CN215379125U - Standardized cable digital television monitoring front-end equipment - Google Patents

Abstract

The utility model discloses a standardized cable digital television monitoring front-end device, which comprises: the device comprises a shell, a first panel, a second panel and a fastening device; the first panel is mounted on the shell through the fastening device; the second panel is arranged on the shell and is opposite to the first panel; the inner wall of the shell is provided with a guide rail; the back plate is arranged in the inner cavity of the shell and is positioned between the first panel and the second panel through the guide rail; one end of the functional board card is arranged in the clamping groove on the shell through the pulling aid, and the other end of the functional board card is arranged on the back plate through the pinhole connector; the utility model does not need to detach the case cover, thereby saving the replacement time.

Description

Standardized cable digital television monitoring front-end equipment

Technical Field

The application relates to the technical field of monitoring, in particular to a standardized cable digital television monitoring front-end device.

Background

The cable digital television monitoring station is installed in cable television broadcasting units in the nationwide level and above cities, can monitor the end user signals transmitted by the broadcasting units, and has the capabilities of code stream analysis, code stream descrambling and decoding, code stream transcoding, code stream recording, standard definition video and audio content monitoring, high definition video and audio content monitoring, Service Information (SI) acquisition and the like. The cable digital television monitoring front-end equipment provides important technical support for the cable television safe broadcasting and content supervision work in China.

Replacing a board card from a conventional industrial PC system requires the user to loosen and remove the chassis cover, which takes a considerable amount of time.

SUMMERY OF THE UTILITY MODEL

Objects of the utility model

The utility model aims to provide the standard cable digital television monitoring front-end equipment, which does not need to detach a case cover and saves the replacement time.

(II) technical scheme

To solve the above problems, a first aspect of the present invention provides a standardized cable digital tv monitoring front-end device, comprising: the device comprises a shell, a first panel, a second panel and a fastening device; the first panel is mounted on the shell through the fastening device; the second panel is arranged on the shell and is opposite to the first panel; the inner wall of the shell is provided with a guide rail; the back plate is arranged in the inner cavity of the shell through the guide rail and is positioned between the first panel and the second panel; one end of the functional board card is arranged in the clamping groove on the shell through the pulling aid, and the other end of the functional board card is arranged on the back plate through the pinhole connector.

Preferably, the function board card includes an exchange board card, a monitoring board card, a master control board card, a demodulation board card and a transcoding board card, the exchange board card is provided with a network interface, and the exchange board card is connected with a service board card installed on the back plate except the exchange board card through the network interface.

Preferably, the backplane is provided with a first slot for inserting the master control board card, the demodulation board card and the transcoding board card, a second slot for inserting the monitoring board card and a third slot for inserting the switching board card.

Preferably, the backplane comprises a first backplane and a second backplane, and the first backplane is connected with the second backplane through the switch board card; the first back plate is arranged close to the first panel; the second back plate is arranged close to the second panel; a heat dissipation channel is formed between the first back plate and the second back plate.

Preferably, the switch board card includes a first switch board card installed on the first backplane and a second switch board card installed on the second backplane; network interfaces are arranged on the first exchange board card and the second exchange board card; the first exchange board card is connected with the second exchange board card through the network interface so as to realize the connection of the first backboard and the second backboard.

Preferably, the master control board card is connected with a cable television monitoring center platform and is used for data interaction with the cable television monitoring center platform; the main control board card comprises a third panel, a shielding barrier strip, a circuit board, a CPCI adapter and two pull-out aids; the shielding barrier strip is arranged on one side of the periphery of the panel, and the circuit board is arranged on the third panel; the CPCI adapter is arranged on one side of the circuit board, which is far away from the third panel; the two pull-out aids are arranged at two opposite ends of the third panel, and the main control board card is detachably arranged on the clamping groove through the two pull-out aids; the main control board card also comprises a reset key, a power indicator, a status indicator, a network port, an audio/video port and a data port, wherein the reset key, the power indicator, the status indicator, the network port, the audio/video port and the data port are arranged on the surface of the third panel, which is far away from the circuit board; the reset key, the power indicator light, the status indicator light, the network port, the audio/video port and the data port are electrically connected with the circuit board through the third panel.

Preferably, the demodulation board card and the transcoding board card are connected with the exchange board card through the network interface.

Preferably, the monitoring board card is connected with the exchange board card through the network interface; the monitoring board card comprises a circuit board, a CPCI adapter, a fourth panel and two pull-out aids, wherein the CPCI adapter is arranged on the circuit board, and the monitoring board card transmits data through the CPCI adapter; the fourth panel is positioned at one end of the base material board of the circuit board, which is opposite to the CPCI adapter; the pulling-out aids are arranged at two opposite ends of the fourth panel, and the monitoring board card is detachably arranged on the clamping groove through the pulling-out aids; the monitoring board card also comprises a power indicator light, a status indicator light, a reset key and a debugging port; the power indicator lamp is arranged on the surface, away from the circuit board, of the fourth panel and used for displaying the power state of the monitoring board card; the status indicator lamp is arranged on the surface, away from the circuit board, of the fourth panel and used for displaying the working status of the monitoring board card; the reset key is arranged on the surface of the fourth panel, which is far away from the circuit board, and the reset key is used for resetting the working state of the monitoring board card; the debugging port is arranged on the fourth panel, and the external equipment is used for debugging the monitoring board card through the debugging port.

Preferably, a touch screen is arranged on the first panel, and the touch screen is connected with the monitoring board card and is used for displaying the running state of each service board card monitored by the monitoring board card.

Preferably, the heat dissipation device further comprises a first temperature sensor and a second temperature sensor which are positioned in the heat dissipation channel; the first temperature sensor and the second temperature sensor are both connected with the monitoring board card; the first temperature sensor is arranged on the first back plate; the second temperature sensor is disposed on the second back plate.

Preferably, the touch screen further comprises a redundant power supply module, the input end of the redundant power supply module is used for connecting two external power supplies, and the output end of the redundant power supply module is respectively connected with the back plate and the touch screen.

Preferably, the redundant power supply module includes a plurality of power conversion modules CSUs 550, each of the CSUs 550 is integrally disposed, and the output power of each of the CSUs 550 is equal.

Preferably, the fan module is arranged at the bottom of the inner cavity of the shell, is positioned below the heat dissipation channel and is connected with the redundant power supply module; the fan module comprises a fan disc, a handle for plugging and unplugging the fan disc and a plurality of fans; the handle is fixedly arranged on the fan disc; the fan disc is connected with the shell through a release screw so as to realize that the fan module is drawn on the shell; the fans are all arranged on the fan disc and are interconnected with the power supply socket and the signal socket through the collision connectors; the power supply socket is arranged on the second panel, and a switch key is further arranged on the second panel.

Preferably, the fan module further comprises a dustproof device arranged below the fan module, and the dustproof device is arranged on the shell through a groove arranged on the shell; the dustproof device comprises a dustproof drawing plate and a dustproof assembly, wherein the dustproof assembly is fixedly installed on the dustproof drawing plate, and sliding blocks matched with the grooves are formed on two sides of the dustproof drawing plate.

Preferably, the dustproof assembly comprises a first combined plate, a second combined plate and a dustproof net; the dust screen sets up first compoboard with between the second compoboard, first compoboard pass through the screw with second compoboard fixed connection.

Preferably, the fastening device is a pulling aid or a buckle; the shell is also provided with a slot position identification code used for identifying the slot position corresponding to each functional plug-in card.

(III) advantageous effects

The technical scheme of the utility model has the following beneficial technical effects:

the first panel is arranged on the shell through the fastening device, so that the first panel and the shell can be disassembled and assembled, and further, when the board card is replaced, the case cover does not need to be disassembled, so that the replacement time is saved, the board card is simple to replace, and the replacement time is saved.

The back plate is arranged in the inner cavity of the shell through the guide rail, so that the back plate is firmly fixed in the shell, meanwhile, one end of the functional board card is fixedly arranged in a clamping groove on the shell through the pull-out aid, and the other end of the functional board card is arranged on the back plate through the pinhole connector; the back plate and the functional board are firmly fixed on the positions of the four surfaces of the back plate and the functional board, so that the back plate and the functional board can be connected durably without poor contact even in severe impact and vibration occasions. The function board card and the backboard are connected by the pin hole connector, so that the utility model abandons the gold finger type interconnection mode of the traditional card, has air tightness and corrosion resistance, further improves the reliability and increases the load capacity.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a system composition diagram of the present invention;

FIG. 3 is a diagram of the backplane system interconnection of the present invention;

FIG. 4 is a front view of a first panel of the present invention;

FIG. 5 is a front view of a second panel of the present invention;

FIG. 6 is a front view of a first backplane of the present invention;

FIG. 7 is a front view of a second back plate of the present invention;

FIG. 8 is a schematic cross-sectional view of a first panel of the present invention;

FIG. 9 is a schematic view of a fan module according to the present invention;

FIG. 10 is a plan view of the fan module of the present invention;

FIG. 11 is an electrical diagram of a fan module according to the present invention;

FIG. 12 is an exploded view of the dust guard of the present invention;

fig. 13 is a schematic structural diagram of the main control board card of the present invention;

fig. 14 is a working schematic block diagram of the main control board card of the present invention;

FIG. 15 is a front view of the master control board of the present invention;

FIG. 16 is a top view of a panel of the present invention;

FIG. 17 is a top view of the master control board of the present invention;

fig. 18 is a schematic structural diagram of the monitoring board card of the present invention;

FIG. 19 is a block diagram of the working principle of the monitoring board card of the present invention;

FIG. 20 is a schematic front view of the monitor board of the present invention;

FIG. 21 is a schematic top view of the monitor board of the present invention;

fig. 22 is a schematic structural diagram of the demodulation board card of the present invention;

fig. 23 is a working schematic block diagram of the demodulation board card of the present invention;

fig. 24 is a schematic front view of the demodulator card of the present invention;

fig. 25 is a schematic top view of the demodulator card of the present invention;

fig. 26 is a schematic structural diagram of a transcoding board card according to the present invention;

fig. 27 is a functional block diagram of a transcoding board of the present invention;

fig. 28 is a schematic front view of a transcoding board of the present invention;

fig. 29 is a schematic top view of a transcoding board of the present invention.

Reference numerals:

the multifunctional portable electronic device comprises a shell 1, a first panel 2, a second panel 3, a monitoring board 4, a first back plate 5, a first exchange board 6, a touch screen 7, a redundant power module 8, a fan module 9, a fan disc 91, a handle 92, a fan 93, a dustproof drawing plate 10, a first combination plate 11, a second back plate 12, a second combination plate 13, a first temperature sensor 14, a second temperature sensor 15 and a second exchange board 16.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in further detail with reference to the accompanying drawings in conjunction with the following detailed description. It should be understood that the description is intended to be exemplary only, and is not intended to limit the scope of the present invention. Moreover, in the following description, descriptions of well-known structures and techniques are omitted so as to not unnecessarily obscure the concepts of the present invention.

In the description of the present invention, it should be noted that the terms "first", "second", and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

As shown in fig. 1 to 12, in an embodiment of the present invention, the present invention provides a standardized cable digital television monitoring front end device, including a housing 1, a first panel 2, a second panel 3, a fastening device; the first panel 2 is mounted on the housing 1 by fastening means; the second panel 3 is arranged on the shell 1 and is opposite to the first panel 2; the inner wall of the shell 1 is provided with a guide rail for fixing the board card. The utility model also comprises a back plate positioned in the inner cavity of the shell 1, a plurality of functional board cards and a pulling aid arranged on the functional board cards, wherein the back plate is arranged in the inner cavity of the shell 1 through a guide rail and positioned between the first panel 2 and the second panel 3; one end of the functional board card is arranged in a clamping groove on the shell 1 through the pulling-assistant device, and the other end of the functional board card is arranged on the back board through the pinhole connector.

The first panel 2 is arranged on the shell 1 through the fastening device, so that the first panel 2 and the shell 1 can be disassembled and assembled, and further, when the board card is replaced, a case cover does not need to be disassembled, so that the replacement time is saved, the board card is simple to replace, and the replacement time is saved.

In the embodiment of the present invention, the fastening device is a pull-out aid, but of course, in other embodiments, the fastening device may be a snap. One end of the pulling aid is fixedly arranged on the first panel 2, and the other end of the pulling aid is clamped in a groove on the inner wall or the outer wall of the shell 1; in other embodiments, the other end of the extraction aid can also be clamped with a projection on the inner wall or the outer wall of the shell 1, so that the first panel 2 and the shell 1 can be more simply and quickly disassembled, and the production cost can be saved.

The back plate is arranged in the inner cavity of the shell 1 through the guide rail, so that the back plate is firmly fixed in the shell 1, meanwhile, one end of the functional board card is fixedly arranged in a clamping groove on the shell 1 through the pull-out aid, and the other end of the functional board card is arranged on the back plate through the pinhole connector; the back plate and the functional board are firmly fixed on the positions of the four surfaces of the back plate and the functional board, so that the back plate and the functional board can be connected durably without poor contact even in severe impact and vibration occasions. The function board card and the backboard are connected by the pin hole connector, so that the utility model abandons the gold finger type interconnection mode of the traditional card, has air tightness and corrosion resistance, further improves the reliability and increases the load capacity. In the embodiment, the pin hole connector is 2mm in density.

In the present embodiment, the back plate is mounted in the inner cavity of the housing 1 by means of guide rails: the guide rail is equivalent to a fixing device, and the guide rail can be structures such as inserting groove, spout, if be inserting groove, can set up the plug connector that corresponds with inserting groove on the backplate, through fixing the plug connector in inserting groove, realizes fixing the backplate in casing 1. If the sliding groove is provided, the back plate slides into the housing 1 along the sliding groove, so that the back plate can be fixed in the housing 1.

The functional board card is fixedly arranged in a clamping groove on the shell 1 through the pulling aid: the clamping groove is equivalent to a fixing device, the clamping groove can be of structures such as an inserting groove, a sliding rail and the like, if the clamping groove is the inserting groove, the function board card can be provided with a pulling assisting device corresponding to the inserting groove, and the function board card is fixed in the shell 1 by fixing the pulling assisting device in the inserting groove. If the functional board card is a sliding rail or a sliding groove, the functional board card slides into the housing 1 along the sliding rail or the sliding groove, so that the functional board card can be fixed in the housing 1.

As shown in fig. 2 and fig. 3, in the embodiment of the present invention, the function boards include a switch board, a monitor board 4, a main control board, a demodulation board, and a transcoding board, the switch board is provided with a network interface, and the switch board is connected to a service board installed on the backplane, except for the switch board, through the network interface, so as to implement information exchange between the boards.

As shown in fig. 2, in the embodiment of the present invention, in order to prevent the occurrence of the board insertion error, the backplane of the present invention is provided with a first type slot for inserting the main control board, the demodulation board, and the transcoding board, a second type slot for inserting the monitoring board 4, and a third type slot for inserting the switch board. In the embodiment, in order to meet the requirements of quick transmission and quick processing of mass data of each board card borne by a machine frame, the expansibility is facilitated, and the usability is improved, the back plate of the chassis adopts a uniform CPCI connector as an electrical interface, so that the durability, the shock resistance and the ventilation of the chassis are improved.

As shown in fig. 2, 6 and 7, in the embodiment of the present invention, the backplane includes a first backplane 5 and a second backplane 12, and the first backplane 5 is connected to the second backplane 12 through a switch board; the first back plate 5 is arranged close to the first face plate 2; the second back plate 12 is disposed adjacent to the second panel 3; a heat dissipation channel 7 is formed between the first back plate 5 and the second back plate 12. As an alternative embodiment, the back sheet of the present invention is divided into two sides of the first back sheet 5 and the second back sheet 12. The parts of the first back sheet 5 and the second back sheet 12 that need to be interconnected mainly have two parts: the first part is network interconnection, that is, the first backplane 5 and the second backplane 12 are interconnected by the way of aggregation of network interfaces of switching board cards through the first backplane 5 and 4 RJ45 network interfaces on the back of the bus backplane of the second backplane 12: the network cascade connection of the first backboard 5 and the second backboard 12 can be realized, and the communication bandwidth of the network cascade connection of the first backboard 5 and the second backboard 12 can be increased. The power supply interconnection realizes the power supply sharing of the first back plate 5 and the second back plate 12 and the current sharing work of 4 groups of power cards through a special cascade cable. The utility model aims to reduce the length of connecting wires, reduce current loss, keep the interior of a case clean and tidy, and realize one-to-one correspondence of current-sharing matching, power supply convergence and network port connection modes. In this embodiment, the distance between the RJ45 network interfaces is uniform, so as to ensure the consistency of the internal and network bandwidths of the chassis in each batch.

As shown in fig. 2 and 3, in the embodiment of the present invention, the switch boards include a first switch board 6 mounted on the first backplane 5 and a second switch board 16 mounted on the second backplane 12; the first switching board card 6 and the second switching board card 16 are both provided with network interfaces; the first switch board 6 is connected to the second switch board 16 through a network interface, so as to implement the connection between the first backplane 5 and the second backplane 12. In this embodiment, the network interface of the switch board is fixed, and 5 connectors are provided between the slots on the first backplane 5 and the second backplane 12, so that the purpose of setting is to realize the shortest routing distance from the network to each service slot and reduce communication delay.

The exchange board card is an embedded device which completes IP network interaction and realizes network data interaction among a demodulation board card, a transcoding board card, a main control board card and a monitoring board card 4. The exchange board card is the neural center of the utility model, and builds a data bridge with other service board cards of the utility model, thereby ensuring stable data interaction and smooth network of various service board cards. In order to realize the interaction of data inside a machine frame and the requirement of external test and communication, a 48-port high-density integration is designed on a switching board card, the front and back outgoing lines of a network interface are supported, a 42-network interface is designed on a back board and is provided for data exchange among all board cards inside a shell 1 through a CPCI connector, and a 6-network interface is designed on a first panel 2 and is used for connection of a test and a central platform. The exchange board card is designed to be arranged in the shell 1, so that the intelligent miniaturization design is realized. Meanwhile, in combination with the requirement of a service background, in order to be completely applied to a cable television monitoring environment, functions such as port VLAN, port aggregation, port mirroring, multicast interception (IGMPsnooping) and the like are customized according with service functions.

As shown in fig. 13 to 17, in the embodiment of the present invention, in order to perform data interaction with the cable television monitoring center platform, the main control board is connected with the cable television monitoring center platform.

The main control board card is a main communication and equipment management module in the board card equipment, mainly operates a terminal management software system for monitoring the front-end equipment and is responsible for managing other modules, communicates with an upper-layer platform, responds to a central system software remote instruction, and completes the functions of monitoring front-end data acquisition and data return.

In the process of implementing the main control board card based on the related art, the board card 63 in the related art lacks effective shielding on external electromagnetic interference, so that the practicability of the board card equipment is poor, and the use experience of a user is influenced.

In view of the above technical problems, as shown in fig. 13 to 16, the main control board includes a panel and a shielding bar, the shielding bar is disposed on one side of the periphery of the panel, and the shielding bar is used for shielding electromagnetic interference of an external signal to a circuit board of the main control board. The shielding blend stop sets up in panel week side to carry out effectual electromagnetic shield to the electronic components who sets up in the circuit board, can show the anti-electromagnetic interference ability that promotes the board card equipment, and then guarantee the normal work of each part in the board card equipment.

The thickness of the shielding barrier strip can be 2.5mm, and under the thickness dimension, the shielding barrier strip can save the production cost under the condition of ensuring effective electromagnetic protection.

The number of shielding blend stops can be two, and two shielding blend stops set up in the panel periphery relatively. The panel can be rectangle, and the length direction of shielding blend stop extends along the panel, and the length dimension of shielding blend stop is the same with the length dimension of panel. It should be noted that the panel, when rectangular, includes a front surface, a back surface and four adjoining side surfaces, and the periphery of the panel may be understood as being formed by four adjoining side plates, wherein two shielding bars are disposed on two opposite side surfaces.

In the embodiment of the utility model, the two shielding barrier strips are oppositely arranged on the periphery of the panel, so that the electromagnetic protection can be effectively carried out on the electric components in the main control board card, and the normal work of the main control board card is ensured.

The main control board card further comprises a circuit board and a CPCI adapter, the circuit board comprises a substrate board, a control chip, a first network card and a second network card, the substrate board is connected with the panel, the control chip, the first network card, the second network card and the CPCI adapter are arranged on the substrate board, the control chip is connected with the CPCI adapter through the first network card, the control chip is connected with the CPCI adapter through the second network card, when the main control board card is installed in the clamping groove of the case, the CPCI adapter is electrically connected with the slots in the clamping groove, so that the control chip receives monitoring instructions of the monitoring system through the first network card, and generates control instructions according to the monitoring instructions and sends the control instructions through the second network card.

The CPCI adapter has the advantages of hot plug, high openness, high reliability and the like, and meanwhile, the CPCI adapter has higher bandwidth and can realize high-speed data communication. Compared with the traditional design, the master control board card designed by the CPCI adapter has higher durability and shock resistance.

In the embodiment of the utility model, the main control board card is electrically connected with the slots in the back panel card slot through the CPCI adapter, so that the control chip receives the monitoring instruction of the monitoring system through the first network card, generates the control instruction according to the monitoring instruction and issues the control instruction through the second network card. Therefore, the main control board card of the utility model has fast data transmission and can meet the requirement of big data communication.

In the embodiment of the present invention, as shown in fig. 17, the main control board card further includes two pull-out aids. The two pull-out assisters are arranged at two opposite ends of the third panel, and the monitoring board card is detachably arranged in the clamping groove through the two pull-out assisters.

In the embodiment of the utility model, two pull-out aids are arranged at two opposite ends of the panel, so that a user can conveniently detach the main control board card.

Similarly, in other embodiments, the main control board further includes a reset key, a power indicator, a status indicator, a network port, an audio/video port, and a data port, which are disposed on a surface of the third panel away from the circuit board, and the reset key, the power indicator, the status indicator, the network port, the audio/video port, and the data port are electrically connected to the circuit board through the panel.

The reset key is used for resetting the main control board card, the power indicator lamp is used for displaying the shop state of the board card, the status indicator lamp is used for displaying the working state of the board card, the network port is used for data transmission and debugging of the board card, the audio and video port is used for system output of the main control board card, and the data port is used for connection of external equipment of the main control board card.

The third panel may be rectangular, the length dimension of the third panel being based on a standard 6U design (44.45 mm for 1U and 266.7mm for 6U), with two pull aids being provided at opposite ends of the panel in the length direction. The power indicator and the status indicator are arranged along the direction perpendicular to the length direction, the reset key, the network port, the audio/video port and the data port are arranged along the length direction, and the power indicator and the status indicator are positioned between the reset key and the network port along the length direction.

Specifically, the network port is 32.5mm long and 14mm wide, and the data port is 13.4mm long and 6.0mm wide.

In the embodiment of the present invention, optionally, the number of the data ports is two, the two data ports are arranged along the length direction of the panel, and the two data ports are arranged at a distance of 8 mm.

The data port set by the specification is convenient to pull and plug, and the problem of mutual interference between the data ports in the use process is avoided.

Specifically, the board card 63 of the embodiment of the present application has the following features:

1. adopting 6 generation U series Intel MobileCPU design; 2. the method comprises the steps of supporting a double-channel DDR4-DIMM memory, maximally supporting 16G, 3, supporting 1 high-speed M.2-SSD solid state disk interface, 4, supporting 1 high-speed SATA-SSD solid state disk interface, 5, supporting CPCI connection of a double Ethernet interface, 6, supporting panel RJ45 connection of the double Ethernet interface, 7, supporting an HDMI system output interface, 8, supporting double USB2.0 interfaces, 9, supporting running of a standard Windows embedded operating system, and 10, supporting running of a standard linux embedded operating system.

As shown in fig. 22 to 25, in the embodiment of the present invention, the demodulation board card is connected to the switch board card through the network interface; in this embodiment, the demodulation board card is mainly responsible for a module for performing channel demodulation, channel detection, channel analysis, and data content descrambling on an RF signal modulated by QAM based on DVB-C, and the demodulation card can respond to a command requirement of a main control card of a supervisory front-end device in real time, and perform functions of multi-channel demodulation, descrambling, and channel detection and analysis in real time.

In the embodiment of the present invention, the demodulation board card adopts a CPCI structure design of a standard 6U, and product schematic diagrams of a 4-way DVB-C demodulation descrambling module daughter board are shown in fig. 23 to 25.

In the embodiment of the present invention, the demodulation board card adopts a 6U standard CPCI structural design, the panel thereof adopts an upper and lower dual-puller structural design, the panel interface layout and the detailed layout size of the four-way DVB-C demodulation descrambling board card are shown in fig. 23 to 25, and the panel interface layout of the four-way DVB-C demodulation descrambling board card is specifically shown in fig. 24.

In the embodiment of the utility model, the demodulation board card comprises a board card unplugging assistor, a board card information two-dimensional code and a board card reset key: resetting the board card, and powering the board card to indicate the lamp: display board power-on state, board state indicator: displaying the working state of the board card and debugging the serial port of the board card: debugging the board card through a serial port, and inputting the board card by RF: receiving QAM modulation DVB-C signal input and a card CAM card slot: and the four independent PCMCIA card slots support four independent CAM large cards to descramble.

In an embodiment of the present invention, the demodulation board card supports the following functions: the system supports CPCI connection of dual Ethernet interfaces, supports arbitrary flexible deployment of data and management of the dual Ethernet interfaces, conforms to DVB-C demodulation standard (EN50221), supports 1 radio frequency RF input interface, supports 4 frequency points RF simultaneous and independent demodulation, supports 16/32/64/128/256QAM demodulation mode, supports 4 independent PCMCIACAM card slots, supports four independent CAM cards to run simultaneously, supports multiple CAM large cards such as perpetual motion video, calculator, digital video, kanis, Ididel, and Viaccess, supports Single Program (SPTS) or multi-program (MPTS) output, supports the automatic detection and automatic reply functions of losing lock, supports independent reset of the board card, and supports 1 panel debugging serial port.

As shown in fig. 26-29, in an embodiment of the present invention, the transcoding board is connected to the switch board via a network interface; the transcoding board card is mainly responsible for monitoring, analyzing and re-transcoding the audio and video program contents, can respond to the instruction requirement of a main control card of the front-end equipment in real time, and can perform re-transcoding, content detection and content analysis on the multi-channel audio and video high-definition program contents in real time to complete the functions of audio and video program content monitoring and audio and video program content acquisition, return and real-time video recording.

In the embodiment of the utility model, the transcoding board card adopts a CPCI structural design of standard 6U. The schematic diagram of the product is shown in fig. 26. The production schematic block diagram of the DVB monitoring transcoding module daughter board is shown in figures 26 to 27. The panel interface layout of the transcoding card is specifically shown in fig. 28 to 29.

In the embodiment of the utility model, the transcoding board card comprises the following modules: the board card pulling aid, the board card information two-dimensional code and the board card reset key: resetting the board card, and powering the board card to indicate the lamp: display board power-on state, board state indicator: displaying the working state of the board card and debugging the serial port of the board card: test and debug for board card

In the embodiment of the present invention, the functional characteristics of the transcoding board card include: the system adopts a data routing link taking an FPGA as a center, CPCI connection supporting dual Ethernet interfaces, data and management supporting the dual Ethernet interfaces to be flexibly deployed, panel RJ45 connection supporting 1 Ethernet interface, panel RJ45 deployable debugging interface and data monitoring interface, 4 independent multi-channel high-performance transcoding modules, 8-channel H.264 high-definition or 24-channel H.264 standard definition transcoding maximally, and mpeg2 and H264 high-standard definition audio and video transcoding simultaneously.

As shown in fig. 18 to 21, in the embodiment of the present invention, the monitoring board 4 is connected to the switch board via a network interface, so as to exchange information between the monitoring board 4 and the switch board. In this embodiment, the position of the monitoring board 4 is fixed and is located in the leftmost slot 1 of the first backplane 5 in fig. 6, so that the purpose of routing monitoring signals such as power supplies and fans can be achieved at the shortest distance, and the detection precision is improved.

As shown in fig. 18 to 21, in order to solve the technical problem that the monitoring board 4 lacks effective monitoring of the temperature of the board card equipment chassis, which results in poor practicability of the board card equipment, the monitoring board 4 of the present invention includes a circuit board and a CPCI adapter. The CPCI adapter is arranged on the circuit board, and the monitoring board card transmits data through the CPCI adapter.

The circuit board comprises a substrate board, a temperature acquisition circuit, a first control chip, a second control chip and a temperature regulation circuit. The temperature acquisition circuit is arranged on the substrate board and used for acquiring the temperature of the case. The first control chip is arranged on the substrate board and connected with the temperature acquisition circuit, and the first control chip is used for carrying out data analysis on temperature data acquired by the temperature acquisition circuit. The second control chip is arranged on the substrate board and connected with the first control chip, and the second control chip is used for generating a temperature control instruction according to an analysis result of the first controller. The temperature adjusting circuit is arranged on the substrate board and connected with the second control chip, and the temperature adjusting circuit is used for responding to a temperature control instruction to adjust the temperature of the case.

In the embodiment of the utility model, the monitoring board card is provided with the temperature acquisition circuit, the temperature regulation circuit, the first control chip and the second control chip to realize dynamic regulation of the case temperature of the board card equipment, so that the case temperature is favorably reduced, normal work of the board card in the case is ensured, and the practicability and the user experience of the board card equipment are improved.

In the embodiment of the utility model, the monitoring board card further comprises a rotating speed acquisition circuit and a rotating speed adjusting circuit. The rotating speed acquisition circuit is arranged on the base material plate and connected with the first control chip, and the rotating speed acquisition circuit is used for acquiring rotating speed data of the fan of the case. The rotating speed adjusting circuit is arranged on the base material plate and connected with the second control chip. The first control chip is used for carrying out data analysis on the rotating speed data of the fan, which are acquired by the rotating speed acquisition circuit, the second control chip generates a rotating speed control signal according to the analysis result of the rotating speed data, and the rotating speed adjusting circuit responds to the rotating speed control signal to adjust the rotating speed of the fan.

In the embodiment of the utility model, the monitoring board card is provided with the rotating speed acquisition circuit, the rotating speed adjusting circuit, the first control chip and the second control chip so as to dynamically adjust the rotating speed of the fan in the case of the board card equipment, so that the temperature of the case is favorably reduced, the normal work of the board card in the case is ensured, and the practicability and the user experience of the board card equipment are improved.

The rotating speed acquisition circuits and the rotating speed adjusting circuits can be multiple, the rotating speed acquisition circuits are connected with the first control chip, and the rotating speed adjusting circuits are connected with the second control chip.

In the embodiment of the utility model, the rotating speed acquisition circuits and the rotating speed adjusting circuits in a plurality of numbers can obviously improve the cooling effect on the case, and are beneficial to quickly cooling the case.

In the embodiment of the utility model, the monitoring board card further comprises an interface conversion module, and the interface conversion module is arranged on the substrate board. The temperature acquisition circuit is connected with the first control chip through the interface conversion module, and the rotating speed acquisition circuit is connected with the first control chip through the interface conversion module; the interface conversion module is used for carrying out analog-to-digital conversion on the temperature signal acquired by the temperature acquisition circuit and the rotating speed signal acquired by the rotating speed acquisition circuit.

In the embodiment of the present invention, the monitoring board 4 further includes a linear regulator and a dial switch. The linear voltage stabilizer is arranged on the substrate board and is respectively connected with the first control chip and the second control chip. The dial switch is arranged on the base material plate and connected with the first control chip; the monitoring board card 4 identifies different board cards in the case through the dial switch, and utilizes the linear voltage stabilizer to regulate the voltage of the identified board cards.

In the embodiment of the utility model, the monitoring board card 4 dynamically adjusts the voltage of different board cards in the board card equipment chassis through the linear voltage stabilizer and the dial switch, so that the effective work of each board card is ensured, and the service life of the board card equipment is prolonged.

Also, in some embodiments, the monitor card 4 further includes a voltage and current monitoring circuit and a power supply chip. The voltage and current monitoring circuit is arranged on the substrate board and connected with the second control chip. The power supply chip is arranged on the substrate board and connected with the voltage and current detection circuit; and the second control chip monitors the voltage and the current of the power supply of the case through the voltage and current monitoring circuit.

Based on the embodiment of the application, the power supply of the board card equipment case can simultaneously carry out corresponding conversion on the signals of voltage and current through the voltage and current monitoring circuit, and the second control chip carries out reliable dynamic monitoring.

In the embodiment of the present invention, the monitoring board 4 further includes a fourth panel and two unplugging aids. The fourth panel is located at an end of the substrate board opposite the CPCI adapter. The two pull-out assisters are arranged at two opposite ends of the fourth panel, and the monitoring board card 4 is detachably arranged in the clamping groove on the shell 1 through the two pull-out assisters.

The monitoring board 4 further comprises a power indicator light, a status indicator light and a reset key. The power indicator lamp is arranged on the surface, deviating from the circuit board, of the fourth panel and used for displaying the power state of the monitoring board card 4. The status indicator lamp is arranged on the surface of the fourth panel, which is away from the circuit board, and the status indicator lamp is used for displaying the working status of the monitoring board card 4. The reset key is arranged on the surface of the fourth panel, which is away from the circuit board, and the reset key is used for resetting the working state of the monitoring board card 4.

In some of these embodiments, the fourth panel is rectangular and the length dimension of the fourth panel is based on a standard 6U design. Two help and pull out the ware and be located panel length direction relative both ends, power indicator and status indicator arrange along perpendicular to length direction, and power indicator central axis apart from the central axis of status indicator 5.08 mm.

Based on this application embodiment, the monitor card adopts 6U standard structural design, and its fourth panel has adopted upper and lower two to help and has pulled out ware structural design to make things convenient for user's plug.

In order to facilitate the later debugging work of the user, in some embodiments, the monitoring board 4 further includes a debugging port. The debugging port is arranged on the fourth panel, and the external device is used for debugging the monitoring board card 4 through the debugging port. The reset key and the debugging port are arranged along the length direction, and the power indicator lamp and the status indicator lamp are positioned between the reset key and the debugging port along the length direction.

In the embodiment of the present invention, the number ratio of the switch board, the monitor board 4, the master board, the demodulator board, and the transcoding board is 2:9:3:1:1, the largest data stream comes from the demodulator board, each demodulator board outputs four 38M data streams, the maximum bandwidth required by each demodulator board is about 38 × 4 ═ 152Mb, each transcoding board has 24 channels, each channel may be receiving the code stream of the demodulator board, the transcoding board outputs 2M of the maximum code stream, so the maximum bandwidth required by one transcoding board is 24 (38+2) ═ 1520Mb, the maximum bandwidth required by the master board is 38+2 × 24 × 3 ═ 182M, the maximum bandwidth required by the service card is about 152 × 9+ 3+182 ═ 2 ═ 6292Mb ═ 786.8Mb, the maximum bandwidth required by both sides is 1.54G, multicast analysis is performed, and the information of small flow such as self-test information is performed, the bandwidth requirement does not exceed 2G. 4G throughput can be realized after aggregation is carried out by using 4 kilomega network ports, so that the requirement of broadcasting and television services can be met, a certain margin is reserved, and waste is avoided.

As shown in fig. 2, in the embodiment of the present invention, in order to display the operation state of each service board monitored by the monitoring board 4, a touch screen 7 is disposed on the first panel 2, and the touch screen 7 is connected to the monitoring board 4.

As shown in fig. 2, in the embodiment of the present invention, in order to accurately monitor the temperature inside the housing 1, the first temperature sensor 14 and the second temperature sensor 15 are disposed in the heat dissipation channel 7, and the first temperature sensor 14 and the second temperature sensor 15 are respectively disposed on the first back plate 5 and the second back plate 15, respectively, that is, the first temperature sensor 14 is disposed on the first back plate 5, and the second temperature sensor 15 is disposed on the second temperature sensor 15; meanwhile, the first temperature sensor 14 and the second temperature sensor 15 are both connected with the monitoring board card 4.

As shown in fig. 2, in the embodiment of the present invention, the present invention further includes a redundant power supply module 8, an input end of the redundant power supply module 8 is used for connecting two external power supplies (the power supply is generally 220V), and an output end of the redundant power supply module 8 is connected to the back plate 5 and the touch screen 7, respectively. In order to improve the conversion efficiency of the power supply and enable each service board and the backplane 5 to operate continuously and stably, as an optional implementation: the redundant power supply module 8 includes four power conversion modules CSUs 550, and in the present embodiment, each CSU550 is integrated, and the output power of each CSU550 is equal.

In order to monitor the stability of the input power of the backboard 5, the power board cards are arranged on the first backboard 5 and the second backboard 12.

The power interface is located at the position 3 marked with the first backboard 5 and the second backboard 12 as shown in fig. 6 and fig. 7, which has the advantages of realizing the maximum utilization rate of space, realizing the combination of 4 power supplies and simultaneously meeting the requirement of centralized heat dissipation;

as shown in fig. 9 to 11, in the embodiment of the present invention, the fan module 9 is disposed at the bottom of the inner cavity of the housing 1, and the fan module 9 is located below the heat dissipation channel 7 and connected to the redundant power module 8, so that the present invention solves the problem that the air in the conventional industrial PC chassis is not smooth and cannot dissipate heat effectively.

In the embodiment of the present invention, the fan module 9 includes a fan tray 91, a handle 92 for inserting and extracting the fan tray 91, and three fans 93; the handle 92 is fixedly mounted on the fan disc 91; the fan disc 91 is connected with the shell 1 through loose and non-removable screws so as to realize that the fan module 9 is drawn on the shell 1; the three fans 92 are all mounted on the fan disc 91, and the fans 92 are interconnected with the power supply socket and the signal socket through the collision connectors; the power supply socket is arranged on the second panel 3, and the second panel 3 is also provided with a switch key.

The utility model adopts the fan to actively dissipate heat. The bottom of the case 1 of the shell is provided with a 1U pull-out fan disc, each fan disc is provided with 3 high-power fans, the whole air channel of the shell 1 is air-out from the air inlet upper part at the bottom, and the dust screen which is easy to replace is arranged at the air inlet of the shell 1.

This design of 1U pull-out fan module is compatible with A, B system. 3 industrial 4-wire fans (with rotating speed feedback and rotating speed PWM control) with the size of 120mm multiplied by 25mm are arranged in a single fan group, and the size of the whole fan group is 447mm multiplied by 160mm multiplied by 40 mm. The fan is interconnected with an internal power supply and signal socket through the clash connector.

Fan module 9 is through the both sides pine not take off the screw and fasten with casing 1, and fan dish 91 design handle (the handle material is the aluminum alloy, external diameter 6mm, pitch-row 30mm, and high 31mm is taken M4 screw hole certainly, with behind the fan dish 91 cooperation with screw fastening can) accomplish to help to insert and help to pull out.

Description of fan installation and replacement: the fan is fixed to the fan tray 91 by 4 screws at the corners and the terminals of the fan cables are inserted onto the fan bus board. When the bus bar is replaced, the fan terminal of the bus bar is pulled down, and the fan is detached.

As shown in fig. 12, in the embodiment of the present invention, a dust-proof device is disposed below the fan module 9, and the dust-proof device is mounted on the housing 1 through a groove disposed on the housing 1 to prevent dust from entering into the inner cavity of the housing 1, so as to improve the heat dissipation efficiency of the present invention.

The dustproof device comprises a dustproof drawing plate 10 and a dustproof assembly, wherein the dustproof assembly is fixedly installed on the dustproof drawing plate 10, and sliding blocks matched with the grooves are formed on two sides of the dustproof drawing plate 10. The dustproof assembly comprises a first combination plate 11, a second combination plate 13 and a dustproof net; the dust screen sets up between first compoboard 11 and second compoboard 13, and first compoboard 11 passes through screw and second compoboard 13 fixed connection.

The dustproof device is characterized in that parts need to be maintained and replaced frequently, and therefore the design idea is mainly convenient to maintain.

Be provided with the dust screen between first compoboard 11 and the second compoboard 13, both pass through countersunk screw fastening, take out board 10 at dustproof to the monolithic stationary again, the dust keeper design of casing 1 bottom is the pull formula, hide under the fan box, during routine maintenance, take out fan disc 91 earlier, take out bottom dust keeper again, remove the fastening screw between compoboard and the dustproof board 10 of taking out, be convenient for clear up the dust screen in the middle of the compoboard, and is very convenient.

In the embodiment of the utility model, the shell 1 is further provided with a slot position identification code so as to identify the slot position corresponding to each functional card and facilitate the daily maintenance of the card.

As shown in fig. 4, in the embodiment of the present invention, the first panel 2 is laid out as follows: 1 4.3-inch liquid crystal display screen; 1U fan module 9; 2 3U redundant power supply cards are positioned; 16 6U card insertion positions; and (3) equipment silk-screen printing: LCD screen top is "broadcasting and TV LOGO and name", typeface: regular script, high word: 4.0 mm. The machine case two-dimensional code is printed on a first 'blank' panel on the left side of the machine case, and the character is high: 12 mm. times.12 mm.

As shown in fig. 5, in the embodiment of the present invention, the layout of the second panel 3 is: 2 sets of alternating current power supply sockets (with fastening devices); 1 appliance switch (with indicator light); 1 4-bit equipment coding switch; 1U fan module; 2 3U redundant power supply cards are positioned; 16 6U card insertion positions.

Compared with the closest prior art, the utility model has the following technical advantages:

1. reliability advantage

The design changes the combination of the traditional multi-device cascade form into a CPCI card-inserting type integrated framework: the server host is changed into a main control board card, the functional unit equipment is changed into a service board card, the network switch is changed into a switching board card, and the power supply equipment is changed into a current-sharing redundant power supply module; and a new state monitoring board card is added for monitoring the working state of the case. All the functional board cards are inserted into the chassis to form a system monitoring front-end system.

It is often quite time consuming to replace a board card from a traditional industrial PC system; the user releases and removes the chassis cover. There may be some internal connection cables between the board card and the peripheral device. These connections must be disconnected during card changes, and the process is therefore error-prone. So in terms of ruggedness, conventional industrial PC systems cannot be as compact and efficient as the CompactPCI system.

On the other hand, the CompactPCI design allows plug cards to be unplugged from the front panel. The CompactPCI card is very simple to replace without removing the chassis cover. In addition, because the I/O connection is through the back panel, there is not any connection on the compactPCI board card in front, so it is very fast and simple to change the board card. The maintenance time will be reduced from hours to minutes, thereby reducing the MTTR (mean maintenance time).

The traditional equipment card can not provide reliable and safe support for peripheral equipment card in the system, and the card and the peripheral equipment card can only be fixed at one point. The top and bottom of the card are also unsupported by rails, and the card-slot junction is also susceptible to poor contact during shock. The CompactPCI card is firmly fixed on the chassis and supported by the guide rails on the top and bottom. The front panel fastening device safely fixes the front panel and the surrounding frame together. The connection portion of the card and the slot is tightly connected by the pin-hole connector. Since the card is firmly held in place on all four sides, a permanent connection is ensured without contact failure even in severe impact and shock situations.

The traditional industrial PC case has unsmooth air flow and cannot effectively dissipate heat. Air flow is blocked by the passive master, the card holder and the disk drive. Cold air cannot circulate among all board cards, and hot air cannot be immediately exhausted out of the chassis. Electronic equipment and circuit boards are damaged by these cooling problems, causing deformation, disconnection, and short life. The CompactPCI system provides a smooth heat dissipation path for all heat-generating boards in the system. The cold air can flow between the board cards at will and take away the heat. The fan system integrated at the bottom of the board card also accelerates the heat dissipation process. Compact pci systems rarely suffer from heat dissipation problems due to the unobstructed heat dissipation path brought about by the good mechanical design.

2. Cost control advantage

The monitoring front-end equipment reported here mainly has two aspects in the reduction of cost: 1. manufacturing costs and maintenance and guarantee costs.

The production and manufacturing cost is as follows: and the integrated design of the board card is adopted, so that the material cost and the labor cost for processing a large number of structural parts in the original design are reduced.

3. Energy saving and environmental protection

This time, change original independent unit equipment into integrated circuit board: the original function unit is composed of a plurality of single-machine devices, and each single-machine device is provided with a self-contained structural member. The surface coating of the structural member relates to environmental protection problems and can bring certain environmental pollution. After the hardware integration, the equipment becomes a single board form: and the single board is produced and manufactured by adopting a lead-free process of the PCB and the components, so that the aims of saving energy and protecting environment of the product are fulfilled.

4. Advantage of expandability

The detailed production specifications of hardware and software of the main control card, the demodulation card and the transcoding card are defined, the main control card, the demodulation card and the transcoding card produced according to the software and hardware specifications can be interchanged, waste is reduced, and economic value is generated.

5. Maintenance manageability advantages

All the functional units are unified into a public open platform in a board card mode, any common board card has a state reporting function, and the working state of the board card is uploaded to a central upper computer end through a network in real time through a main control, so that remote monitoring is facilitated; meanwhile, the equipment adds a case state monitoring card, and monitors and reports the working state of the central platform case in real time; therefore, the central platform can remotely measure and monitor the running states of the equipment case and the board card, and once the equipment has running problems, the central platform can remotely position fault points and guide field personnel to carry out repair guarantee work.

The architecture of the present invention is characterized in that:

firstly, the Ethernet bus technology is continuously adopted;

secondly, the traditional mechanical structure is abandoned, and a high-reliability European card structure which is tested in practice for 20 years is used, so that the heat dissipation condition is improved, the vibration and impact resistance is improved, and the electromagnetic compatibility requirement is met;

and thirdly, a golden finger type interconnection mode of the traditional card is abandoned, and a pin hole connector with the density of 2mm is used instead, so that the card has air tightness and corrosion resistance, the reliability is further improved, and the load capacity is increased.

According to the utility model, the main control, demodulation and transcoding functional units are integrated in one set of equipment, the design concept of the current mainstream CPCI architecture is used for reference, the functional units appear in the form of functional board cards, and the integration level, reliability and maintainability of the product are comprehensively improved; and greatly reduces the development and production cost of the product. The utility model also adds the functions of state monitoring and function module state reporting, is convenient for the central remote monitoring equipment to work, and can remotely position the fault in real time and guide field personnel to overhaul and maintain when the equipment has problems.

It is to be understood that the above-described embodiments of the present invention are merely illustrative of or explaining the principles of the utility model and are not to be construed as limiting the utility model. Therefore, any modification, equivalent replacement, improvement and the like made without departing from the spirit and scope of the present invention should be included in the protection scope of the present invention. Further, it is intended that the appended claims cover all such variations and modifications as fall within the scope and boundaries of the appended claims or the equivalents of such scope and boundaries.

Claims (10)

1. A standardized cable digital television monitoring front-end device is characterized in that,

comprises a shell, a first panel, a second panel and a fastening device;

the first panel is mounted on the shell through the fastening device;

the second panel is arranged on the shell and is opposite to the first panel;

the inner wall of the shell is provided with a guide rail;

also comprises a back plate positioned in the inner cavity of the shell, a plurality of functional board cards and a pull-out aid arranged on the functional board cards,

the back plate is arranged in the inner cavity of the shell through the guide rail and is positioned between the first panel and the second panel;

one end of the functional board card is arranged in the clamping groove on the shell through the pulling aid, and the other end of the functional board card is arranged on the back plate through the pinhole connector.

2. The standardized cable digital television monitoring headend device of claim 1,

the function integrated circuit board comprises an exchange integrated circuit board, a monitoring integrated circuit board, a master control integrated circuit board, a demodulation integrated circuit board and a transcoding integrated circuit board, wherein a network interface is arranged on the exchange integrated circuit board, and the exchange integrated circuit board is connected with a service integrated circuit board arranged on the back plate, except the exchange integrated circuit board, through the network interface.

3. The standardized cable digital television monitoring headend device of claim 2,

the backboard is provided with a first slot for inserting the main control board card, the demodulation board card and the transcoding board card, a second slot for inserting the monitoring board card and a third slot for inserting the switching board card.

4. The standardized cable digital television monitoring headend device of claim 3,

the backboard comprises a first backboard and a second backboard, and the first backboard is connected with the second backboard through the exchange board card;

the first back plate is arranged close to the first panel;

the second back plate is arranged close to the second panel;

a heat dissipation channel is formed between the first back plate and the second back plate.

5. The standardized cable digital television monitoring headend device of claim 4,

the switching board cards comprise a first switching board card arranged on the first backboard and a second switching board card arranged on the second backboard;

network interfaces are arranged on the first exchange board card and the second exchange board card;

the first exchange board card is connected with the second exchange board card through the network interface so as to realize the connection of the first backboard and the second backboard.

6. The standardized cable digital television monitoring headend device of claim 2, wherein;

the main control board card is connected with the cable television monitoring center platform and is used for carrying out data interaction with the cable television monitoring center platform;

the main control board card comprises a third panel, a shielding barrier strip, a circuit board, a CPCI adapter and two pull-out aids;

the shielding barrier strip is arranged on one side of the periphery of the panel, and the circuit board is arranged on the third panel;

the CPCI adapter is arranged on one side of the circuit board, which is far away from the third panel;

the two pull-out aids are arranged at two opposite ends of the third panel, and the main control board card is detachably arranged on the clamping groove through the two pull-out aids;

the main control board card also comprises a reset key, a power indicator, a status indicator, a network port, an audio/video port and a data port, wherein the reset key, the power indicator, the status indicator, the network port, the audio/video port and the data port are arranged on the surface of the third panel, which is far away from the circuit board;

the reset key, the power indicator light, the status indicator light, the network port, the audio/video port and the data port are electrically connected with the circuit board through the third panel.

7. The standardized cable digital television monitoring headend device of claim 2, wherein;

the demodulation board card and the transcoding board card are connected with the exchange board card through the network interface.

8. The standardized cable digital television monitoring headend device of claim 2,

the monitoring board card is connected with the exchange board card through the network interface;

the monitoring board card comprises a circuit board, a CPCI adapter, a fourth panel and two pull-out aids, wherein the CPCI adapter is arranged on the circuit board, and the monitoring board card transmits data through the CPCI adapter;

the fourth panel is positioned at one end of the base material board of the circuit board, which is opposite to the CPCI adapter;

the pulling-out aids are arranged at two opposite ends of the fourth panel, and the monitoring board card is detachably arranged on the clamping groove through the pulling-out aids;

the monitoring board card also comprises a power indicator light, a status indicator light, a reset key and a debugging port;

the power indicator lamp is arranged on the surface, away from the circuit board, of the fourth panel and used for displaying the power state of the monitoring board card;

the status indicator lamp is arranged on the surface, away from the circuit board, of the fourth panel and used for displaying the working status of the monitoring board card;

the reset key is arranged on the surface of the fourth panel, which is far away from the circuit board, and the reset key is used for resetting the working state of the monitoring board card;

the debugging port is arranged on the fourth panel, and the external equipment is used for debugging the monitoring board card through the debugging port.

9. The standardized cable digital television monitoring headend device of claim 2,

the first panel is provided with a touch screen, and the touch screen is connected with the monitoring board card and used for displaying the running state of each service board card monitored by the monitoring board card.

10. The standardized cable digital television monitoring headend device of claim 4, wherein;

the heat dissipation device also comprises a first temperature sensor and a second temperature sensor which are positioned in the heat dissipation channel;

the first temperature sensor and the second temperature sensor are both connected with the monitoring board card;

the first temperature sensor is arranged on the first back plate;

the second temperature sensor is disposed on the second back plate.

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