CN108174312A - A kind of VDF intelligent crossovers device and its cross method - Google Patents
A kind of VDF intelligent crossovers device and its cross method Download PDFInfo
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04Q—SELECTING
- H04Q1/00—Details of selecting apparatus or arrangements
- H04Q1/02—Constructional details
- H04Q1/14—Distribution frames
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04Q—SELECTING
- H04Q1/00—Details of selecting apparatus or arrangements
- H04Q1/02—Constructional details
- H04Q1/14—Distribution frames
- H04Q1/141—Details of connexions between cable and distribution frame
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04Q—SELECTING
- H04Q1/00—Details of selecting apparatus or arrangements
- H04Q1/18—Electrical details
- H04Q1/30—Signalling arrangements; Manipulation of signalling currents
Abstract
The present invention relates to intelligent wiring fields, and in particular to a kind of VDF intelligent crossovers device and its cross method.The present invention uses FPGA and PCM encoding and decoding techniques, analog signal data-signal is changed into using pcm encoder to be handled, the arbitrary intersection of speech line is realized by time-slot cross, without field operation, operation and resource data realize automatic management, solves the existing mainly manually wire jumper of current audio wiring, it is time-consuming and laborious, easily error, change needs hand-kept every time, increase error probability, service time is long, the problems such as difficult in maintenance, and with multichannel, across computer room, it is trans-regional, fast, in real time, the features such as accurate, with extensive Practical significance.
Description
Technical field
The present invention relates to intelligent wiring fields, and in particular to a kind of VDF intelligent crossovers device and its cross method.
Background technology
VDF voice distribution frames are to be used for final exchange line or junction line, and the equipment that can they be carried out with allotment connection.Match
Coil holder is most important component in management subsystem, is to realize the hinge for vertically and horizontally connecting up two subsystems interconnection.
Current audio wiring is mainly that manually wire jumper, time-consuming and laborious, easily error, every time change need hand-kept, increase mistake
Probability, service time is long, difficult in maintenance.
Invention content
To solve the above-mentioned problems, the present invention provides a kind of VDF intelligent crossovers device and its cross method, particular techniques
Scheme is as follows：
A kind of VDF intelligent crossovers device includes user interface section, the first FPGA processing units, cross-over control unit, second
FPGA processing units, relay interface unit, main control unit；The phone is connect with user interface section, the user interface list
Member, the first FPGA processing units, cross-over control unit, the 2nd FPGA processing units, relay interface unit are sequentially connected, in described
It is connect after interface unit with programme-controlled exchange unit；The main control unit respectively at the first FPGA processing units, the 2nd FPGA
Manage unit, the connection of cross-over control unit；
The user interface section for completing the detection of phone related status information and forwarding, the analog voice signal of phone into
Row pcm encoder, which is converted into being sent to the first FPGA processing units after PCM vocoded datas, to be handled, while the first FPGA
The PCM vocoded datas that processing unit unit sends over change into analog voice signal and pass phone back；
The first FPGA processing units are for handling the PCM vocoded datas that user interface section is sent, after processing
Data transfer give cross-over control unit, while user interface list is sent to after the data processing that cross-over control unit is sent
Member；
The cross-over control unit is used for PCM time-slot cross, according to the control information of main control unit, relay interface unit when
Gap signal and corresponding channel associated signalling are crossed in corresponding user interface section time slot, and user interface is realized by time-slot cross
The intersection of unit PCM voice data and phone status information；
The 2nd FPGA processing units, which are used to being sent to relaying after the processing data information that sends cross-over control unit, to be connect
Mouth unit, while cross-over control unit is sent to after the processing data information that relay interface unit is sended over；
The relay interface unit is for completing the detection of programme-controlled exchange speech interface related status information and forwarding, program-controlled friendship
Change planes output analog voice signal carry out pcm encoder after change into PCM vocoded datas and be sent to the 2nd FPGA processing units
Processing, while the PCM vocoded datas that the 2nd FPGA processing units are sended over change into after analog signal and pass program-controlled friendship back
It changes planes；
The main control unit is used for the operation and control of the first FPGA processing units, the 2nd FPGA processing units, cross-over control unit.
Further, the user interface section includes dislodging machine testing module, ring module, power feeding module, audio transmission
Channel, PCM codec, line test module；The dislodging machine testing module is to be in off hook state also for detecting phone
It is hook state；The ring module is transmitted to phone for receiving ringing instruction and generating bell signal；The power feeding module
For providing feed voltage for phone；The audio transmission channel is used for the shaping filter of analog voice signal；The PCM compiles solution
Code device is used to that the analog voice signal of phone to be changed into PCM vocoded datas and PCM vocoded datas are changed into phone
Analog voice signal；The line test module is used to test the combined-voltage, insulation resistance and loop circuit of telephone wire.
Further, the dislodging machine testing module is calculated by the voltage of A/D chip testing known resistances by Ohm's law
Go out loop current, judge to pluck hook state according to the size of loop current；
The ring module includes DC-DC circuit, for generating ringing voltage；
The power feeding module generates feed voltage by DC-DC circuit；
The audio transmission channel realizes the shaping filter of voice signal by operational amplifier and low-pass filter；
PCM codec PCM coding-decoding circuits as built in user interface chip SI32260 complete analog voice signal
PCM encoding and decoding；
The line test module is completed correlation function by A/D conversion circuits and is tested.
Further, the relay interface unit includes ring detection module, feed detection module, audio transmission channel, PCM
Codec；The ring detection module is used to detect the bell signal that programme-controlled exchange is sent out；
The feed detection module is used to detect the feed voltage of programme-controlled exchange output：The audio transmission channel is used to simulate
The shaping filter of voice signal；
The PCM codec is used to the analog voice signal that programme-controlled exchange exports changing into PCM vocoded datas and incite somebody to action
PCM vocoded datas change into analog voice signal.
Further, the ring detection module identifies ringing condition by A/D conversion circuits and signal processing circuit；
The audio transmission channel realizes the shaping filter of voice signal by operational amplifier and low-pass filter；
PCM codec PCM coding-decoding circuits as built in trunk interface chip SI3050 realize the encoding and decoding of voice signal.
Further, the first FPGA processing units and the 2nd FPGA processing units mainly include clock module, PCM is multiplexed
And demultiplexing module, the clock module provide the synchronised clock of communication, the PCM multiplexing reconciliation of the first FPGA processing units
The 30 road 64Kbit voices and status information that the multiple user interface sections of Multiplexing module completion transmit are multiplexed into one completely
30/32 road frames of PCM and be transmitted to cross-over control unit, while the 30/32 road frames of PCM that cross-over control unit is sended over
Each user interface section is transmitted to after demultiplexing；The PCM multiplexings of the 2nd FPGA processing units and demultiplexing module are completed
The 30 road 64Kbit voices and status information that relay interface unit transmits are multiplexed into a complete 30/32 road frame of PCM simultaneously
Cross-over control unit is transmitted to, while in being transmitted to after the 30/32 road frame demultiplexings of PCM that cross-over control unit sends over
After interface unit.
Further, the clock module includes local clock, recovered clock and PLL chips, and local clock is by local crystal oscillator
It generates, PLL chips are for clock synchronization and clock source selection.
Further, the PCM multiplexings and demultiplexing module are realized by FPGA internal logic circuits, 30 road 64K of multiplexing Shi Ba
Voice messaging is inserted respectively into 30 time slots, and corresponding synchronizing information and speech channel status information are inserted respectively into TS0 and TS16, solution
Multiplexing is 30/32 frame to be divided into the voice messaging of 30 road 64K and status information is transmitted to corresponding user interface section respectively.
Further, the communication interface of the user interface section and the first FPGA processing units is the first pcm interface and
One SPI interface, first pcm interface are used for transmission the voice messaging that bandwidth is 64Kbit, and first SPI interface is used to pass
Defeated control and status information；The communication of first the FPGA processing units, the 2nd FPGA processing units and cross-over control unit connects
Mouth is the second pcm interface and the second SPI interface, and second pcm interface is used for transmission the voice messaging that bandwidth is 2048Mbit,
Second SPI interface is used for transmission control information；The relay interface unit and the communication interface of the 2nd FPGA processing units
It is third pcm interface and third SPI interface, the third pcm interface is used for transmission the voice messaging that bandwidth is 64Kbit, described
Third SPI interface is used for transmission control and status information；The main control unit and the first FPGA processing units platform and the 2nd FPGA
The communication interface of processing unit is the 4th SPI interface, and the 4th SPI interface is used for transmission control information；The main control unit
Communication interface with cross-over control unit is GPMC interfaces, and the GPMC interfaces are used for transmission control and status information.
A kind of cross method of VDF intelligent crossovers device includes the following steps：
（1）Phone caller, receiver off-book, the off-hook detection module of user interface section detect generation off-hook shape after receiver off-book
A roads phone analog voice signal is changed into a roads 64Kbit voice PCM time slots by state information, the PCM codec of user interface section
Data；
（2）Off hook state information is multiplexed into time slot TS16 by the first FPGA processing units, and the first FPGA processing units are by a roads
64Kbit voice PCM time slot data are transmitted to cross-over control unit after being multiplexed with phone PCM30/32 frames；The phone PCM30/32
Frame includes 32 time slots, and wherein time slot TS0 is used for transmission synchronizing information, and time slot TS16 is used for transmission channel associated signalling；Remaining time slot
TSi is used to load a roads 64Kbit voice PCM time slot data, wherein,；
（3）2nd FPGA processing units by user interface section by cross-over control unit transmit come phone PCM30/32 frame numbers
64Kbit voices PCM time slots data and speech channel status information are demultiplexing as, and be transmitted to relaying and connect according to corresponding channel associated signalling
Mouth unit；
（4）64Kbit voice PCM time slot data are converted to analog voice signal, and analog voice signal by relay interface unit
Programme-controlled exchange is passed back with speech channel status information；
（5）Phone is called, and programme-controlled exchange sends ring, and the ring detection module of relay interface unit generates after detecting ring
The a roads analog voice signal that programme-controlled exchange exports is changed into a by ringing condition information, the PCM codec of relay interface unit
Road 64Kbit voice PCM time slot data；
（6）Ringing condition information is multiplexed into time slot TS16 by the 2nd FPGA processing units, and the 2nd FPGA processing units are by a roads
64Kbit voice PCM time slot data are transmitted to cross-over control unit after being multiplexed with 30/32 frames of programme-controlled exchange PCM；The program-controlled friendship
30/32 frames of PCM of changing planes include 32 time slots, and wherein time slot TS0 is used for transmission synchronizing information, and time slot TS16 is used for transmission with road
Signaling；Remaining time slot TSj is used to load a roads 64Kbit voice PCM time slot data, wherein,；Before time-slot cross is not carried out, the PCM time slots data in time slot TSj are carried out with the PCM time slots data in time slot TSi
Interaction, wherein, i=j；
（7）Modification cross-over configuration table is handed down to main control unit, and main control unit intersects demand according to the information of cross-over configuration table
Related time-slot issues cross-over control unit；
（8）Cross-over control cell pairs carry out cross-over configuration after interface unit and user interface section corresponding time slot position, in
It is crossed in corresponding user interface section time slot after the PCM time slots data of interface unit and corresponding channel associated signalling, when passing through
Gap intersects the intersection for realizing user interface section；After carrying out time-slot cross, in the PCM time slots data and time slot TSi in time slot TSj
PCM time slot data interact, wherein,；
（9）First FPGA processing units by relay interface unit by cross-over control unit transmit come programme-controlled exchange PCM30/
32 frame data and corresponding channel associated signalling are demultiplexing as 64Kbit voices PCM time slots data and speech channel status information, and are transmitted to
User interface section；
（10）The PCM time slot data of 64Kbit voices are converted to analog voice signal, and analog voice by user interface section
Signal and speech channel status information pass phone back.
Beneficial effects of the present invention are：
The present invention uses FPGA and PCM encoding and decoding techniques, and analog signal is changed into data-signal using pcm encoder and is handled,
The arbitrary intersection of speech line is realized by time-slot cross, without field operation, operation and resource data realize automatic management,
It is mainly that manually wire jumper, time-consuming and laborious, easily error, each change needs are remembered by hand that it is existing, which to solve current audio wiring,
Record increases error probability, and service time is long, it is difficult in maintenance the problems such as, and with multichannel, across computer room, trans-regional, quick, real
When, it is accurate the features such as, have extensive Practical significance.
Description of the drawings
Fig. 1 is a kind of principle schematic of VDF intelligent crossovers device in the present invention.
Specific embodiment
In order to better understand the present invention, the invention will be further described in the following with reference to the drawings and specific embodiments：
As shown in Figure 1, a kind of VDF intelligent crossovers device includes user interface section, the first FPGA processing units, cross-over control list
Member, the 2nd FPGA processing units, relay interface unit, main control unit；Phone is connect with user interface section, user interface list
Member, the first FPGA processing units, cross-over control unit, the 2nd FPGA processing units, relay interface unit are sequentially connected, and relaying connects
Mouth unit is connect with programme-controlled exchange unit；Main control unit respectively with the first FPGA processing units, the 2nd FPGA processing units, hand over
Pitch control unit connection.
User interface section for completing the detection of phone related status information and forwarding, the analog voice signal of phone into
Row pcm encoder, which is converted into being sent to the first FPGA processing units after PCM vocoded datas, to be handled, while the first FPGA
The PCM vocoded datas that processing unit unit sends over change into analog voice signal and pass phone back.
User interface section includes dislodging machine testing module, ring module, power feeding module, audio transmission channel, PCM and compiles solution
Code device, line test module；Dislodging machine testing module is in off hook state or hook state for detecting phone；Ring mould
Block is transmitted to phone for receiving ringing instruction and generating bell signal；Power feeding module is used to provide feed voltage for phone；Sound
Frequency transmission channel is used for the shaping filter of analog voice signal；PCM codec is used to change into the analog voice signal of phone
PCM vocoded datas and the analog voice signal that PCM vocoded datas are changed into phone；Line test module is used to test
Combined-voltage, insulation resistance and the loop circuit of telephone wire.
Wherein, dislodging machine testing module calculates loop by the voltage of A/D chip testing known resistances by Ohm's law
Electric current judges off hook state according to the size of loop current；Ring module includes DC-DC circuit, for generating ringing voltage；
Power feeding module generates feed voltage by DC-DC circuit；Audio transmission channel is realized by operational amplifier and low-pass filter
The shaping filter of voice signal；PCM codec PCM coding-decoding circuits as built in user interface chip SI32260 complete simulation
The PCM encoding and decoding of voice signal；Line test module is completed correlation function by A/D conversion circuits and is tested.
First FPGA processing units are for handling the PCM vocoded datas that user interface section is sent, after processing
Data transfer give cross-over control unit, while user interface list is sent to after the data processing that cross-over control unit is sent
Member.
Cross-over control unit is used for PCM time-slot cross, according to the control information of main control unit, relay interface unit when
Gap signal and corresponding channel associated signalling are crossed in corresponding user interface section time slot, and user interface is realized by time-slot cross
The intersection of unit PCM voice data and phone status information.Cross-over control unit provides multimachine interconnecting interface, and every 30 road voice is answered
With into an E1 link, using 2.5G interconnecting interfaces, multiple devices cascade is supported to realize appointing for 30000*30000 roads telephone line
Meaning is intersected, and ensures the normal work of phone.
2nd FPGA processing units, which are used to being sent to relaying after the processing data information that sends cross-over control unit, to be connect
Mouth unit, while cross-over control unit is sent to after the processing data information that relay interface unit is sended over.
First FPGA processing units and the 2nd FPGA processing units mainly include clock module, PCM multiplexings and demultiplexing mould
Block, clock module provide the synchronised clock of communication, and the PCM multiplexings of the first FPGA processing units and demultiplexing module complete multiple use
The 30 road 64Kbit voices and status information that family interface unit transmits are multiplexed into a complete 30/32 road frame of PCM and turn
Cross-over control unit is issued, while each being transmitted to after the 30/32 road frame demultiplexings of PCM that cross-over control unit sends over
User interface section；The PCM multiplexings of 2nd FPGA processing units and demultiplexing module complete what relay interface unit transmitted
30 road 64Kbit voices and status information are multiplexed into a complete 30/32 road frame of PCM and are transmitted to cross-over control unit, together
When being transmitted to relay interface unit after 30/32 road frame demultiplexing of PCM that cross-over control unit sends over.
Clock module includes local clock, recovered clock and PLL chips, and local clock is generated by local crystal oscillator, PLL chips
For clock synchronization and clock source selection.
PCM is multiplexed and demultiplexing module is realized by FPGA internal logic circuits, 30 road 64K voice messagings difference of multiplexing Shi Ba
30 time slots are inserted into, corresponding synchronizing information and speech channel status information are inserted respectively into TS0 and TS16, and demultiplexing is 30/
32 frames are divided into the voice messaging of 30 road 64K and status information is transmitted to corresponding user interface section respectively.
Relay interface unit is for completing the detection of programme-controlled exchange speech interface related status information and forwarding, program-controlled friendship
Change planes output analog voice signal carry out pcm encoder after change into PCM vocoded datas and be sent to the 2nd FPGA processing units
Processing, while the PCM vocoded datas that the 2nd FPGA processing units are sended over change into after analog signal and pass program-controlled friendship back
It changes planes.
Relay interface unit includes ring detection module, feed detection module, audio transmission channel, PCM codec；It shakes
Bell detection module is used to detect the bell signal that programme-controlled exchange is sent out；Feed detection module exports for detecting programme-controlled exchange
Feed voltage：Audio transmission channel is used for the shaping filter of analog voice signal；PCM codec is used for programme-controlled exchange
The analog voice signal of output changes into PCM vocoded datas and PCM vocoded datas is changed into analog voice signal.
Wherein, ring detection module identifies ringing condition by A/D conversion circuits and signal processing circuit；Audio transmission leads to
The shaping filter of voice signal is realized by operational amplifier and low-pass filter in road；PCM codec is by trunk interface chip
PCM coding-decoding circuits built in SI3050 realize the encoding and decoding of voice signal.
Main control unit is used for the operation and control of the first FPGA processing units, the 2nd FPGA processing units, cross-over control unit.
Main control unit includes CPU module, ethernet control module and memory module；CPU module is used for the first FPGA
Manage unit, the 2nd FPGA processing units and the control of cross-over control unit operation, data processing and network management interface data input and output；
Ethernet control module is used for the transmitting-receiving of Ethernet data；Memory module is stored and is cached for data.Wherein, CPU element is adopted
The integrated chip of integrated chip model AM335X series；The ethernet PHY collection for the 100M that Ethernet control unit uses
Into chip；Storage unit uses the storage chip of DDR3.
The communication interface of user interface section and the first FPGA processing units is the first pcm interface and the first SPI interface,
One pcm interface is used for transmission the voice messaging that bandwidth is 64Kbit, and the first SPI interface is used for transmission control and status information；The
The communication interface of one FPGA processing units, the 2nd FPGA processing units and cross-over control unit is the second pcm interface and the 2nd SPI
Interface, the second pcm interface are used for transmission the voice messaging that bandwidth is 2048Mbit, and the second SPI interface is used for transmission control information；
Relay interface unit and the communication interface of the 2nd FPGA processing units are third pcm interface and third SPI interface, and the 3rd PCM connects
Mouth is used for transmission the voice messaging that bandwidth is 64Kbit, and third SPI interface is used for transmission control and status information；Main control unit with
The communication interface of first FPGA processing units platform and the 2nd FPGA processing units is the 4th SPI interface, and the 4th SPI interface is used to pass
Defeated control information；The communication interface of main control unit and cross-over control unit is GPMC interfaces, GPMC interfaces be used for transmission control and
Status information.
A kind of cross method of VDF intelligent crossovers device includes the following steps：
（1）Phone caller, receiver off-book, the off-hook detection module of user interface section detect generation off-hook shape after receiver off-book
State information, when No. 30 phone analog voice signals are changed into 30 road 64Kbit voice PCM by the PCM codec of user interface section
Gap data；
（2）Off hook state information is multiplexed into time slot TS16 by the first FPGA processing units, and the first FPGA processing units are by 30 tunnels
64Kbit voice PCM time slot data are transmitted to cross-over control unit after being multiplexed with phone PCM30/32 frames；Phone PCM30/32 frame packets
32 time slots are included, wherein time slot TS0 is used for transmission synchronizing information, and time slot TS16 is used for transmission channel associated signalling；Remaining time slot TSi is used
In 30 road 64Kbit voice PCM time slot data of loading, wherein；
（3）2nd FPGA processing units by user interface section by cross-over control unit transmit come phone PCM30/32 frame numbers
64Kbit voices PCM time slots data and speech channel status information are demultiplexing as, and be transmitted to relaying and connect according to corresponding channel associated signalling
Mouth unit；
（4）64Kbit voice PCM time slot data are converted to analog voice signal, and analog voice signal by relay interface unit
Programme-controlled exchange is passed back with speech channel status information；
（5）Phone is called, and programme-controlled exchange sends ring, and the ring detection module of relay interface unit generates after detecting ring
Ringing condition information, the PCM codec of relay interface unit change into the 30 road analog voice signals that programme-controlled exchange exports
30 road 64Kbit voice PCM time slot data；
（6）Ringing condition information is multiplexed into time slot TS16 by the 2nd FPGA processing units, and the 2nd FPGA processing units are by 30 tunnels
64Kbit voice PCM time slot data are transmitted to cross-over control unit after being multiplexed with 30/32 frames of programme-controlled exchange PCM；Programme-controlled exchange
30/32 frames of PCM include 32 time slots, and wherein time slot TS0 is used for transmission synchronizing information, and time slot TS16 is used for transmission channel associated signalling；
Remaining time slot TSj is used to load 30 road 64Kbit voice PCM time slot data, wherein；It is not carrying out
Before time-slot cross, the PCM time slots data in time slot TSj are interacted with the PCM time slot data in time slot TSi, wherein, i=j；
（7）Modification cross-over configuration table is handed down to main control unit, and main control unit intersects demand according to the information of cross-over configuration table
Related time-slot issues cross-over control unit；
（8）Cross-over control cell pairs carry out cross-over configuration after interface unit and user interface section corresponding time slot position, in
It is crossed in corresponding user interface section time slot after the PCM time slots data of interface unit and corresponding channel associated signalling, when passing through
Gap intersects the intersection for realizing user interface section；After carrying out time-slot cross, in the PCM time slots data and time slot TSi in time slot TSj
PCM time slot data interact, wherein,；
（9）First FPGA processing units by relay interface unit by cross-over control unit transmit come programme-controlled exchange PCM30/
32 frame data and corresponding channel associated signalling are demultiplexing as 64Kbit voices PCM time slots data and speech channel status information, and are transmitted to
User interface section；
（10）The PCM time slot data of 64Kbit voices are converted to analog voice signal, and analog voice by user interface section
Signal and speech channel status information pass phone back.
As shown in Figure 1, the programme-controlled exchange PCM time slots data in time slot TSm and the phone PCM timeslot numbers in time slot TSn
According to interacting, realize that the speech channel of phone n and phone m intersects, without manually swapping.Some can be needed people by the present invention
The work of work execute-in-place and record goes to PC operations and intelligent management, and a kind of VDF intelligent crossovers device of the invention provides public
Test mouth, the internal and external line of each speech channel can be crossed to common test mouth and be tested, not need to manually find circuit, more altogether
Facilitate line fault test operation, and can more networkings, point small ring and big ring are, it can be achieved that the circuit of First equipment can be with
It is crossed in N platform equipment.
The present invention be not limited to more than specific embodiment, these are only the present invention preferable case study on implementation, and
Not to limit the present invention, all any modification, equivalent and improvement made all within the spirits and principles of the present invention etc.,
It should be included within protection scope of the present invention.
Claims (10)
1. a kind of VDF intelligent crossovers device, it is characterised in that：Including user interface section, the first FPGA processing units, intersect control
Unit processed, the 2nd FPGA processing units, relay interface unit, main control unit；The phone is connect with user interface section, described
User interface section, the first FPGA processing units, cross-over control unit, the 2nd FPGA processing units, relay interface unit are successively
Connection, the relay interface unit are connect with programme-controlled exchange unit；The main control unit respectively with the first FPGA processing units,
2nd FPGA processing units, the connection of cross-over control unit；
The user interface section for completing the detection of phone related status information and forwarding, the analog voice signal of phone into
Row pcm encoder, which is converted into being sent to the first FPGA processing units after PCM vocoded datas, to be handled, while the first FPGA
The PCM vocoded datas that processing unit unit sends over change into analog voice signal and pass phone back；
The first FPGA processing units are for handling the PCM vocoded datas that user interface section is sent, after processing
Data transfer give cross-over control unit, while user interface list is sent to after the data processing that cross-over control unit is sent
Member；
The cross-over control unit is used for PCM time-slot cross, according to the control information of main control unit, relay interface unit when
Gap signal and corresponding channel associated signalling are crossed in corresponding user interface section time slot, and user interface is realized by time-slot cross
The intersection of unit PCM voice data and phone status information；
The 2nd FPGA processing units, which are used to being sent to relaying after the processing data information that sends cross-over control unit, to be connect
Mouth unit, while cross-over control unit is sent to after the processing data information that relay interface unit is sended over；
The relay interface unit is for completing the detection of programme-controlled exchange speech interface related status information and forwarding, program-controlled friendship
Change planes output analog voice signal carry out pcm encoder after change into PCM vocoded datas and be sent to the 2nd FPGA processing units
Processing, while the PCM vocoded datas that the 2nd FPGA processing units are sended over change into after analog signal and pass program-controlled friendship back
It changes planes；
The main control unit is used for the operation and control of the first FPGA processing units, the 2nd FPGA processing units, cross-over control unit.
2. a kind of VDF intelligent crossovers device according to claim 1, it is characterised in that：The user interface section includes
Dislodging machine testing module, ring module, power feeding module, audio transmission channel, PCM codec, line test module；It is described to pluck
On-hook detection module is in off hook state or hook state for detecting phone；The ring module refers to for receiving ring
It enables and generates bell signal and be transmitted to phone；The power feeding module is used to provide feed voltage for phone；The audio transmission leads to
Road is used for the shaping filter of analog voice signal；The PCM codec is used to the analog voice signal of phone changing into PCM languages
Sound coded data and the analog voice signal that PCM vocoded datas are changed into phone；The line test module is used to test
Combined-voltage, insulation resistance and the loop circuit of telephone wire.
3. a kind of VDF intelligent crossovers device according to claim 2, it is characterised in that：The dislodging machine testing module is led to
The voltage of A/D chip testing known resistances is crossed, loop current is calculated by Ohm's law, is judged according to the size of loop current
Pluck hook state；
The ring module includes DC-DC circuit, for generating ringing voltage；
The power feeding module generates feed voltage by DC-DC circuit；
The audio transmission channel realizes the shaping filter of voice signal by operational amplifier and low-pass filter；
PCM codec PCM coding-decoding circuits as built in user interface chip SI32260 complete analog voice signal
PCM encoding and decoding；
The line test module is completed correlation function by A/D conversion circuits and is tested.
4. a kind of VDF intelligent crossovers device according to claim 1, it is characterised in that：The relay interface unit includes
Ring detection module, feed detection module, audio transmission channel, PCM codec；The ring detection module is used to detect journey
The bell signal that controlled switching system is sent out；
The feed detection module is used to detect the feed voltage of programme-controlled exchange output：The audio transmission channel is used to simulate
The shaping filter of voice signal；
The PCM codec is used to the analog voice signal that programme-controlled exchange exports changing into PCM vocoded datas and incite somebody to action
PCM vocoded datas change into analog voice signal.
5. a kind of VDF intelligent crossovers device according to claim 4, it is characterised in that：The ring detection module passes through
A/D conversion circuits and signal processing circuit identification ringing condition；
The audio transmission channel realizes the shaping filter of voice signal by operational amplifier and low-pass filter；
PCM codec PCM coding-decoding circuits as built in trunk interface chip SI3050 realize the encoding and decoding of voice signal.
6. a kind of VDF intelligent crossovers device according to claim 1, it is characterised in that：The first FPGA processing units
Mainly include clock module, PCM multiplexings and demultiplexing module, the clock module with the 2nd FPGA processing units and communication is provided
Synchronised clock, the PCM multiplexings of the first FPGA processing units and demultiplexing module are completed multiple user interface sections and are transmitted across
30 road 64Kbit voices of Lai and status information are multiplexed into a complete 30/32 road frame of PCM and are transmitted to cross-over control list
Member, while it is transmitted to each user interface section after the 30/32 road frames of PCM that cross-over control unit sends over are demultiplexed；Institute
The 30 road 64Kbit languages that relay interface unit transmits are completed in the PCM multiplexings and demultiplexing module for stating the 2nd FPGA processing units
Sound and status information are multiplexed into a complete 30/32 road frame of PCM and are transmitted to cross-over control unit, while cross-over control
Relay interface unit is transmitted to after the 30/32 road frame demultiplexings of PCM that unit sends over.
7. a kind of VDF intelligent crossovers device according to claim 6, it is characterised in that：The clock module includes local
Clock, recovered clock and PLL chips, local clock are generated by local crystal oscillator, and PLL chips are synchronized for clock and clock source choosing
It selects.
8. a kind of VDF intelligent crossovers device according to claim 6, it is characterised in that：The PCM multiplexings and demultiplexing mould
Block is realized that multiplexing 30 road 64K voice messagings of Shi Ba are inserted respectively into 30 time slots, corresponding synchronization by FPGA internal logic circuits
Information and speech channel status information are inserted respectively into TS0 and TS16, and demultiplexing is the voice messaging for 30/32 frame being divided into 30 road 64K
It is transmitted to corresponding user interface section respectively with status information.
9. a kind of VDF intelligent crossovers device according to claim 1, it is characterised in that：The user interface section and
The communication interface of one FPGA processing units is the first pcm interface and the first SPI interface, and first pcm interface is used for transmission band
Width is the voice messaging of 64Kbit, and first SPI interface is used for transmission control and status information；The first FPGA processing is single
Member, the communication interface of the 2nd FPGA processing units and cross-over control unit are the second pcm interface and the second SPI interface, described the
Two pcm interfaces are used for transmission the voice messaging that bandwidth is 2048Mbit, and second SPI interface is used for transmission control information；Institute
The communication interface for stating relay interface unit and the 2nd FPGA processing units is third pcm interface and third SPI interface, the third
Pcm interface is used for transmission the voice messaging that bandwidth is 64Kbit, and the third SPI interface is used for transmission control and status information；
The main control unit and the communication interface of the first FPGA processing units platform and the 2nd FPGA processing units are the 4th SPI interfaces, institute
It states the 4th SPI interface and is used for transmission control information；The communication interface of the main control unit and cross-over control unit is GPMC interfaces,
The GPMC interfaces are used for transmission control and status information.
10. the cross method of any VDF intelligent crossovers device according to claim 1-9, it is characterised in that：Including
Following steps：
（1）Phone caller, receiver off-book, the off-hook detection module of user interface section detect generation off-hook shape after receiver off-book
A roads phone analog voice signal is changed into a roads 64Kbit voice PCM time slots by state information, the PCM codec of user interface section
Data；
（2）Off hook state information is multiplexed into time slot TS16 by the first FPGA processing units, and the first FPGA processing units are by a roads
64Kbit voice PCM time slot data are transmitted to cross-over control unit after being multiplexed with phone PCM30/32 frames；The phone PCM30/32
Frame includes 32 time slots, and wherein time slot TS0 is used for transmission synchronizing information, and time slot TS16 is used for transmission channel associated signalling；Remaining time slot
TSi is used to load a roads 64Kbit voice PCM time slot data, wherein,；
（3）2nd FPGA processing units by user interface section by cross-over control unit transmit come phone PCM30/32 frame numbers
64Kbit voices PCM time slots data and speech channel status information are demultiplexing as, and be transmitted to relaying and connect according to corresponding channel associated signalling
Mouth unit；
（4）64Kbit voice PCM time slot data are converted to analog voice signal, and analog voice signal by relay interface unit
Programme-controlled exchange is passed back with speech channel status information；
（5）Phone is called, and programme-controlled exchange sends ring, and the ring detection module of relay interface unit generates after detecting ring
The a roads analog voice signal that programme-controlled exchange exports is changed into a by ringing condition information, the PCM codec of relay interface unit
Road 64Kbit voice PCM time slot data；
（6）Ringing condition information is multiplexed into time slot TS16 by the 2nd FPGA processing units, and the 2nd FPGA processing units are by a roads
64Kbit voice PCM time slot data are transmitted to cross-over control unit after being multiplexed with 30/32 frames of programme-controlled exchange PCM；The program-controlled friendship
30/32 frames of PCM of changing planes include 32 time slots, and wherein time slot TS0 is used for transmission synchronizing information, and time slot TS16 is used for transmission with road
Signaling；Remaining time slot TSj is used to load a roads 64Kbit voice PCM time slot data, wherein,；Before time-slot cross is not carried out, the PCM time slots data in time slot TSj are carried out with the PCM time slots data in time slot TSi
Interaction, wherein, i=j；
（7）Modification cross-over configuration table is handed down to main control unit, and main control unit intersects demand according to the information of cross-over configuration table
Related time-slot issues cross-over control unit；
（8）Cross-over control cell pairs carry out cross-over configuration after interface unit and user interface section corresponding time slot position, in
It is crossed in corresponding user interface section time slot after the PCM time slots data of interface unit and corresponding channel associated signalling, when passing through
Gap intersects the intersection for realizing user interface section；After carrying out time-slot cross, in the PCM time slots data and time slot TSi in time slot TSj
PCM time slot data interact, wherein,；
（9）First FPGA processing units by relay interface unit by cross-over control unit transmit come programme-controlled exchange PCM30/
32 frame data and corresponding channel associated signalling are demultiplexing as 64Kbit voices PCM time slots data and speech channel status information, and are transmitted to
User interface section；
（10）The PCM time slot data of 64Kbit voices are converted to analog voice signal, and analog voice by user interface section
Signal and speech channel status information pass phone back.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113162654A (en) * | 2021-04-01 | 2021-07-23 | 中国人民解放军63629部队 | Digital multiplexer |
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| CN1175153A (en) * | 1996-08-23 | 1998-03-04 | 深圳市华为技术有限公司 | Method and equipment for transmitting main calling information on analog subscriber line |
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