WO2022083136A1

WO2022083136A1 - Internet of things centralized control system for raising and lowering type floodlight tower for railway

Info

Publication number: WO2022083136A1
Application number: PCT/CN2021/099239
Authority: WO
Inventors: 孙宏义; 王长龙; 赵刚; 齐孟星; 徐士彬; 邱晓杰; 程爽; 孟祥久; 冀晓莹; 王大伟
Original assignee: 中铁九局集团电务工程有限公司
Priority date: 2021-06-09
Filing date: 2021-06-09
Publication date: 2022-04-28
Also published as: JP7242113B2; JP2022550213A; CN114788413A

Abstract

An Internet of Things centralized control system for a raising and lowering type floodlight tower, comprising: an ambient illumination sensor, used to monitor the ambient illumination of the floodlight tower in real time; a wheel sensor, used to monitor the height of lamps of the floodlight tower in real time; a central processing unit, configured to, in response to the ambient illumination being less than a current ambient illumination threshold, determine a number of lamps to turn on in the floodlight tower on the basis of the ambient illumination and the height of the lamps. The ambient illumination sensor and the wheel sensor are both mounted on the floodlight tower. Centralized network control of floodlight tower lamps is implemented, and intelligent control of the number of lamps to turn on in the floodlight tower is implemented, thus achieving the goals of energy conservation and environmental protection.

Description

IoT centralized control system for railway lift-type flood light tower

technical field

The present application belongs to the technical field of general control or adjustment systems, and in particular relates to a centralized control system of the Internet of Things for a railway lift-type flood light tower.

Background technique

The current operation mode of the railway lift-type flood light tower is time-controlled and light-controlled or manually turned on according to the workload. The work efficiency is low. When the light is required, it is not turned on or it is turned on for a long time when there is no work. The waste of electricity is extremely serious, and the station yard The span is large, the mileage is long, the daily maintenance and inspection workload is large, and the maintenance cost increases, which often leads to blind pipes or even out of pipes. The complex and ordinary intelligent product network of the lines in the railway station area is difficult to cover, and centralized management and control cannot be achieved.

Therefore, it is necessary to provide an improved technical solution for the deficiencies of the above-mentioned prior art.

SUMMARY OF THE INVENTION

The purpose of the present application is to provide an IoT centralized control system for a railway lift-type flood light tower, so as to solve or alleviate the above-mentioned problems in the prior art.

In order to achieve the above purpose, the application provides the following technical solutions:

The present application provides an IoT centralized control system for a railway lift-type flood light tower, comprising: an environmental illuminance sensor for real-time monitoring of the ambient illuminance of the flood light tower; a wheel-type sensor for The height of the lamps of the flood light tower is monitored in real time; the central processing unit is configured to, in response to the ambient illuminance being less than a preset ambient illuminance threshold, determine that the lamps of the flood light tower are turned on according to the ambient illuminance and the height of the lamps Quantity; wherein, the ambient illuminance sensor and the wheel-shaped sensor are both installed on the flood light tower.

Beneficial effects:

The Internet of Things centralized control system for a railway lift-type flood light tower provided by the embodiment of the present application monitors the ambient illuminance of the flood light tower in real time through an environmental illuminance sensor installed on the flood light tower, and the central processing unit monitors the environment. The ambient illuminance collected by the illuminance sensor is compared with the preset ambient illuminance threshold. When the ambient illuminance collected by the ambient illuminance sensor is less than the preset ambient illuminance threshold, the central processor controls the lighting of the flood light tower to turn on; The wheel-type sensor monitors the height of the lamps of the floodlight tower in real time, and the central processor determines the number of lamps in the floodlight tower according to the height of the lamps collected by the wheel-type sensor and the ambient illuminance collected by the ambient illuminance sensor. In this way, the centralized network control of the lamps and lanterns of the flood light tower is realized, and the intelligent control of the number of lamps of the flood light tower is realized, so as to achieve the purpose of energy saving and environmental protection.

Description of drawings

1 is a schematic diagram of an IoT centralized control system for a railway lift-type flood light tower provided according to some embodiments of the present application;

FIG. 2 is a schematic diagram of the principle of sequentially lighting wicks in an IoT centralized control system for a railway lift-type flood light tower provided according to some embodiments of the present application.

Detailed ways

As shown in Figure 1, the IoT centralized control system for the railway lift-type flood light tower includes: an environmental illuminance sensor, a wheel sensor and a central processing unit. The environmental illuminance sensor is used to monitor the ambient illuminance of the flood light tower in real time. , the wheel sensor is used to monitor the height of the lamps of the flood light tower in real time, and the central processing unit is configured to determine the number of lamps turned on in the flood light tower according to the ambient illuminance and the height of the lamps in response to the ambient illuminance being less than the preset ambient illuminance threshold; , Environmental illuminance sensor, wheel sensor are installed on the light tower.

The ambient illuminance sensor is installed on the top of the flood light tower, collects the ambient illuminance around the flood light tower in real time, and the central processing unit judges the ambient illuminance around the flood light tower in real time. When the ambient illuminance is insufficient, it can be turned on in time. Flood light tower lamps, supplementary lighting. In this way, the lamps of the flood light tower are effectively prevented from being constantly on, and the time-sharing and intelligent control of the lamps of the flood light tower is realized, so that the lamps of the flood light tower can be turned on or off according to the ambient illuminance, so as to achieve the purpose of energy saving and environmental protection.

The wheel sensor is installed on the lifting steel wire of the output shaft of the lamp base lifting motor of the flood light tower to monitor the current height of the lamp, and the central processing unit judges whether the projection range of the lamp can cover the target position according to the current height of the lamp. so that the height of the luminaire can be adjusted. At the same time, the central processor determines the number of lamps to be turned on in the flood light tower according to the height of the lamps collected by the wheel sensor and the ambient illuminance collected by the ambient illuminance sensor, so as to realize the centralized network control of the lamps and lanterns of the flood light tower, and to turn on the lamps of the flood light tower. The number of intelligent control, to achieve the purpose of energy saving and environmental protection.

In some optional embodiments, the central processor is further configured to, in response to the ambient illuminance being less than the preset ambient illuminance threshold, obtain the illuminance of the flood light tower according to the luminaire height and preset luminaire parameters based on the preset luminaire illuminance model. Based on the preset lamp brightness model, according to the lamp illuminance and ambient illuminance, the lamp brightness of the floodlight tower is obtained; according to the lamp brightness and the total lamp power of the floodlight tower, the number of lamps turned on in the floodlight tower is determined;

Among them, the preset lamp parameters include: the highest value of the lamp, the lowest value of the lamp, the maximum illuminance of the lamp, and the illuminance at the lowest value of the lamp; the highest value of the lamp and the lowest value of the lamp respectively represent the maximum height and the minimum height of the lamp on the flood light tower, and also That is, the upper limit position and the lower limit position of the lamp when it moves on the tower column of the flood light tower.

The preset luminaire illuminance model is shown in the following formula (1):

Among them, E is the illuminance of the lamp; H is the height of the lamp; H _min is the minimum value of the lamp; H _max is the maximum value of the lamp; E _max is the maximum illuminance of the lamp;

It is the illuminance at the lowest height of the lamp.

Based on the preset lamp brightness model, the central processing unit obtains the lamp brightness of the flood light tower according to the lamp illuminance and the ambient illuminance; wherein, the preset lamp brightness model is shown in the following formula (2):

Among them, Lm is the brightness of the lamp; E ^hj is the ambient illuminance;

is the preset ambient illuminance threshold;

is the minimum starting value of the illuminance of the lamp;

It is the minimum value of ambient illuminance.

The minimum starting value of the illuminance of the lamp

It is the preset parameter of the luminaire, the minimum value of the ambient illuminance

It is the ambient illuminance collected by the ambient illuminance sensor at a preset time point, and the preset time point is set according to different seasons and weather changes. For example, the preset time is set as the time when it is "dark", and statistics can also be made according to the data of the preset time ("dark") collected by the environmental illumination sensor within a period of time, and the minimum value of the ambient illumination can be calculated.

Take as a fixed value. Typically, the ambient illuminance minimum value

Infinite approaches zero.

In some optional embodiments, the central processing unit further determines the number of lamps that are turned on in the flood light tower according to the brightness of the lamps and the total power of the lamps of the flood light tower. Specifically, in response to the brightness of the lamps being less than 60% of the total power of the lamps, it is determined to turn on half of the lamps of the flood light tower; in response to the brightness of the lamps being greater than 60% of the total power of the lamps, it is determined to turn on the whole number of lamps of the flood light tower. In this way, the intelligent control of the number of turned-on lamps is realized, waste or insufficient turn-on of lamps is effectively avoided, and the target location is guaranteed to have enough lamps to illuminate.

In some optional embodiments, the lamp of the flood light tower includes a plurality of wicks, and each wick corresponds to a time relay with a different delay time, wherein the time relay is used to control the plurality of wicks to light up in sequence. Specifically, the time delay of each time relay is set to 10 seconds, that is, the turn-on time interval between two adjacent lamp wicks is 10 seconds. In this way, it can not only ensure the safe use of lamps, but also can control the delayed start of the lamp wick and intelligently analyze the current of the lamp to judge whether the lamp wick is faulty, which effectively improves the observation, monitoring and fault identification of each lamp wick. Specifically, the IoT centralized control system for the railway lift-type flood light tower also includes: a current monitoring unit and a fault discrimination unit, wherein the current monitoring unit is configured to monitor the working current of the lamp wick; the fault discrimination unit is configured to Current and preset power of the wick to determine whether the wick is faulty. If the input current of the wick does not match the preset power of the wick, the current wick is faulty. For example, if the current monitoring unit detects that there is no change in the working current of the wick, it means that the wick is broken, and if the working current of the wick is too large, it means that the wick is short-circuited.

In an application scenario, in response to the lighting of the N+1th wick, where N is an integer; the current monitoring unit is further configured to monitor the working current of the lit N+1 wick; the fault determination unit is further configured In order to judge whether the N+1th lamp wick is faulty according to the working current of the N+1th lamp wick, the working current of the first N lamp wicks and the preset power of the N+1th lamp wick.

After the central processing unit issues a command to start the lamp, the lamp is powered, and the plurality of wicks in the lamp are respectively lit in sequence according to the time relays with different delay times. After the current monitoring unit detects that the first wick is lit, the central processing unit determines whether its operating current matches the preset wick power. When the N+1 wick is lit, the central processing unit obtains the working current of the N+1 wick by subtraction according to the working current of the lit N+1 wicks and the working current of the first N wicks , and judge whether it matches the preset wick power of the N+1th wick, so as to judge whether the N+1th wick is faulty.

As shown in Figure 2, when the central processor detects that the ambient illuminance is lower than the preset ambient illuminance threshold, it issues a command to start the lamps, ZK1 is pulled in, the first group of lamps is powered on, and each wick of the first group of lamps is installed with different delays. Time relay to light the wicks in sequence, the central processing unit first monitors whether the working current of the first wick matches the set wick power, if the total current does not change, the wick is broken and damaged, and if the current is too large, the wick is short-circuited. If there is a fault, when the second wick is turned on, the monitoring current value minus the current value stored after the first wick is stable can determine whether the second wick is faulty, and so on to analyze the working conditions of each wick. . As a result, it is not necessary to install complex detection equipment for each wick, and each wick does not need to be wired separately, the lighthouse wiring is simple, costs are saved, and maintenance and repair are simple.

The wheel sensor monitors the current height of the lamp, and the central processing unit determines whether the projection range of the lamp can cover the target position according to the current height of the lamp. Specifically, the central processing unit is further configured to calculate the light projection range of the light fixture according to the height of the light fixture and the illumination angle of the light fixture, and in response to the light projection range not covering the target location, control the light fixture to move on the light projection tower until the light projection range of the light fixture Cover the target location.

The lamp is installed on the flood light tower and illuminates downward. When the highest point of the flood light tower lamp is the farthest projection range of the flood light tower, the rated power of the lamp can meet the design requirements. will be shortened, and the illumination will continue to increase. When the target location is not within the lighting range of the lamp, move the lamp upward to make the diameter of the lighting projection range on the ground larger until the shroud covers the target location. With the change of the target location, the height of the lamps can be adaptively adjusted to control the projection range of the lamps and the number of lamps turned on, so as to achieve the matching of energy saving and consumption reduction with the illumination brightness of the target location.

The central processing unit is responsible for the execution control of the lighting of the floodlight tower, the brightness of the lamps, and the projection range. According to the ambient illuminance of the ambient illuminance sensor, after judging that the ambient light is lower than the preset value, start the lamp, and start to calculate the lighting range of the lamp. It is calculated from the base point, the wheel sensor moves 0.1 meters for each rotation of the steel wire, the wheel sensor sends out 10 pulses, and the central processing unit calculates 0.01 meters for each pulse for accumulation, and measures the height of the lamp, the motor Reverse counts down. After the height of the lamp is obtained, according to the projection angle of the lamp, the product of the height of the lamp and the tangent of the projection angle is the projection range.

In a specific example, the IoT centralized control system for the railway lift-type flood light tower also includes: an inspection switch, which is in a normally open state, wherein the inspection switch, the central processing unit and the lamps are connected to the flood light tower. The movement constitutes an open loop control, and in response to the service switch closing, the central processor disconnects control of the movement of the light fixture on the floodlight tower.

The maintenance switch is in the normally open state, and the central processing unit controls the movement of the lamps on the floodlight tower to change the height of the lamps. When the flood light tower needs to be repaired, close the inspection switch. At this time, the central processor can no longer control the movement of the lamps on the flood light tower, but the maintenance personnel manually control the lamps to move on the flood light tower. In order to repair the flood light tower. It should be noted that on the floodlight tower, there are limit switches at the highest value of the lamp and the lowest value of the lamp respectively, so as to control the movement of the lamp during the maintenance of the floodlight tower.

The lamps are installed on the tray that can move up and down along the tower column of the flood light tower. When the lamp needs to be replaced, the control tray moves down to the ground for maintenance. Under normal lighting conditions, the luminaire can move with the tray within the range of travel to meet the needs of different projection ranges. Here, the up and down movement of the pallet is controlled by installing a motorized mechanism at the bottom of the elevating flood light tower.

When the inspection switch is on, the central processing unit controls the tray to move on the tower column of the light tower. At this time, the tray moves on the upper 2/3 of the light tower to change the light projection range.

In some optional embodiments, the IoT centralized control system for a railway lift-type flood light tower further includes: a remote client, connected in communication with the central processing unit, and configured to perform an operation on the flood light tower according to the unique identifier of the flood light tower. remote control.

The central processing unit sends and receives data collected by various sensors, monitoring units, etc. through the IoT communication module (for example, 5G communication module). Among them, the Internet of Things communication module is responsible for communication processing and protocol conversion, converting the ModBus protocol data of the central processing unit to the Internet cloud, and then receiving it by the remote client. The remote client can be a mobile client, a computer client, and the like.

Each light tower is connected to the internet by a 5G IoT communication module, and is connected to the PC client or mobile client through the internet cloud platform. The mobile terminal accesses the cloud configuration interface through the App or domain name, and clicks the corresponding light tower logo on the interface. (Each lighthouse has a unique identification number), that is, you can connect to the floodlights and view the real-time data of the floodlights. It should be noted that the real-time data of the floodlight tower is stored in each lighthouse terminal, which facilitates the client to access at any time to view the real-time status of the floodlight tower, that is, historical data (for example, alarm data).

Each light tower has a unique identification (such as number and password), and the central processor that communicates with the IoT communication module sets the station address. Various sensors are connected to the central processing unit, and are not directly connected to the IoT communication module. In this way, the data accuracy of the remote client-side control of the floodlight towers can be effectively ensured. At the same time, the specific location of each floodlight tower needs to be configured on the cloud platform. The configuration of the floodlight towers on the cloud platform is based on a map. The mode is added, and the remote client's access to the lighthouse can also use the map mode. Specifically, a station map is drawn (for example, a map picture is imported), and a picture of the flood lighthouse is inserted in the actual position of the map and marked with text, and the flood lighthouse is numbered. By setting the setting point on the picture of the flood light tower, click the hot spot to enter the control operation status interface of the flood light tower. In the control operation status interface, all settings are connected through the identification number of the Internet of Things communication module to confirm the connection with the Internet of Things. After the address of the central processing unit connected by the communication module is correct, the data exchange between the remote client and the controlled light tower is completed.

The Internet of Things centralized control system for railway lift-type flood light towers is also equipped with a video monitoring unit, through which video graphics are collected for the flood light tower to realize image monitoring of the flood light tower and effectively improve the quality of the flood light tower. Fault emergency handling capability. Among them, the video monitoring unit can be sent to the cloud by the network cloud camera through the Internet of Things communication module. Each floodlight tower can be set up with one or more cloud cameras as required to observe the surrounding conditions of the floodlight tower. Get the cloud camera data to check the status of each light tower attachment.

The graphical interface of the remote client can use dynamic interface (for example, the interface that changes with the weather), dynamic light status display, set the manual start button of lamps, timing start button, insufficient light start button, light tower lift control start button, and lamp failure alarm indication Lights, call light on status reports, fault maintenance records, etc., real-time display of voltage, current, power, energy consumption, etc. The monitoring data of the working current of the wick can also be transmitted to the remote client, so as to notify the maintenance personnel for fault monitoring; or, the public account push, SMS alarm, etc.

The remote client man-machine interface is completed by cloud configuration. The screen changes dynamically with the on-site feedback data, displays real-time on-site data, and realizes the intelligent management and control of multiple light towers in multiple places.

By setting the storage unit to store daily data and memory data such as the light on state time, record the lighting angle, lamp power, lamp illuminance and other information set by the remote client, and store multiple lighting strategies of the remote client's serial number. Among them, the lighting strategy includes the lighting startup time range, the preset ambient illuminance, and the lighting projection range. The startup time, preset ambient illumination, and lighting projection range of each lighting strategy are different. The client clicks the strategy button to select a certain lighting strategy that satisfies the work, and the central processing unit will retrieve the strategy information stored in the storage unit to execute the lighting on and off. When the lighting strategy is executed, the height of the lamps stored in the lighting strategy is compared with the height of the monitored lamps. If the height is higher than the height set in the strategy, the central processing unit controls the lamps to descend, and if the height is lower than the height set in the strategy, the central processing unit controls the lamps to rise. . Among them, in the lighting strategy, the action range of the lamp and the height setting value cannot exceed the preset range, and the overtravel automatic stop function is set. In this way, the centralized control system of the Internet of Things can not only save energy and protect the environment, but also realize intelligent analysis of lighting strategies, intelligent analysis of fault points, and greatly reduce maintenance workload.

The ambient illuminance sensor is installed on the top of the flood light tower, and the wheel sensor is installed on the lifting steel wire of the output shaft of the lamp base of the flood light tower.

Environmental illuminance sensor, wheel sensor, current sensor (current monitoring unit), environmental sensor, etc. uniformly adopt the analog signal transmission standard adopted by the International Electrotechnical Commission (IEC) process control system, 4-20mA current signal transmission, effectively improve the anti-interference ability, Wide versatility, long transmission distance, and explosion-proof effect. The current signal of each sensor is converted, analyzed and compared by the central processing unit and uploaded to the man-machine interface of the remote client.

Among them, the ambient illuminance sensor uses 4-20mA input, and the value obtained after conversion by the A/D converter is 6400-32000, which is calculated by the central processing unit, and the illuminance range is 0-200,000 Lux; the voltage sensor uses 4-20mA input, The value converted by the A/D converter is 6400-32000, which is calculated by the central processing unit, and the voltage range is 0-300V. The calculation method is: voltage=(measured value after the A/D converter-6400)*300/25600 ; The current sensor uses 4-20mA input, the value obtained after conversion by the A/D converter is 6400-32000, which is calculated by the central processing unit, the current range is 0-50A, and the calculation method is: current A = (A/D converter After the measurement value -6400)*50/25600; the ambient temperature sensor adopts 4-20mA input, the value obtained after conversion by the A/D converter is 6400-32000, calculated by the central processing unit, the temperature range is -40-50 ℃ , the calculation method is: temperature (°C) = (measured value after A/D converter -6400)*90/25600-40.

Claims

An Internet of Things centralized control system for a railway lift-type flood light tower, characterized in that it includes:

an ambient illuminance sensor, used for real-time monitoring of the ambient illuminance of the floodlight tower;

A wheel-type sensor for real-time monitoring of the height of the lamps of the floodlight tower;

a central processing unit, configured to, in response to the ambient illuminance being less than a preset ambient illuminance threshold, determine the number of lamps turned on in the flood light tower according to the ambient illuminance and the height of the lamps;

Wherein, the ambient illuminance sensor and the wheel-shaped sensor are both installed on the flood light tower.
The Internet of Things centralized control system for a railway lift-type flood light tower according to claim 1, wherein the central processing unit is further configured to:

In response to the ambient illuminance being less than a preset ambient illuminance threshold, based on a preset luminaire illuminance model, according to the luminaire height and preset luminaire parameters, the luminaire illuminance of the flood light tower is obtained;

Based on the preset lamp brightness model, the lamp brightness of the flood light tower is obtained according to the lamp illuminance and the ambient illuminance;

According to the brightness of the lamps and the total power of the lamps of the flood light tower, determine the number of lamps turned on in the flood light tower;

The preset lamp parameters include: the highest value of the lamp, the lowest value of the lamp, the maximum illuminance of the lamp, and the illuminance at the lowest value of the lamp; the highest value of the lamp and the lowest value of the lamp respectively represent the lamp in the projection light Maximum height and minimum height on the lighthouse;

The preset lamp illuminance model is:

Wherein, E is the illuminance of the lamp; H is the height of the lamp; Hmin is the minimum value of the lamp; Hmax is the maximum value of the lamp; Emax is the maximum illuminance of the lamp;
is the illuminance at the lowest height of the lamp;

The preset lamp brightness model is:

Among them, Lm is the brightness of the lamp; E hj is the ambient illuminance;
is the preset ambient illuminance threshold;
is the minimum starting value of the illuminance of the lamp;
It is the minimum value of ambient illuminance.
The Internet of Things centralized control system for a railway lift-type flood light tower according to claim 2, wherein the central processing unit is further configured to:

In response to the brightness of the light fixture being less than or equal to sixty percent of the total power of the light fixture, determining to turn on half of the light fixtures of the flood light tower;

In response to the light fixture brightness being greater than sixty percent of the total power of the light fixture, it is determined to turn on the full number of light fixtures of the floodlight tower.
The Internet of Things centralized control system for a railway lift-type flood light tower according to claim 1, wherein the lamps of the flood light tower include a plurality of wicks, and each of the wicks is correspondingly set with a different delay time. A time relay, wherein the time relay is used to control a plurality of the wicks to light up in sequence.
The Internet of Things centralized control system for railway elevating flood light towers according to claim 4, wherein the Internet of Things centralized control system for railway elevating flood light towers further comprises:

a current monitoring unit, configured to monitor the working current of the lamp wick;

The fault determination unit is configured to determine whether the lamp wick is faulty according to the working current and the preset power of the lamp wick.
The Internet of Things centralized control system for a railway lift-type flood light tower according to claim 5, characterized in that, in response to the N+1th wick lighting up, wherein N is an integer;

The current monitoring unit is further configured to monitor the operating currents of the N+1 wicks that are lit;

The fault judging unit is further configured to determine the N+1th wick according to the operating current of the N+1 wicks, the operating current of the first N wicks, and the preset power of the N+1th wick Whether one of the wicks is faulty.
The Internet of Things centralized control system for railway lift-type flood light towers according to claim 1, characterized in that:

The central processing unit is further configured to, according to the height of the light fixture and the illumination angle of the light fixture, obtain the light projection range of the light fixture; in response to the light projection range not covering the target location, control the light fixture to be in the Move on the projection light tower until the projection range of the lamp covers the target location.
The Internet of Things centralized control system for railway lift-type flood light towers according to claim 7, characterized in that, the Internet of Things centralized control system for railway lift-type flood light towers further comprises:

An inspection switch, the inspection switch is in a normally open state, wherein the inspection switch, the central processing unit and the movement of the lamps on the flood light tower form an open-loop control; in response to the inspection switch being closed, The central processor deactivates control of the movement of the light fixture on the floodlight tower.
The Internet of Things centralized control system for railway lift-type flood light towers according to claim 1, wherein the Internet of Things centralized control system for railway lift-type flood light towers further comprises: a remote client, and The communication connection of the central processing unit is used to remotely control the flood light tower according to the unique identifier of the flood light tower.
The Internet of Things centralized control system for a railway lift-type flood light tower according to any one of claims 1-9, characterized in that:

The ambient illuminance sensor is installed on the top of the flood light tower,

The wheel sensor is installed on the lifting steel wire of the output shaft of the lamp base lifting motor of the flood light tower;

The light fixture of the flood light tower is mounted on a tray that can move along the tower column of the light tower.