A real-time low-voltage power distribution device based on the Internet of Things and its control method

Abstract

The present application proposes a real-time low-voltage power distribution device based on the Internet of Things, which includes: a main controller for implementing the main control of the power distribution device; an Internet of Things module including a data perception layer, a data transmission layer, and a data management layer; wherein, a data interaction channel is provided between the main controller and the Internet of Things module. In this way, the main controller establishes a connection with the Internet of Things module, and the Internet of Things module realizes information interaction with the cloud total control through the main controller; wherein the power distribution device includes at least one main power supply, corresponding to a plurality of power distribution channels. In this way, each power distribution device can provide at least AC and DC power supply interfaces. The present application also relates to a control method for the real-time low-voltage power distribution device based on the Internet of Things. The real-time low-voltage power distribution device based on the Internet of Things and its control method of the present application have the advantages of being manageable and controllable, strong in real-time performance, high in security, and low in network bandwidth occupation.

Description

Technical Field

[0001] This application relates to the technical field of power supply for rail transit security cameras, and specifically relates to a real-time low-voltage power distribution device based on the Internet of Things and its control method. Background Art

[0002] In the existing low-voltage power distribution devices used in rail transit security camera monitoring systems, the structure mainly based on Ethernet gateways and serial port 458 buses is adopted, and the communication protocols used are Modbus and SNMP.

[0003] In terms of the communication bus, due to the relatively weak processing power of the main chip (MCU) in the above-mentioned low-voltage devices, it cannot simultaneously meet the requirements of independent output control of multiple voltages and efficient communication. Usually, the power distribution devices are cascaded through serial port 485 and then forwarded through an Ethernet gateway. This method has the following technical problems: 1) The monitoring system is distributed over a long distance, and distributed point settings need to be carried out in the rail transit security network, resulting in difficult wiring and high costs for wire consumption; 2) Due to distance factors, the serial port 485 bus often has to reduce the baud rate to ensure data correctness; 3) Since multiple independent power distribution devices are connected across the 485 bus, their status must be polled sequentially, which will cause a large delay in data response and very poor real-time performance.

[0004] In terms of communication protocols, the existing low-voltage power distribution devices adopt Modbus and SNMP protocols. Both of these protocols are of the Client / Server structure, that is, the low-voltage power distribution device is the Sever, and the human-machine interface or control center is the Client. 1) When the human-machine interface or control center needs to read the data of each low-voltage power distribution device, it must continuously repeat the instruction to send synchronous data to the low-voltage device, resulting in a serious delay in the command queue for data query, leading to many invalid data that have not been updated in the query return, and important system alarm data often cannot be read in time; 2) Secondly, for the Modbus or SNMP protocol, the message is in plain text, which is easy to be eavesdropped or tampered with, and is extremely insecure.

[0005] Therefore, there is a continuous need in this field to develop a real-time low-voltage power distribution device and its control method. Summary of the Invention

[0006] The purpose of this application is to provide a real-time low-voltage power distribution device based on the Internet of Things and its control method.

[0007] To solve the above technical problems, this application provides the following technical solutions.

[0008] In the first aspect, this application provides a real-time low-voltage power distribution device based on the Internet of Things, which includes:

[0009] The main controller is used to implement the main control of the power distribution equipment;

[0010] The Internet of Things module includes a data perception layer, a data transmission layer, and a data management layer;

[0011] A data interaction channel is provided between the main controller and the Internet of Things module, and the Internet of Things module realizes information interaction with the cloud total control through the main controller;

[0012] At least one main power supply corresponds to multiple power distribution channels, and each power distribution device can provide at least AC and DC power supply interfaces with different voltage ranges;

[0013] Multiple voltage conversion modules and multiple power supply control units are provided between the main power supply and the multiple power distribution channels. Each voltage conversion module, each power supply control unit, and each power distribution channel constitute an independent power supply unit for one channel.

[0014] In an implementation manner of the first aspect, the Internet of Things module includes data collection of at least three channels. The first channel is used to interact with the power supply control unit to realize data collection of each power supply channel, and the second channel is used to perform data collection on the terminals of the power supply ports.

[0015] In an implementation manner of the first aspect, the cloud total control of the monitoring system and the main controllers set in multiple power distribution devices perform distributed execution control.

[0016] In an implementation manner of the first aspect, the Internet of Things module automatically synchronizes the device status to the human-machine interface program through the COAP / MQTT / HTTPS protocol.

[0017] In an implementation manner of the first aspect, the operating system of the power distribution device is the FreeRTOS operating system.

[0018] In the second aspect, the present application also discloses a control method for a real-time weak current power distribution device based on the Internet of Things, which includes:

[0019] The main controller communicates with the power supply control unit of each channel to obtain the power output and channel occupancy information of each channel; when the power output and channel occupancy reach a certain ratio, the main controller communicates with the first channel in the Internet of Things module to open the corresponding data perception layer channel and start the data perception of the corresponding channel;

[0020] The Internet of Things module analyzes the data collected by the first channel, determines the power distribution situation of the power supply channel, and when the power distribution exceeds the set range, controls the data perception collection of the second channel and the third channel to obtain the overall operation situation of the power distribution device;

[0021] After the IoT module enables data collection for the second and third channels, the data management layer of the IoT module analyzes the relationship between the data collected on the second channel and the data on the first channel based on the data collected on the second channel.

[0022] In an implementation of the second aspect, after the IoT module obtains the above data, it uploads it to the cloud total control through the main control module, and through the data calculation of the cloud total control, an overall optimized plan for power supply stability is allocated.

[0023] In an implementation of the second aspect, for each power supply control unit, data analysis is performed on the historical output current and voltage parameters to determine whether there is a trend of a safety event occurring, and when it is determined that there is a trend of a safety event occurring, an alarm message is output.

[0024] In an implementation of the second aspect, the method further includes: detecting whether the local data of the power distribution equipment has changed; after detecting that the local data has changed, synchronizing the changed local data to the cloud through the IoT module.

[0025] In an implementation of the second aspect, the operating system of the power distribution equipment is the FreeRTOS operating system.

[0026] This application also discloses a non-transitory computer-readable storage medium storing computer instructions, characterized in that the computer instructions are used to cause the computer to execute the above method.

[0027] This application also discloses a computer program product, including a computer program, and the computer program realizes the above method when executed by a processor.

[0028] Compared with the prior art, the positive effects of this application are as follows:

[0029] (1) This application first proposes a real-time weak power distribution device that applies the IoT module to the power supply field of rail transit security cameras. By coordinating the control between the IoT module and the main control, the power supply voltage and current requirements of cameras under multiple independent channels are output, matching a suitable DC or AC power supply for the cameras, and using the data sensing channels of the IoT to perform real-time detection and analysis on the stability of the power supply for each channel. And using the data sensing system of the IoT to assist in coordinating the power supply channels, when the power supply load is heavy, it can finely sense and analyze the relationship between the environment and the power supply stability, and allocate data and protocol channel resources to ensure the safe and stable output of the power distribution device;

[0030] (2) The present application further optimizes the control method between the Internet of Things (IoT) module and the main controller, coordinates and allocates the weights of control permissions and resources between the IoT module and the main controller from the perspective of cloud total control, and dynamically allocates data transmission resources using various protocol types of the IoT to achieve refined control of power distribution equipment;

[0031] In summary, the real-time weak current power distribution equipment based on the IoT implemented according to the present application has the advantages of being manageable, controllable, strong in real-time performance, high in security, and low in network bandwidth occupancy. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 It is a schematic diagram of the module composition structure of a real-time weak current power distribution equipment based on the IoT implemented according to the present application.

[0033] Figure 2 It is a schematic diagram of the system composition structure of a real-time weak current power distribution equipment based on the IoT implemented according to the present application.

[0034] Figure 3 It is a schematic diagram of the module composition structure of another real-time weak current power distribution equipment based on the IoT implemented according to the present application.

[0035] Figure 4 It is a schematic diagram of the composition structure of the IoT module in the real-time weak current power distribution equipment based on the IoT implemented according to the present application.

[0036] Figure 5 It is a schematic diagram of the process structure of the control method of the real-time weak current power distribution equipment based on the IoT implemented according to the present application. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0037] Unless otherwise defined, the technical terms or scientific terms used in this specification and the claims shall have the ordinary meanings understood by those of ordinary skill in the technical field to which the present application belongs.

[0038] In the description of the present application, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "up", "down", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present application.

[0039] In addition, terms such as "first", "second", etc. are only used for descriptive purposes and should not be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, features defined with "first", "second", etc. may explicitly or implicitly include one or more such features. In the description of this application, unless otherwise specified, the meaning of "a plurality" is two or more.

[0040] In the description of this application, it should be noted that unless otherwise clearly specified and limited, the terms "installed", "connected", "coupled" should be understood in a broad sense. For example, it can be a connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood through specific circumstances.

[0041] As Figure 1-2 shown, this application discloses a real-time low-voltage power distribution device based on the Internet of Things, which includes a main controller and an Internet of Things module.

[0042] The main controller is used to implement the main control of the power distribution device; the cloud total control of the monitoring system and the main controllers set in multiple power distribution devices perform control in a distributed manner.

[0043] The Internet of Things module includes a data perception layer, a data transmission layer, and a data management layer. In this embodiment, a data interaction channel is provided between the main controller and the Internet of Things module. In this way, the main controller establishes a connection with the Internet of Things module, and the Internet of Things module realizes information interaction with the cloud total control through the main controller. In other embodiments of this application, the Internet of Things module and the cloud total control can directly realize information interaction. In this embodiment, each power distribution device includes an independent human-computer interaction program, and both the main controller and the Internet of Things module can interact with the user through the human-computer interaction program.

[0044] The power distribution device in this application includes at least one main power supply, corresponding to a plurality of power distribution channels. In this way, each power distribution device can provide at least an AC power supply interface and a DC power supply interface to supply power to the cameras in the monitoring system. A plurality of voltage conversion modules and a plurality of power supply control units are provided between the main power supply and the plurality of power distribution channels. Each voltage conversion module, each power supply control unit, and each power distribution channel constitute an independent power supply unit for one channel. The main controller and the power supply control unit perform interaction to achieve independent control of each power supply channel. Each power supply control unit is connected to the voltage conversion module, and the voltage and power conversion between the main power supply and the power supply interface is realized through the voltage conversion module.

[0045] As Figure 4As shown in the figure, the data perception layer in the Internet of Things module in this application includes data collection of at least three channels. The first channel is for data collection of each power supply channel, the second channel is for data collection of the working status of terminals such as cameras at the power supply port, and the third channel is for data collection of other data channels of the power distribution equipment, including but not limited to temperature, heat dissipation, humidity, etc. In one implementation, the data transmission layer in the Internet of Things module includes multiple data transmission channels, such as LoRa, NBIot, 4G / 5G modules, to be compatible with more data collection and transmission methods. The software actively synchronizes the latest device status to the human-machine interface program in a push (PUSH) manner through the COAP / MQTT / HTTPS protocol. The specific method is to detect in real time whether the local data of the power distribution equipment has changed. After detecting that the local data of the power distribution equipment has changed, it is regarded as detecting the latest status of the power distribution equipment. Then, through the Internet of Things module, the changed local data is synchronized to the human-machine interface in the cloud. Since the actively pushed data is only the latest data of the device, the data volume is small and the bandwidth occupied is lower.

[0046] In one implementation, the data management layer in the Internet of Things module is used to perform preliminary management on the data uploaded by the above channels, and allocate different data channel transmission protocols for the data collected in the above three channels, so as to improve the efficiency of data interaction between the Internet of Things module and the main controller.

[0047] In the specific implementation of this application, the main controller chip can adopt a 32-bit STM32 or PIC32 embedded microcontroller (MCU). The software operating system of the power distribution equipment in the monitoring system adopts the FreeRTOS real-time operating system. Each power supply channel can provide power outputs including DC5V, DC12V, DC24V, DC36 or AC24V according to the requirements of the connected devices (mainly cameras). Each power supply control unit circuit is independently controlled, and can monitor the output current and voltage parameters in real time, and according to the events of overvoltage, undervoltage, overcurrent, undercurrent and short circuit monitored in real time, give an alarm in time and provide protection to prevent damage to external devices and power distribution equipment.

[0048] In another embodiment of this application, for each power supply control unit, the output current and voltage parameters can be monitored in real time. At the same time, data analysis is performed on the historical output current and voltage parameters to judge whether there is a trend of safety events such as overvoltage, undervoltage, overcurrent, undercurrent and short circuit, and when it is determined that there is a trend of safety events, an alarm message is output in time. Among them, the data analysis of the historical output current and voltage parameters includes the analysis of the change speed, change amplitude, change curve, etc. of the current and voltage, but is not limited to this. In this way, safety events can be prevented in advance and the probability of safety events can be reduced.

[0049] AsFigure 3 As shown in Figure 3 , in the specific embodiments of the present application, as the power distribution equipment of the present application, multiple digital input (DI) ports are integrated, and each port is protected by an isolation circuit. The functions of the DI interface include: 1) used to connect an external lightning protection module / surge protection module. When a lightning strike occurs, the main controller chip will alarm in time according to the fast interrupt event of the DI port and provide protection; 2) when the power distribution equipment is installed in an electrical cabinet as a complete set, the DI port can be connected to the access control of the electrical cabinet. When the access control is opened, the power distribution equipment will sense it in time and report it to the main controller chip; 3) it can be connected to a smoke sensor or an infrared contact sensor to implement anti-theft protection and increase the security of the system; 4) it can be used to reserve access for other devices with DI requirements. In one embodiment, the number of digital input ports is preferably greater than or equal to 4.

[0050] As Figure 3 As shown in Figure 3 , in the specific embodiments of the present application, the power distribution equipment integrates multiple digital output (DO) modules. The functions of the DO interface include: 1) connecting an LED lamp. When an event that the electrical cabinet is opened is obtained in the input port, the system lights up the LED lamp through the DO port for lighting; 2) in occasions with specific requirements, connecting the electronic door lock of the electrical cabinet to achieve remote unlocking; 3) it can be used as a general relay for the digital switch of other electrical equipment. In one embodiment, the number of digital output ports is preferably greater than or equal to 4.

[0051] In the specific embodiments of the present application, the power distribution equipment further includes a temperature and humidity sensor and a fan cooling system. When the temperature and humidity of the environment change, the system can turn on or off the cooling fan according to the parameters preset by the user, and automatically adjust the speed of the fan according to the preset temperature and humidity level parameters. The information data collected by the temperature and humidity sensor is collected through the data sensing layer in the Internet of Things module and uploaded to the data management layer to monitor the overall working conditions of the power distribution equipment. For example, when the temperature and humidity values sensed by the temperature and humidity sensor are less than the lowest threshold preset by the user, the system can turn off the fan cooling system. When the temperature and humidity values sensed by the temperature and humidity sensor are greater than the highest threshold preset by the user, the system can turn on the fan cooling system. The user can preset multiple temperature and humidity levels and the corresponding fan speeds. The low level corresponds to the low speed, and the high level corresponds to the high speed, so that the system can automatically adjust the speed of the fan according to the preset temperature and humidity levels.

[0052] In the specific embodiments of the present application, the power distribution equipment has an isolated 485 serial communication interface for connecting an external reclosing module. When there is an abnormality in the power supply system connected to the main power supply, it can cut off the power supply or restart and recover automatically, so as to protect the power distribution equipment. The power distribution equipment in the present application further retains the RS485 communication port, and also retains the Modbus-RTU communication protocol in the software protocol to be compatible with the access of systems based on the traditional 485 bus communication method.

[0053] As shown in Figure 5 Figure 5 As another aspect of the present application, a real-time weak current power distribution equipment control method based on the Internet of Things is disclosed. The above control method mainly includes the following steps:

[0054] The main controller communicates with the power supply control unit of each channel to obtain the power output and channel occupancy information of each channel; when the power output and channel occupancy reach a certain ratio, the main controller communicates with the first channel in the Internet of Things module to open the corresponding data sensing layer channel and start the data sensing of the corresponding channel.

[0055] The Internet of Things module analyzes the data collected by the first channel, determines the power distribution of the power supply channel, and controls the data sensing collection of the second channel and the third channel when the power distribution exceeds the set range to obtain the overall operation status of the power distribution equipment.

[0056] The real-time weak current power distribution equipment control method based on the Internet of Things implemented according to the present application makes full use of the data collection and analysis functions of the main controller and the Internet of Things module to analyze the power supply status of the independent channels of the power distribution equipment. When the load of the power supply equipment is high, the corresponding channels of the data sensing layer of the Internet of Things module are started to perform data collection. When the load is not high, the main controller obtains the information of the corresponding channel load from the power supply control unit to reduce the redundancy of data collection in the power distribution equipment and improve the efficiency of data collection and transmission.

[0057] As a specific implementation manner of the control method of the present application, after the Internet of Things module starts the data collection of the second channel and the third channel, the data management layer of the Internet of Things module analyzes the relationship between the data of the second channel and the data of the first channel based on the data collected by the second channel, that is, obtains the relationship between the stability of the overall operation status of the power distribution equipment and the stability of the power supply channel. As a further preferred solution of the present application, after obtaining the above data, the Internet of Things module uploads it to the cloud total control through the main control module, and through the data calculation of the cloud total control, the overall optimization plan for power supply stability is allocated. In one specific example, for example, whether to complete the adjustment of the temperature channel of the power distribution equipment, or to control the power output of each power supply channel in the power distribution equipment, or even considering the camera distribution, when the load power of the current power distribution equipment is too high, allocate the camera power supply of other power distribution equipment to obtain monitoring data and further protect the power distribution equipment.

[0058] As a specific implementation of the control method of the present application, for each power supply control unit, the output current, voltage, and power parameters can be monitored in real time. At the same time, data analysis is performed on the historical output current, voltage, and power parameters to determine whether there is a trend of safety events such as overvoltage, undervoltage, overcurrent, undercurrent, and short circuit. When it is determined that there is a trend of safety events, an alarm message is output in a timely manner. Among them, data analysis of the historical output current, voltage, and power parameters includes, but is not limited to, the analysis of the change speed, change amplitude, change curve, etc. of the current, voltage, and power. In this way, safety events can be prevented in advance, and the probability of safety events can be reduced.

[0059] As a specific implementation of the control method of the present application, it is detected in real time whether the local data of the power distribution equipment has changed. After detecting that the local data of the power distribution equipment has changed, it is regarded as detecting the latest data of the power distribution equipment. Then, through the Internet of Things module, the changed local data is synchronized to the human-machine interface in the cloud. Since only the latest data of the equipment is actively pushed, the data volume is small and the bandwidth occupied is lower.

[0060] As a specific implementation of the control method of the present application, the first channel, the second channel, and the third channel in the Internet of Things module have different protocol permissions. Among them, the data of the second channel and the third channel are not parsed at the main controller end and are mainly used to upload the data analysis executed in the cloud.

[0061] A specific implementation in the present application, as the first aspect of analyzing the relationship between the data of the second channel and the data of the first channel:

[0062] Obtain the one-to-one correspondence between the temperature and humidity in the second-channel data and the stable power supply in the first-channel data in the Internet of Things module, specifically the influence of temperature and humidity on the power supply parameters of each power supply channel in the power distribution equipment; and send a request to the main controller;

[0063] Receive the request to perform parameter acquisition and update of the power supply control unit at the main controller end. Calculate the power supply parameters currently obtained by the power supply control unit in each power supply channel of the power distribution equipment at the main controller end, update the influence of the unknown situation of the power distribution distance on the power supply parameters, and send the above data to the cloud master controller;

[0064] The cloud-based master controller completes the verification between the IoT module and the data uploaded by the master controller, thereby obtaining the adjustment strategy of the power distribution equipment and giving a specific implementation plan. In fact, the IoT module can obtain various environmental data through the data perception layer, and this type of data generally has a certain lag and indirectness due to the collection by the IoT module, and it is also impossible to obtain the individual influence of each factor. The independent power supply channel in the master controller can further update the data on the actual operation conditions. On the one hand, it can correct the first-channel data of the IoT module at the cloud-based master controller end. On the other hand, it can obtain more influencing factors that cannot be comprehensively known by the IoT data perception layer through the prediction of the relationship between the actual operation parameters and the data collected in the IoT module, improving the stability of the power supply channel control.

[0065] As the second aspect of analyzing the relationship between the second-channel data and the first-channel data:

[0066] After the data in each channel is collected, it has different protocol channels in the data transmission layer. When the relationship between the second-channel data and the first-channel data is stable, the collection of the first-channel data can be closed, and the master controller mainly realizes the collection and update of the actual power supply data.

[0067] In the above implementation manner, the relationship between the third-channel data and the first-channel data is mainly described through the second-channel data, and the control information can also be obtained from the relationship between the second- and third-channel data and the first-channel data.

[0068] In the system network, the distributed power distribution equipment has the problem that the management personnel cannot clearly understand the working operation status of the power distribution equipment. The real-time and reliability of the data uploaded by the power distribution equipment are the optimization directions in the management of the power distribution equipment system control method.

[0069] As a specific implementation manner of the present application, a real-time weak current power distribution equipment control method based on the Internet of Things is disclosed, which mainly includes the following steps:

[0070] The master controller starts the communication with the power supply control unit, collects the actual operation parameters of each power supply channel, and sends an instruction to the IoT module. The IoT module parses the above instruction, obtains the startup strategy of the data perception channel, and executes the data collection and transmission of the data perception layer and the data transmission layer. The master controller and the IoT module upload data to the cloud-based master control.

[0071] The cloud-based master control obtains the data of the above IoT module and the master controller, performs analysis, and obtains the first relationship and the second relationship between the data collected by the two.

[0072] The first relationship is the relationship between the data collected by the Internet of Things module of the power supply channel and the data collected by the main controller controlling the power supply control unit;

[0073] The second relationship is the relationship between the data collected by the Internet of Things of other channels, such as the second channel and the third channel, and the data collected by the main controller controlling the power supply control unit;

[0074] The cloud total control analyzes the correction relationship between the data acquisition matrix of the first channel of the Internet of Things module and the running value from the first relationship, and generates the opening instructions for the second channel and the third channel of the Internet of Things module under the condition that it is judged that the number of monitored channels of the power supply control unit meets certain conditions, executes the acquisition of the second relationship, the cloud total control analyzes the values obtained from the above second relationship, selects some data perception acquisitions in the second channel and the third channel, or formulates the priority level of data acquisition and transmission;

[0075] Among them, under the condition that it is judged that the number of monitored channels of the power supply control unit meets certain conditions, the cloud total control further generates a power adjustment strategy for the power supply control unit, issues it to the power supply control unit for execution, and interacts with the Internet of Things module to provide an adjustment strategy for the opening and temporary closing of the data acquisition channels of the data perception layer; In short, the cloud total control executes the optimization strategy adjustment of the data protocol interaction in real time according to the occupancy of the power supply channel and the stability of the power supply parameters, so as to improve the accuracy and efficiency of the data acquisition of the power distribution equipment.

[0076] As another implementation manner of the present application, the power supply control unit responds to the power distribution strategy, feeds back the execution situation of the power distribution strategy to the main controller, determines the above execution situation, and the main controller adjusts the priority of receiving the data acquisition channels of the Internet of Things module.

[0077] As a specific implementation manner in the present application, the Internet of Things module further performs dynamic allocation adjustment of the data transmission protocol in the channel. In fact, the more the load of the power supply channel, the higher the requirement for the data perception of the device, that is, the power supply stability of the power distribution equipment will be affected by more factors. In this case, dynamically adjusting the data protocol of the channels in the data perception layer can allocate and obtain effective data and improve the efficiency of generating the adjustment strategy.

[0078] In summary, for the real-time low-voltage power distribution equipment based on the Internet of Things and its control method implemented according to this application, an Internet of Things module is integrated on the low-voltage power distribution equipment, such as LoRa, NBIot, 4G / 5G Ethernet controller and other modules, and wired or wireless network technologies are fully utilized to achieve distributed management of power distribution equipment in various long-distance and scattered scenarios. The operating system uses the FreeRTOS real-time operating system, and the MQTT, COAP, and HTTPS protocols based on TLS encryption are integrated in the power distribution equipment software to implement the function of actively pushing (PUSH) from the device to the cloud. Only the data with local changes is synchronized to the cloud, which occupies less bandwidth, has strong real-time performance, and high security.

[0079] The slave device adopts the active reporting method and reports immediately when an event occurs, which is convenient for the monitoring and control end to make quick decisions, accurately perceive, and have a clear understanding at a glance. First, the protocol requires authentication, and the server refuses to connect without a user and password; second, the data is encrypted based on TLS, and the data transmission cannot be deciphered, perfectly preventing the data from being eavesdropped and tampered with, and realizing data security. By making full use of the advantages of cloud big data and eliminating geographical restrictions, no matter how scattered the devices are, the devices and their data can be summarized and uniformly managed, which is convenient for data retrieval and analysis, and can be managed and controlled.

[0080] The above description of the embodiments is to enable those of ordinary skill in the art to understand and apply this application. It is obvious that those skilled in the art can easily make various modifications to these embodiments and apply the general principles described herein to other embodiments without creative efforts. Therefore, this application is not limited to the embodiments here, and the improvements and modifications made by those skilled in the art within the scope and spirit of this application based on the content disclosed in this application are all within the scope of this application.

Claims

1. A real-time weak-current power distribution device based on the Internet of Things, characterized in that, the real-time weak-current power distribution device based on the Internet of Things includes: a main controller for realizing the main control of the power distribution device; an Internet of Things module including a data perception layer, a data transmission layer, and a data management layer; a data interaction channel is provided between the main controller and the Internet of Things module, and the Internet of Things module realizes information interaction with the cloud total control through the main controller; at least one main power supply, corresponding to a plurality of power distribution channels, and each power distribution device can provide AC and DC power supply interfaces with different voltage ranges; a plurality of voltage conversion modules and a plurality of power supply control units are provided between the main power supply and the plurality of power distribution channels, and each voltage conversion module, each power supply control unit, and each power distribution channel form an independent power supply unit for one channel; through the control cooperation between the Internet of Things module and the main control, the power supply voltage and current requirements of cameras under multiple independent channels are output; by using the data perception channel of the Internet of Things, the stability of the power supply for each channel is detected and analyzed in real time, and the data perception system of the Internet of Things is used to assist in coordinating the power supply channels. When the power supply load is heavy, the relationship between the environment and the power supply stability can be finely perceived and analyzed, and the data and protocol channel resources can be allocated; from the perspective of the cloud total control, the weights and resources of the control permissions between the Internet of Things module and the main controller are coordinated and allocated, and various protocol types of the Internet of Things are used to dynamically allocate data transmission resources to achieve refined control of the power distribution device; the Internet of Things module includes data collection of at least three channels. The first channel is to interact with the power supply control unit to realize data collection of each power supply channel. The second channel is to perform data collection on the terminals of the power supply ports; the third channel is to collect other data channels of the power distribution device, including temperature, heat dissipation, and humidity.

2. The real-time weak-current power distribution device based on the Internet of Things according to claim 1, characterized in that, the cloud total control of the monitoring system and the main controllers set in a plurality of power distribution devices perform control in a distributed manner.

3. The real-time weak-current power distribution device based on the Internet of Things according to claim 2, characterized in that, the Internet of Things module automatically synchronizes the device status to the human-machine interface program through the COAP / MQTT / HTTPS protocol.

4. The real-time weak-current power distribution device based on the Internet of Things according to claim 3, characterized in that, the operating system of the power distribution device is the FreeRTOS operating system.

5. A control method for a real-time weak-current power distribution device based on the Internet of Things, characterized in that, the control method includes: the main controller communicates with the power supply control unit of each channel to obtain the power output and channel occupancy information of each channel; when the power output and channel occupancy reach a certain ratio, the main controller communicates with the first channel in the Internet of Things module to open the corresponding data perception layer channel and start the data perception of the corresponding channel; The Internet of Things module analyzes the data collected by the first channel, determines the power distribution of the power supply channel, and controls the data sensing collection of the second and third channels in the case that the power distribution exceeds the set range, so as to obtain the overall operation condition of the power distribution equipment; the first channel is used to interact with the power supply control unit to realize the data collection of each power supply channel, the second channel is for the terminal of the power supply port to execute data collection; the third channel is for the collection of other data channels of the power distribution equipment, including temperature, heat dissipation, and humidity; After the Internet of Things module enables the data collection of the second and third channels, the data management layer of the Internet of Things module analyzes the relationship between the data of the second channel and the data of the first channel based on the data collected by the second channel; Wherein, a data interaction channel is arranged between the main controller and the Internet of Things module, and the Internet of Things module realizes information interaction with the cloud total control through the main controller; there is at least one main power supply, corresponding to multiple power distribution channels, and each power distribution equipment can provide AC and DC power supply interfaces with different voltage ranges; multiple voltage conversion modules and multiple power supply control units are arranged between the main power supply and the multiple power distribution channels, and each voltage conversion module, each power supply control unit and each power distribution channel form an independent power supply unit for one channel; Through the control cooperation between the Internet of Things module and the main control, the power supply voltage and current requirements of the cameras under multiple independent channels are output; the stability of the power supply for each channel is detected and analyzed in real time by using the data sensing channel of the Internet of Things, and the data sensing system of the Internet of Things is used to assist in coordinating the power supply channels to finely sense and analyze the relationship between the environment and the power supply stability under the condition of heavy power supply load, and allocate data and protocol channel resources; Coordinate and allocate the weights and resources of the control permissions between the Internet of Things module and the main controller from the perspective of the cloud total control, and dynamically allocate data transmission resources by using various protocol types of the Internet of Things to achieve the refined control of the power distribution equipment; After the Internet of Things module obtains the data, it uploads the data to the cloud total control through the main control module, and the overall optimization plan for the power supply stability is allocated through the data calculation of the cloud total control; For each power supply control unit, the historical output current, voltage, and power parameters are analyzed to determine whether there is a trend of safety events occurring, and an alarm message is output when it is determined that there is a trend of safety events occurring.

6. The control method for a real-time weak current power distribution equipment based on the Internet of Things as described in claim 5, characterized in that, further comprising: detecting whether the local data of the power distribution equipment has changed; after detecting that the local data has changed, synchronize the changed local data to the cloud through the Internet of Things module.

7. The control method for a real-time weak current power distribution equipment based on the Internet of Things as described in claim 5, characterized in that, the operating system of the power distribution equipment is the FreeRTOS operating system.

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