IoT centralized control system for railway lifting light tower

Abstract

An Internet of Things centralized control system for a railway lifting floodlight tower includes: an ambient illumination sensor for real-time monitoring of the ambient light illumination of the floodlight tower; a wheel-shaped sensor for real-time monitoring of the height of the lamps of the floodlight tower; a central processor configured to respond to the ambient light illumination being less than a preset ambient illumination threshold, and determine the number of lamps of the floodlight tower to be turned on according to the ambient light illumination and the height of the lamps; the ambient illumination sensor and the wheel-shaped sensor are both installed on the floodlight tower. The centralized networking control of the floodlight tower lamps is realized, and the intelligent control of the number of lamps of the floodlight tower to be turned on is realized, so as to achieve the purpose of energy saving and environmental protection.

Description

Technical Field

[0001] The present application belongs to the general field of control or regulation system technology, and in particular, relates to an Internet of Things centralized control system for a railway lifting light tower. Background Art

[0002] The current operation mode of railway lifting light tower is time control and light control, or it is manually turned on according to the workload, which has low work efficiency. The light is not turned on when needed or it is turned on for a long time when there is no work, which wastes a lot of electricity. In addition, the station yard has a large span and long mileage, and the daily maintenance and inspection workload is large, which increases the maintenance cost, often resulting in blind pipes or even disconnection. The lines in the railway station area are complex and it is difficult for ordinary intelligent product networks to cover them, and centralized control cannot be achieved.

[0003] Therefore, it is necessary to provide an improved technical solution to address the above-mentioned deficiencies in the prior art. Summary of the invention

[0004] The purpose of this application is to provide an Internet of Things centralized control system for railway lifting light towers to solve or alleviate the problems existing in the above-mentioned prior art.

[0005] In order to achieve the above objectives, this application provides the following technical solutions:

[0006] The present application provides an Internet of Things centralized control system for a railway lifting floodlight tower, comprising: an ambient illumination sensor for real-time monitoring of the ambient light illumination of the floodlight tower; a wheel-shaped sensor for real-time monitoring of the height of the lamps of the floodlight tower; a central processing unit configured to determine the number of lamps of the floodlight tower to be turned on according to the ambient light illumination and the height of the lamps in response to the ambient light illumination being less than a preset ambient illumination threshold; wherein the ambient illumination sensor and the wheel-shaped sensor are both installed on the floodlight tower.

[0007] Beneficial effects:

[0008] The Internet of Things centralized control system for railway lifting floodlight towers provided in the embodiment of the present application monitors the ambient light illumination of the floodlight towers in real time through the ambient illumination sensor installed on the floodlight towers, and the central processing unit compares the ambient light illumination collected by the ambient illumination sensor with the preset ambient illumination threshold. When the ambient light illumination collected by the ambient illumination sensor is less than the preset ambient illumination threshold, the central processing unit controls the lamps of the floodlight towers to turn on; the wheel-shaped sensor installed on the floodlight towers monitors the lamp height of the floodlight towers in real time, and the central processing unit determines the number of lamps of the floodlight towers to turn on based on the lamp height collected by the wheel-shaped sensor and the ambient light illumination collected by the ambient illumination sensor. In this way, centralized network control of floodlight tower lamps is realized, and intelligent control of the number of lamps of the floodlight towers to turn on is realized, so as to achieve the purpose of energy saving and environmental protection. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] Figure 1 A schematic diagram of an Internet of Things centralized control system for a railway lifting light tower provided according to some embodiments of the present application;

[0010] Figure 2 This is a schematic diagram of the principle of sequentially lighting up the wicks in an Internet of Things centralized control system for a railway lifting light tower provided according to some embodiments of the present application. DETAILED DESCRIPTION

[0011] like Figure 1 As shown, the Internet of Things centralized control system for railway lifting floodlight towers includes: an ambient illumination sensor, a wheel-shaped sensor and a central processing unit. The ambient illumination sensor is used to monitor the ambient light illumination of the floodlight tower in real time, and the wheel-shaped sensor is used to monitor the height of the lamps of the floodlight tower in real time. The central processing unit is configured to respond to the ambient light illumination being less than a preset ambient illumination threshold, and determine the number of lamps of the floodlight tower to be turned on according to the ambient light illumination and the lamp height; wherein the ambient illumination sensor and the wheel-shaped sensor are both installed on the floodlight tower.

[0012] The ambient illumination sensor is installed on the top of the floodlight tower to collect the ambient illumination around the floodlight tower in real time, and the central processor makes a real-time judgment on the ambient illumination around the floodlight tower. When the ambient illumination is insufficient, the lamps of the floodlight tower can be turned on in time to supplement the illumination. In this way, the lamps of the floodlight tower are effectively prevented from being always on, and the lamps of the floodlight tower are controlled in a time-sharing and intelligent manner, so that the lamps of the floodlight tower can be turned on or off according to the ambient illumination, achieving the purpose of energy saving and environmental protection.

[0013] The wheel sensor is installed on the lifting steel wire of the output shaft of the lifting motor of the lamp holder of the floodlight tower to monitor the current height of the lamp. The central processor determines 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 lamp can be adjusted. At the same time, the central processor determines the number of lamps to be turned on in the floodlight tower based on the lamp height collected by the wheel sensor and the ambient light illumination collected by the ambient illumination sensor, realizes the centralized networking control of the floodlight tower lamps, and the intelligent control of the number of lamps turned on in the floodlight tower, so as to achieve the purpose of energy saving and environmental protection.

[0014] In some optional embodiments, the central processor is further configured to, in response to the ambient light illumination being less than a preset ambient light threshold, obtain the illumination of the lamp of the floodlight tower based on a preset lamp illumination model, according to the lamp height and preset lamp parameters. Based on a preset lamp brightness model, obtain the lamp brightness of the floodlight tower according to the lamp illumination and the ambient light illumination; determine the number of lamps of the floodlight tower to be turned on according to the lamp brightness and the total lamp power of the floodlight tower;

[0015] Among them, the preset lamp parameters include: the highest value of the lamp, the lowest value of the lamp, the maximum illumination of the lamp, and the illumination of the lamp at the lowest value; the highest value of the lamp and the lowest value of the lamp respectively represent the maximum height and minimum height of the lamp on the floodlight tower, that is, the upper limit position and lower limit position of the lamp when it moves on the tower column of the floodlight tower.

[0016] The preset lamp illumination model is shown in the following formula (1):

[0017]

[0018] Where E is the illumination of the lamp; H is the height of the lamp; H min It is the minimum value of the lamp; H max is the maximum value of the lamp; E max is the maximum illumination of the lamp; It is the illumination when the lamp is at the lowest height.

[0019] The central processor obtains the lamp brightness of the floodlight tower based on the preset lamp brightness model, the lamp illumination and the ambient light illumination; wherein the preset lamp brightness model is shown in the following formula (2):

[0020]

[0021] Where, Lm is the brightness of the lamp; E hj is the ambient light intensity; is the preset ambient illumination threshold; It is the minimum starting value of the lamp illumination; It is the minimum value of ambient illumination.

[0022] Minimum lighting illumination value It is the preset parameter of the lamp, the minimum value of ambient illumination It is the ambient light illumination collected by the ambient illumination sensor at the preset time point. The preset time point is set according to different seasons and weather changes. For example, the preset time is set to the time when it is "dark". You can also collect statistics based on the data collected by the ambient illumination sensor at the preset time (when it is "dark") within a period of time, and take the lowest ambient illumination value as the value of the preset time. Take it as a fixed value. Usually, the minimum value of ambient illumination Infinitely approaches zero.

[0023] In some optional embodiments, the central processor also determines the number of lamps in the floodlight tower to be turned on based on the lamp brightness and the total lamp power of the floodlight tower. Specifically, in response to the lamp brightness being less than 60% of the total lamp power, half of the lamps in the floodlight tower are turned on; in response to the lamp brightness being greater than 60% of the total lamp power, all of the lamps in the floodlight tower are turned on. In this way, intelligent control of the number of turned-on lamps is achieved, effectively avoiding waste or insufficient lamp turning-on, and ensuring that the target location has sufficient lamp illumination.

[0024] In some optional embodiments, the lamp of the light tower includes multiple wicks, each wick corresponds to a time relay with a different delay time, wherein the time relay is used to control the multiple wicks to light up in sequence. Specifically, the time delay of each time relay is set to 10 seconds, that is, the opening time interval between two adjacent wicks is 10 seconds. In this way, not only can the safe use of the lamp be guaranteed, but also the delay start of the wick can be controlled, and the lamp current can be intelligently analyzed to determine whether the wick is faulty, effectively improving the effect of observation, monitoring and fault discrimination of each wick. Specifically, the Internet of Things centralized control system for the railway lifting 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 wick; the fault discrimination unit is configured to determine whether the wick is faulty according to the working current and the preset power of the wick. If the input current of the wick does not match the preset power of the wick, it means that the current wick is faulty. For example, if the current monitoring unit detects that the working current of the wick has not changed, it means that the wick is broken and damaged. If the working current of the wick is too large, it means that the wick is short-circuited.

[0025] In one 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 judgment unit is further configured to judge whether the N+1th wick is faulty based on the working current of the N+1 wick, the working current of the first N wicks and the preset power of the N+1th wick.

[0026] After the central processor issues a command to start the lamp, the lamp is powered, and the multiple wicks in the lamp are lit in turn according to the time relays set with different delay times. After the current monitoring unit detects that the first wick is lit, the central processor determines whether its working current matches the preset wick power. When the N+1th wick is lit, the central processor obtains the working current of the N+1th wick through subtraction operation based on the working current of the lit N+1 wick and the working current of the first N wicks, and determines whether it matches the preset wick power of the N+1th wick, thereby determining whether the N+1th wick is faulty.

[0027] like Figure 2 As shown, when the central processor detects that the ambient light illumination is less than the preset ambient illumination threshold, it issues a command to start the lamps, ZK1 is energized, and the first group of lamps is powered. Each wick of the first group of lamps is equipped with a time relay with a different delay time to light up the wicks in turn. The central processor first monitors whether the working current of the first wick after lighting matches the set wick power. If the total current does not change, it means that the wick is broken and damaged. If the current is too large, it means that the wick is short-circuited. When the second wick is lit, the current value is monitored minus the current value stored after the first wick stabilizes. It can be determined whether the second wick is faulty. By analogy, the working condition of each wick can be analyzed. In this way, there is no need to install complex detection equipment for each wick, and each wick does not need to be wired separately. The lighthouse wiring is simple, cost-saving, and maintenance is simple.

[0028] The wheel-shaped sensor monitors the current height of the lamp, and the central processor determines whether the projection range of the lamp can cover the target location according to the current height of the lamp. Specifically, the central processor is further configured to calculate the projection range of the lamp according to the height of the lamp and the illumination angle of the lamp, and in response to the projection range not covering the target location, control the lamp to move on the light tower until the projection range of the lamp covers the target location.

[0029] The lamp is installed on the floodlight tower and irradiates downward. When the floodlight tower lamp is at its highest point, that is, when the floodlight tower has the farthest range, the lamp emits rated power to meet the design requirements. When the lamp descends, the range of the lamp from the ground will be shortened, and the illumination will continue to increase. When the target location is not within the floodlight range of the lamp, move the lamp upward to increase the diameter of the floodlight range on the ground until it covers the target location. As the target location changes, the height of the lamp can be adaptively adjusted to control the floodlight range of the lamp and the number of lamps that are turned on, so as to achieve energy saving and consumption reduction and match the illumination brightness of the target location.

[0030] The central processing unit is responsible for the execution and control of the lighting, brightness and lighting range of the light tower. According to the ambient light illumination of the ambient illumination sensor, the lamp is started after the ambient light is judged to be lower than the preset value, and the lighting range of the lamp is calculated. The lighting range is calculated by the pulses emitted by the wheel sensor installed on the lifting steel wire of the output shaft of the lifting motor of the light tower lamp holder. The counting starts from the base point. The steel wire moves 0.1 meters for each rotation of the wheel sensor. The wheel sensor emits 10 pulses. The central processing unit calculates 0.01 meters for each pulse and accumulates it to measure the height of the lamp. The motor reverses and counts down. After obtaining the height of the lamp, according to the lighting angle of the lamp, the product of the height of the lamp and the tangent value of the lighting angle is the lighting range.

[0031] In a specific example, the Internet of Things centralized control system for a railway lifting floodlight tower also includes: a maintenance switch, which is in a normally open state, wherein the maintenance switch, the central processor and the movement of the lamp on the floodlight tower constitute an open-loop control, and in response to the closure of the maintenance switch, the central processor disconnects the control of the movement of the lamp on the floodlight tower.

[0032] The maintenance switch is normally open, and the central processor controls the movement of the lamp on the floodlight tower to change the height of the lamp. When the floodlight tower needs to be repaired, close the maintenance switch. At this time, the central processor will no longer be able to control the movement of the lamp on the floodlight tower, but the maintenance personnel will manually control the movement of the lamp on the floodlight tower to repair the floodlight tower. It should be noted that on the floodlight tower, the highest value and the lowest value of the lamp are respectively provided with travel switches to control the movement of the lamp during the maintenance of the floodlight tower.

[0033] The lamps are installed on a tray that can move up and down along the tower of the floodlight tower. When the lamps need to be replaced, the tray is controlled to move down to the ground for maintenance. Under normal lighting conditions, the lamps can move with the tray within the travel range to meet the needs of different floodlight ranges. Here, an electric mechanism is installed at the bottom of the lifting floodlight tower to control the up and down movement of the tray.

[0034] When the maintenance switch is in the on state, the central processor controls the tray to move on the tower column of the light tower. At this time, the tray moves on the upper 2 / 3 section of the light tower to change the light projection range.

[0035] In some optional embodiments, the Internet of Things centralized control system for railway lifting light towers also includes: a remote client, which is communicatively connected to the central processor and is used to remotely control the light tower according to the unique identifier of the light tower.

[0036] The CPU sends and receives data collected by various sensors and monitoring units through the IoT communication module (for example, 5G communication module). The IoT communication module is responsible for communication processing and protocol conversion, converting the CPU ModBus protocol data to the Internet cloud, and then receiving it by the remote client. The remote client can be a mobile client, a computer client, etc.

[0037] Each floodlight tower is connected to the internet through a 5G IoT communication module, and is connected to a PC client or mobile client through an internet cloud platform. The mobile client accesses the cloud configuration interface through an App or domain name, and clicks on the corresponding floodlight tower logo on the interface (each tower has a unique identification number) to connect to the floodlight tower and view the real-time data of the floodlight tower. It should be noted that the real-time data of the floodlight tower is stored in each tower terminal, so that the client can access it at any time to view the real-time status of the floodlight tower, that is, historical data (for example, alarm data).

[0038] Each floodlight tower has a unique identification (e.g., 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 processor and are not directly connected to the IoT communication module. In this way, the data accuracy of the remote client controlling the floodlight tower can be effectively guaranteed. At the same time, the specific location of each floodlight tower needs to be configured on the cloud platform, where the configuration of the floodlight tower on the cloud platform is added in map mode, and the remote client can also use map mode to access the floodlight tower. Specifically, draw a station map (e.g., import a map image), insert the floodlight tower image at the actual location in the map and add text annotations, and number the floodlight tower. By setting a point on the image of the floodlight tower and clicking on the hotspot, you can enter the control and operation status interface of the floodlight tower. In the control and operation status interface, all settings are connected through the IoT communication module identification number. After confirming that the address of the central processing unit connected to the IoT communication module is correct, the data exchange between the remote client and the controlled floodlight tower is completed.

[0039] The IoT centralized control system for railway lifting light towers is also equipped with a video monitoring unit, which collects video graphics of the light towers to achieve image monitoring of the light towers, effectively improving the emergency response capabilities for light tower failures. The video monitoring unit can be sent to the cloud by a network cloud camera through an IoT communication module. Each light tower can be equipped with one or more cloud cameras as needed to observe the surrounding conditions of the light towers. The remote client can view the status of each light tower attachment by retrieving the cloud camera data.

[0040] The graphical interface of the remote client can adopt a dynamic interface (for example, an interface that changes with the weather), dynamic light status display, set the manual start button of the lamp, the timer start button, the low light start button, the lighthouse lifting control start button, the lamp fault alarm indicator, call the light on status report, the fault maintenance record, etc., and display the voltage, current, power, energy consumption, etc. in real time. The monitoring data of the working current of the wick can also be transmitted to the remote client to notify the maintenance personnel to monitor the fault; or, the public account push and SMS alarm can be sent to the remote client.

[0041] The human-machine interface of the remote client is completed by cloud configuration. The screen changes dynamically with the on-site feedback data, displaying real-time on-site data and realizing intelligent control of multiple light towers in multiple locations.

[0042] By setting up a storage unit to store daily data such as the time when the light is turned on, record the light angle, lamp power, lamp illumination and other information set by the remote client, and store multiple lighting strategies of the remote client number. Among them, the lighting strategy includes the lamp start time range, the preset ambient illumination, and the light projection range. The start time, preset ambient illumination, and light projection range of each lighting strategy are different. The station staff clicks the strategy button on the remote client according to different workloads to select a lighting strategy that meets the work. The central processing unit will call the strategy information stored in the storage unit to execute the light on and off. When the lighting strategy is executed, the height of the lamp stored in the lighting strategy is compared with the height of the monitored lamp. If it is higher than the set height in the strategy, the central processing unit controls the lamp to descend, and if it is lower than the set height in the strategy, the central processing unit controls the lamp to rise. Among them, in the lighting strategy, the lamp action range and height setting value cannot exceed the preset range, and an over-travel automatic stop function is set. In this way, through this IoT centralized control system, not only can energy saving and environmental protection be achieved, but also intelligent analysis of lighting strategies and fault points can be achieved, greatly reducing the maintenance workload.

[0043] The ambient illumination sensor is installed on the top of the floodlight tower, and the wheel-type sensor is installed on the lifting steel wire of the output shaft of the lamp holder lifting motor of the floodlight tower; the lamp of the floodlight tower is installed on a tray that can be moved along the tower column of the lighthouse.

[0044] Ambient illumination sensors, wheel sensors, current sensors (current monitoring units), environmental sensors, 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 anti-interference ability, wide versatility, long transmission distance, and explosion-proof. The current signal of each sensor is converted, analyzed and compared by the central processing unit and uploaded to the human-machine interface of the remote client.

[0045] Among them, the ambient illumination sensor uses 4-20mA input, and the value obtained after conversion by the A / D converter is 6400-32000. Calculated by the central processing unit, the illumination range is 0-200,000 Lux; the voltage sensor uses 4-20mA input, and the value obtained after conversion by the A / D converter is 6400-32000. Calculated by the central processing unit, the voltage range is 0-300V, and the calculation method is: voltage = (measured value after A / D converter-6400) * 300 / 25600; the current sensor uses 4-20mA input, and the value obtained after conversion by the A / D converter is 6400-32000. Calculated by the central processing unit, the voltage range is 0-300V. The calculation method is: voltage = (measured value after A / D converter-6400) * 300 / 25600; The value obtained after conversion by the A / D converter is 6400-32000, calculated by the central processing unit, the current range is 0-50A, and the calculation method is: current A = (measured value after A / D converter-6400)*50 / 25600; the ambient temperature sensor uses 4-20mA input, and 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℃, and the calculation method is: temperature (℃) = (measured value after A / D converter-6400)*90 / 25600-40.

Claims

1. An Internet of Things centralized control system for a railway lifting light tower, characterized in that: include: An ambient illumination sensor, used for real-time monitoring of the ambient light illumination of the light tower; A wheel-shaped sensor for real-time monitoring of the height of the lamp of the light tower; A central processing unit, configured to determine the number of lamps of the floodlight tower to be turned on according to the ambient light illumination and the height of the lamps in response to the ambient light illumination being less than a preset ambient light illumination threshold; Wherein, the ambient illumination sensor and the wheel-shaped sensor are both installed on the light tower; The central processing unit is further configured to: In response to the ambient light illumination being less than a preset ambient illumination threshold, based on a preset lamp illumination model, the lamp illumination of the floodlight tower is obtained according to the lamp height and preset lamp parameters; Based on a preset lamp brightness model, the lamp brightness of the floodlight tower is obtained according to the lamp illumination and the ambient light illumination; Determine the number of lamps of the floodlight tower to be turned on according to the brightness of the lamps and the total power of the lamps of the floodlight tower; The preset lamp parameters include: the highest value of the lamp, the lowest value of the lamp, the maximum illumination of the lamp, and the illumination of the lamp at the lowest value; 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 floodlight tower; The preset lamp illumination model is: Wherein, E is the illumination of the lamp; H is the height of the lamp; H min is the minimum value of the lamp; H max is the highest value of the lamp; E max is the maximum illumination of the lamp; The illumination when the lamp is at the lowest height; The preset lamp brightness model is: Where, Lm is the brightness of the lamp; E hj is the ambient light intensity; is the preset ambient illumination threshold; It is the minimum starting value of the lamp illumination; It is the minimum value of ambient illumination.

2. The Internet of Things centralized control system for railway lifting light tower according to claim 1 is characterized in that: The central processing unit is further configured to: In response to the brightness of the lamp being less than or equal to 60 percent of the total power of the lamp, determining to turn on half of the lamps of the floodlight tower; In response to the brightness of the lamp being greater than sixty percent of the total power of the lamp, it is determined to turn on all the lamps of the floodlight tower.

3. The Internet of Things centralized control system for railway lifting light tower according to claim 1 is characterized in that: The lamp of the projection tower includes a plurality of wicks, each of which 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.

4. The Internet of Things centralized control system for railway lifting light tower according to claim 3 is characterized in that: The Internet of Things centralized control system for the railway lifting light tower also includes: a current monitoring unit configured to monitor the operating current of the wick; The fault determination unit is configured to determine whether the lamp core is faulty according to the working current and the preset power of the lamp core.

5. The Internet of Things centralized control system for railway lifting light tower according to claim 4 is characterized in that: In response to the N+1th wick being lit, where N is an integer; The current monitoring unit is further configured to monitor the working current of the N+1 lit wicks; The fault determination unit is further configured to determine whether the N+1th wick is faulty based on the working current of the N+1th wick, the working current of the first N wicks and the preset power of the N+1th wick.

6. The Internet of Things centralized control system for railway lifting light tower according to claim 1 is characterized in that: The central processor is further configured to obtain the lighting range of the lamp according to the height of the lamp and the illumination angle of the lamp; in response to the lighting range not covering the target location, control the lamp to move on the lighting tower until the lighting range of the lamp covers the target location.

7. The Internet of Things centralized control system for railway lifting light tower according to claim 6 is characterized in that: The Internet of Things centralized control system for the railway lifting light tower also includes: A maintenance switch, wherein the maintenance switch is in a normally open state, wherein the maintenance switch, the central processor and the movement of the lamp on the floodlight tower constitute an open-loop control; in response to the closure of the maintenance switch, the central processor disconnects the control of the movement of the lamp on the floodlight tower.

8. The Internet of Things centralized control system for railway lifting light tower according to claim 1 is characterized in that: The Internet of Things centralized control system for railway lifting light towers also includes: a remote client, which is communicatively connected to the central processor and is used to remotely control the light tower according to the unique identifier of the light tower.

9. The Internet of Things centralized control system for railway lifting light tower according to any one of claims 1 to 8, characterized in that: The ambient illumination sensor is installed on the top of the light tower; The wheel-shaped sensor is installed on the lifting steel wire of the output shaft of the lamp holder lifting motor of the floodlight tower; The lamp of the projection lighthouse is installed on a tray which can move along the tower of the lighthouse.

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