Satellite vehicle-mounted terminal

Abstract

The utility model discloses a satellite vehicle-mounted terminal, and belongs to the field of satellite vehicle-mounted technologies. The machine shell is connected with the main board, the main board is respectively connected with the SIM card board, the private network module, the RFID module and the RTK module, the machine shell is connected with the vehicle-mounted antenna nut, the vehicle-mounted antenna nut is connected with the radio frequency line, the private network module is connected with the USB port through the MINIPCI-E interface, the RFID module is connected with the serial port 0, the RTK module is connected with the serial port 1, the RTK module is connected with the RTK small board, and the back face of the RTK small board is grounded through the conductive sponge and a middle frame of the machine shell. The RTK small board is fixed on a middle frame of the machine shell through screws, five pins are reserved on the main board and connected to a serial port of the SIM card board through a fly line or an FPC, the RTK small board is connected with the antenna pedestal, and the antenna pedestal is connected with a radio frequency line and is connected with an external vehicle-mounted antenna through radio frequency line emission.

Description

Technical Field

[0001] The utility model belongs to the technical field of satellite vehicle-mounted terminals and relates to a satellite vehicle-mounted terminal. Background Art

[0002] The positioning signal of the vehicle terminal is poor, and the antenna is located inside the machine; the positioning accuracy is poor, only at the meter level; there are few customized functions or other functions cannot be customized, and the development cycle of customized functions is long. In life, when encountering positioning problems, the navigation system is not enough to meet the high-precision positioning required in special fields. This is mainly because the global satellite navigation system relies on more than 4 satellites to obtain the positioning accuracy, latitude, altitude and time, and there are many errors in the satellite positioning process. In addition to the errors caused by satellite signals penetrating the ionosphere and troposphere, there are also errors such as channel errors, satellite clock errors, ephemeris errors, and internal noise errors. These errors are nothing in the field of life, but in special fields, a slight difference can lead to a thousand miles of error. Only centimeter-level accuracy can meet the accuracy requirements of special fields. Unlike satellite navigation systems, RTK positioning is not only used for satellites, but also for base stations and mobile stations. Therefore, RTK is an order of magnitude higher in accuracy than satellite navigation systems, reaching centimeter level. Utility Model Content

[0003] The utility model solves the technical problems existing in the prior art, thereby providing a satellite vehicle-mounted terminal.

[0004] The existing technical problems are solved by the following technical solutions: a satellite vehicle-mounted terminal, wherein a casing is connected to a mainboard, the mainboard is respectively connected to a SIM card board, a private network module, an RFID module and an RTK module, the casing is connected to a vehicle-mounted antenna nut, the vehicle-mounted antenna nut is connected to a radio frequency line, the private network module is connected to a USB port through a MINIPCI-E interface, the RFID module is connected to serial port 0, the RTK module is connected to serial port 1, the RTK module is connected to an RTK board, the back of the RTK board is grounded to a middle frame of the casing through a conductive sponge, the RTK board is fixed to the middle frame of the casing through screws, five pins are reserved on the mainboard and connected to the serial port of the SIM card board through flying wires or FPCs, the RTK board is connected to an antenna seat, the antenna seat is connected to a radio frequency line, and is connected to an external vehicle-mounted antenna through radio frequency line transmission.

[0005] The main board is connected to the hub and the level conversion chip respectively. The hub is connected to the USB port. The USB port is connected to the private network module through data transmission. The level conversion chip is connected to serial port 0 and serial port 1 respectively. Serial port 0 is connected to the RFID module through data transmission, and serial port 1 is connected to the RTK module through data transmission.

[0006] The advantages of the utility model are: the passive antenna has high gain, wide beam, good reception effect of low elevation angle signals, and can still receive satellites normally in an environment with severe obstruction. The passive antenna has a wide working frequency band and can well support multi-system and multi-frequency operations, especially the B3 frequency of global networking, which greatly improves the system stability. It has a small size and light weight, a reliable structure, and a protection level of IP67, which greatly improves the overall reliability of the drone / vehicle, such as waterproofing, impact, etc. The antenna has high out-of-band suppression, which can effectively avoid signal interference from communication base stations and other signals that cause system instability.

[0007] The beneficial effects of the utility model: it overcomes the problems of poor positioning signal, low accuracy and slow function development of the vehicle-mounted terminal; the structural design is reasonable, and sufficient space is reserved for customer customized modularization; the multi-mode integrated satellite vehicle-mounted terminal has sufficient serial ports, USB interfaces, etc. for modular function development. BRIEF DESCRIPTION OF THE DRAWINGS

[0008] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the following will briefly introduce the drawings required for the embodiments or the prior art descriptions. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work. As shown in the figure:

[0009] Figure 1 It is a schematic diagram of the internal structure of the utility model.

[0010] Figure 2 This is a schematic diagram of the appearance structure of the utility model.

[0011] Figure 3 A diagram of the internal structure of the present invention.

[0012] Figure 4 Figure 2 of the internal structure of the present invention. DETAILED DESCRIPTION

[0013] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0014] Example 1: Figure 1 , Figure 2 , Figure 3 and Figure 4As shown, a satellite vehicle terminal includes a SIM card board 1, a compatible private network module 2, an RFID module 3 and an RTK module 4, an antenna seat 5, a mainboard 6, a vehicle antenna nut 7, a radio frequency line 8, a housing 9, a serial port 10 leading to five pins, a serial port 0 11, a MINIPCI-E interface 12 and a USB port 13.

[0015] The housing 9 is connected to the main board 6, and the main board 6 is respectively connected to the SIM card board 1, the private network module 2, the RFID module 3 and the RTK module 4. The housing 9 is connected to the vehicle antenna nut 7, and the vehicle antenna nut 7 is connected to the radio frequency line 8. The private network module 2 is connected to the USB port 13 through the MINIPCI-E interface 12 to realize data transmission, and the RFID module 3 realizes data transmission through the 0 serial port 11; the RTK module 4 realizes data transmission through the 1 serial port 10, and the data do not interfere with each other.

[0016] The RTK module 4 is connected to the RTK board. The back of the RTK board is grounded to the middle frame of the case 9 through a conductive sponge. The RTK board is fixed to the middle frame of the case 9 by screws. The main board 6 reserves five pins, which are connected to the serial port of the SIM card board 1 through flying wires or FPC to achieve data transmission; the RTK board is connected to the antenna seat 5, and the antenna seat 5 is connected to the RF line 8, which is transmitted through the RF line 8 and connected to the external vehicle antenna. The RTK module 4 is powered on and off through the APP, and the serial port 10 transmits data.

[0017] like Figure 3 As shown, the mainboard is respectively connected to the hub HUB and the level conversion chip, the hub HUB is connected to the USB port, the USB port is connected to the private network module through data transmission, the level conversion chip is respectively connected to serial port 0 and serial port 1, serial port 0 is connected to the RFID module through data transmission, and serial port 1 is connected to the RTK module through data transmission.

[0018] like Figure 4 As shown, the RTK module board is connected to the RF radio frequency line, and the RF radio frequency line is connected to the RTK antenna through the vehicle-mounted antenna nut.

[0019] SIM card board 1: Shenzhen Aoyou Communication Equipment Co., Ltd., compatible private network module 2: Beijing ZTE Gundam Communication Technology Co., Ltd., RFID module 3: Shenzhen Wanquan Intelligent Technology Co., Ltd., RTK module 4: Qianxun Location Network Co., Ltd.

[0020] Configure the module serial port to the APP, and the SDK obtains the module data; the APP obtains the approximate location and uploads it to the differential service platform, and the differential service platform sends the differential data to the APP; the APP gives the differential data to the module, and replaces the module positioning information after RTK solution to the Android system to achieve high-precision positioning.

[0021] APP: Mobile software, mainly refers to software installed on smart phones, which improves the deficiencies and personalization of the original system. It is the main means to improve the functions of mobile phones and provide users with a richer user experience.

[0022] SDK: The full name is Software Development Kit, which is a software development kit. It refers to a collection of development tools used by software engineers to build application software for specific software packages, software frameworks, hardware platforms, operating systems, etc. In a broad sense, it refers to a collection of related documents, examples and tools that assist in the development of a certain type of software.

[0023] Example 2: Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, a satellite vehicle-mounted terminal adds an RTK positioning module on the basis of an existing vehicle-mounted terminal to achieve high-precision positioning function, and realizes centimeter-level positioning in scenarios such as patrol, disaster monitoring, and public security monitoring; the antenna is external and can be fixed to the roof by magnets, so the signal is more stable, and there is no need to worry about the signal being sometimes available when the antenna is built-in; the structural space is larger, and positions are reserved for compatibility with other modules, thereby realizing a multi-mode integrated satellite vehicle-mounted terminal.

[0024] RTK high-precision positioning antenna nut, the external antenna is twisted onto the terminal through the SMA adapter. Here is the nut; 2PIN vehicle power cable; reserved holes to support customized DMR intercom / RJ45 and other functions; the machine has a built-in large speaker; a reserved 16-pin interface on the side to support customized hand microphones, car microphones, noise-canceling headphones and other accessories.

[0025] The full-band vehicle-mounted antenna is a four-system multi-frequency vehicle-mounted antenna that supports GPS, BDS, GLONASS, and GALILEO. It is particularly suitable for many vehicle-mounted applications, such as autonomous driving, patrolling, disaster monitoring, public security monitoring, etc. It can be fixed on the roof by magnets.

[0026] A satellite vehicle terminal, the area is reserved for the internal space of the satellite vehicle terminal. It can support the deployment of DMR intercom modules and intercom functions; it can support the deployment of UWB modules and indoor positioning functions; it can support the deployment of private network modules and 1.8G / 1.4G, 600M private network communication functions; it can support the deployment of RFID / ID card modules and data collection functions.

[0027] The above functions are used as examples, including but not limited to the above functions. Support USB port, serial port, MINIPCI-E port and other interfaces, only need to debug and test module functions, development is convenient and fast.

[0028] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A satellite vehicle terminal, characterized in that: The case is connected to the mainboard, the mainboard is respectively connected to the SIM card board, private network module, RFID module and RTK module, the case is connected to the vehicle antenna nut, the vehicle antenna nut is connected to the RF line, the private network module is connected to the USB port through the MINIPCI-E interface, the RFID module is connected to the 0 serial port, the RTK module is connected to the 1 serial port, the RTK module is connected to the RTK board, the back of the RTK board is grounded to the middle frame of the case through a conductive sponge, the RTK board is fixed to the middle frame of the case with screws, the mainboard reserves five pins connected to the serial port of the SIM card board through flying wires or FPC, the RTK board is connected to the antenna seat, the antenna seat is connected to the RF line, and is connected to the external vehicle antenna through the RF line transmission.

2. A satellite vehicle-mounted terminal according to claim 1, characterized in that: The main board is connected to the hub and the level conversion chip respectively. The hub is connected to the USB port. The USB port is connected to the private network module through data transmission. The level conversion chip is connected to serial port 0 and serial port 1 respectively. Serial port 0 is connected to the RFID module through data transmission, and serial port 1 is connected to the RTK module through data transmission.

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