CN109672574A - A kind of adaptive switching module of multilink for unmanned platform telemetry communication - Google Patents
A kind of adaptive switching module of multilink for unmanned platform telemetry communication Download PDFInfo
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- CN109672574A CN109672574A CN201910085020.6A CN201910085020A CN109672574A CN 109672574 A CN109672574 A CN 109672574A CN 201910085020 A CN201910085020 A CN 201910085020A CN 109672574 A CN109672574 A CN 109672574A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L41/00—Arrangements for maintenance, administration or management of data switching networks, e.g. of packet switching networks
- H04L41/06—Management of faults, events, alarms or notifications
- H04L41/0654—Management of faults, events, alarms or notifications using network fault recovery
- H04L41/0668—Management of faults, events, alarms or notifications using network fault recovery by dynamic selection of recovery network elements, e.g. replacement by the most appropriate element after failure
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L43/00—Arrangements for monitoring or testing data switching networks
- H04L43/08—Monitoring or testing based on specific metrics, e.g. QoS, energy consumption or environmental parameters
- H04L43/0805—Monitoring or testing based on specific metrics, e.g. QoS, energy consumption or environmental parameters by checking availability
- H04L43/0811—Monitoring or testing based on specific metrics, e.g. QoS, energy consumption or environmental parameters by checking availability by checking connectivity
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L43/00—Arrangements for monitoring or testing data switching networks
- H04L43/10—Active monitoring, e.g. heartbeat, ping or trace-route
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Abstract
The invention discloses a kind of adaptive switching modules of multilink for unmanned platform telemetry communication, comprising: dsp chip, N number of first network interface chip, N number of first network interface and N number of manual switch；Each first network interface chip and manual switch are correspondingly connected to dsp chip；The manual switch is used for transmission level signal to dsp chip；The dsp chip is stored with preset link gating priority, for sending chip selection signal to corresponding first network interface chip；First network interface chip connects one to one with the first network interface, for gating corresponding first network interface according to the chip selection signal received；Each first network interface is for connecting different communication link terminal equipment.The present invention is based on the network interface chips of dsp chip and high speed, will automatically switch and manual switching combines, and manually switching is overcome to there is the problems such as delay, serial communication rate limit.
Description
Technical field
The invention belongs to field of communication technology more particularly to a kind of multilink for unmanned platform telemetry communication are adaptive
Switching module.
Background technique
Become currently, unmanned plane, unmanned boat, unmanned vehicle platform rapid growth occur in the application of the occasions such as military, civilian
Gesture.It is remotely controlled by wireless communication, the unmanned platform of telemetering, is mainly used for executing uninteresting, dangerous and uncomfortable manned platform
The task of execution.Unmanned platform can not only undertake information after equipping advanced control system, communication system, sensory perceptual system
It collects, anti-terrorism and the military combats task such as antisubmarine, investigation and detection, precision strike, the geography that can also carry out in civilian scene are surveyed
It draws, the tasks such as modern agriculture, electric inspection process, disaster assistance.In continuous development, unmanned platform is led to using novel, reliable
Communication network technology, realization cooperate and cluster task, complete increasingly complex task type, this will civil-military inosculation develop into
Effect of crucial importance is played in journey.
Due to the interference of wireless channel environment variation and signal, fracture and the unmanned platform that may cause communication link are wireless
The failure of control, so, in order to guarantee the reliable of communication link, the equipment safety of unmanned platform is protected, ensures that unmanned platform is appointed
The realization of business, frequently with multiple communication links are carried simultaneously in Communication System Design, different links have different performances special
Point, such as rate it is high, apart from remote, anti-interference strong.
The switching of multilink is problem to be solved in practical application.If using the method for direct surveillance and switching,
Then there is the long and artificial risk for omitting switching time of operation delay.If needing to design specially using the method automatically switched
Link switching equipment and automatic switchover algorithm and software, the on off operating mode of each link of real-time judge, and need to solve
The problems such as versatility, scalability.Already present some automatic switchover design schemes use RS422 serial ports as LI(link interface),
The link communication rate of support is not high, does not adapt in current communication networks and equipment design using IP agreement as the high speed network of core
Network development communication technologies trend.
Summary of the invention
It is an object of the invention to: in order to overcome the manually switching that multilink uses in unmanned platform telemetry communication to deposit
Delay, serial communication rate limit the problems such as, a kind of adaptive switching module of multilink is provided.
The technical solution adopted by the invention is as follows:
A kind of adaptive switching module of multilink for unmanned platform telemetry communication, comprising: dsp chip, N number of first net
Mouth chip, N number of first network interface and N number of manual switch；Each first network interface chip and the corresponding company of manual switch
It is connected to dsp chip；The manual switch is used for transmission level signal to dsp chip；The dsp chip is stored with preset
Link gates priority, for sending chip selection signal to corresponding first network interface chip；First network interface chip and the first net
Mouth connects one to one, for gating corresponding first network interface according to the chip selection signal received；Each first network interface is used
In the different communication link terminal equipment of connection.
Further, each first network interface chip is equipped with the link on-off feedback unit for being connected to dsp chip；It is described
Link on-off feedback unit is used for dsp chip transmission link interrupting information.
Further, the link on-off feedback unit periodically sends the link terminal that heartbeat packet to current ink connects,
Pass through the adaptive switching module of the multilink of communication link to opposite end；The adaptive switching module of the multilink of opposite end feeds back the heart
Packet is jumped, and the adaptive switching module of local multilink is transmitted to by the link terminal；If local link on-off feedback
Member within a specified time receives the heartbeat packet of feedback, then judges current link connection；If link on-off feedback unit is referring to
The heartbeat packet for not receiving feedback in fixing time then judges that current link disconnects, and interrupts and believe to dsp chip transmission link
Breath；The heartbeat packet includes mac frame head, IP frame head portion, UDP packet header and customized business datum.
Further, the adaptive switching module of multilink for unmanned platform telemetry communication, further includes: serial ports is received
Send out chip and multi-core connector；The multi-core connector is connected to dsp chip by serial ports transceiving chip.
Further, the serial ports transceiving chip, including RS232 serial ports transceiving chip and RS422 serial ports transceiving chip；Institute
State multi-core connector, including RS232 interface and RS422 interface；The RS232 interface is connected by RS232 serial ports transceiving chip
To dsp chip；The RS422 interface is connected to dsp chip by RS422 serial ports transceiving chip.
Further, the multi-core connector further includes the JTAG emulation interface for being connected to the dsp chip.
Further, the adaptive switching module of multilink for unmanned platform telemetry communication, further includes: be connected
The second network interface and the second network interface chip；Second network interface, for connecting unmanned platform control system；The second network interface core
Piece is connected to dsp chip.
Further, the adaptive switching module of multilink for unmanned platform telemetry communication, further includes being connected to
N number of link state indicator of dsp chip, each link state indicator show corresponding link on off operating mode and link
Strobe state.
Further, the adaptive switching module of multilink for unmanned platform telemetry communication, further includes being connected
Power interface and power switch；The power interface is powered for connecting external power supply, and passes through the power switch
Carry out on/off control.
Further, the adaptive switching module of multilink for unmanned platform telemetry communication, further includes: with DSP
The EEPROM storage chip of chip connection.
In conclusion by adopting the above-described technical solution, the beneficial effects of the present invention are:
1, the present invention is based on the network interface chips of dsp chip and high speed, will automatically switch and manual switching combines, that is, support
Multilink adaptively switches, and also supports artificial manual switching, and manually switching is overcome to there is delay, serial communication rate limit
The problems such as, unmanned platform telemetry communication application of the current every profession and trade based on IP agreement high speed network can be adapted to extensively.
2, the present invention uses the link access interface based on high speed network interface, supplemented by serial ports to design, and serial ports can be used as
The spare access interface of link terminal, to meet more application scenarios.
Detailed description of the invention
In order to illustrate the technical solution of the embodiments of the present invention more clearly, below will be to needed in the embodiment attached
Figure is briefly described, it should be understood that the following drawings illustrates only certain embodiments of the present invention, therefore is not construed as pair
The restriction of range for those of ordinary skill in the art without creative efforts, can also be according to this
A little attached drawings obtain other relevant attached drawings.
Fig. 1 is the structural block diagram of the adaptive switching module of multilink of the present invention.
Fig. 2 is the application architecture figure of the adaptive switching module of multilink of the present invention.
Fig. 3 is that the link on-off feedback unit of the adaptive switching module of multilink of the present invention judges the mistake of link on off operating mode
Journey schematic diagram.
Fig. 4 is the storage chip circuit diagram of the adaptive switching module of multilink of the present invention.
Fig. 5 a and 5b are the automatic switching function circuit diagrams of the adaptive switching module of multilink of the present invention.
Fig. 6 a and 6b are the manual switching functional circuits of the adaptive switching module of multilink of the present invention.
Fig. 7 a and 7b are the serial port circuit figures of the adaptive switching module of multilink of the present invention.
Specific embodiment
In order to make the objectives, technical solutions, and advantages of the present invention clearer, with reference to the accompanying drawings and embodiments, right
The present invention is further elaborated.It should be appreciated that described herein, specific examples are only used to explain the present invention, not
For limiting the present invention, i.e., described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is logical
The component for the embodiment of the present invention being often described and illustrated herein in the accompanying drawings can be arranged and be designed with a variety of different configurations.
Therefore, claimed invention is not intended to limit to the detailed description of the embodiment of the present invention provided in the accompanying drawings below
Range, but be merely representative of selected embodiment of the invention.Based on the embodiment of the present invention, those skilled in the art are not having
Every other embodiment obtained under the premise of creative work is made, shall fall within the protection scope of the present invention.
Embodiment 1
A kind of adaptive switching module of multilink for unmanned platform telemetry communication provided by the invention, as shown in Figure 1,
It include: dsp chip, N number of first network interface chip, N number of first network interface and N number of manual switch；Each first network interface core
Piece and manual switch are correspondingly connected to dsp chip；The manual switch is used for transmission level signal to dsp chip；
The dsp chip is stored with preset link gating priority, for sending chip selection signal to corresponding first network interface chip；Institute
It states the first network interface chip to connect one to one with the first network interface, for gating corresponding first net according to the chip selection signal received
Mouthful；Each first network interface is for connecting different communication link terminal equipment.It is stored with by the dsp chip preset
Link gates priority, and gates priority according to the link and send chip selection signal to corresponding first network interface chip, thus
It realizes and automatically switches；By the dsp chip according to the level signal of the manual switch to corresponding first network interface core
Piece sends chip selection signal, to realize manual switching.
Further, each first network interface chip is equipped with the link on-off feedback unit for being connected to dsp chip；It is described
Link on-off feedback unit is used for dsp chip transmission link interrupting information；The dsp chip, for being opened according to manual switching
The link down information of the level signal of pass, the link gating priority of the first network interface chip and feedback is to corresponding first network interface
Chip sends chip selection signal.
Further, the adaptive switching module of multilink for unmanned platform telemetry communication, further includes: be connected
The second network interface and the second network interface chip；Second network interface, for connecting unmanned platform control system；The second network interface core
Piece is connected to dsp chip.
Unmanned platform telemetry communication is carried out using the adaptive switching module of multilink of the invention, its working principles are as follows:
Establish the application architecture of unmanned platform telemetry communication as shown in Figure 2.1 end of link is respectively arranged with two positions
Communication link 1, communication link 2 and communication link 3 are realized in 3 terminal of machine, 2 terminal of link and link, corresponding link terminal connection.
The adaptive switching module of multilink is respectively adopted in two positions；Each adaptive switching module of multilink passes through the first net
Mouth is connected to the link terminal of corresponding position, and passes through the second network interface connection to unmanned platform control system.
Unmanned platform control system carries out the transmission of business datum by the communication link of the second network interface and gating.With pre-
It is adaptive in the multilink for link gating priority is first set as 1 > communication link of communication link, 2 > communication link 3
After switching module powers on: first by the link on-off feedback unit of corresponding first network interface chip of each communication link to DSP
Chip feeds back the link on off operating mode of each communication link.Then priority is gated by link preset in dsp chip,
Send chip selection signal to corresponding first network interface chip of each communication link: if the link on off operating mode of communication link 1 be it is normal,
Then chip selection signal is sent to corresponding first network interface chip of communication link 1；If the link on off operating mode of communication link 1 is not just
Often, and the link on off operating mode of communication link 2 be it is normal, then to corresponding first network interface chip of communication link 2 send piece choosing letter
Number；If the link on off operating mode of communication link 1 and communication link 2 is abnormal, and the link on off operating mode of communication link 3 is positive
Often, then chip selection signal is sent to corresponding first network interface chip of communication link 3.Corresponding first network interface chip, according to connecing
The link terminal that the chip selection signal received gates corresponding first network interface connection carries out data transmit-receive.Above-mentioned link on-off feedback
Member judges the process of link on off operating mode as shown in figure 3, the link on-off feedback unit periodically sends heartbeat packet to current chain
The link terminal of road connection, passes through the adaptive switching module of the multilink of communication link to opposite end；The multilink of opposite end is certainly
It adapts to switching module and feeds back heartbeat packet, and the adaptive switching module of local multilink is transmitted to by the link terminal；If this
The link on-off feedback unit on ground within a specified time receives the heartbeat packet of feedback, then judges current link connection；If chain
Road on-off feedback unit does not receive the heartbeat packet of feedback within a specified time, then judges that current link disconnects, and to DSP core
Piece transmission link interrupting information；The heartbeat packet includes mac frame head, IP frame head portion, UDP packet header and customized business number
According to by judging the heartbeat packet in the information extractions such as mac frame head, IP frame head portion, UDP packet header transmission data and being sentenced
It is disconnected.
And for demands such as emergency communication and system testings, it can be by manual adjustment manual switch, to dsp chip
Incoming level signal；The dsp chip sends chip selection signal to corresponding first network interface chip according to the level signal of input.It is right
First network interface chip answered is carried out according to the link terminal that the chip selection signal received gates corresponding first network interface connection
Data transmit-receive, to directly manually control the gating of communication link.The priority of manual switch is higher than above-mentioned automatic switchover
Priority.
Further, spare access interface of the serial ports as link terminal is devised.It is described logical for unmanned platform observing and controlling
The adaptive switching module of the multilink of letter, further includes: serial ports transceiving chip and multi-core connector；The multi-core connector passes through string
Mouth transceiving chip is connected to dsp chip.Specifically, the serial ports transceiving chip, including RS232 serial ports transceiving chip and RS422
Serial ports transceiving chip；The multi-core connector, including RS232 interface and RS422 interface；The RS232 interface is gone here and there by RS232
Mouth transceiving chip is connected to dsp chip；The RS422 interface is connected to dsp chip by RS422 serial ports transceiving chip.Into one
Step ground, the multi-core connector further includes the JTAG emulation interface for being connected to the dsp chip, is debugged for dsp chip, just
In later maintenance and improvement.
Further, the adaptive switching module of multilink for unmanned platform telemetry communication, further includes being connected to
N number of link state indicator of dsp chip, each link state indicator show corresponding link on off operating mode and link
Strobe state is monitored convenient for instantaneous operating conditions of the user to communication system.For example, being always on table with link state indicator
Show that communication link is normal, indicates that communication link is abnormal with link state indicator extinguishing, dodged with link state indicator interval
It is bright to indicate that communication link currently gates.
Further, the adaptive switching module of multilink for unmanned platform telemetry communication, further includes being connected
Power interface and power switch；The power interface is powered for connecting external power supply, and passes through the power switch
Carry out on/off control.Further, the adaptive switching module of multilink for unmanned platform telemetry communication, is also wrapped
Working station indicator is included, for indicating current electric power thus supplied.
Feature and performance of the invention are described in further detail below in conjunction with specific embodiment:
The adaptive switching module of multilink for unmanned platform telemetry communication, including casing and setting are in the casing
Internal core circuit plate；
First network interface, the second network interface, multi-core connector, power interface, manual switch and power switch are all provided with
It sets on casing；Wherein it is possible to which manual switch, power switch, link state indicator and working station indicator are set
It sets on the front panel of casing, the first network interface, the second network interface, multi-core connector, power interface is arranged in the rear panel of casing.
The dsp chip, network interface chip and serial ports transceiving chip are arranged on core circuit plate, by core circuit plate
Upper setting connector, to be attached with corresponding interface.
The dsp chip selects TMS320C6455BCTZA, comprising: 4 EMIFA interfaces, GPIO pin, serial ports expansion connect
Mouth Peripheral and RAM memory；It is preferential that the dsp chip is stored with preset link gating in RAM memory
Grade.RAM memory is the included memory of dsp chip, is only worked after the power-up, and the data that RAM memory stores after lower electricity can be clear
It removes, is in the state being powered always to not have to DSP, as shown in figure 4, the present embodiment also passes through one 4Mbit size of setting
Memory space stores routine work program required for link gating priority and some operations.Specifically, 2 models are set
For the EEPROM storage chip of AT24CM02-SSHM-T, pass through SCL, SDA pin of serial ports expansion interface Peripheral respectively
It is attached with dsp chip, data storage and reading is carried out by I2C bus protocol.In actual use, multilink is adaptive
After switching module powers on, routine work required for the link gating priority of EEPROM storage chip storage and some operations
Program transportation to dsp chip RAM memory.
Wherein, as shown in Fig. 5 a, 5b and 6a, 6b, the dsp chip is separately connected 3 by 4 EMIFA interfaces
One network interface chip and 1 the second network interface chip；3 the first network interface chips pass through ETH1~ETH3 on the first connector J4 respectively
Pin connects 1 the first network interface, and the ETH4 pin on 1 second the first connector of network interface chip J4 connects 1 the second network interface, pipe
Foot sequence is determined according to when practical application.First network interface and the second network interface use RJ45 network interface.First network interface chip and the second network interface
Chip is all made of W5300 100-M network Ethernet chip.The link state feedback end of first network interface chip is mainly LAN_INT pipe
Foot is used for dsp chip transmission link interrupting information.
The GPIO pin of the dsp chip is connected to correspondence pin DSP_GPIO13, DSP_ of the first connector J4
GPIO14 and DSP_GPIO15, then by the other side of the first connector J4 and pin DSP_GPIO13, DSP_GPIO14 and
The corresponding pin of DSP_GPIO15 is connected to manual switch 1, manual switch 2, manual switch 3 on shell；
By dsp chip obtain manual switch to low and high level two states, thus to the first network interface chip output chip select believe
Number.
Wherein, as shown in Fig. 4 and 7a~7b, the dsp chip is separately connected 1 by serial ports expansion interface Peripheral
A RS232 chip MAX3232EUE and 1 RS422 chip MAX3490ESA；RS232 chip MAX3232EUE and RS422 chip
MAX3490ESA is connected to the correspondence pin on the second connector J3, then is connected to shell by the other side of the second connector J3
On multi-core connector, and pass through multi-core connector and realize RS232 interface, RS422 interface and a JTAG emulation interface.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all in essence of the invention
Made any modifications, equivalent replacements, and improvements etc., should all be included in the protection scope of the present invention within mind and principle.
Claims (10)
1. a kind of adaptive switching module of multilink for unmanned platform telemetry communication characterized by comprising dsp chip,
N number of first network interface chip, N number of first network interface and N number of manual switch；Each first network interface chip and manual switching are opened
Pass is correspondingly connected to dsp chip；The manual switch is used for transmission level signal to dsp chip；The dsp chip storage
There is preset link gating priority, for sending chip selection signal to corresponding first network interface chip；First network interface chip
It connects one to one with the first network interface, for gating corresponding first network interface according to the chip selection signal received；Each described
One network interface is for connecting different communication link terminal equipment.
2. the multilink adaptive switching module according to claim 1 for unmanned platform telemetry communication, feature exist
In each first network interface chip is equipped with the link on-off feedback unit for being connected to dsp chip；The link on-off feedback
Member is used for dsp chip transmission link interrupting information.
3. the multilink adaptive switching module according to claim 2 for unmanned platform telemetry communication, feature exist
In the link on-off feedback unit periodically sends the link terminal that heartbeat packet to current ink connects, and is passed by communication link
Transport to the adaptive switching module of multilink of opposite end；The adaptive switching module of the multilink of opposite end feeds back heartbeat packet, and by being somebody's turn to do
Link terminal is transmitted to the adaptive switching module of local multilink；If local link on-off feedback unit is within a specified time
The heartbeat packet of feedback is received, then judges current link connection；If link on-off feedback unit does not receive within a specified time
To the heartbeat packet of feedback, then judge that current link disconnects, and to dsp chip transmission link interrupting information；The heartbeat packet packet
Include mac frame head, IP frame head portion, UDP packet header and customized business datum.
4. the multilink adaptive switching module according to claim 1 for unmanned platform telemetry communication, feature exist
In, further includes: serial ports transceiving chip and multi-core connector；The multi-core connector is connected to DSP core by serial ports transceiving chip
Piece.
5. the multilink adaptive switching module according to claim 4 for unmanned platform telemetry communication, feature exist
In, the serial ports transceiving chip, including RS232 serial ports transceiving chip and RS422 serial ports transceiving chip；The multi-core connector,
Including RS232 interface and RS422 interface；The RS232 interface is connected to dsp chip by RS232 serial ports transceiving chip；It is described
RS422 interface is connected to dsp chip by RS422 serial ports transceiving chip.
6. the multilink adaptive switching module according to claim 4 for unmanned platform telemetry communication, feature exist
In the multi-core connector further includes the JTAG emulation interface for being connected to the dsp chip.
7. the multilink adaptive switching module according to claim 1 for unmanned platform telemetry communication, feature exist
In, further includes: the second network interface being connected and the second network interface chip；Second network interface, for connecting unmanned platform courses system
System；Second network interface chip is connected to dsp chip.
8. the multilink adaptive switching module according to claim 1 for unmanned platform telemetry communication, feature exist
In further including the N number of link state indicator for being connected to dsp chip, each link state indicator shows corresponding chain
Road on off operating mode and link strobe state.
9. the multilink adaptive switching module according to claim 1 for unmanned platform telemetry communication, feature exist
In further including the power interface and power switch being connected；The power interface is powered for connecting external power supply, and is led to
It crosses the power switch and carries out on/off control.
10. the multilink adaptive switching module according to claim 1 for unmanned platform telemetry communication, feature exist
In, further includes: the EEPROM storage chip being connect with dsp chip.
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