CN112351546A - Illumination control terminal information acquisition device, system and method based on optical communication - Google Patents

Illumination control terminal information acquisition device, system and method based on optical communication Download PDF

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Publication number
CN112351546A
CN112351546A CN202011038169.8A CN202011038169A CN112351546A CN 112351546 A CN112351546 A CN 112351546A CN 202011038169 A CN202011038169 A CN 202011038169A CN 112351546 A CN112351546 A CN 112351546A
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information
signal
lamp
information acquisition
control terminal
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CN112351546B (en
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蔡健力
蔡滨锋
魏思沯
查利君
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Xiamen Iotcomm Technology Co ltd
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Xiamen Iotcomm Technology 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
    • H05B45/32—Pulse-control circuits
    • H05B45/325—Pulse-width modulation [PWM]
    • 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]
    • H05B45/10—Controlling the intensity of the light
    • H05B45/14—Controlling the intensity of the light using electrical feedback from LEDs or from LED modules
    • 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
    • H05B45/305—Frequency-control 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
    • H05B45/00—Circuit arrangements for operating light-emitting diodes [LED]
    • H05B45/30—Driver circuits
    • H05B45/345—Current stabilisation; Maintaining constant current
    • 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
    • H05B45/36—Circuits for reducing or suppressing harmonics, ripples or electromagnetic interferences [EMI]
    • 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
    • H05B45/37—Converter 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
    • H05B47/16—Controlling the light source by timing means
    • 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
    • H05B47/165—Controlling the light source following a pre-assigned programmed sequence; Logic control [LC]
    • 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
    • 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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  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Optical Communication System (AREA)
  • Circuit Arrangement For Electric Light Sources In General (AREA)

Abstract

The invention discloses an illumination control terminal information acquisition device, system and method based on optical communication, which comprises the following steps: the light receiving sensor is used for collecting modulated light signals sent by the lamp and converting the modulated light signals into electric signals; the band-pass filter is used for filtering the electric signals to obtain effective signals; the signal conditioning unit is used for amplifying and shaping the effective signal and converting the effective signal into a rectangular wave signal; the demodulation unit demodulates the rectangular wave signal according to the signal type of the modulated optical signal and analyzes the rectangular wave signal to obtain UID information of the lamp; the positioning unit is used for acquiring positioning information of the lamp; the microcontroller is used for binding the positioning information and the UID information to obtain a lamp information packet; the networking unit is used for transmitting the lamp information packet to the cloud server; digital automatic information acquisition is realized based on the optical communication technology, information copying of the lighting control terminal is realized in a non-contact manner, and the problem of information acquisition of the existing urban lighting control terminal is solved.

Description

Illumination control terminal information acquisition device, system and method based on optical communication
Technical Field
The invention relates to the technical field of urban lighting, in particular to an information acquisition device, system and method of a lighting control terminal based on optical communication.
Background
Urban lighting is rapidly developed, and effective and unified management of urban lighting assets is one of important milestones of urban lighting development conditions. In recent years, the number of urban lighting control terminals has increased exponentially, and the control is changed from early ordinary loop lighting control to single-pole street lamp lighting control, so that the functions of dimming, switching, electric parameter calling and measuring and the like of the single-pole street lamp are realized. The management of urban lighting is a big step forward again, and the lighting control terminals realize real-time measurement of street lamp information, realize visual map management based on the GIS and realize effective management of lighting assets. However, this omits an important link, and solves the information collection of the lighting assets, but does not solve the information collection of the urban lighting control terminal, see fig. 1. Therefore, it is undeniable that the premise of urban lighting management is information acquisition, and the acquisition of the information needs to invest huge manpower and capital due to the huge amount.
At present, the investment cost is limited, most of the paper documents are manually recorded on a paper document and then are recorded into a computer for management, and the error rate of the acquired information is high. To overcome this deficiency, new technologies are continuously developed in the field, and various ways of rapidly acquiring information are introduced, such as:
(1) a code scanning technology: sweep a yard technique because bar code or two-dimensional code label receive material and cost reason, are difficult to high-efficient stable the collection in the open air, and the reason is: on one hand, the labels are lost or worn due to wind, sunshine and insecure manual pasting; on the other hand, due to the reasons of trees and grasses, insufficient light, light reflection and the like, the code scanning identification time is long or the code scanning identification fails.
(2) RFID technology: the RFID label is made of anti-metal materials, so that the cost is high, and the problem of firm adhesion exists, so that the RFID label is not broken through greatly.
Obviously, there is a great progress space in the field of information acquisition of the lighting control terminal at present, and the unified management of urban lighting assets still needs to do basic work, otherwise, large manpower and capital are consumed. In order to maximize the value under the condition of limited resource investment, the efficiency of acquiring the shortage information needs to be compensated by means of a more advanced auxiliary technology.
Disclosure of Invention
In order to solve the problems, the invention provides an illumination control terminal information acquisition device, system and method based on optical communication, which can greatly improve the information acquisition efficiency of an urban illumination control terminal.
In order to achieve the purpose, the invention adopts the technical scheme that:
an illumination control terminal information acquisition device based on optical communication comprises:
the light receiving sensor is used for collecting modulated light signals sent by the lamp and converting the modulated light signals into electric signals; wherein the modulated light signal is a visible light signal;
the band-pass filter is used for filtering the electric signal and eliminating interference signals to obtain effective signals;
the signal conditioning unit is used for amplifying and shaping the effective signal and converting the effective signal into a rectangular wave signal;
the demodulation unit demodulates the rectangular wave signal according to the signal type of the modulated light signal and analyzes the rectangular wave signal to obtain UID information of the lamp;
the positioning unit is used for acquiring positioning information of the lamp;
the microcontroller is used for binding the positioning information and the UID information to obtain a lamp information packet;
and the networking unit is used for transmitting the lamp information packet to a cloud server.
Preferably, the light receiving sensor employs a single-channel photodiode.
Preferably, the light receiving sensor, the band-pass filter, the signal conditioning unit and the demodulation unit are sequentially connected, and the demodulation unit is further connected with the microcontroller; the positioning unit and the networking unit are respectively connected with the microcontroller.
Further, the microcontroller is further connected with a storage unit, and the storage unit is used for storing historical acquisition data of the lamp information packet and storing operation configuration information of the information acquisition device.
Preferably, the microcontroller is further connected with an input module, the input module is configured to select an integrated controller corresponding to an area where the lamp is located, and send an information acquisition request command to the integrated controller, and the integrated controller will command the lighting control terminal to send an information acquisition modulated light signal.
Preferably, the input module includes any one of key input, touch screen input, and voice input, or a combination of two or more of them.
Preferably, the front surface of the information acquisition device is also provided with a light acquisition window, and the light acquisition window corresponds to the position of the light receiving sensor; the light collection window and the key operation area or the screen display area of the information collection device are arranged on the same side, and the direction of the light collection window is upward.
Further, the present invention also provides an illumination control terminal information acquisition system based on optical communication, which includes any one of the above information acquisition devices, and further includes:
the lighting management platform is arranged on the cloud server;
the integrated controller is used for receiving the information acquisition request command of the information acquisition device and sending a broadcast command to the illumination control terminal according to the information acquisition request command;
the illumination control terminal is arranged on the lamp and used for sending a modulation command to the LED module of the lamp within a preset time according to the broadcast command;
the lamp is internally provided with an LED module and an LED driving power supply which can be modulated, and the LED driving power supply controls the LED module to send out a modulated optical signal carrying UID information according to the modulation instruction;
and the information acquisition device demodulates the received optical signals, analyzes the UID information, packs and binds the UID information and the positioning information and pushes the packed and bound UID information and the positioning information to the illumination management platform.
Corresponding to the information acquisition device, the invention also provides an illumination control terminal information acquisition method based on optical communication, which comprises the following steps:
collecting modulated light signals sent by a lamp, and converting the modulated light signals into electric signals; wherein the modulated light signal is a visible light signal;
filtering the electric signal, and eliminating interference signals to obtain effective signals;
amplifying and shaping the effective signal, and converting the effective signal into a rectangular wave signal;
demodulating the rectangular wave signal according to the signal type of the modulated light signal, and analyzing to obtain UID information of the lamp;
acquiring positioning information of a lamp;
binding the positioning information and the UID information to obtain a lamp information package;
and transmitting the lamp information packet to a cloud server.
The invention has the beneficial effects that:
(1) the invention solves the problem of information acquisition of the existing urban illumination control terminal, realizes digital automatic information acquisition based on the optical communication technology, realizes information modulation output by using an LED light source, and demodulates the information in a short distance, thereby realizing the information copying of the illumination control terminal in a non-contact way, avoiding manually recording numerical values, text parameter information and geographical position information, realizing the acquisition of the illumination control terminal information without errors in hundreds of percent, and laying an effective foundation for promoting the unified management of urban illumination.
(2) In the construction of the urban illumination unified management system, RFID or bar codes or two-dimensional code labels do not need to be pasted on lamp poles, the urban lamp poles are more attractive, and information is permanently accessible.
(3) The information is automatically acquired by one key, so that the accuracy of information input is greatly improved, and the manual error rate is reduced.
(4) Information acquisition efficiency can promote, removes hand-painted map, hand-written character ID information from, also need not to enter the management platform system through the later stage keyboard, uses manpower sparingly resource input cost, because improve the replenishment based on conventional lighting control system, so hardly increase the cost amount, this will reduce the municipal payment of million yuan level for the unified management construction of urban illumination.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention and not to limit the invention. In the drawings:
FIG. 1 is a prior art lighting asset information acquisition system;
FIG. 2 is a schematic diagram of a module frame of a lamp of the illumination control terminal information acquisition device based on optical communication according to the present invention;
fig. 3 is a second schematic diagram of a module frame of a lamp of the lighting control terminal information acquisition device based on optical communication according to the present invention;
FIG. 4 is a timing chart of the demodulation signal of the illumination control terminal information acquisition device based on optical communication according to the present invention;
FIG. 5 is a schematic diagram of a module framework of an information collecting device of an illumination control terminal based on optical communication according to the present invention;
fig. 6 is an operation diagram of the collecting state of the lighting control terminal information collecting device based on optical communication according to the present invention;
FIG. 7 is a schematic diagram of an information collection system of an illumination control terminal based on optical communication according to the present invention;
fig. 8 is a simplified overall flow chart of the method for collecting information from an illumination control terminal based on optical communication according to the present invention;
fig. 9 is a simplified flow chart of the data acquisition phase of the method for acquiring information of an illumination control terminal based on optical communication according to the present invention;
fig. 10 is a simplified flow chart of the networking stage of the method for collecting information from an illumination control terminal based on optical communication according to the present invention;
fig. 11 is a simplified flow chart of a positioning information collection process of the method for collecting information of an illumination control terminal based on optical communication according to the present invention;
fig. 12 is a simplified flow chart of a key operation control process of the method for collecting information of an illumination control terminal based on optical communication according to the present invention;
in the figure, 1-street lamp, 2-lamp (built-in lighting control terminal), 3-modulated light (LED light carrying modulated signal), 4-light collection window, 5-display area (liquid crystal display or touch screen), 6-key area, and 7-information collection device shell.
Detailed Description
In order to make the technical problems, technical solutions and advantageous effects of the present invention more clear and obvious, the present invention 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 invention and are not intended to limit the invention.
According to the modern urban lighting control management system topology, lighting control terminals are installed on street lamps and serve as communication transfer units through a concentrator, connection to a cloud server is achieved, and part of the lighting control terminals are directly connected to the cloud server.
The illumination control terminal is a controller with functions of dimming, turning on and off a lamp, collecting electrical parameters and the like, acts on an LED driving power supply, realizes independent control of a single-pole street lamp, and generally realizes remote control through communication modes such as PLC (power line carrier), ZigBee, RF433, LoRa, GPRS, NB-IoT and the like. The wiring topology of the lighting control terminal is illustrated in fig. 2. Each lighting control terminal is provided with a User Identification (UID), and the UID is used as a unique Identification of the lighting control terminal on the platform.
Meanwhile, in order to realize the visual map deployment of the GIS system, the geographic position information of the control terminal needs to be input, so that the finished remote lighting control system is formed. Therefore, the system contains two key data, one is UID information, the other is positioning information, the positioning information is usually represented by longitude and latitude, and only when the two parameters are obtained, the urban lighting system management platform can find the street lamp at a specific position to call the electrical parameters, so that unified management is realized.
Therefore, in order to realize that the management platform can remotely control the terminal, in the system deployment process, unique identification UID information and positioning information of the street lamp lighting control terminal need to be input into the system platform, and the UID is used as an access target object of the system platform.
In the traditional method for acquiring the street lamp position information, a positioning device is additionally arranged on each street lamp, so that the hardware cost and the labor cost are greatly increased.
As shown in fig. 5, the illumination control terminal information collecting device based on optical communication of the present invention includes:
the light receiving sensor is used for collecting modulated light signals sent by the lamp and converting the modulated light signals into electric signals; wherein the modulated light signal is a visible light signal;
the band-pass filter is used for filtering the electric signal and eliminating interference signals to obtain effective signals;
the signal conditioning unit is used for amplifying and shaping the effective signal and converting the effective signal into a rectangular wave signal;
the demodulation unit demodulates the rectangular wave signal according to the signal type of the modulated light signal and analyzes the rectangular wave signal to obtain UID information of the lamp;
the positioning unit is used for acquiring positioning information of the lamp;
the microcontroller is used for binding the positioning information and the UID information to obtain a lamp information packet;
and the networking unit is used for transmitting the lamp information packet to a cloud server.
By adopting the information acquisition device, a two-dimensional code label does not need to be attached to each lamp or an infrared sensor does not need to be installed, a positioning device does not need to be installed on each lamp, the modulated light signals sent by the lamps can be analyzed to obtain UID information only by acquiring the modulated light signals through the information acquisition device, the current positioning information is acquired through the positioning unit while the UID information is acquired, the UID information and the positioning information are bound and transmitted back to the cloud server, and efficient and accurate data acquisition and recording are realized.
In this embodiment, the light receiving sensor employs a single-channel photodiode. The demodulation unit can be realized by hardware or a microcontroller software program.
The light receiving sensor, the band-pass filter, the signal conditioning unit and the demodulation unit are sequentially connected, and the demodulation unit is further connected with the microcontroller; the positioning unit and the networking unit are respectively connected with the microcontroller.
In this embodiment, the microcontroller is further connected to a storage unit and an input module, and the storage unit is used for storing historical acquisition data of the lamp information packet and storing operation configuration information of the information acquisition device. The input module is used for selecting an integrated controller corresponding to an area where the lamp is located and sending an information acquisition request command to the integrated controller, and the integrated controller commands the lighting control terminal to send an information acquisition modulation light signal. It should be noted that, the input module of the information acquisition device may adopt any one of touch screen input and voice input or a combination of two or more than two of them, in addition to the key input mode.
As shown in fig. 6, the information collecting device housing is designed with a light collecting window for collecting the modulated light signal emitted by the street lamp; preferably, the light collection window is arranged on the front surface of the information collection device, and the light collection window corresponds to the light receiving sensor; the light collection window and the key operation area or the screen display area of the information collection device are arranged on the same side, and the direction of the light collection window is upward.
The information acquisition device is also provided with a display screen for displaying the acquired information content, viewing and confirming the acquired information, designing the operating parameters of the device and the like; the device is also provided with a key for one-key acquisition and is matched with a screen to realize menu operation; the information acquisition device is internally provided with a battery and is light and portable.
The information acquisition device of this embodiment embeds battery, button, screen, light receiving sensor, has portable characteristics, carries out operation control to information acquisition device under the street lamp, and the cooperation illumination management system can control the street lamp and send the light that carries modulated signal to enter the light acquisition window, be converted into the signal of telecommunication by light receiving sensor, demodulate and resolve microcontroller's UID signal in information acquisition device.
As shown in fig. 7, the present invention further provides an illumination control terminal information acquisition system based on optical communication, which includes any one of the above information acquisition devices, and further includes:
the lighting management platform is arranged on the cloud server;
the integrated controller is used for receiving the information acquisition request command of the information acquisition device and sending a broadcast command to the illumination control terminal according to the information acquisition request command;
the illumination control terminal is arranged on the lamp and used for sending a modulation command to the LED module of the lamp within a preset time according to the broadcast command;
the lamp is used as a luminous source, an LED module and an LED driving power supply which can be modulated are arranged in the lamp, and the LED driving power supply controls the LED module to send out a modulated optical signal carrying UID information according to the modulation instruction;
and the information acquisition device demodulates the received optical signals, analyzes the UID information, packs and binds the UID information and the positioning information and pushes the packed and bound UID information and the positioning information to the illumination management platform.
The optical communication technology utilizes the modern lighting control wiring topology to modulate light emitted by the LED module. As shown in fig. 2, the lighting control terminal receives a command issued by the management platform through any communication mode such as power line carrier, wireless, etc., and controls the output of alternating current power supply, so as to achieve the purpose of switching on and off the street lamp; and the illumination control terminal adjusts the brightness of the LED module through 0-10V or PWM and DALI signals, when 0V is output, the LED module is turned off to emit light or is reduced to the lowest brightness, and when 10V is output, the LED module outputs the maximum power to achieve the maximum brightness. In lighting system management control, this signal is stable and does not switch quickly. The street lamp controller is additionally provided with the signal modulation unit, so that the transmission of the optical signal at a longer distance is realized, and the street lamp controller has better anti-interference performance and is different from other physical light.
Such as the dimming control schematic of the lighting control terminal shown in fig. 3. The lamp comprises an LED driving power supply internally provided with a dimming unit and a constant current driver, and an illumination control terminal with a microcontroller control signal conditioning unit. The illumination control terminal can receive a command sent by the management platform through the communication module, and control the switch module to output an AC power supply to supply power to the LED driving power supply so as to realize the turning on and off of the LED street lamp, wherein the switch is used for controlling the power supply of the whole LED driving power supply; meanwhile, the microcontroller can receive the dimming command and output a dimming signal which accords with the LED driving power supply, the dimming signal controls the dimming unit of the LED driving power supply and controls the constant current source to output different constant currents, and the LED lamp module outputs different powers. The signal conditioning unit can be designed in a signal conditioning output unit of the illumination control terminal through hardware, or can be designed in a microcontroller through a software program, and aims to convert data information into a light change signal with higher frequency.
For the dimming type LED driving power supply of 0-10V, an FSK modulation mode can be adopted, but the modulation mode is not limited to the specified modulation mode, the illumination control terminal outputs a PWM signal which does not obviously influence the illumination effect, for example, the duty ratio is 90%, then the LED emits light to generate 90% of brightness, but corresponding binary data can be demodulated through the light receiving sensor.
Fig. 4 is a timing chart of the signal demodulated by the information acquisition device after the modulated light signal is emitted from the street lamp. The lighting control terminal in the street lamp is internally provided with a microcontroller, the microcontroller can express 16-system data in a serial mode, for example, 0x55 is converted into binary data, namely 2b01010101, 0 corresponds to low level, 1 corresponds to high level, if an FSK modulation mode is adopted, a dimming signal output to an LED power supply comprises frequencies of f1 and f2, the frequency of f1 represents 0, and the frequency of f2 represents 1. Because the duty cycle is controllable, so can set the duty cycle in the proportion that does not obviously influence illumination brightness, the frequency is set in the scope that personnel are difficult for the perception and LED drive power supply satisfies the response, and LED module will send fast stroboscopic dimming like this, but does not influence normal use. The emitted modulation light can be restored into hexadecimal data emitted by the illumination control terminal after being demodulated by the acquisition device. Both the PWM signal and the DALI bus can control the LED driving power supply by similarly outputting a fast switching signal, and the LED lamp can emit light (modulated light) with modulated information under the control of the lighting control terminal in a mode of not obviously influencing the lighting effect.
The optical communication adopts a narrow-band low-speed communication technology, and has lower cost and higher technology performability. After the lamp emits the light carrying the modulation information, the light stroboscopic change signal can be obtained through the light receiving sensor, and the signal is the information emitted by the lighting control terminal.
The information acquisition device of the present invention (as shown in fig. 5) can realize the demodulation function of the modulated light. The information acquisition device mainly comprises a light receiving sensor, a band-pass filter, a signal conditioning unit, a demodulation unit, a microcontroller, a networking unit, a positioning unit and a storage unit. By taking the microcontroller as a core, the information transmitted for the lighting control terminal in the lamp can be analyzed, so that the UID information and the positioning information of the lighting control terminal can be obtained.
As shown in fig. 8 to 12, corresponding to the information collecting device, the present invention further provides an information collecting method for an illumination control terminal based on optical communication, which includes the following steps:
collecting modulated light signals sent by a lamp, and converting the modulated light signals into electric signals; wherein the modulated light signal is a visible light signal;
filtering the electric signal, and eliminating interference signals to obtain effective signals;
amplifying and shaping the effective signal, and converting the effective signal into a rectangular wave signal;
demodulating the rectangular wave signal according to the signal type of the modulated light signal, and analyzing to obtain UID information of the lamp;
acquiring positioning information of a lamp;
binding the positioning information and the UID information to obtain a lamp information package;
and transmitting the lamp information packet to a cloud server.
The acquisition method is a set of flow method realized by matching the acquisition device with a modern lighting control management system. As shown in fig. 1, the lighting control terminal in the lighting control management system generally receives a control command issued by the system platform and is responsible for executing the command, and this control flow is premised on that the system platform knows map location information and ID of the designated terminal, otherwise, the designated terminal cannot perform control. The top half of fig. 7 shows a system topology before the illumination control terminal has not collected UID information, in the diagram, communication is available between the street lamps and the concentrator, and the concentrator can obtain the UID information of the control terminal in each street lamp through an algorithm, but cannot know the location information of the terminal, so that the illumination management platform cannot achieve visual management. Through the system method, the lower half of the attached figure 7, one-way communication is performed between the concentrator and the illumination control terminals, the concentrator broadcasts and sends commands to all the illumination control terminals which can be notified, then modulated light signals are sent out, the portable information acquisition device analyzes UID information for the controller, the UID information is packaged by combining position information provided by the positioning unit and is transmitted to the cloud server, and the UID and longitude and latitude information binding of the illumination control terminals is completed.
The above-mentioned collection process is shown in fig. 8: the acquisition method mainly realizes information link insertion through optical communication to form a closed loop link. The information acquisition device selects an area where a lamp post to be acquired is located in a screen through key operation, an information acquisition request is sent to a management concentrator of the area, the concentrator sends a broadcast command after receiving the command, an illumination control terminal in the area sends a modulation signal in a short time, a street lamp is controlled to send an optical signal carrying modulation information, the information acquisition device demodulates the received optical signal and analyzes UID information, the UID information and positioning information are packaged and bound, and then the information is pushed to an illumination management server, and information input actions of manual input of UID and longitude and latitude are finished, and detailed figures 9 to 12 are shown in the drawing.
The information acquisition operation process of the invention is briefly described as follows:
(1) according to the control principle of the illumination control terminal in fig. 3, a modulation hardware circuit is added to a signal conditioning unit of the illumination control terminal or a signal modulation algorithm is added to a microcontroller;
(2) the LED driving power supply dimming power supply is improved, and the dimming unit meets the signal response within 100kHZ, so that the purpose of receiving the modulation signal output from the illumination control terminal is achieved;
(3) a portable information acquisition device is manufactured according to the schematic block diagram of the attached figure 5, and the acquisition device is characterized by key input, light receiving conversion, a liquid crystal display screen and a small-sized shell structure as shown in the attached figure 6;
(4) a microcontroller arranged in the information acquisition device executes the program flow of the figure 9 to realize the information acquisition function;
(5) after the hardware facilities of the illumination management system are arranged, the information acquisition device is placed under a street lamp provided with an illumination control terminal;
(6) connecting the device to a system server through keys and a liquid crystal display on the information acquisition device, selecting an integrated controller in an area where the street lamp is located, and sending an information acquisition request command;
(7) and finishing the binding of the UID information and the positioning information to the management system server after the information acquisition device prompts the completion of the acquisition.
It should be noted that, in the present specification, the embodiments are all described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments may be referred to each other. As for the method embodiment, since it is basically similar to the apparatus embodiment, the description is simple, and the relevant points can be referred to the partial description of the apparatus embodiment.
Also, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element. In addition, those skilled in the art will appreciate that all or part of the steps for implementing the above embodiments may be implemented by hardware, or may be implemented by a program instructing associated hardware, where the program may be stored in a computer-readable storage medium, and the above-mentioned storage medium may be a read-only memory, a magnetic disk, an optical disk, or the like.
While the above description shows and describes the preferred embodiments of the present invention, it is to be understood that the invention is not limited to the forms disclosed herein, but is not to be construed as excluding other embodiments and is capable of use in various other combinations, modifications, and environments and is capable of changes within the scope of the inventive concept as expressed herein, commensurate with the above teachings, or the skill or knowledge of the relevant art. And that modifications and variations may be effected by those skilled in the art without departing from the spirit and scope of the invention as defined by the appended claims.

Claims (9)

1. The utility model provides an illumination control terminal information acquisition device based on optical communication which characterized in that includes:
the light receiving sensor is used for collecting modulated light signals sent by the lamp and converting the modulated light signals into electric signals; wherein the modulated light signal is a visible light signal;
the band-pass filter is used for filtering the electric signal and eliminating interference signals to obtain effective signals;
the signal conditioning unit is used for amplifying and shaping the effective signal and converting the effective signal into a rectangular wave signal;
the demodulation unit demodulates the rectangular wave signal according to the signal type of the modulated light signal and analyzes the rectangular wave signal to obtain UID information of the lamp;
the positioning unit is used for acquiring positioning information of the lamp;
the microcontroller is used for binding the positioning information and the UID information to obtain a lamp information packet;
and the networking unit is used for transmitting the lamp information packet to a cloud server.
2. The illumination control terminal information acquisition device based on optical communication according to claim 1, wherein: the light receiving sensor adopts a single-channel photodiode.
3. The illumination control terminal information acquisition device based on optical communication according to claim 1, wherein: the light receiving sensor, the band-pass filter, the signal conditioning unit and the demodulation unit are sequentially connected, and the demodulation unit is further connected with the microcontroller; the positioning unit and the networking unit are respectively connected with the microcontroller.
4. The illumination control terminal information acquisition device based on optical communication according to claim 3, wherein: the microcontroller is also connected with a storage unit, and the storage unit is used for storing historical acquisition data of the lamp information packet and storing operation configuration information of the information acquisition device.
5. The illumination control terminal information acquisition device based on optical communication according to any one of claims 1 to 4, characterized in that: the microcontroller is further connected with an input module, the input module is used for selecting an integrated controller corresponding to the area where the lamp is located and sending an information acquisition request command to the integrated controller, and the integrated controller commands the lighting control terminal to send out an information acquisition modulation optical signal.
6. The illumination control terminal information acquisition device based on optical communication according to claim 5, wherein: the input module comprises any one or the combination of more than two of key input, touch screen input and voice input.
7. The illumination control terminal information acquisition device based on optical communication according to claim 1, wherein: the front surface of the information acquisition device is also provided with a light acquisition window, and the light acquisition window corresponds to the position of the light receiving sensor; the light collection window and the key operation area or the screen display area of the information collection device are arranged on the same side, and the direction of the light collection window is upward.
8. An illumination control terminal information acquisition system based on optical communication, characterized by comprising the information acquisition device of any one of claims 1 to 7, and further comprising:
the lighting management platform is arranged on the cloud server;
the integrated controller is used for receiving the information acquisition request command of the information acquisition device and sending a broadcast command to the illumination control terminal according to the information acquisition request command;
the illumination control terminal is arranged on the lamp and used for sending a modulation command to the LED module of the lamp within a preset time according to the broadcast command;
the lamp is internally provided with an LED module and an LED driving power supply which can be modulated, and the LED driving power supply controls the LED module to send out a modulated optical signal carrying UID information according to the modulation instruction;
and the information acquisition device demodulates the received optical signals, analyzes the UID information, packs and binds the UID information and the positioning information and pushes the packed and bound UID information and the positioning information to the illumination management platform.
9. An illumination control terminal information acquisition method based on optical communication is characterized by comprising the following steps:
collecting modulated light signals sent by a lamp, and converting the modulated light signals into electric signals; wherein the modulated light signal is a visible light signal;
filtering the electric signal, and eliminating interference signals to obtain effective signals;
amplifying and shaping the effective signal, and converting the effective signal into a rectangular wave signal;
demodulating the rectangular wave signal according to the signal type of the modulated light signal, and analyzing to obtain UID information of the lamp;
acquiring positioning information of a lamp;
binding the positioning information and the UID information to obtain a lamp information package;
and transmitting the lamp information packet to a cloud server.
CN202011038169.8A 2020-09-28 2020-09-28 Illumination control terminal information acquisition device, system and method based on optical communication Active CN112351546B (en)

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