E1 signal switching device
By employing a highly integrated chassis design and power backup mechanism in the E1 signal switching device, the problems of large device size and unstable power supply are solved, achieving space saving, cost reduction and stability improvement, and simplifying the maintenance process.
Patent Information
- Application Number
- CN202422701168.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-06
- Publication Date
- 2025-11-21
- Estimated Expiration
- 2034-11-06
AI Technical Summary
Existing E1 signal switching equipment is large in size, has low integration, and lacks a power backup mechanism, resulting in poor equipment stability and affecting business continuity.
Design an E1 signal switching device with a highly integrated chassis structure containing multiple E1 switching boards and power control boards. Power, data and control signals are transmitted through the backplane. It supports hot backup of multiple power control boards and has flexible power management and network configuration capabilities.
It effectively saves data center space, reduces equipment costs, improves equipment stability and reliability, reduces business interruptions caused by power failures, simplifies maintenance work, and improves maintenance efficiency and manageability.
Smart Images
Figure CN223582439U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to communication technical field especially relates to a kind of E1 signal switching device. BACKGROUND
[0002] E1 signal as an important digital transmission link, plays a key role in voice, data and video and other various service fields. With the continuous evolution of communication technology and the increasing complexity of various application scenarios, the requirements for the transmission quality, stability and switching efficiency of E1 signal are increasingly stringent.
[0003] The E1 signal switching device existing in the market at present often adopts relatively dispersed structure design, and the integration degree is not high, for example, a device has only one E1 switching board, and needs to be powered separately. If you want to realize large-scale E1 signal switching, you need multiple devices, which leads to large overall volume of the device and occupies more machine room space. In addition, in terms of power supply, because a single device only uses a single power supply, there is no effective power backup mechanism. Once the power supply fails, the entire device will not work normally, which seriously affects the continuity of business. UTILITY MODEL CONTENT
[0004] In order to solve the above problems, the utility model provides an E1 signal switching device to solve the defects that the E1 device is large in size and cannot realize power backup in the prior art.
[0005] According to the first aspect of the utility model, an E1 signal switching device is provided, comprising: a case, a backboard, a power control board and an E1 switching board;
[0006] The case is provided with a plurality of power main control slots, a plurality of service slots and a corresponding number of power input interfaces corresponding to the power main control slots, the power main control slots are used to fix the power control board, and the service slots are used to fix the E1 switching board;
[0007] The backboard is arranged in the case, obtains power through the power input interface, and is provided with a service board interface and a power control board interface, which are used to connect with the power control board and the E1 switching board;
[0008] A plurality of E1 switching boards communicate and exchange data through the data bus and the control bus on the backboard;
[0009] The power control board obtains power through the power output interface connected by the backboard, and supplies power, data transmission and control signal transmission for the plurality of E1 switching boards through the power transmission line, data bus and control bus on the backboard.
[0010] Optionally, the chassis height is 4U, including 8 service slots and 2 power master slots and 2 power input interfaces; the 8 service slots are all horizontally arranged and divided into 2 columns, each column having 4 rows; the 2 power master slots are vertically arranged on the side of the service slots.
[0011] Optionally, the upper part of the service slot and the power master slot is further provided with a heat dissipation slot, the heat dissipation slot is provided with a fan plug-in board, the fan plug-in board is provided with 2 heat dissipation fans, and the power input interface connected by the backboard supplies power to the fan.
[0012] Optionally, the backboard comprises a data interface, a signal conditioning circuit and a switching control circuit.
[0013] The data interface is used to provide a data transmission channel and receive and send E1 signals; the signal conditioning circuit is used to pre-process the input E1 signals; and the switching control circuit is used to realize switching control of E1 signals between different channels according to external instructions.
[0014] Optionally, the power control board comprises a power conversion circuit, a power management chip, a backup switching circuit and a control logic circuit.
[0015] The power conversion circuit is used to convert and stabilize the power input by the backboard, the power management chip is used to distribute and adjust the power of all components connected by the backboard, the backup switching circuit is used to realize hot backup of the power, and the control logic circuit is used to communicate with the outside, receive and execute control instructions from the outside, and monitor and manage the power state.
[0016] Optionally, the E1 switching board comprises an E1 interface circuit, a switching chip, a cache chip and a control logic circuit.
[0017] The E1 interface circuit is responsible for connecting with external E1 lines, receiving and sending E1 signals; the switching chip is used to realize switching of E1 signals between different channels according to control signals; the cache chip is used to temporarily store data during switching to ensure that data is not lost; and the control logic circuit is used to receive switching instructions and control the switching chip.
[0018] Optionally, each E1 switching board is provided with 3 E1 interfaces.
[0019] Optionally, the E1 interface is a D-shaped interface, an RJ45 network cable interface or an optical fiber interface.
[0020] Optionally, the E1 interface rate is 2.048Mbps±50ppm, the interface code type is HDB3 code, and the interface impedance is 75Ω or 120Ω.
[0021] Optionally, the power control board is provided with a power indicator, a restart button and a network management interface.
[0022] The technical scheme of the utility model discloses through the design of high integration, multiple E1 switching boards and multiple power control boards are designed in a case, in the scene of needing large-scale E1 signal switching, can effectively save the machine room space, reduce the overall equipment cost. Meanwhile, because of the existence of multiple power control boards, reliable power backup mechanism can be realized, the stable operation of equipment is guaranteed, the service interruption caused by power failure is reduced, and the reliability of the system is improved. In addition, through the design of board card plug-in, the maintenance work of equipment is greatly simplified, the maintenance cost is reduced, and the maintenance efficiency is improved. Through the network management interface arranged on the power control board, the equipment can realize flexible configuration and management, and the manageability and expandability of the equipment are improved. BRIEF DESCRIPTION OF DRAWINGS
[0023] Figure 1 A front face structure schematic view of the case of the E1 signal switching device is provided in the utility model.
[0024] Figure 2 A back face structure schematic view of the case of the E1 signal switching device is provided in the utility model.
[0025] Figure 3 A top face structure schematic view of the case of the E1 signal switching device is provided in the utility model.
[0026] Figure 4 A front face structure schematic view of the case of the E1 signal switching device after card insertion is provided in the utility model.
[0027] Figure 5 An internal structure schematic view of the case of the E1 signal switching device after card insertion is provided in the utility model.
[0028] LIST OF REFERENCE NUMERALS
[0029] 1, case;2, service slot;3, power main control slot;4, heat dissipation slot;5, power input interface;6, fan;7, fan plugboard;8, E1 switching board;9, power control board;10, E1 interface;11, power indicator;12, restart button;13, network management interface;14, backboard. DETAILED DESCRIPTION
[0030] In order to make the purpose, technical scheme and advantage of the utility model more clear, the utility model embodiment will be described in further detail below in conjunction with the drawings.
[0031] In the description of the utility model, it needs to be understood that the orientation or positional relation indicated by the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like is the orientation or positional relation shown based on the drawings, which is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the device or element indicated must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the utility model.
[0032] In the description of the utility model, it needs to be understood that the terms "installation", "connection", "connection" should be understood broadly unless otherwise specified and limited, for example, it can be fixed connection, can also be detachable connection, or integrally connected, can be mechanical connection, can also be electrical connection, can be directly connected, can also be indirectly connected through an intermediate medium, and can be the communication inside two elements. For ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.
[0033] Referring to Figures 1 to 4 The utility model provides a kind of E1 signal switching device, comprising: case 1, backboard 14, power control board 9 and E1 switching board 8;
[0034] Wherein, case 1 is equipped with multiple power main control slot 3, multiple service slot 2 and the corresponding number of power input interface 5 with power main control slot 3, power main control slot 3 is used to fix power control board 9, and service slot 2 is used to fix E1 switching board 8;
[0035] Referring to Figure 5 Backboard 14 is arranged in case 1, obtains power through power input interface 5, and is equipped with service board interface and power control board interface, for being connected with power control board 9 and E1 switching board 8;
[0036] Multiple E1 switching board 8 can communicate and exchange data through data bus and control bus on backboard 14;
[0037] Power control board 9 obtains power through the power output interface 5 connected by backboard, and carries out power supply, data transmission and control signal transmission for multiple E1 switching board 8 through power transmission line, data bus and control bus on backboard.
[0038] Wherein, the size and height of case 1 can be determined according to the number of service slot 2 and power main control slot 3, for example Figure 4The embodiment shown in the figure includes eight service slots 2, two power master slots 3, and two power input interfaces 5; the eight service slots 2 are horizontally arranged and divided into two columns, each column having four rows; the two power master slots 3 are arranged on the side of the service slots 2 and are vertically arranged, so that the height of the cabinet can be 4U and the size can be 19 inches; in this embodiment, the eight service slots 2 can realize switching of a maximum of 128 E1 signals; in the prior art, an E1 signal switching device of the same size needs at least eight 1U, 19-inch cabinets and has no power backup function; while the embodiment of the present application can reduce the size of the device by 50% and also realize dual-power hot backup.
[0039] As another embodiment, as shown in FIG. 4, a heat dissipation slot 4 can also be arranged above the service slot 2 and the power master slot 3; a board card with heat dissipation function can be inserted into the heat dissipation slot 4, thereby dissipating heat for the internal components of the cabinet to improve the overall stability of the device; for example, a fan plug-in board 7 can be inserted, two or more heat dissipation fans 6 can be arranged on the fan plug-in board 7, and the power input interface 5 connected through the back plate 14 supplies power to the heat dissipation fans 6 thereon; the number of heat dissipation fans 6 can be set as needed, and the power supply of the heat dissipation fans on the fan plug-in board 7 can be realized through the power supply interface on the back plate. Figure 1 3 In the above embodiment, the back plate 14 can include a data interface, a signal conditioning circuit, and a switching control circuit.
[0040] The data interface is used to provide a data transmission channel and receive and send E1 signals; the signal conditioning circuit is used to pre-process the input E1 signals, such as filtering, amplification, etc.; and the switching control circuit is used to realize switching control of E1 signals between different channels according to external instructions.
[0041] The power control board 9 can include a power conversion circuit, a power management chip, a backup switching circuit, and a control logic circuit.
[0042] The power conversion circuit is used to convert and stabilize the power input by the back plate 14 (such as AC 220V or DC-48V); the power management chip is used to distribute and adjust the power supply of all components connected to the back plate 14; the backup switching circuit is used to realize hot backup of the power supply; and the control logic circuit is used to communicate with the outside, receive and execute control instructions from the outside, and monitor and manage the power state.
[0043] The E1 switching board 8 can include an E1 interface circuit, a switching chip, a cache chip, and a control logic circuit.
[0044] The E1 switching board 8 can include an E1 interface circuit, a switching chip, a cache chip, and a control logic circuit.
[0045] The E1 interface circuit is responsible for connecting with the external E1 line, receiving and sending the E1 signal; the switching chip is used for switching the E1 signal between different channels according to the control signal; the cache chip is used for temporarily storing data in the switching process to ensure that the data is not lost; and the control logic circuit is used for receiving the switching instruction and controlling the switching chip to work.
[0046] The specific circuits and chip types in the backboard 14, the power control board 9 and the E1 switching board 8 can be realized by the prior art, and will not be described or exemplified in detail in the present application.
[0047] As a preferred embodiment, as shown in Figure 4 Each E1 switching board 8 can be provided with three E1 interfaces 10, wherein the E1 interface 10 can be a D-shaped interface, or an RJ45 network interface can be considered as an alternative solution for the E1 interface, the RJ45 interface has a wide application basis and good compatibility, and can reduce the interface cost and wiring difficulty; or an optical fiber interface can also be used to improve the transmission distance and quality of the E1 signal by using the high bandwidth, low loss and anti-interference characteristics of the optical fiber.
[0048] As a preferred embodiment, the following selection can be made on other parameters of the E1 interface:
[0049] The E1 interface rate can be selected as 2.048 Mbps ± 50 ppm, which conforms to the international standard G.703 recommendation, and can ensure seamless docking and communication with other devices conforming to the standard.
[0050] The interface code type can use HDB3 code, which is a widely used line coding method in digital communication, and has good anti-interference performance and clock recovery capability, conforming to the G.703 standard.
[0051] The interface impedance can be selected as 75Ω or 120Ω to adapt to different transmission lines and application scenarios, and to ensure effective transmission and matching of the signal.
[0052] The frame structure can be selected as the frame structure conforming to the G.704 and G.706 standards of the International Telecommunication Union ITU, so as to ensure the consistency of the data packaging and transmission format, and facilitate interconnection and intercommunication with other communication devices.
[0053] The jitter characteristic can be selected to meet the jitter characteristic requirements of the G.742 and G.823 standards, so as to ensure that the signal jitter is within an acceptable range during transmission, and to improve the quality and stability of the signal.
[0054] In addition, in order to facilitate the viewing of the device status and the control of the device, as shown in Figure 4As shown, the power supply control board 9 can be provided with a power supply indicator 11, a restart button 12 and a network management interface 13.
[0055] The power supply indicator 11 is used to display the working state of the power supply, the restart button 12 is used to perform power-off and restart operation on the device, and the network management interface 13 is connected with the control logic circuit in the power supply control board 9 and used to receive and transmit external control signals.
[0056] It should be noted that not all steps and modules in the above processes and system structure diagrams are necessary, and some steps or modules can be ignored according to actual needs. The execution order of each step is not fixed and can be adjusted as needed. The system structure described in the above embodiments can be a physical structure or a logical structure, that is, some modules can be implemented by the same physical entity, or some modules can be implemented by multiple physical entities, or can be implemented by some components in multiple independent devices together.
[0057] In the above embodiments, the hardware modules can be implemented by mechanical or electrical means. The utility model has been described in detail through the drawings and preferred embodiments above, however, the utility model is not limited to these disclosed embodiments, and those skilled in the art can know that the utility model can obtain more embodiments by combining the code review means in the above different embodiments, and these embodiments are also within the protection scope of the utility model.
Claims
1. An E1 signal switching device, characterized by comprising: The application relates to a cabinet, a backboard, a power control board and an E1 switching board. The cabinet is provided with a plurality of power master control slots, a plurality of service slots and a corresponding number of power input interfaces corresponding to the power master control slots, the power master control slots are used for fixing the power control board, and the service slots are used for fixing the E1 switching board. The backboard is arranged in the cabinet, obtains power through the power input interfaces, is provided with a service board interface and a power control board interface and is used for being connected with the power control board and the E1 switching board. The E1 switching boards are communicated and data-exchanged through the data bus and the control bus on the backboard. The power control board obtains power through the power output interfaces connected with the backboard, and supplies power, transmits data and transmits control signals for the E1 switching boards through the power transmission lines, the data bus and the control bus on the backboard. The backboard comprises a data interface, a signal conditioning circuit and a switching control circuit. The data interface is used for providing a data transmission channel, receiving and sending E1 signals; the signal conditioning circuit is used for pre-processing the input E1 signals; and the switching control circuit is used for realizing switching control of the E1 signals between different channels according to external instructions. The power control board comprises a power conversion circuit, a power management chip, a backup switching circuit and a control logic circuit. The power conversion circuit is used for converting and stabilizing the power input by the backboard; the power management chip is used for distributing and adjusting the power of all components connected with the backboard; the backup switching circuit is used for realizing hot backup of the power; and the control logic circuit is used for communicating with the outside, receiving and executing control instructions from the outside, monitoring and managing the power state. The E1 switching board comprises an E1 interface circuit, a switching chip, a cache chip and a control logic circuit. The E1 interface circuit is responsible for connecting with external E1 lines, receiving and sending E1 signals; the switching chip is used for realizing switching of the E1 signals between different channels according to control signals; the cache chip is used for temporarily storing data in the switching process, so as to ensure that the data is not lost; and the control logic circuit is used for receiving switching instructions and controlling the switching chip. The cabinet is 4U high, comprises eight service slots, two power master control slots and two power input interfaces; the eight service slots are horizontally arranged and divided into two columns with four rows in each column; and the two power master control slots are vertically arranged on the sides of the service slots.
2. The E1 signal switching device according to claim 1, characterized in that, A heat dissipation slot is further arranged above the service slots and the power master control slots, a fan plug-in board is arranged in the heat dissipation slot, two heat dissipation fans are arranged on the fan plug-in board and the fans are powered through the power input interfaces connected with the backboard.
3. The E1 signal switching device according to claim 1, wherein Three E1 interfaces are arranged on each E1 switching board.
4. The E1 signal switching device according to claim 1, characterized by The E1 interfaces are D-shaped interfaces, RJ45 network cable interfaces or optical fiber interfaces.
5. The E1 signal switching device according to claim 4, characterized by The E1 interfaces have a rate of 2.048 Mbps+ / -50ppm, an interface code type of HDB3 code and an interface impedance of 75 omega or 120 omega.
6. The E1 signal switching device according to claim 4, wherein 7. The E1 signal switching device according to claim 1, wherein The power control board is provided with a power indicator, a restart button and a network management interface. The power control board is provided with a power indicator, a restart button and a network management interface.