Energy-saving device applied to digital indoor distribution system

Abstract

The utility model provides an energy-saving device applied to a digital indoor distribution system, and relates to the technical field of micro base station energy saving, the energy-saving device comprises a housing, a circuit board arranged in the housing, and a plurality of power supply modules, a switch module, a master control module and a communication module arranged on the circuit board, each power supply module corresponds to one path of pRRU; the communication module is used for establishing communication connection with a server, receiving a turn-on signal or a turn-off signal about a certain path of pRRU from the server, and converting the turn-on signal or the turn-off signal into a turn-on instruction or a turn-off instruction through the main control module, and the switch module is used for controlling the power supply module to turn on a power supply of the certain path of pRRU according to the turn-on instruction. Or controlling the power supply module to cut off the power supply of the certain path of pRRU according to the turn-off instruction. The energy-saving device provided by the utility model can realize remote on-off control of the pRRU, and effectively solves the technical problems of high energy consumption, incomplete power saving and the like of the pRRU in the prior art.

Description

Technical Field

[0001] The utility model relates to the technical field of micro base station energy saving, in particular to an energy saving device applied to a digital indoor distribution system. Background Art

[0002] The digital indoor distribution system, also known as the digital indoor distribution system, is an indoor signal coverage solution that can support multi-frequency, multi-mode, and multi-antenna technologies to achieve flexible experience management and smooth evolution. The main hardware of the digital indoor distribution system includes the base station side, RHUB (Remote radio unit hub), and pRRU (Picro Remote Radio Unit). The base station side is similar to a BBU (Base Band Unit) and is responsible for connecting to the outdoor base station, providing a signal source, and network management. The RHUB is responsible for distributing the signals from the base station side to different pRRUs and can use network cables or optical fibers as transmission media. The pRRU is responsible for converting the signals into radio waves and covering the indoor scenario through antennas, and can support multi-frequency, multi-mode, and multi-antenna technologies.

[0003] The advantages of the digital indoor distribution system are high performance, large capacity, easy deployment, and smooth evolution. However, there are also some problems. For example, the pRRU integrates a 5G (5th Generation Mobile Communication Technology) chip, which has a powerful computing function and is a network device for high-traffic applications. Due to the tidal effect in time and space, in the case of low traffic or even no traffic, the pRRU still maintains a high-traffic state, resulting in waste of power resources. Although many manufacturers have proposed to put the device into sleep mode during low traffic, this sleep mode is not completely energy-saving. Summary of the Utility Model

[0004] The present utility model is completed in order to at least partially solve the technical problems such as high energy consumption and incomplete power saving of the pRRU existing in the prior art.

[0005] The present utility model provides an energy-saving device applied to a digital in-building distribution system. The energy-saving device is connected in series on the transmission line between a remote radio head unit hub (RHUB) and multiple small remote radio head units (pRRUs). The energy-saving device includes: a housing, a circuit board disposed inside the housing, and multiple power modules, a switch module, a main control module, and a communication module disposed on the circuit board. Each power module corresponds to one pRRU. Wherein, each power module is electrically connected to the switch module and a corresponding pRRU respectively. The switch module is also electrically connected to the main control module, and the main control module is also electrically connected to the communication module. The communication module is used to establish a communication connection with a server, receive an on-signal or an off-signal of a certain pRRU from the server and transmit it to the main control module. The main control module is used to convert the on-signal or the off-signal into an on-instruction or an off-instruction and transmit it to the switch module. The switch module is used to control the power module corresponding to the certain pRRU to turn on the power of the certain pRRU according to the on-instruction, or control the power module corresponding to the certain pRRU to cut off the power of the certain pRRU according to the off-instruction.

[0006] Optionally, the energy-saving device further includes: multiple local switches disposed on the outer surface of the housing, each local switch corresponding to one power module. Each local switch is electrically connected to a corresponding power module and is used to control the power module corresponding to it to turn on the power of a pRRU corresponding to the power module according to a user's turn-on operation, or control the power module corresponding to it to cut off the power of a pRRU corresponding to the power module according to a user's turn-off operation.

[0007] Optionally, the energy-saving device further includes: multiple indicator lights disposed on the outer surface of the housing, each indicator light corresponding to one power module. Each indicator light is electrically connected to a corresponding power module and is used to light up when the power module corresponding to it turns on the power of a pRRU corresponding to the power module, and go out when the power module corresponding to it cuts off the power of a pRRU corresponding to the power module.

[0008] Optionally, the switch module of the energy-saving device includes multiple relay drive circuits, or multiple electronic switch drive circuits, wherein each relay drive circuit corresponds to one power module, or each electronic switch drive circuit corresponds to one power module.

[0009] Optionally, the main control module of the energy-saving device adopts a microcontroller unit (MCU); and / or, the communication module includes a wireless communication module and a SIM card.

[0010] Optionally, the energy-saving device further includes: a plurality of monitoring modules disposed on the circuit board, each monitoring module corresponding to one path of pRRU; each monitoring module is electrically connected to the main control module and is used for real-time monitoring of the current data and voltage data of the corresponding path of pRRU, and transmitting the current data and voltage data to the main control module, and the main control module is further used for performing data processing on the current data and voltage data, and sending the processed current data and voltage data to the server through the communication module.

[0011] Optionally, the energy-saving device further includes: a plurality of monitoring modules disposed on the circuit board, each monitoring module corresponding to one path of pRRU, and each monitoring module is electrically connected to the main control module; the communication module is further used for receiving a query request for the current data and voltage data of a certain path of pRRU from the server and transmitting it to the main control module, and the main control module is further used for sending a query instruction to the monitoring module corresponding to the query request according to the query request, and the corresponding monitoring module is used for measuring the current data and voltage data of the corresponding path of pRRU according to the query instruction, and transmitting the current data and voltage data to the main control module, and the main control module is further used for performing data processing on the current data and voltage data, and sending the processed current data and voltage data to the server through the communication module.

[0012] Optionally, the energy-saving device further includes: a display module disposed on the outer surface of the housing; the display module is electrically connected to the main control module, and the main control module is further used for transmitting the processed current data and voltage data to the display module, and the display module is used for displaying the processed current data and voltage data.

[0013] Optionally, the energy-saving device further includes: a display module disposed on the outer surface of the housing; the display module is electrically connected to the main control module; the main control module is further used for receiving, through the communication module, data on the working state and load state of each path of pRRU from the server, and transmitting the data on the working state and load state of each path of pRRU to the display module, wherein the server obtains the data on the working state and load state of each path of pRRU based on the processed current data and voltage data corresponding to each path of pRRU and transmits it to the main control module through the communication module; the display module is used for displaying the working state and load state of each path of pRRU.

[0014] Optionally, the energy-saving device further includes: a prompting module; the prompting module is electrically connected to the main control module; the main control module is further configured to receive, through the communication module, a fault warning signal or a maintenance reminder signal from the server and transmit the signal to the prompting module, where the server performs fault prediction and maintenance judgment based on the processed current data and voltage data corresponding to each pRRU and the historical current data and voltage data of each pRRU, generates a fault warning signal or a maintenance reminder signal for one or more pRRUs and transmits the signal to the main control module through the communication module; the prompting module is configured to give corresponding prompts to the user according to the fault warning signal or the maintenance reminder signal.

[0015] Optionally, the monitoring module includes a voltage acquisition circuit and a current acquisition circuit.

[0016] The technical solution provided by the present utility model may include the following beneficial effects:

[0017] The energy-saving device applied to the digital indoor distribution system provided by the present utility model can realize remote on / off control of the pRRU through the coordinated work of the power supply module, the switch module, the main control module, the communication module and the server, without the need for on-site manual operation. It can not only significantly reduce the power consumption and energy consumption of the pRRU, achieve energy saving, but also avoid on-site manual operation, improve the operation and maintenance efficiency and safety, thus effectively solving the technical problems such as high energy consumption of the pRRU and incomplete power saving existing in the prior art.

[0018] Other features and advantages of the present utility model will be described in the following specification, and, in part, will be obvious from the specification, or will be understood by implementing the present utility model. The objectives and other advantages of the present utility model can be realized and obtained by the structures specifically pointed out in the specification, the claims and the drawings. Description of the Drawings

[0019] The drawings are used to provide a further understanding of the technical solution of the present utility model, and constitute a part of the specification. Together with the embodiments of the present utility model, they are used to explain the technical solution of the present utility model and do not constitute a limitation to the technical solution of the present utility model.

[0020] Figure 1 It is an application scenario diagram of the energy-saving device applied to the digital indoor distribution system provided by the embodiment of the present utility model;

[0021] Figure 2 It is a partial structural schematic diagram of the energy-saving device applied to the digital indoor distribution system provided by the embodiment of the present utility model;

[0022] Figure 3 It is a schematic diagram of the principle of the energy-saving device applied to the digital indoor distribution system provided by the embodiment of the present utility model;

[0023] Figure 4 Schematic diagram of the circuit structure of the power supply module provided by the embodiment of the present utility model;

[0024] Figure 5 Schematic diagram of the circuit structure of the first electronic switch driving circuit in the switch module provided by the embodiment of the present utility model;

[0025] Figure 6 Schematic diagram of the circuit structure of the first current acquisition circuit in the monitoring module provided by the embodiment of the present utility model;

[0026] Figure 7 Schematic diagram of the circuit structure of the first voltage acquisition circuit in the monitoring module provided by the embodiment of the present utility model;

[0027] Figure 8 Schematic diagram of the working process of the energy-saving device applied to the digital in-building distribution system provided by the embodiment of the present utility model;

[0028] Figure 9 Schematic diagram of the display interface of the remote server provided by the embodiment of the present utility model.

[0029] In the figure: 100 - energy-saving device; 101 - circuit board; 102 - power supply module; 103 - switch module; 104 - main control module; 105 - communication module; 106 - monitoring module; 200 - RHUB; 300 - pRRU; 400 - server. Detailed implementation manners

[0030] To make the objectives, technical solutions and advantages of the embodiments of the present utility model clearer, the following will describe in detail the specific implementation manners of the present utility model with reference to the accompanying drawings. It should be understood that the specific implementation manners described herein are only used to illustrate and explain the present utility model, and are not used to limit the present utility model.

[0031] It should be noted that in the description of the present utility model, the orientation or positional relationship indicated by various orientation terms is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model 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. Therefore, it should not be construed as a limitation of the present utility model. And, without conflict, the embodiments of the present utility model and the features in the embodiments can be combined with each other.

[0032] In the description of the present utility model, the terms "comprise", "include" or any other variant thereof are intended to cover non-exclusive inclusion, such that a process, method, article or system comprising a series of elements not only includes those elements but also includes other elements not expressly listed, or further includes elements inherent to such process, method, article or system. Without further limitation, an element defined by the statement "comprising one..." does not exclude the presence of additional identical elements in the process, method, article or system comprising such element.

[0033] In the related art, the digital in-building distribution system has the following disadvantages:

[0034] 1) The power consumption of the pRRU is relatively high, resulting in increased energy consumption, affecting the performance and stability of the pRRU, and at the same time increasing the electricity cost of the operator, which does not meet the goal of energy conservation and emission reduction;

[0035] 2) The on / off and monitoring of the pRRU are not convenient, requiring manual operation and maintenance, which is time-consuming and laborious, and there are also certain safety risks, affecting the operation and maintenance efficiency and safety;

[0036] 3) The pRRU cannot achieve remote and efficient data transmission, affecting the intelligent level of the system.

[0037] In view of the above problems, the embodiments of the present utility model provide an energy-saving device applied to a digital in-building distribution system, which is used to remotely control and monitor the pRRU, facilitating the management and maintenance by the operation and maintenance personnel and improving the operation and maintenance efficiency and safety. The following is a detailed description through specific embodiments.

[0038] As Figure 1 shown, the energy-saving device 100 is connected in series on the transmission line between the RHUB 200 and multiple pRRUs 300. Generally, an RHUB can have 8 output ports for 8 pRRUs. Correspondingly, each energy-saving device is connected to 8 pRRUs; or, an RHUB can have 12 output ports for 12 pRRUs. Correspondingly, each energy-saving device is connected to 12 pRRUs. The number of pRRUs connected to each energy-saving device specifically depends on the model and configuration of the RHUB. As for the installation position of each energy-saving device, it should be installed at a position convenient for the operation and maintenance personnel to install, observe and operate.

[0039] As Figure 1 and Figure 2As shown in the figure, the energy-saving device 100 includes: a housing, a circuit board 101 disposed within the housing, and a plurality of power modules 102, a switch module 103, a main control module 104, and a communication module 105 disposed on the circuit board 101. The switch module 103 may also be referred to as an on-off control module. Among them, a plurality of power modules 102 are installed inside the energy-saving device 100. Each power module 102 corresponds to one path of pRRU, and each power module 102 is electrically connected to the switch module 103 and a corresponding path of pRRU respectively; the switch module 103 is also electrically connected to the main control module 104; the main control module 104 is also electrically connected to the communication module 105.

[0040] Specifically, as Figures 1 to 3 shown in the figure, the communication module 105 is used to establish a communication connection with the server 400, receive an on signal or an off signal of a certain path of pRRU from the server 400 and transmit it to the main control module 104. The communication module 105 is installed inside the energy-saving device 100. A suitable communication method and protocol are selected for the communication module 105 to establish a connection with the server 400 to realize the sending and receiving of data. The server 400 can be a remote server. The main control module 104 is used to convert the on signal or the off signal into an on command or an off command and transmit it to the switch module 103. The switch module 103 is used to control the power module 102 corresponding to the certain path of pRRU to turn on the power of the certain path of pRRU according to the on command, or control the power module 102 corresponding to the certain path of pRRU to cut off the power of the certain path of pRRU according to the off command, so as to realize the on-off control of the pRRU through a remote signal.

[0041] In practical applications, during the night rest period or when there is no business demand in certain places, the remote on-off control of certain pRRUs is realized through the remote server and the energy-saving device, so as to realize the energy saving and heat dissipation of the pRRU, reduce the power consumption and energy consumption of the pRRU, reduce the electricity cost of the operator, and improve the energy efficiency, reliability and environmental protection of the digital in-building distribution system. It is also possible to perform timed on-off of certain pRRUs through the server without affecting the user perception, so as to save the electric energy of the pRRU device to the greatest extent and improve the device usage efficiency.

[0042] In this embodiment, through the collaborative work of the power module, the switch module, the main control module, the communication module and the server, the remote on-off control of the pRRU can be realized without on-site manual operation, which can not only significantly reduce the power consumption and energy consumption of the pRRU, realize energy saving, but also avoid on-site manual operation, improve the operation and maintenance efficiency and safety, thus effectively solving the technical problems such as high energy consumption and incomplete power saving of the pRRU existing in the prior art.

[0043] In one example, the power supply module 102 adopts an existing power supply circuit, which may include components such as a power supply interface, filter capacitors, and a rectifier bridge. It is responsible for converting the external AC power supply into a stable DC power supply to cut off or connect the power supply of the corresponding pRRU, and at the same time supply power to other modules in the energy-saving device. For example, Figure 4 As shown, the power supply circuit may include a power management chip TX4138, where the EN pin is pulled high or floating, the chip works, and outputs a 5V DC voltage.

[0044] In one example, the switch module 103 includes multiple relay drive circuits. Each relay drive circuit corresponds to a power supply module 102, and correspondingly, each relay drive circuit corresponds to one pRRU. Since the relay is a commonly used existing electronic device, the description of itself and the drive circuit is omitted in this embodiment.

[0045] In another example, the switch module 103 includes multiple electronic switch drive circuits. Each electronic switch drive circuit corresponds to a power supply module 102, and correspondingly, each electronic switch drive circuit corresponds to one pRRU. As Figure 5 shown, taking the first electronic switch drive circuit (i.e., the electronic switch drive circuit corresponding to the first pRRU) as an example, it is used to control the power supply module corresponding to the first pRRU to connect the power supply of the first pRRU according to the received turn-on instruction, and control the power supply module corresponding to the first pRRU to cut off the power supply of the first pRRU according to the received turn-off instruction.

[0046] In one example, the main control module 104 adopts an existing microcontroller (MCU). The MCU is located in the central position of the entire circuit board 101 and is the brain of the entire energy-saving device 100. The MCU is responsible for receiving and processing signals from other modules, executing preset program logic, and controlling other modules to perform corresponding operations, such as controlling the switch module 103 to perform on / off control on each pRRU. Since the MCU is a commonly used existing electronic device, the description of itself and the peripheral circuits is omitted in this embodiment.

[0047] In one example, the communication module 105 includes an existing wireless communication module and a SIM card (Subscriber Identity Module). The communication module 105 is responsible for the communication between the energy-saving device 100 and the outside, such as data exchange with the server 400.

[0048] Among them, the wireless communication module is a hardware module integrating wireless communication functions, used to achieve wireless data transmission between devices. It usually includes an antenna, a modem, and other necessary circuits for transmitting and receiving wireless signals. Specifically, the Air780E module can be used as the wireless communication module.

[0049] A SIM card is a small integrated circuit card, mainly used to store user identity information and allow the device to access the mobile communication network.

[0050] When communicating using the cellular network, the wireless communication module usually needs to insert a SIM card so that the wireless communication module can connect to the mobile network. In some scenarios that require remote control or data collection, the wireless communication module is used for data transmission, while the SIM card ensures that the wireless communication module accesses the operator's network.

[0051] The communication module 105 supports 4G and 5G network connections, and network configuration and data transmission are carried out through AT (Attention) commands.

[0052] In a specific embodiment, the energy-saving device 100 further includes: a plurality of local switches arranged on the outer surface of the housing, and each local switch corresponds to a power module. Among them, the local switch can adopt a push-button switch.

[0053] Each local switch is electrically connected to a corresponding power module 102, and is used to control the connection or disconnection of the power supply of a pRRU corresponding to the power module according to the user's opening operation, or to control the disconnection of the power supply of a pRRU corresponding to the power module according to the user's closing operation.

[0054] In this embodiment, the on / off control of the pRRU can also be achieved through the local switch (button) to realize the hard shutdown of the pRRU, so as to realize the on-site opening and closing of the pRRU.

[0055] In a specific embodiment, the energy-saving device 100 further includes: a plurality of indicator lights arranged on the outer surface of the housing, and each indicator light corresponds to a power module.

[0056] Each indicator light is electrically connected to a corresponding power module 102, and is used to light up when the corresponding power module 102 connects the power supply of a pRRU corresponding to the power module, and to go out when the corresponding power module 102 cuts off the power supply of a pRRU corresponding to the power module.

[0057] In this embodiment, corresponding indicator lights are respectively set for each power module to display the current state of the corresponding power module. Specifically, it shows the on / off state of one path of pRRU corresponding to each display power module (the light is on when connected and off when disconnected), which is convenient for the operation and maintenance personnel to check the on / off situation of each path of pRRU on site.

[0058] In some related technologies, since pRRUs are usually deployed in concealed or high-altitude locations indoors, such as ceilings, walls, columns, etc., these locations are not easy to manage and maintain, requiring professional tools and personnel, and there are also certain safety risks. To solve this problem, the energy-saving device of the embodiment of the present utility model also provides a remote monitoring function for pRRUs, which is specifically described as follows.

[0059] In a specific embodiment, the energy-saving device 100 further includes: a plurality of monitoring modules 106 arranged on the circuit board 101, and each monitoring module 106 corresponds to one path of pRRU.

[0060] Each monitoring module 106 is electrically connected to the main control module 104, and is used to monitor the current data and voltage data of the corresponding path of pRRU in real time, and transmit the monitored current data and voltage data to the main control module 104. The main control module 104 is also used to process the current data and voltage data, and send the processed current data and voltage data to the server 400 through the communication module 105. Among them, monitoring refers to the long-term and continuous tracking and observation of a specific object to understand its change trends and rules.

[0061] In an example, the monitoring module 106 includes an existing voltage acquisition circuit and current acquisition circuit. Among them, the voltage acquisition circuit includes a voltage sensor, such as a voltage-dividing resistor; the current acquisition circuit includes a current sensor, such as a current transformer. The voltage sensor and current sensor can convert the acquired analog signal into a digital signal, and then transmit it to the MCU (main control module) for data processing, and the MCU then sends the processed data to the server 400 through the communication module 105.

[0062] As Figure 6 shown, taking the first path of current acquisition circuit (i.e., the current acquisition circuit corresponding to the first path of pRRU) as an example, it is used to collect the current data of the first path of pRRU in real time and transmit it to the main control module 104. As Figure 7 shown, taking the first path of voltage acquisition circuit (i.e., the voltage acquisition circuit corresponding to the first path of pRRU) as an example, it is used to collect the voltage data of the first path of pRRU in real time and transmit it to the main control module 104.

[0063] After the remote server receives the current and voltage monitoring data, as Figure 9As shown, the remote server can display the current current and voltage monitoring data of each pRRU in real time through the remote management software installed thereon. In addition, the operation and maintenance personnel can also remotely view the status (online or offline) of each current pRRU through the remote management software of the remote server; they can remotely control the on / off of each pRRU through the remote management software of the remote server; they can also set a timed shutdown task through the remote management software of the remote server, such as shutting down the corresponding pRRU at night or when there is no usage requirement. In addition, since the communication module 105 includes a SIM card, the operation and maintenance personnel can also view the signal strength of the SIM card through the remote management software of the remote server.

[0064] In this embodiment, the current and voltage of each pRRU are monitored in real time by multiple monitoring modules 106 and then sent to the remote server, realizing the automatic remote monitoring of the pRRU, facilitating the operation and maintenance personnel to perform remote management and maintenance, and improving the operation and maintenance efficiency and security.

[0065] Furthermore, the server 400 can also be a local server, that is, in addition to the remote server, a local server can also be set locally in the energy-saving device 100. The energy-saving device 100 also establishes a communication connection with the local server through the communication module 105. The local server can play the same role as the remote server. The local management software is installed on the local server. Through the local management software of the local server, the operation and maintenance personnel can also view the current current and voltage monitoring data of each pRRU, the status (online or offline) of each current pRRU, and can also set a timed shutdown task through the local management software of the local server, such as shutting down the corresponding pRRU at night or when there is no usage requirement, and can also view the signal strength of the SIM card through the local management software of the local server.

[0066] In this embodiment, the current and voltage of each pRRU are monitored in real time by multiple monitoring modules 106 and then sent to the local server, realizing the automatic local monitoring of the pRRU, facilitating the operation and maintenance personnel to perform on-site management and maintenance, and improving the operation and maintenance efficiency and security.

[0067] In a specific embodiment, the communication module 105 is further configured to receive a query request for current data and voltage data of a certain pRRU from the server 400 and transmit it to the main control module 104. The main control module 104 is further configured to send a query instruction to the corresponding monitoring module 106 according to the query request. The corresponding monitoring module 106 is configured to measure the current data and voltage data of the corresponding pRRU according to the query instruction and transmit the current data and voltage data to the main control module 104. The main control module 104 is further configured to process the current data and voltage data and send the processed current data and voltage data to the server 400 through the communication module 105.

[0068] In this embodiment, the remote / local server can also send a query request for current data and voltage data of a certain pRRU to the main control module 104 through the communication module 105. The main control module 104 controls the corresponding monitoring module 106 to collect data according to the query request, thereby triggering the active remote / local monitoring of the current and voltage of the certain pRRU, which is convenient for the operation and maintenance personnel to query the current and voltage data of the required pRRU at any time according to the needs.

[0069] Moreover, the energy-saving device performs data interaction with the server through the communication module 105. The MQTT protocol can be used as the communication protocol, and it has two networking methods: WIFI (2.4G) and 4G Cat1 (full Netcom) to achieve efficient data transmission and low power consumption, and improve the intelligent level of the energy-saving device.

[0070] In a specific embodiment, the energy-saving device 100 further includes: a display module disposed on the outer surface of the housing.

[0071] The display module is electrically connected to the main control module 104. The main control module 104 is further configured to transmit the processed current data and voltage data to the display module, and the display module is configured to display the processed current data and voltage data.

[0072] In this embodiment, in addition to being able to view the current and voltage data of each pRRU at the remote / local server, the current and voltage data of each pRRU can also be viewed on the display module provided on the housing of the energy-saving device, which is convenient for the operation and maintenance personnel to view the relevant data on site.

[0073] In a specific embodiment, the main control module 104 is further configured to receive, through the communication module 105, data on the working status and load status of each pRRU from the server 400, and transmit the data on the working status and load status of each pRRU to the display module, where the server 400 obtains the data on the working status and load status of each pRRU based on the processed current data and voltage data corresponding to each pRRU and transmits the data to the main control module 104 through the communication module 105. The display module is configured to display the working status and load status of each pRRU.

[0074] Among them, the working status refers to the actual status of the device during operation, and the actual status of the device can be determined by monitoring the changes in the current and voltage of the device. The working status can be divided into a normal status, a fault status, and a shutdown status.

[0075] The load status refers to the degree of the working load borne by the device during operation, and the load status of the device can be evaluated by monitoring parameters such as the current, voltage, and power of the device. The load status can be divided into three situations: light load, medium load, and heavy load.

[0076] In this embodiment, the server 400 can also obtain the working status and load status of each pRRU based on the current and voltage data of each pRRU, which is convenient for the operation and maintenance personnel to master the actual status of each pRRU. In addition, the working status and load status of each pRRU can also be viewed on the display module provided on the housing of the energy-saving device, which is convenient for the operation and maintenance personnel to view the relevant data on site.

[0077] In a specific embodiment, the energy-saving device 100 further includes: a prompting module. The prompting module is electrically connected to the main control module 104. Specifically, the prompting module can be an existing sound alarm, a light alarm, or a sound and light alarm.

[0078] The main control module 104 is further configured to receive, through the communication module 105, a fault warning signal or a maintenance reminder signal from the server 400 and transmit the signal to the prompting module, where the server 400 performs fault prediction and maintenance judgment based on the processed current data and voltage data corresponding to each pRRU and the historical current data and voltage data of each pRRU, generates a fault warning signal or a maintenance reminder signal for one or more pRRUs and transmits the signal to the main control module 104 through the communication module 105; the prompting module is configured to give corresponding prompts to the user according to the fault warning signal or the maintenance reminder signal.

[0079] In this embodiment, by setting a prompting module on the housing of the energy-saving device, the user can be prompted accordingly when the server generates a fault warning signal or a maintenance reminder signal for a certain path or certain paths of pRRU. The prompts corresponding to the fault warning signal should be different from those corresponding to the maintenance reminder signal. For example, the prompting sound corresponding to the fault warning signal is different from the prompting sound corresponding to the maintenance reminder signal (different sound frequencies or melodies), or the prompting light corresponding to the fault warning signal is different from the prompting light corresponding to the maintenance reminder signal (different colors or flashing frequencies).

[0080] Combined with the specific structure of the aforementioned energy-saving device, the communication process and the working process between the energy-saving device and the server will be described in detail below.

[0081] The specific communication process is as follows:

[0082] When the pRRU 300 needs to work, the server 400 (i.e., the platform) will send a connection signal to the communication module 105 through the MQTT protocol. The communication module 105 will transmit the connection signal to the main control module 104. The main control module 104 will then convert the connection signal into an opening instruction, that is, convert the connection signal into a first electrical signal and transmit it to the switch module 103. The switch module 103 will open the transmission line according to the opening instruction, so that the pRRU 300 can receive the signal and work normally;

[0083] When the pRRU 300 does not need to work, the server 400 (i.e., the platform) will send a disconnection signal to the communication module 105 through the MQTT protocol. The communication module 105 will transmit the disconnection signal to the main control module 104. The main control module 104 will then convert the disconnection signal into a closing instruction, that is, convert the disconnection signal into a second electrical signal and transmit it to the switch module 103. The switch module 103 will close the transmission line according to the closing instruction, so that the pRRU 300 no longer receives the signal, realizing energy saving for the pRRU 300;

[0084] The monitoring module 106 can monitor parameters such as voltage, current, and power of the transmission line in real time, and send these parameters to the server 400 through the main control module 104 via the communication module 105. The server 400 can perform data analysis and processing based on these parameters. For example, it can judge the working state and load condition of the pRRU 300 according to the changes in voltage and current, and can judge the efficiency and loss of the transmission line according to the change in power. Fault prediction and maintenance reminder, etc. can be carried out by combining the historical change trends of current data and voltage data.

[0085] The specific working process is as follows:

[0086] As Figure 8As shown, when the energy-saving device is powered on, it will automatically start and read the stored data, and then attempt to initialize the 4G / 5G module to establish a network connection. If the initialization of the 4G / 5G module fails, the energy-saving device will keep retrying until it succeeds or reaches the maximum number of attempts. Once the 4G / 5G module is successfully initialized, the energy-saving device will connect to the remote / local server. If the first connection fails, the energy-saving device will automatically reconnect until it succeeds.

[0087] After the connection is successful, the energy-saving device enters the main process, starts to collect current and voltage data and calculate electric energy, and at the same time collects the temperature and humidity information of the environment, and performs channel on / off control or timing tasks according to the preset logic or remote / local server instructions. All the collected data will be reported to the remote / local server. The remote / local server executes the control logic based on the data and sends possible control instructions to the energy-saving device. The energy-saving device adjusts its operations according to these control instructions, forming an automatically running loop process.

[0088] The energy-saving device provided by the embodiment of the present utility model for the digital distributed antenna system can perform remote on / off control on some pRRUs during the night rest period or when there is no service demand in some places, effectively reducing the power consumption and energy consumption of the pRRUs, realizing the energy saving of the pRRUs, reducing the electricity expenses of the operator, and improving the energy efficiency, reliability and environmental friendliness of the digital distributed antenna system; the energy-saving device also facilitates the management and maintenance of the operation and maintenance personnel, improving the operation and maintenance efficiency and safety; moreover, through the remote data interaction with the server, adopting advanced communication methods and protocols, it realizes the efficient transmission and low power consumption of data, and improves the intelligent level of the energy-saving device.

[0089] Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present utility model, rather than to limit it; although the present utility model has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements on some or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present utility model.

Claims

1. An energy-saving device applied to a digital in-building distribution system, characterized in that The energy-saving device is connected in series on the transmission line between the remote radio frequency transmitting unit hub RHUB and multiple small remote radio frequency transmitting units pRRU. The energy-saving device includes: a housing, a circuit board disposed in the housing, and a plurality of power modules, switch modules, main control modules, and communication modules disposed on the circuit board. Each power module corresponds to one pRRU; wherein each power module is electrically connected to the switch module and a corresponding pRRU respectively, the switch module is also electrically connected to the main control module, and the main control module is also electrically connected to the communication module; the communication module is used to establish a communication connection with the server, receive an on-signal or off-signal of a certain pRRU from the server and transmit it to the main control module, and the main control module is used to convert the on-signal or off-signal into an on-instruction or off-instruction and transmit it to the switch module. The switch module is used to control the power module corresponding to the certain pRRU to turn on the power of the certain pRRU according to the on-instruction, or control the power module corresponding to the certain pRRU to cut off the power of the certain pRRU according to the off-instruction.

2. The energy-saving device according to claim 1, characterized in that, It further includes: A plurality of local switches disposed on the outer surface of the housing, each local switch corresponding to one power module; each local switch is electrically connected to a corresponding power module and is used to control the power module corresponding to it to turn on the power of a pRRU corresponding to the power module according to the user's on-operation, or control the power module corresponding to it to cut off the power of a pRRU corresponding to the power module according to the user's off-operation.

3. The energy-saving device according to claim 1, wherein, It further includes: A plurality of indicator lights disposed on the outer surface of the housing, each indicator light corresponding to one power module; each indicator light is electrically connected to a corresponding power module and is used to light up when the power module corresponding to it turns on the power of a pRRU corresponding to the power module, and go out when the power module corresponding to it cuts off the power of a pRRU corresponding to the power module.

4. The energy-saving device according to any one of claims 1 to 3, characterized in that, The switch module includes a plurality of relay drive circuits, or a plurality of electronic switch drive circuits, wherein each relay drive circuit corresponds to one power module, or each electronic switch drive circuit corresponds to one power module.

5. The energy-saving device according to any one of claims 1 to 3, characterized in that, The main control module adopts a microcontroller MCU; and / or, the communication module includes a wireless communication module and a SIM card.

6. The energy-saving device according to claim 1, characterized in that, It further includes: A plurality of monitoring modules disposed on the circuit board, each monitoring module corresponding to one pRRU; each monitoring module is electrically connected to the main control module and is used to monitor the current data and voltage data of the corresponding pRRU in real time, and transmit the current data and voltage data to the main control module. The main control module is also used to process the current data and voltage data and send the processed current data and voltage data to the server through the communication module.

7. The energy-saving device according to claim 1, characterized in that, It further includes: A plurality of monitoring modules are provided on the circuit board, each monitoring module corresponding to one path of pRRU, and each monitoring module is electrically connected to the main control module; the communication module is further configured to receive a query request for current data and voltage data of a certain path of pRRU from the server and transmit it to the main control module, and the main control module is further configured to send a query instruction to the monitoring module corresponding to the query request according to the query request, and the corresponding monitoring module is configured to measure the current data and voltage data of the corresponding path of pRRU according to the query instruction and transmit the current data and voltage data to the main control module, and the main control module is further configured to perform data processing on the current data and voltage data and send the processed current data and voltage data to the server through the communication module.

8. The energy-saving device according to claim 6 or 7, characterized in that, It further includes: A display module provided on the outer surface of the housing; the display module is electrically connected to the main control module, and the main control module is further configured to transmit the processed current data and voltage data to the display module, and the display module is configured to display the processed current data and voltage data.

9. The energy-saving device according to claim 6 or 7, characterized in that It further includes: A display module provided on the outer surface of the housing; the display module is electrically connected to the main control module; the main control module is further configured to receive, through the communication module, data on the working state and load state of each path of pRRU from the server and transmit the data on the working state and load state of each path of pRRU to the display module, wherein the server obtains the data on the working state and load state of each path of pRRU based on the processed current data and voltage data respectively corresponding to each path of pRRU and transmits it to the main control module through the communication module; the display module is configured to display the working state and load state of each path of pRRU.

10. The energy-saving device according to claim 6 or 7, characterized in that, It further includes: A prompt module; the prompt module is electrically connected to the main control module; the main control module is further configured to receive, through the communication module, a fault warning signal or a maintenance reminder signal from the server and transmit it to the prompt module, wherein the server performs fault prediction and maintenance judgment based on the processed current data and voltage data respectively corresponding to each path of pRRU and the historical current data and voltage data of each path of pRRU, generates a fault warning signal or a maintenance reminder signal for one or several paths of pRRU and transmits it to the main control module through the communication module; the prompt module is configured to give corresponding prompts to the user according to the fault warning signal or the maintenance reminder signal.

11. The energy-saving device according to claim 6 or 7, characterized in that The monitoring module includes a voltage acquisition circuit and a current acquisition circuit.

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