CN106953679A - A kind of vehicle-mounted Big Dipper short message satellite-signal communicator - Google Patents
A kind of vehicle-mounted Big Dipper short message satellite-signal communicator Download PDFInfo
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- CN106953679A CN106953679A CN201610007241.8A CN201610007241A CN106953679A CN 106953679 A CN106953679 A CN 106953679A CN 201610007241 A CN201610007241 A CN 201610007241A CN 106953679 A CN106953679 A CN 106953679A
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- frequency point
- short message
- frequency
- receiving
- handheld device
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/14—Relay systems
- H04B7/15—Active relay systems
- H04B7/185—Space-based or airborne stations; Stations for satellite systems
- H04B7/1851—Systems using a satellite or space-based relay
- H04B7/18517—Transmission equipment in earth stations
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/14—Relay systems
- H04B7/15—Active relay systems
- H04B7/185—Space-based or airborne stations; Stations for satellite systems
- H04B7/1851—Systems using a satellite or space-based relay
- H04B7/18519—Operations control, administration or maintenance
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Astronomy & Astrophysics (AREA)
- Aviation & Aerospace Engineering (AREA)
- General Physics & Mathematics (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Radio Relay Systems (AREA)
Abstract
The invention provides a kind of vehicle-mounted Big Dipper short message satellite-signal communicator, the device includes：Handheld device and the signal repeater being arranged on outside car；Signal repeater also includes S frequencies Transmit-Receive Unit and L frequency Transmit-Receive Units；Wherein, S frequencies Transmit-Receive Unit, for receiving the S frequency short message message of big-dipper satellite transmission, and is forwarded to handheld device；L frequency Transmit-Receive Units, for receiving the L frequency short message message of handheld device transmission, and are forwarded to big-dipper satellite；Handheld device, receives and dispatches short message message, and show short message message for control signal transponder.The vehicle-mounted Big Dipper short message satellite-signal communicator that the present invention is provided is by using handheld device control signal transponder, realize and short message message is unrestrictedly received and dispatched outside in-car car, and handheld device is light compact, is not only user-friendly to, the maintenance and management in later stage is also easy to.
Description
Technical Field
The invention relates to the technical field of vehicle-mounted positioning signal control, in particular to a vehicle-mounted Beidou short message satellite signal communication device.
Background
The Beidou second satellite navigation system (BD2, Beidou-2) is a global satellite navigation system independently developed in China. By the end of 2012, 14 satellites currently serve the asia-pacific region, including 5 GEO satellites, 5 IGSO satellites, and 4 MEO satellites. Wherein, the 5 GEO satellites of big dipper two numbers provide the short message communication function, and other satellites provide the navigation positioning function.
The No. 5 Beidou GEOs are synchronous orbit satellites, belong to geostationary satellites and are distributed on the equator. Wherein 1 satellite is distributed in the south, 2 satellites are distributed in the east, and 2 satellites are distributed in the west, which puts directional requirements on the use of the terminal, especially the use of a vehicle-mounted terminal. The existing vehicle-mounted terminal adopts the solution that a Beidou second vehicle-mounted antenna is installed on the roof of a vehicle, and a display control unit is installed in the vehicle for matching use.
However, the conventional vehicle-mounted terminal only supports short message communication through a display control unit installed in the vehicle, cannot be used outside the vehicle, and is inconvenient for later maintenance and management.
Disclosure of Invention
The technical problem to be solved by the invention is as follows: the problem of current vehicle terminal can't carry out short message communication outside the car, and be not convenient for the maintenance and the management in later stage is solved.
In order to achieve the above object, the present invention provides a vehicle-mounted Beidou short message satellite signal communication device, including: the device comprises a handheld device and a signal repeater arranged outside the vehicle; the signal repeater also comprises an S frequency point transceiving unit and an L frequency point transceiving unit;
wherein,
the S frequency point receiving and sending unit is used for receiving the S frequency point short message sent by the Beidou satellite and forwarding the S frequency point short message to the handheld device;
the L frequency point receiving and sending unit is used for receiving the L frequency point short message sent by the handheld device and forwarding the L frequency point short message to the Beidou satellite;
and the handheld device is used for controlling the signal transponder to receive and transmit short message messages and displaying the short message messages.
Preferably, the S-frequency point transceiver unit includes: an S frequency point receiving antenna, an S frequency point low noise amplifier and an S frequency point transmitting antenna,
wherein,
the S frequency point receiving antenna is used for receiving the S frequency point short message sent by the Beidou satellite;
the S frequency point low noise amplifier is used for amplifying the S frequency point short message;
and the S frequency point transmitting antenna is used for forwarding the amplified S frequency point short message to the handheld device.
Preferably, the S-frequency low noise amplifier includes a three-stage amplifying circuit and a three-stage filtering circuit.
Preferably, the L-frequency point transceiver unit includes: the device comprises an L frequency point receiving antenna, an L frequency point power amplifier and an L frequency point transmitting antenna;
wherein,
the L frequency point receiving antenna is used for receiving the L frequency point short message sent by the handheld device;
the L frequency point power amplifier is used for amplifying the power of the L frequency point short message;
and the L frequency point transmitting antenna is used for transmitting the amplified L frequency point short message to the Beidou satellite.
Preferably, the energy range of the L frequency point short message amplified by the L frequency point power amplifier is 3-30 w.
Preferably, the L-frequency power amplifier amplifies the energy of the L-frequency short message to 10 watts.
Preferably, the L-frequency power amplifier includes a filter circuit and a power amplifier circuit.
Preferably, the communication device further comprises a power supply unit arranged outside the vehicle; the power supply unit comprises a simulation low-noise power supply module and a power amplification power supply module;
wherein,
the analog low-noise power supply module is used for providing electric energy for the S-frequency point low-noise amplifier;
and the power amplification power supply module is used for providing electric energy for the L frequency point power amplifier.
Preferably, the analog low-noise power supply module provides 3.3V voltage for the S-frequency point low-noise amplifier, and the power amplification power supply module provides 10V voltage for the L-frequency point power amplifier.
Preferably, the analog low-noise power supply module is of a two-stage circuit structure and is respectively a DC-DC circuit and an LDO circuit which are connected in series.
The invention provides a vehicle-mounted Beidou short message satellite signal communication device, which utilizes a handheld device to control a signal transponder, realizes unlimited short message receiving and sending outside and inside a vehicle, and the handheld device is light and small, thereby not only being convenient for a user to use, but also being easy for later maintenance and management.
Drawings
Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The drawings are only for purposes of illustrating the preferred embodiments and are not to be construed as limiting the invention. Also, like reference numerals are used to refer to like parts throughout the drawings. In the drawings:
FIG. 1 is a schematic structural diagram of a vehicle-mounted Beidou short message satellite signal communication device provided by the invention;
fig. 2 is a schematic diagram of an S-frequency transceiving unit structure according to the present invention;
FIG. 3 is a schematic diagram of a S-frequency point low noise amplifier provided by the present invention;
fig. 4 is a schematic structural diagram of an L-frequency transceiving unit provided in the present invention;
fig. 5 is a schematic structural diagram of an L-frequency point power amplifier provided in the present invention;
FIG. 6 is a schematic diagram of a power supply unit according to the present invention;
fig. 7 is a schematic diagram of a working flow of the vehicle-mounted Beidou short message satellite signal communication device provided by the invention.
Detailed Description
The following detailed description of embodiments of the present invention is provided in connection with the accompanying drawings and examples. The following examples are intended to illustrate the invention but are not intended to limit the scope of the invention.
The invention provides a vehicle-mounted Beidou short message satellite signal communication device, which comprises: the device comprises a handheld device and a signal repeater arranged outside the vehicle; the signal repeater also comprises an S frequency point transceiving unit and an L frequency point transceiving unit; the S frequency point receiving and sending unit is used for receiving the S frequency point short message sent by the Beidou satellite and forwarding the S frequency point short message to the handheld equipment; the L frequency point receiving and sending unit is used for receiving the L frequency point short message sent by the handheld equipment and forwarding the L frequency point short message to the Beidou satellite; and the handheld equipment is used for controlling the signal transponder to receive and transmit the short message and display the short message.
The vehicle-mounted Beidou short message satellite signal communication device provided by the invention utilizes the handheld equipment to control the signal transponder, realizes unlimited short message receiving and sending outside the vehicle, and has the advantages of portability and small size, convenience for users to use and easiness for later maintenance and management.
Referring to fig. 1, fig. 1 shows a vehicle-mounted beidou short message satellite signal communication device provided by the invention, which comprises: the device comprises a handheld device 1 and a signal transponder 2 arranged outside a vehicle; the signal repeater further includes an S-frequency point transceiver unit 21 and an L-frequency point transceiver unit 22. The S frequency point receiving and sending unit 21 is used for receiving an S frequency point short message sent by the Beidou satellite and forwarding the S frequency point short message to the handheld device 1; the L frequency point receiving and sending unit 22 is used for receiving the L frequency point short message sent by the handheld device 1 and forwarding the L frequency point short message to the Beidou satellite; the handheld device 1 is used for controlling the signal repeater to receive and transmit the short message and display the short message.
As shown in fig. 2, the S-frequency transceiver unit 21 in the apparatus includes: an S-frequency point receiving antenna 211, an S-frequency point low noise amplifier 212, and an S-frequency point transmitting antenna 213. The S frequency point receiving antenna 211 is arranged outside the vehicle, preferably on the roof of the vehicle, and is used for receiving S frequency point short message messages sent by the Beidou satellite. The S-frequency point low noise amplifier 212 is configured to amplify the S-frequency point short message, and preferably includes a three-stage amplification circuit and a three-stage filter circuit as shown in fig. 3, where the first-stage gain is about 16dB, the second-stage gain is about 18dB, the third-stage gain is about 18dB, the filter loss is eliminated, and the total gain of the three-stage amplification circuit is about 35 dB. The S-frequency point transmitting antenna 213 is disposed in the vehicle, and is configured to forward the amplified S-frequency point short message to the handheld device 1.
As shown in fig. 4, the L-frequency transceiver unit 22 in the apparatus includes: an L-frequency receiving antenna 221, an L-frequency power amplifier 222, and an L-frequency transmitting antenna 223. The L-frequency receiving antenna 221 is disposed outside the vehicle, preferably on the roof of the vehicle, and is configured to receive the L-frequency short message sent by the handheld device 1. The L-frequency power amplifier 222 is configured to amplify the power of the L-frequency short message. The L frequency point transmitting antenna 223 is arranged in the vehicle and used for transmitting the L frequency point short message after power amplification to the Beidou satellite.
As shown in fig. 5, the L-frequency power amplifier 222 mainly includes a filter circuit and a power amplifier circuit. According to the requirement of the Beidou satellite, the inbound power of the L-frequency point signal needs to reach an energy value of about 3-30 watts, so that the energy range of the L-frequency point power amplifier for amplifying the L-frequency point short message is 3-30 watts. Preferably, the L-frequency power amplifier amplifies the energy of the L-frequency short message to 10 watts, and sets the amplified energy value to 10 watts, which reduces the requirement on the L-frequency power amplifier 222 and also meets the condition of the beidou satellite signal inbound power.
In order to supply the signal transponder 2 outside the vehicle with electrical energy, the device according to the invention further comprises a power supply unit 3 arranged outside the vehicle. As shown in fig. 6, the power supply unit 3 mainly includes an analog low-noise power supply module 31 and a power amplification power supply module 32. The analog low-noise power supply module 31 is configured to provide power to the S-frequency point low-noise amplifier 212. The power amplification power supply module 32 is used for supplying electric energy to the L-frequency point power amplifier 222.
Specifically, the power amplification power supply module 32 adopts a DC-DC circuit, and is configured to perform burst-type large-current power supply for the L-frequency point power amplifier 222, and provide 10V voltage for the L-frequency point power amplifier 222. Preferably, in order to improve the conversion efficiency of the power supply and ensure the low noise characteristic of the voltage, the analog low noise power supply module 31 adopts a two-stage circuit structure, and firstly, the voltage is reduced to 5V by using a DC-DC circuit, and then reduced to 3.3V by using an LDO, so as to provide 3.3V for the S-frequency point low noise amplifier 212.
The working process of the vehicle-mounted Beidou short message satellite signal communication device provided by the invention is shown in FIG. 7, and the working process comprises the following steps: the handheld device 1 controls the signal repeater 2 to start receiving signals; an S frequency point receiving and sending unit arranged outside the vehicle starts to receive S frequency point short message messages sent by the Beidou satellite after receiving the control instruction, and the S frequency point short message messages are amplified and sent to the handheld device 1; the handheld device 1 can display the received S-frequency short message and reply to the message, wherein the reply message is sent in an L-frequency short message manner; and the L frequency point receiving and sending unit arranged outside the vehicle amplifies the power after receiving the L frequency point short message sent by the handheld device 1, and finally forwards the L frequency point short message to the Beidou satellite to complete the whole short message communication process.
It can be understood that, in the whole communication process, the handheld device 1 does not need to limit the use place, can be located in the vehicle for receiving and sending messages and can also be located outside the vehicle for receiving and sending messages, so that the use convenience of a user is greatly improved, and the use efficiency of the device is also improved. In addition, the handheld device 1 is light and small, later maintenance or replacement is easy, the phenomenon that the whole device cannot be used due to the fact that the display and control unit in the vehicle is damaged in the prior art is avoided, and the service life of the whole device is prolonged.
In conclusion, the vehicle-mounted Beidou short message satellite signal communication device provided by the invention realizes unlimited short message receiving and sending outside and inside the vehicle by using the handheld device to control the signal transponder, and the handheld device is light and small, thereby not only being convenient for a user to use, but also being easy for later maintenance and management.
The above embodiments are only for illustrating the invention and are not to be construed as limiting the invention, and those skilled in the art can make various changes and modifications without departing from the spirit and scope of the invention, therefore, all equivalent technical solutions also belong to the scope of the invention, and the scope of the invention is defined by the claims.
Claims (10)
1. The utility model provides a vehicle-mounted big dipper short message satellite signal communication device which characterized in that includes: the device comprises a handheld device and a signal repeater arranged outside the vehicle; the signal repeater also comprises an S frequency point transceiving unit and an L frequency point transceiving unit;
wherein,
the S frequency point receiving and sending unit is used for receiving the S frequency point short message sent by the Beidou satellite and forwarding the S frequency point short message to the handheld device;
the L frequency point receiving and sending unit is used for receiving the L frequency point short message sent by the handheld device and forwarding the L frequency point short message to the Beidou satellite;
and the handheld device is used for controlling the signal transponder to receive and transmit short message messages and displaying the short message messages.
2. The communication apparatus of claim 1, wherein the S-frequency transceiver unit comprises: an S frequency point receiving antenna, an S frequency point low noise amplifier and an S frequency point transmitting antenna,
wherein,
the S frequency point receiving antenna is used for receiving the S frequency point short message sent by the Beidou satellite;
the S frequency point low noise amplifier is used for amplifying the S frequency point short message;
and the S frequency point transmitting antenna is used for forwarding the amplified S frequency point short message to the handheld device.
3. The communication apparatus according to claim 2, wherein the S-bin low noise amplifier includes a three-stage amplification circuit and a three-stage filter circuit.
4. The communication apparatus according to claim 1, wherein the L-frequency point transceiver unit comprises: the device comprises an L frequency point receiving antenna, an L frequency point power amplifier and an L frequency point transmitting antenna;
wherein,
the L frequency point receiving antenna is used for receiving the L frequency point short message sent by the handheld device;
the L frequency point power amplifier is used for amplifying the power of the L frequency point short message;
and the L frequency point transmitting antenna is used for transmitting the amplified L frequency point short message to the Beidou satellite.
5. The communication device according to claim 4, wherein the L-frequency point power amplifier amplifies the L-frequency point short message with energy ranging from 3 watts to 30 watts.
6. The communication device according to claim 4, wherein the L-frequency power amplifier amplifies the energy of the L-frequency short message to 10W.
7. The communication device as claimed in claim 4, wherein the L-bin power amplifier comprises a filter circuit and a power amplifier circuit.
8. The communication device according to claim 1, further comprising a power supply unit provided outside the vehicle; the power supply unit comprises a simulation low-noise power supply module and a power amplification power supply module;
wherein,
the analog low-noise power supply module is used for providing electric energy for the S-frequency point low-noise amplifier;
and the power amplification power supply module is used for providing electric energy for the L frequency point power amplifier.
9. The communication device according to claim 8, wherein the analog low noise power supply module provides 3.3V for the S-frequency point low noise amplifier, and the power amplification power supply module provides 10V for the L-frequency point power amplifier.
10. The communication apparatus of claim 8, wherein the analog low noise power module has a two-stage circuit structure, which is a series-connected DC-DC circuit and an LDO circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610007241.8A CN106953679A (en) | 2016-01-06 | 2016-01-06 | A kind of vehicle-mounted Big Dipper short message satellite-signal communicator |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610007241.8A CN106953679A (en) | 2016-01-06 | 2016-01-06 | A kind of vehicle-mounted Big Dipper short message satellite-signal communicator |
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| CN106953679A true CN106953679A (en) | 2017-07-14 |
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| CN201610007241.8A Pending CN106953679A (en) | 2016-01-06 | 2016-01-06 | A kind of vehicle-mounted Big Dipper short message satellite-signal communicator |
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Cited By (2)
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| CN111356095A (en) * | 2020-02-04 | 2020-06-30 | 北京天海达科技有限公司 | Beidou short message sharing terminal and Beidou short message receiving and sending method |
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