the distribution line, and the like. The control module 150 determines whether the loops of the input power distribution module 110 and the output power distribution module 130 are in a normal operating state according to the received state data, and if the obtained state data is abnormal, determines that the corresponding loop has a fault, controls the switching element on the loop to be disconnected, and ensures that other loops 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 is also connected to the relays KM1, KM2, KM3, and KM4 of the output power distribution module 130.
Further, the detection module 140 is further connected to a sensing device to obtain field sensing data and feed back the field sensing data to the control module 150 to control the lighting condition. The content of the sensing data is not unique, and the sensing data can be obtained according to a sensing device arranged in an actual application scene, for example, according to different types of sensors, the sensing data can be an ambient illuminance value fed back by an ambient light sensor arranged outdoors, a sound quantity fed back by a sound sensor, a data for detecting whether a person is present such as a thermal infrared human body sensor, and the like; according to different installation positions of the sensors, sensing data of different areas of an application scene can be obtained. In one embodiment, as shown in fig. 2, the detection module 140 may further be connected to an image capturing device, such as a biological camera, to obtain data such as the number or density of people in the frame fed back by the image capturing device. In another embodiment, as shown in FIG. 2, the detection module 140 may also be connected to a fire alarm system to cancel the anti-trip signal.
Specifically, the control module 150 determines whether the illuminance of the corresponding lighting load needs to be controlled by adjusting the output voltage of the rectifying module 120 according to the acquired sensing data. For example, when the acquired ambient illuminance value gradually increases, the output voltage of the rectifying module 120 is adjusted to gradually decrease to decrease the illuminance of the lighting load, when the acquired ambient illuminance value gradually decreases, the output voltage of the rectifying module 120 is adjusted to gradually increase to increase the illuminance of the lighting load, and of course, when the illuminance of the lighting load increases to the maximum illuminance threshold, the output voltage of the rectifying module 120 is stopped to increase the illuminance of the lighting load. For example, as shown in fig. 2, in one embodiment, the control module 150 is a dc cabinet main control unit DCU, and is connected to the rectifying module 120 to adjust the output voltage to reduce the illuminance of the lighting load connected to the lighting circuits 1, 2 and/or 3.
Further, the control module 150 may also control the power distribution status of each lighting circuit according to the acquired sensing data, for example, control the output power distribution module 130 to disconnect the lighting circuit to stop lighting when the acquired ambient illuminance value reaches an illuminance value at which the lighting load may be turned off. For example, when the sensing data of the image capturing device and the device such as the thermal infrared human body sensor indicates that a person enters the work, the output power distribution module 130 is controlled to turn on the illumination loop at the corresponding position to provide illumination, and when the sensing data of the image capturing device and the device such as the thermal infrared human body sensor indicates that the person leaves, the output power distribution module 130 is controlled to turn off the illumination loop at the corresponding position to stop illumination. For example, as shown in fig. 2, in an embodiment, the control module 150 connects the dc cabinet main control unit DCU to the control end of the relay KM1-4 of the output power distribution module 130, and when the acquired ambient illuminance value reaches an illuminance value at which the lighting load can be turned off, or when the sensed data of the image capturing device and the thermal infrared human body sensor indicate that the operator leaves, the dc cabinet main control unit DCU controls the relay KM1-4 to be turned off, so as to turn off the lighting loop to stop lighting.
In one embodiment, when the control module 150 acquires a fire-fighting non-switching signal from the fire alarm system, the output power distribution module 130 is controlled to disconnect the lighting circuit at the corresponding position to stop lighting, cut off the non-fire-fighting power supply, and reserve the power supply for the fire-fighting power supply.
Above-mentioned lighting control system adopts rectifier module 120 to become the direct current with main alternating current power supply and concentrates on supplying power to all lighting load in the system for need not to install the rectifier additional on single lighting load, simultaneously, control module 150 acquires illumination distribution state in real time through collection module 140 and carries out fault monitoring, acquires the reasonable control luminance energy saving of sensing data feedback, can not only simplify single lighting load's driver structure, can also increase lighting load's working life.
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, one end of the negative output power distribution unit 132 is connected to the negative output terminal 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 the respective lighting loads.
Specifically, the rectifying module 120 may be composed of a rectifying diode, or may be a controllable rectifying source, and the voltage after passing through the rectifying module 120 has been changed from an alternating voltage to a unidirectional pulsating direct voltage. Specifically, the internal implementation of the rectifying module 120 may be a half-wave rectifying circuit, a full-wave rectifying circuit, a bridge rectifying circuit, or a voltage-doubler rectifying circuit. Taking the rectifying module 120 as a bridge rectifier circuit as an example, the rectifying module includes four diodes connected together, and the rectified output side includes an anode output end and a cathode output end. As shown in fig. 3, the explanation is made by using a positive output terminal or a negative output terminal of one rectifier module to be correspondingly connected with the positive output power distribution unit 131 or the negative output power distribution unit 132 to form a lighting circuit for each lighting load. In the present embodiment, N rectifier modules are included, and the positive output terminal #11, the positive output terminal #12 to the positive output terminal #1N of the rectifier modules are connected to the positive output power distribution unit 131, and then connected to the negative lighting load 11, the lighting load 12 to the lighting load 1N through the positive output power distribution unit 131. The cathode output terminals #21, #22 and #2N are connected to the cathode output power distribution unit 132, and then connected to the negative illumination loads 21, 22 and 2N through the cathode output power distribution unit 132.
The lighting loads 11, 12, and 1N connected to the positive output power distribution unit 131, and the negative lighting loads 21, 22, and 2N connected to the negative output power distribution unit 132 may be lighting loads arranged at intervals or lighting loads in different areas.
In this embodiment, the positive output and the negative output of the rectifying circuit 120 are respectively distributed to supply power to the lighting loads, so that the resource utilization efficiency in a large-scale lighting scene can be improved, and the strategy of connecting the lighting loads at intervals and in regions can also ensure that the situation of large-area no-lighting cannot be generated under the condition of a fault of a certain loop.
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 connects the input power distribution module 110 and the control module 150, and the output detection module 142 connects the output power distribution module 130, the sensing device and the control module 150.
Specifically, the input detection module 141 is connected to the input power distribution module 110 to detect the power parameter measured by the ac before being input to the rectification module 120, and collects the state data of the switching elements of the input power distribution module 110, and feeds the data back to the control module 150 to adjust the power distribution state of the ac side for monitoring and protection.
Further, the output detection module 142 is connected to the output power distribution module 130 to detect the current and voltage value of the dc voltage after the output of the rectification module 120, and collect the state data of the switching elements of the output power distribution module 130, and feed back the state data to the control module 150 to adjust the power distribution state of the dc side for monitoring and protection. In addition, the output detection module 142 is connected to the sensing device to obtain the field sensing data and feed back the field sensing data to the control module 150 to control the lighting condition.
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 measurement device for collecting power parameters of the distribution line input to the power distribution module 110. The input detection unit can be an alternating current detection intelligent ammeter, and can also be a circuit capable of realizing measurement of alternating current power parameters. The specifically collected power parameters may be voltage and current values in the loop, and may also be odd, even, total harmonic, subharmonic distortion rate, and the like. The input detection unit collects the power parameters and sends the power parameters 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 that collects the on/off state of the switching element of the input power distribution module 110, and may be a switching value collection board card or a switching value detection circuit. The open/close state may be an action signal of a fault trip of the circuit breaker or the air switch, or an alarm signal sent after the fuse is fused. The input monitoring unit collects the on/off states of the switching values of the input power distribution module 110 and then sends the on/off states to the control module 150 to monitor whether the input power distribution side has a fault.
In one embodiment, as shown in fig. 3, the output detection module 142 includes a switching value detection unit, an insulation detection unit, and a dc detection unit, all of which are connected to the output power distribution module 130 and the control module 150, and the switching value detection unit is further connected to a sensing device.
Specifically, the switching value detecting unit is connected to a switching value monitoring device of which the output power distribution module 130 acquires the on/off state of the switching element, and sends the switching value monitoring device to the control module 150 to monitor whether the input power distribution side fails. Specifically, the input monitoring unit and the output monitoring unit can be implemented by the same device, which is not described herein. In addition, the switching value monitoring unit is connected to the sensing device to obtain sensing data and send the sensing data to the control module 150 to control the lighting condition.
The dc detection unit is a measuring device for collecting and outputting power parameters of the distribution line of the distribution module 130, and sends the parameters to the control module 150 as a basis for monitoring and protecting the lighting loop. The direct current detection unit can be a direct current detection intelligent ammeter and can also be a circuit capable of realizing direct current power parameter measurement. For example, as shown in fig. 2, in one embodiment, the dc detection units are IS1-4, which are respectively connected to the power lines of 3 lighting loops and one backup lighting loop.
The insulation detection unit is connected to the power transmission line of the output power distribution module 130, detects leakage current and insulation resistance to ground of the lighting circuit, and uploads fault information to the monitoring module 150 when poor branch insulation is monitored.
In this embodiment, the control module 150 obtains the power distribution states of the ac side and the dc side in real time through the input acquisition module 141 and the output acquisition module 142 to perform fault monitoring, and obtains the sensing data to feed back and reasonably control the brightness and save energy.
In one embodiment, as shown in fig. 2, the lighting control system further includes a state switch, and the state switch is connected to the detection module 140.
Specifically, the state switch is connected to the switching value detection unit of the detection module 140, and can be switched to a manual or automatic switching state. When the state change-over switch is in an automatic on-off state, the switching value detection unit feeds back the automatic on-off state to the control module 150, and the control module 150 adjusts the power distribution state and the output voltage normally. When the state switch is in the manual switching state, the switching value detecting unit feeds back the manual switching state to the control module 150, and the control module 150 stops adjusting the power distribution state and the output voltage. In this embodiment, the state change-over switch is added, so that the normal lighting requirement of the application scene can be ensured when the control system fails.
In one embodiment, as shown in fig. 2, the lighting control system further includes an isolation converter and an emergency power distribution module, where the emergency power supply, the isolation converter, the detection module 140, the control module 150 and the lighting load are connected to the emergency power supply, and are configured to supply power to the lighting load when the main ac power supply loses power.
Specifically, the emergency power distribution module is composed of a switch element, is connected with an emergency power supply to obtain direct current, and is used for supplying power to an illumination load to form an emergency illumination loop when a main alternating current power supply loses power. The selection of the switching elements is consistent with the input power distribution module 110 and will not be described herein. The accident power distribution module comprises a bypass switch which is an air switch and can be manually switched on when the control module 150 breaks down, power is supplied to an accident lighting loop, and basic illumination is guaranteed. For example, as shown in fig. 2, in an 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 source, the other end of the air switch Q6 is connected to the isolated converter, one end of the relay KM6 is connected to the isolated converter, the other end of the relay KM6 is connected to the emergency lighting circuit and the standby emergency lighting circuit, an air switch Q8 and an air switch Q9 are connected in series in the emergency lighting circuit and the standby emergency lighting circuit, and an air switch Q7 is a bypass switch.
The emergency power supply is a direct current power supply for providing accidents, has a non-unique input source, and can be accessed according to the power supply in the practical application scene of the lighting control system. For example, taking the application of the lighting control system to a substation as an example, the emergency power supply can be led into a DC power supply of 110V DC from a secondary DC screen on site. Furthermore, the isolation converter is connected in series in the emergency lighting loop and used for protecting, lightning-protecting and filtering the loop.
Further, the direct current detection unit IS connected with a distribution line of the accident power distribution module through the IS5 to collect power parameters, such as voltage and current values and the like; the switching value detection unit is connected with a switching element of the accident power distribution module to acquire the switching state of the switching element, and the switching state is sent to the control module 150 to be used as a basis for monitoring and protecting the accident lighting loop. The control part of the switching element of the power distribution module is connected to the control module 150, and when an accident lighting circuit has a fault, the control switching element thereof cuts off the circuit, thereby preventing damage to the lighting load.
In the embodiment, the emergency lighting circuit is arranged, so that the basic illumination of the site can be ensured when the main alternating current power supply loses power.
In one embodiment, as shown in fig. 2, the lighting control system further comprises an auxiliary power source connected to the main ac power source, the emergency power source, 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 designed redundantly, 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 source obtains the external power source to provide the operating power source for the lighting control system, so as to ensure the normal operation of the system.
In one embodiment, as shown in fig. 3, the lighting control system further includes a lightning protection module coupled to the input power distribution module 110, the output power distribution module 130, and the detection module 142. The lightning protection module is used for releasing instantaneous heavy current to ground when suffering from lightning stroke so as to ensure the safety of electric equipment. The detection module 142 is connected to the lightning protection module for monitoring to ensure good performance.
In one embodiment, as shown in fig. 3, the lighting control system further includes a wireless communication module 170, and the wireless communication module 170 connects the control module 150 with the control center server. Specifically, the wireless communication module 170 transmits the status data and the sensing data received by the control module 150 from the acquisition module 140 to the control center server for storage. The communication protocol that can be used by the wireless communication module 170 is not unique, and may be GPGS, wiFi, or TCP/IP, which is not limited in this respect. In this embodiment, the data that the lighting control system gathered are saved, make things convenient for fortune dimension personnel to monitor at any time.
The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above-mentioned embodiments only express several embodiments of the present application, and the description thereof is specific and detailed, but not to be understood as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the concept of the present application, and these are all within the scope of protection of the present application. Therefore, the protection scope of the present patent shall be subject to 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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