CN205193282U

CN205193282U - Gnss receiver

Info

Publication number: CN205193282U
Application number: CN201520971395.XU
Authority: CN
Inventors: 林钦坚; 陈伟; 宾显文; 潘久辉
Original assignee: HI-TARGET SURVEYING INSTRUMENT Co Ltd
Current assignee: HI-TARGET SURVEYING INSTRUMENT Co Ltd
Priority date: 2015-11-27
Filing date: 2015-11-27
Publication date: 2016-04-27
Anticipated expiration: 2025-11-27

Abstract

GNSS receiver includes that a GNSS receives the integrated circuit board, the 2nd GNSS receives integrated circuit board and treater, a GNSS receives the integrated circuit board and the 2nd GNSS receives integrated circuit board electric connection treater respectively, the treater is used for switching over a GNSS with predetermined duty cycle and receives integrated circuit board and the work in turn of the 2nd GNSS receipt integrated circuit board. The utility model discloses a GNSS dash receiver and the 2nd GNSS receive integrated circuit board work in turn to the usable different more excellent text of receiving integrated circuit boards resolves the frequency channel, and the whole text that improves GNSS receiver resolves the quality, and two dash receivers do not need 24 hours always continued work, but also increase of service life, reduce the fault frequency, the stability of improvement receiver.

Description

GNSS receiver

Technical field

The utility model relates to a kind of GNSS receiver.

Background technology

GNSS (GlobalNavigationSatelliteSystem, GLONASS (Global Navigation Satellite System)) make a general reference all satellite navigation systems, comprise the whole world, region with strengthen, as the Galileo in the GPS of the U.S., Muscovite Glonass, Europe, the Beidou satellite navigation system of China, and relevant enhancing system.

GNSS receiver captures the signal by the satellite to be measured selected by certain satellite altitude elevation angle by its GNSS board, and follow the tracks of the operation of these satellites, convert received satellite-signal, amplify and process, solution translates the navigation message that satellite sends.The navigation message resolving mass of GNSS reception board determines navigation and positioning accuracy and the reliability of whole receiving system.In the middle of practical application, often occur that the text resolving mass of certain some frequency range (B1 and the B2 frequency range as dipper system) of some board is poor, cannot use, and other frequency ranges of other boards (L1 and the L2 frequency range as gps system) resolved data quality is stable not, so, the receiver of single board compatible cannot choose more high quality telegraph text data.In rig-site utilization often for satellite navigation system and working frequency range in a panel region preferably, select text to resolve relatively preferably a kind of board, this just compromise at present solution, actual to resolve effect still not good.In addition, if the GNSS receiver emerged in operation fault of veneer card, Signal reception will be caused to interrupt, and make system be difficult to ensure continual and steady operation.

Utility model content

For the deficiencies in the prior art, the utility model is intended to provide a kind of GNSS receiver solved the problems of the technologies described above.

For achieving the above object, the utility model adopts following technical scheme:

A kind of GNSS receiver, it comprises, and a GNSS receives board, the 2nd GNSS receives board and processor;

One GNSS receives board and the 2nd GNSS reception board is electrically connected process device respectively; Processor is used for switching a GNSS with the work period of presetting and receives board and the alternation of the 2nd GNSS reception board.

Preferably, processor is also for when detecting that a GNSS receives board or the 2nd GNSS reception board job failure, and correspondence switches to the 2nd GNSS reception board or a GNSS dash receiver card carries out work.

Preferably, GNSS receiver also comprises radio frequency combiner, the first gain attenuator and the second gain attenuator, the input end of radio frequency combiner connects an antennal interface, first output terminal of radio frequency combiner connects a GNSS by the first gain attenuator and receives board, and the second output terminal of radio frequency combiner connects the 2nd GNSS by the second gain attenuator and receives board; First gain attenuator and the second gain attenuator also distinguish connection handling device; Processor is also for regulating the first gain attenuator and the second gain attenuator respectively according to the first yield value preset and the second yield value.

Preferably, the bandwidth of radio frequency combiner is 1200 ~ 2000MHz.

Preferably, the first gain attenuator and the second gain attenuator are digital stepping adjustable attenuator, and signal frequency range is 50 ~ 6000MHz.

Preferably, processor regulates the first gain attenuator and the second gain attenuator respectively by two Serial Peripheral Interface (SPI)s.

Preferably, antennal interface is active antenna interface, and antenna power supply VCC_RF is connected with source antenna interface by an inductance L 1, also by electric capacity C1 ground connection, is also connected an electric capacity C2 between antennal interface with radio frequency combiner.

Preferably, GNSS receiver also comprises clock distributor, the input end of clock distributor connects an interface clock signal, first output terminal of clock distributor connects a GNSS dash receiver, second output terminal of clock distributor connects the 2nd GNSS dash receiver, the control end connection handling device of clock distributor, first output terminal and second output terminal of processor also for controlling clock distributor are alternately opened.

Preferably, GNSS receiver also comprises the first decompression DC converter and the second decompression DC converter, first decompression DC converter is all connected a power input interface with the input end of the second decompression DC converter, first decompression DC converter and the output terminal of the second decompression DC converter are connected a GNSS respectively and receive board and the 2nd GNSS reception board, the equal connection handling device of Enable Pin of the first decompression DC converter and the second decompression DC converter.

Preferably, processor receives board respectively by two asynchronous serial communication interfaces and a GNSS and the 2nd GNSS dash receiver sticks into row data communication.

The beneficial effects of the utility model are at least as follows:

1, a GNSS dash receiver of the present utility model and the 2nd GNSS receive board alternation, thus the different more excellent text receiving board can be utilized to resolve frequency range, improve the overall text resolving mass of GNSS receiver, and two dash receivers do not need 24 hours always continuous firings, also can increase the service life, reduce failure-frequency, improve the stability of receiver.

2, the utility model is when there is job failure in a board wherein, and another receives the work that board can take over fault board at once, ensures that continuous firing stablized by receiver, and staff also can have the sufficient time to overhaul.

3, the utility model can share same antenna interface by adopting radio frequency combiner to make two GNSS receive board, without the need to increasing antennal interface in addition, not only reduce hardware quantity, also can utilize the outer casing mold of the receiver of original single board, without the need to die sinking again, reduce production cost, also reduce field erected complexity.

4, two GNSS of the present utility model receive board and can share same interface clock signal, without the need to increasing interface clock signal in addition, not only reduce hardware quantity, also can utilize the outer casing mold of the receiver of original single board, without the need to die sinking again, reduce production cost, also reduce field erected complexity.

5, a GNSS reception board of the present utility model and the 2nd GNSSS receive board and can share same power input interface, without the need to increasing power input interface in addition, not only reduce hardware quantity, also can utilize the outer casing mold of the receiver of original single board, without the need to die sinking again, reduce production cost, also reduce field erected complexity.In addition, adopt the first decompression DC converter and the second decompression DC converter to carry out DC decompression respectively, realize the current supply circuit independence to double reception board, when wherein power supply trouble appears in a road, can not have an impact to another road, ensure system works continuation and stability.

Accompanying drawing explanation

Fig. 1 is the circuit connection diagram of the better embodiment of the utility model GNSS receiver.

Embodiment

Below in conjunction with accompanying drawing and embodiment, the utility model is described further:

Refer to Fig. 1, the utility model relates to a kind of GNSS receiver, and its better embodiment comprises a GNSS and receives board, the 2nd GNSS reception board and processor.

Such as, under default conditions, a GNSS reception board first works a period of time, switch to the 2nd GNSS to receive board work afterwards, so, a GNSS dash receiver and the 2nd GNSS receive board alternation, thus the different more excellent text receiving board can be utilized to resolve frequency range, improve the overall text resolving mass of GNSS receiver, and two dash receivers do not need 24 hours always continuous firings, can increase the service life yet, reduce failure-frequency, improve the stability of receiver.

In the present embodiment, processor is also for when detecting that a GNSS receives board or the 2nd GNSS reception board job failure, and correspondence switches to the 2nd GNSS reception board or a GNSS dash receiver card carries out work.So, when job failure appears in a board wherein, another receives the work that board can take over fault board at once, ensures that continuous firing stablized by receiver, and staff also can have the sufficient time to overhaul.

The text that processor and a GNSS receive Data communication principle between board or the 2nd GNSS dash receiver, a GNSS receives board or the 2nd GNSS dash receiver resolves principle can be known by prior art, repeats no more.

Preferably, it is that GPS receives board that a GNSS receives board, and it is that Beidou satellite navigation receives board, to resolve advantage in conjunction with different system board that the 2nd GNSS receives board.In other embodiments, a GNSS dash receiver and the 2nd GNSS receive the reception board that board also can be same navigational system.

In the present embodiment, GNSS receiver also comprises radio frequency combiner, the first gain attenuator and the second gain attenuator, the input end of radio frequency combiner connects an antennal interface, first output terminal of radio frequency combiner connects a GNSS by the first gain attenuator and receives board, and the second output terminal of radio frequency combiner connects the 2nd GNSS by the second gain attenuator and receives board.First gain attenuator and the second gain attenuator also distinguish connection handling device; Processor, also for regulating the first gain attenuator and the second gain attenuator respectively according to the first yield value preset and the second yield value, decays to respectively by the first gain attenuator and the second gain attenuator the signal that an applicable GNSS receives board and the process of the 2nd GNSS reception board to make radiofrequency signal.

The utility model can share same antenna interface by adopting radio frequency combiner to make two GNSS receive board, without the need to increasing antennal interface in addition, not only reduce hardware quantity, also can utilize the outer casing mold of the receiver of original single board, without the need to die sinking again, reduce production cost, also reduce field erected complexity.

Preferably, the bandwidth of radio frequency combiner is 1200 ~ 2000MHz, to meet all satellite constellation band operation frequency ranges.

Preferably, the first gain attenuator and the second gain attenuator are digital stepping adjustable attenuator, and signal frequency range is 50 ~ 6000MHz, support the signal frequency range of prime power combiner device input, total adjustable gain scope 31dB, stepping accuracy 1dB.

Preferably, processor controls the first gain attenuator and the second gain attenuator respectively by two Serial Peripheral Interface (SPI)s.

Preferably, antennal interface is active antenna interface, and antenna power supply VCC_RF is connected with source antenna interface by an inductance L 1, also by electric capacity C1 ground connection, is also connected an electric capacity C2 between antennal interface with radio frequency combiner.Wherein, inductance L 1 is for realizing isolation effect, and electric capacity C1 is used for decoupling, thus absorbs power supply noise, promotes power good.Electric capacity C2 plays AC coupling effect, inputs to radio frequency combiner to avoid supply voltage.

In the present embodiment, GNSS receiver also comprises clock distributor, the input end of clock distributor connects an interface clock signal, first output terminal of clock distributor connects a GNSS dash receiver, second output terminal of clock distributor connects the 2nd GNSS dash receiver, the control end connection handling device of clock distributor, first output terminal and second output terminal of processor also for controlling clock distributor are alternately opened.So, two GNSS receive board and can share same interface clock signal, without the need to increasing interface clock signal in addition, not only reduce hardware quantity, also can utilize the outer casing mold of the receiver of original single board, without the need to die sinking again, reduce production cost, also reduce field erected complexity.

Preferably, the clock frequency 10 ~ 52MHz of clock distributor, the driving element isolation of two-way output terminal of clock, reduce connect mutual interference between peripheral hardware.

In the present embodiment, GNSS receiver also comprises the first decompression DC converter and the second decompression DC converter, first decompression DC converter is all connected a power input interface with the input end of the second decompression DC converter, first decompression DC converter and the output terminal of the second decompression DC converter are connected a GNSS respectively and receive board and the 2nd GNSS reception board, the equal connection handling device of Enable Pin of the first decompression DC converter and the second decompression DC converter.So, one GNSS receives board and the 2nd GNSS reception board can share same power input interface, without the need to increasing power input interface in addition, not only reduce hardware quantity, also can utilize the outer casing mold of the receiver of original single board, without the need to die sinking again, reduce production cost, also reduce field erected complexity.In addition, adopt the first decompression DC converter and the second decompression DC converter to carry out DC decompression respectively, realize the current supply circuit independence to double reception board, when wherein power supply trouble appears in a road, can not have an impact to another road, ensure system works continuation and stability.

Preferably, processor receives board respectively by two asynchronous serial communication interfaces and a GNSS and the 2nd GNSS dash receiver sticks into row data communication, to realize the independent glitch-free effect of data link.

" electric connection " that relate in the utility model there is electric signal transmission between finger element, be not limited to direct connection physically, such as, can be indirectly connected by wire, also can, by other elements as resistance, electric capacity connect indirectly, also can be directly connected by scolding tin or plug-in mounting.

" first ", " second " that relate in the utility model etc. only play the effect distinguishing different parts, do not play differentiation order.

For a person skilled in the art, according to technical scheme described above and design, other various corresponding change and distortion can be made, and all these change and distortion all should belong within the protection domain of the utility model claim.

Claims

1. a GNSS receiver, is characterized in that: it comprises, and a GNSS receives board, the 2nd GNSS receives board and processor;

One GNSS receives board and the 2nd GNSS reception board is electrically connected process device respectively;

Processor is used for switching a GNSS with the work period of presetting and receives board and the alternation of the 2nd GNSS reception board.

2. GNSS receiver as claimed in claim 1, it is characterized in that: processor is also for when detecting that a GNSS receives board or the 2nd GNSS reception board job failure, and correspondence switches to the 2nd GNSS reception board or a GNSS dash receiver card carries out work.

3. GNSS receiver as claimed in claim 1, it is characterized in that: GNSS receiver also comprises radio frequency combiner, the first gain attenuator and the second gain attenuator, the input end of radio frequency combiner connects an antennal interface, first output terminal of radio frequency combiner connects a GNSS by the first gain attenuator and receives board, and the second output terminal of radio frequency combiner connects the 2nd GNSS by the second gain attenuator and receives board; First gain attenuator and the second gain attenuator also distinguish connection handling device; Processor is also for regulating the first gain attenuator and the second gain attenuator respectively according to the first yield value preset and the second yield value.

4. GNSS receiver as claimed in claim 3, is characterized in that: the bandwidth of radio frequency combiner is 1200 ~ 2000MHz.

5. GNSS receiver as claimed in claim 3, it is characterized in that: the first gain attenuator and the second gain attenuator are digital stepping adjustable attenuator, signal frequency range is 50 ~ 6000MHz.

6. GNSS receiver as claimed in claim 3, is characterized in that: processor regulates the first gain attenuator and the second gain attenuator respectively by two Serial Peripheral Interface (SPI)s.

7. GNSS receiver as claimed in claim 3, it is characterized in that: antennal interface is active antenna interface, antenna power supply VCC_RF is connected with source antenna interface by an inductance L 1, also by electric capacity C1 ground connection, is also connected an electric capacity C2 between antennal interface with radio frequency combiner.

8. the GNSS receiver according to any one of claim 1 to 7, it is characterized in that: GNSS receiver also comprises clock distributor, the input end of clock distributor connects an interface clock signal, first output terminal of clock distributor connects a GNSS dash receiver, second output terminal of clock distributor connects the 2nd GNSS dash receiver, the control end connection handling device of clock distributor, first output terminal and second output terminal of processor also for controlling clock distributor are alternately opened.

9. GNSS receiver as claimed in claim 1, it is characterized in that: GNSS receiver also comprises the first decompression DC converter and the second decompression DC converter, first decompression DC converter is all connected a power input interface with the input end of the second decompression DC converter, first decompression DC converter and the output terminal of the second decompression DC converter are connected a GNSS respectively and receive board and the 2nd GNSS reception board, the equal connection handling device of Enable Pin of the first decompression DC converter and the second decompression DC converter.

10. GNSS receiver as claimed in claim 1, is characterized in that: processor receives board respectively by two asynchronous serial communication interfaces and a GNSS and the 2nd GNSS dash receiver sticks into row data communication.