WO2023035749A1

WO2023035749A1 - Control system for single-phase street lamp

Info

Publication number: WO2023035749A1
Application number: PCT/CN2022/103754
Authority: WO
Inventors: 李东声
Original assignee: 天地融科技股份有限公司
Priority date: 2021-09-13
Filing date: 2022-07-04
Publication date: 2023-03-16
Also published as: CN113853050A

Abstract

A control system for a single-phase street lamp, relating to the technical field of electronics. The system comprises: an alternating-current transformer, a direct-current converter, a control switch, a PLC main control module, a first PLC lamp control module, and a second PLC lamp control module. The control switch receives a first witching instruction sent by the PLC main control module to connect an output end of the alternating-current transformer to an output end of the control switch, and receives a second switching instruction to connect an output end of the direct-current converter to the output end of the control switch. The first PLC lamp control module receives a control signal sent by the PLC main control module, and determines whether a component to be controlled is connected to the first PLC lamp control module; and if yes, an operation is performed according to a control instruction, or otherwise, the control signal is sent to the second PLC lamp control module. When the component to be controlled is connected to the second PLC lamp control module, the second PLC lamp control module performs operation according to the control instruction.

Description

A control system for single-phase street lamps

Cross References to Related Applications

This disclosure claims the priority of the Chinese patent application with application number 202111069680.9 and titled "A Control System for Single-phase Street Lamp" filed on September 13, 2021, the entire contents of which are incorporated by reference in this disclosure.

technical field

The present disclosure relates to the field of electronic technology, in particular to a control system for single-phase street lamps.

Background technique

The role of urban street lighting is to create a good viewing environment for pedestrians and drivers of various vehicles, so as to achieve the purpose of ensuring traffic safety, improving transportation efficiency, facilitating people's lives, reducing crime and beautifying the urban environment.

However, the street lamp lighting system in the related art uses a dedicated transformer and a dedicated independent line for power supply, which can only be controlled by a segmented overall switch, and cannot be switched or dimmed independently; The power is cut off during the day, so it cannot provide power for other pole-holding applications during the day; in addition, street lights in related technologies need manual inspection, which is inconvenient for maintenance.

Contents of the invention

This disclosure provides a single-phase street lamp control system to solve the problem of independent switch control and dimming control of street lamps in the related art, the problem that street lamps cannot supply power for pole applications due to safety concerns, and street lamps need manual inspection. The problem.

The present disclosure provides a single-phase street lamp control system, including: an AC transformer, a DC converter, a control switch, a PLC main control module, a first PLC light control module, a second PLC light control module, a first isolator and a second PLC light control module. Two isolators; the first output end of the AC transformer is connected to the first input end of the control switch, and the second output end of the AC transformer is connected to the input end of the DC converter; the DC converter The output end of the PLC main control module is connected to the second input end of the control switch; the control end of the PLC main control module is connected to the control end of the control switch; the signal end of the PLC main control module is connected to the first PLC The input end of the light control module; the input end of the first PLC light control module is connected to the output end of the control switch; the input end of the second PLC light control module is connected to the output end of the control switch; the The output end of the first PLC light control module is connected to the input end of the second PLC light control module; the first isolator is arranged between the output end of the control switch and the signal end of the PLC main control module The L line between; the second isolator is set on the L line between the signal end of the PLC main control module and the output end of the first PLC light control module; the control switch receives the PLC According to the first switching instruction sent by the main control module, the output end of the AC transformer is connected to the output end of the control switch according to the first switching instruction; the control switch receives the second switching instruction sent by the PLC main control module. A switching instruction, connecting the output terminal of the DC converter to the output terminal of the control switch according to the second switching instruction; the PLC main control module is used to send control via the signal terminal of the PLC main control module signal, wherein the control signal includes the identifier of the component to be controlled and a control instruction; the first PLC light control module is used to receive the control signal and determine whether the component to be controlled corresponding to the identifier of the component to be controlled is The components connected to the first PLC light control module, if yes, operate according to the control instruction; if not, send the control signal to the second through the output terminal of the first PLC light control module The input terminal of the PLC light control module; the second PLC light control module is used to receive the control signal and determine whether the component to be controlled corresponding to the identification of the component to be controlled is connected to the second PLC light control module The component, if so, operates in accordance with said control instructions.

Wherein, the first PLC light control module includes a first control unit, a first light control unit and a first expansion unit, and the first control unit is connected to the first light control unit and the first expansion unit; The first control unit is used to determine whether the control signal is a light control signal or a pole-holding application signal, and if it is a light-control signal, send the control command to the first light-control unit; if it is a pole-holding application signal signal, the control command is sent to the first expansion unit; the first light control unit is connected to the first street lamp component, and is used to perform the light control operation according to the control command; the first expansion unit is connected to the second A pole application component, configured to perform corresponding operations according to the control instructions.

Wherein, the first PLC light control module further includes: a second control unit; the second control unit is configured to send the control signal to the input terminal of the second PLC light control module.

Wherein, the second PLC light control module includes a third control unit, a second light control unit and a second expansion unit, and the third control unit is connected to the second light control unit and the second expansion unit; The third control unit is used to determine whether the control signal is a light control signal or a pole-holding application signal, and if it is a light-control signal, send the control command to the second light-control unit; if it is a pole-holding application signal signal, then send the control signal to the second extension unit; the second light control unit is connected to the second street lamp component, and is used to perform the light control operation according to the control instruction; the second extension unit is connected to the second Two pole application components, configured to perform corresponding operations according to the control instructions.

Wherein, the system further includes: a third isolator; the third isolator is set on the L line between the signal end of the first PLC light control module and the output end of the second PLC light control module; the first The second PLC light control module further includes: a fourth control unit; the fourth control unit is configured to send the control signal to an input terminal of a subsequent PLC light control module.

Wherein, the light control operation includes but not limited to: street light on operation, street light off operation, street light dimming operation, voltage detection, current detection and fault detection.

Wherein, the system also includes: a street lamp management platform; the street lamp management platform is used to send management instructions to the PLC main control module; the PLC main control module sends through the signal terminal of the PLC main control module in the following manner Control signal: the PLC main control module is specifically configured to receive the management instruction, and send a control signal through the signal terminal of the PLC main control module according to the management instruction.

The single-phase street lamp control system provided by this disclosure solves the problems of independent switch control and dimming control of street lamps in the related art, realizes flexible energy consumption management; solves the safety hazards of street lamps in the related art (220V AC power supply caused by safety hazards) ) The problem that power failure during the day cannot supply power for the pole-holding application; solves the security communication problem of the street lamp pole-holding application in the related technology; solves the problem that the street lamp needs manual inspection in the related technology.

Additional aspects and advantages of the disclosure will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the disclosure.

Description of drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present disclosure, the following will briefly introduce the drawings that need to be used in the description of the embodiments. Obviously, the drawings in the following description are only some embodiments of the present disclosure. For Those of ordinary skill in the art can also obtain other drawings based on these drawings on the premise of not paying creative work.

Fig. 1 is a schematic structural diagram of a control system for a single-phase street lamp provided by an embodiment of the present disclosure.

Detailed ways

The technical solutions in the embodiments of the present disclosure are clearly and completely described below in combination with the accompanying drawings in the embodiments of the present disclosure. Obviously, the described embodiments are only some of the embodiments of the present disclosure, not all of them. Based on the embodiments of the present disclosure, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present disclosure.

Embodiments of the present invention will be further described in detail below in conjunction with the accompanying drawings.

Fig. 1 is a schematic structural diagram of a control system for a single-phase street lamp provided by an embodiment of the present disclosure. Referring to Fig. 1, the control system for single-phase street lamps provided by the embodiment of the present disclosure includes:

AC transformer, DC converter, control switch, PLC main control module, first PLC light control module, second PLC light control module, first isolator and second isolator.

The first output terminal of the AC transformer is connected to the first input terminal of the control switch, and the second output terminal of the AC transformer is connected to the input terminal of the DC converter.

The output end of the DC converter is connected to the second input end of the control switch.

The control terminal of the PLC main control module is connected to the control terminal of the control switch.

The signal end of the PLC main control module is connected to the input end of the first PLC light control module.

The input end of the first PLC light control module is connected to the output end of the control switch.

The input end of the second PLC light control module is connected to the output end of the control switch.

The output end of the first PLC light control module is connected to the input end of the second PLC light control module.

The first isolator is arranged on the L line between the output end of the control switch and the signal end of the PLC main control module.

The second isolator is arranged on the L line between the signal terminal of the PLC main control module and the output terminal of the first PLC light control module.

The control switch receives the first switching instruction sent by the PLC main control module, and connects the output end of the AC transformer to the output end of the control switch according to the first switching instruction.

The control switch receives the second switching instruction sent by the PLC main control module, and connects the output end of the DC converter to the output end of the control switch according to the second switching instruction.

The PLC main control module is configured to send a control signal through a signal terminal of the PLC main control module, wherein the control signal includes an identifier of a component to be controlled and a control instruction.

The first PLC light control module is used to receive the control signal, and judge whether the component to be controlled corresponding to the identification of the component to be controlled is a component connected to the first PLC light control module, if yes, operate according to the control instruction, if not, then Send the control signal to the input end of the second PLC light control module through the output end of the first PLC light control module.

The second PLC light control module is used to receive the control signal, judge whether the component to be controlled corresponding to the component to be controlled identification is a component connected to the second PLC light control module, and if so, operate according to the control instruction.

Wherein, in some embodiments, the street lamp system of the present disclosure adopts a single-phase line for power transmission and control. It includes an AC/AC transformer, an AC/DC converter, a control switch, a PLC main control module, and at least two PLC light control modules.

in:

The AC/AC transformer is used to transform the high-voltage AC power into a single-phase AC 220V AC power supply unit for the street lighting system.

AC/DC converter, used to convert single-phase AC 220V to low-voltage DC, such as 36V.

The control switch is used to switch and switch between 220V and 36V of the main circuit of the street lamp.

PLC main control module, used to control the control switch of the main line of the route, individually or in batches to control the components connected to the PLC light control module, such as the switch and dimming of street lights, check the status of each PLC light control module, and provide safety data aisle.

PLC light control module: Receive and execute the control commands of the PLC main control module, control the components connected to the PLC light control module, report its own status information, and provide a secure data channel.

As an optional implementation of the embodiment of the present disclosure, the first PLC light control module includes a first control unit, a first light control unit and a first expansion unit, and the first control unit is connected to the first light control unit and the first expansion unit . The first control unit is configured to determine whether the control signal is a light control signal or a pole-holding application signal, and if it is a light control signal, send a control command to the first light control unit. If the signal is applied for the pole, the control command is sent to the first extension unit. The first light control unit is connected to the first street lamp component, and is used for performing light control operations according to control instructions. The first extension unit is connected to the first pole application component, and is used for performing corresponding operations according to control instructions.

As an optional implementation of the embodiment of the present disclosure, the second PLC light control module includes a third control unit, a second light control unit and a second expansion unit, and the third control unit is connected to the second light control unit and the second expansion unit . The third control unit is used to determine whether the control signal is a light control signal or a pole-holding application signal, and if it is a light control signal, send the control instruction to the second light control unit. If the signal is applied for a pole, the control signal is sent to the second extension unit. The second light control unit is connected to the second street lamp component, and is used for performing light control operations according to control instructions. The second extension unit is connected to the second pole application component, and is used for performing corresponding operations according to the control instructions.

As an optional implementation manner of the embodiment of the present disclosure, the light control operation includes but not limited to: street light on operation, street light off operation, street light dimming operation, voltage detection, current detection and fault detection. Thus, the switch control, dimming control, multi-level energy consumption management, energy consumption statistics, fault reporting, etc. of street lamps can be realized individually or in batches.

Among them, in some embodiments, each PLC light control module can be connected to a street lamp, and can also be connected to a pole application, receive and execute the control command of the PLC main control module, control the switch and dimming of the street lamp, report its own status information, and control Power supply for pole applications and secure data channel.

As an optional implementation of the embodiment of the present disclosure, the single-phase street lamp control system provided by the embodiment of the present disclosure further includes: a street lamp management platform, which is used to send management instructions to the PLC main control module. The PLC main control module sends control signals through the signal terminal of the PLC main control module in the following manner. The PLC main control module is specifically used for receiving management instructions, and sending control signals through the signal terminal of the PLC main control module according to the management instructions.

Among them, in some embodiments, the street lamp management platform is used for switching control of street lamps, dimming control, multi-level energy consumption management, energy consumption statistics, fault reporting, power control and energy consumption management of third-party pole applications, Data communication management for third-party pole applications. Specifically, the street lamp management platform can be a remote platform, which can realize the switching and switching of AC220V and DC36V on the main line of the street lamp through the PLC main control module, and at the same time communicate with the PLC light control module based on the power line carrier to realize the lighting and dimming of the street lamp . The main circuit of the street light realizes uninterrupted power supply throughout the day, and the PLC light control module provides power and data communication services for various pole applications. In this way, flexible energy efficiency management of street lamps, status self-checking, uninterrupted power supply and data channels for pole applications can be realized, and the entire communication system adopts security encryption technology. At this time, the PLC main control module is used to receive and execute the control instructions of the street light management platform, control the control switch of the main line of the route, control the switch and dimming of street lights individually or in batches, check the status of each PLC light control module and report The street light management platform controls the power supply of the pole application and provides a secure data channel.

When working, after the first PLC light control module receives the control signal sent by the PLC main control module, it can judge whether the component to be controlled corresponding to the component to be controlled in the control signal is a component connected to the first PLC light control module, if If yes, operate according to the control instruction. If not, the control signal is sent to the input end of the second PLC light control module through the output terminal of the first PLC light control module, so that the second PLC light control module receives the control signal and judges the identification of the component to be controlled in the control signal Whether the corresponding component to be controlled is a component connected to the second PLC light control module, and if so, operate according to the control instruction. At this time, as an optional implementation manner of the embodiment of the present disclosure, the first PLC light control module further includes: a second control unit, and the second control unit is configured to send a control signal to an input terminal of the second PLC light control module.

Among them, in some embodiments, the present disclosure transmits the control signal in this way, the control signal can be transmitted from the PLC main control module to each PLC light control module in turn, and the signal is relayed via each PLC light control module , to ensure the stability of the signal, so as to realize long-distance transmission and control.

Wherein, in some embodiments, the function of the first isolator is to ensure that the PLC communication between the PLC main control module and the first control unit of the first PLC light control module is not disturbed by external signals, and the synchronization does not interfere with external communication. Similarly, the function of the second isolator is to ensure that the PLC communication of the third control unit of the second PLC light control module is not interfered by external signals, and the synchronization does not interfere with external communication.

Of course, in order to ensure the stable transmission of signals, if there are other PLC light control modules after the second PLC light control module, as an optional implementation mode of the embodiment of the present disclosure, the single-phase street lamp provided by the embodiment of the present disclosure The control system also includes: a third isolator, the third isolator is arranged on the L line between the signal end of the first PLC light control module and the output end of the second PLC light control module, and the second PLC light control module also includes : the fourth control unit, the fourth control unit is used to send the control signal to the input end of the subsequent PLC light control module. Wherein, the function of the third isolator is to ensure that the PLC communication of the PLC light control module after the second PLC light control module is not disturbed by external signals, and the synchronization does not interfere with external communication.

As an optional implementation of the embodiment of the present disclosure, when data transmission is performed between the pole holding application and the PLC main control module, a secure channel can be established based on the PLC communication channel provided by the present disclosure to ensure the security of data transmission, for example, The session key is negotiated between the pole holding application and the PLC main control module or the street lamp management platform, and when transmitting data, the session key is encrypted for transmission.

It can be seen that, the control system of the single-phase street lamp provided by the embodiment of the present disclosure adopts PLC as the wired communication mode, and no additional wiring is required. At the same time, it supports 220V AC and 36V DC power supply as a communication carrier. The system can use 220V AC power supply at night, and 36V DC power supply without interruption during the day. It can realize independent switching and independent dimming control of street lamps, and realize flexible energy management. For example, street lamps operate at low power consumption from 12 o'clock in the evening to 6 o'clock in the morning. In addition, it can also provide 36V DC/220V AC power supply for pole applications. At the same time, it can provide a data communication channel for pole holding applications. Furthermore, the single-phase street lamp control system provided by the embodiments of the present disclosure can realize a self-inspection function and report the abnormal state of the street lamp, instead of manual inspection.

Therefore, the single-phase street lamp control system provided by the embodiment of the present disclosure solves the problem of independent switch control and dimming control in the related art, and realizes flexible energy consumption management. It solves the problem in the related art that street lights cannot supply power for pole applications due to safety concerns (potential safety hazards caused by 220V AC power supply) during daytime power failure. The problem of safety communication in the application of street lamp holding poles in the related art is solved. The problem in the related art that street lamps need manual inspection is solved.

The above embodiments are only used to illustrate the technical solutions of the present disclosure, rather than to limit them; although the present disclosure has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: it can still be described in the foregoing embodiments Modifications to the technical solutions recorded, or equivalent replacement of some of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of each embodiment of the application, and should be included in this disclosure. within the scope of protection.

Claims

A control system for a single-phase street lamp, characterized in that it includes: an AC transformer, a DC converter, a control switch, a PLC main control module, a first PLC light control module, a second PLC light control module, a first isolator and a second PLC light control module. Two isolators;

The first output end of the AC transformer is connected to the first input end of the control switch, and the second output end of the AC transformer is connected to the input end of the DC converter;

The output end of the DC converter is connected to the second input end of the control switch;

The control end of the PLC main control module is connected to the control end of the control switch;

The signal end of the PLC main control module is connected to the input end of the first PLC light control module;

The input end of the first PLC light control module is connected to the output end of the control switch;

The input end of the second PLC light control module is connected to the output end of the control switch;

The output end of the first PLC light control module is connected to the input end of the second PLC light control module;

The first isolator is arranged on the L line between the output end of the control switch and the signal end of the PLC main control module;

The second isolator is set on the L line between the signal terminal of the PLC main control module and the output terminal of the first PLC light control module;

The control switch receives a first switching instruction sent by the PLC main control module, and connects the output end of the AC transformer to the output end of the control switch according to the first switching instruction;

The control switch receives a second switching instruction sent by the PLC main control module, and connects the output end of the DC converter to the output end of the control switch according to the second switching instruction;

The PLC main control module is configured to send a control signal through a signal terminal of the PLC main control module, wherein the control signal includes an identification of a component to be controlled and a control instruction;

The first PLC light control module is used to receive the control signal, and judge whether the component to be controlled corresponding to the component to be controlled is a component connected to the first PLC light control module, and if so, according to the If not, then send the control signal to the input terminal of the second PLC light control module through the output terminal of the first PLC light control module;

The second PLC light control module is used to receive the control signal, and judge whether the component to be controlled corresponding to the component to be controlled is a component connected to the second PLC light control module, and if so, according to the Operate the above control commands.
The system according to claim 1, wherein the first PLC light control module includes a first control unit, a first light control unit and a first extension unit, and the first control unit is connected to the first light control unit and the first expansion unit;

The first control unit is used to determine whether the control signal is a light control signal or a pole holding application signal, and if it is a light control signal, send the control command to the first light control unit; if it is a pole holding applying a signal, sending the control command to the first expansion unit;

The first light control unit is connected to the first street lamp component, and is used to perform a light control operation according to the control instruction;

The first extension unit is connected to the first pole application component, and is used for performing corresponding operations according to the control instructions.
The system according to claim 2, wherein the first PLC light control module further comprises: a second control unit;

The second control unit is configured to send the control signal to the input terminal of the second PLC light control module.
The system according to any one of claims 1 to 3, wherein the second PLC light control module includes a third control unit, a second light control unit and a second extension unit, and the third control unit is connected to the second light control unit and the second extension unit;

The third control unit is used to determine whether the control signal is a light control signal or a pole holding application signal, and if it is a light control signal, send the control command to the second light control unit; if it is a pole holding applying a signal, sending the control signal to the second extension unit;

The second light control unit is connected to a second street lamp component, and is used to perform a light control operation according to the control instruction;

The second extension unit is connected to the second pole application component, and is used for performing corresponding operations according to the control instructions.
The system according to claim 4, further comprising: a third isolator;

The third isolator is arranged on the L line between the signal end of the first PLC light control module and the output end of the second PLC light control module;

The second PLC light control module further includes: a fourth control unit;

The fourth control unit is configured to send the control signal to an input terminal of a subsequent PLC light control module.
The system according to any one of claims 2 to 5, wherein the light control operation includes but not limited to: street light on operation, street light off operation, street light dimming operation, voltage detection, current detection and fault detection.
The system according to any one of claims 1 to 6, further comprising: a street lamp management platform;

The street lamp management platform is used to send management instructions to the PLC main control module;

The PLC main control module sends a control signal through the signal end of the PLC main control module in the following manner:

The PLC main control module is specifically configured to receive the management instruction, and send a control signal through the signal terminal of the PLC main control module according to the management instruction.