Double-frequency combined inertial GNSS positioning module

Abstract

The utility model belongs to the field of satellite navigation, and particularly relates to a double-frequency combined inertial GNSS (Global Navigation Satellite System) positioning module, which is characterized by comprising a signal access module used for entering Beidou satellite signals and provided with two radio frequency matching circuits; the CPU is used for processing Beidou satellite signals, and the model of the CPU is BK1662N; the interface module is used for outputting the Beidou satellite signals processed by the CPU and supplying power to the CPU; the inertial measurement unit is used for acquiring motion data of the carrier; the signal access module is connected with the CPU through the two radio frequency matching circuits, and the CPU is connected with the interface module and the inertial measurement unit. According to the utility model, the positioning module can be suitable for Beidou satellite signal processing, can provide positioning information more stably, can obtain motion data of the carrier itself, and has richer functions.

Description

Technical Field

[0001] The utility model belongs to the field of satellite navigation, and particularly relates to a GNSS module. Background Art

[0002] The GNSS global satellite navigation system is mainly used in the fields of spatial positioning and position navigation, and is an important information guarantee for economic and social development. With the development of society and economy, the satellite navigation system has been increasingly penetrating into society and people's lives. In traditional fields such as transportation, agriculture, forestry, animal husbandry and fishery, and electric power energy, the integrated application has been continuously deepened, the scale has been continuously expanded, the results have been more remarkable, and it is developing in depth into the markets of railway transportation, inland waterway shipping, ocean navigation, air transportation and traffic infrastructure construction management. In addition, in emerging application fields such as industrial Internet, Internet of Things, and Internet of Vehicles, fields such as autonomous driving, automatic parking, and automatic logistics have been continuously developing, and economic benefits have gradually emerged.

[0003] In the GNSS global satellite navigation system, the Beidou satellite navigation system (BDS) is a satellite navigation system independently developed by China, with characteristics such as high precision, high reliability, and high coverage. In order to ensure the stable reception of positioning signals, a GNSS positioning module that can adapt to and support pure Beidou is required. Summary of the Utility Model

[0004] The purpose of the utility model is to provide a dual-frequency combined inertial GNSS positioning module, which can be applied to Beidou satellite signal processing and can provide positioning information more stably.

[0005] Another purpose of the utility model is to provide a dual-frequency combined inertial GNSS positioning module, which is also integrated with an inertial measurement unit and has more abundant functions.

[0006] In order to achieve the above purposes, the technical solution of the utility model is as follows.

[0007] A dual-frequency combined inertial GNSS positioning module, characterized by comprising:

[0008] A signal access module for accessing Beidou satellite signals, and two-way radio frequency matching circuits are arranged on the signal access module;

[0009] A CPU for processing Beidou satellite signals, and the model of the CPU is BK1662N;

[0010] An interface module for outputting the Beidou satellite signals processed by the CPU and supplying power to the CPU;

[0011] An inertial measurement unit for obtaining the motion data of the carrier itself;

[0012] The signal access module is connected to the CPU through two radio frequency matching circuits, and the CPU is connected to both the interface module and the inertial measurement unit.

[0013] In this module, the Beidou satellite signal is input from the signal access module, enters the CPU through two radio frequency matching circuits for processing, and finally is output through the interface module. At the same time, the motion data of the carrier itself obtained by the inertial measurement unit is transmitted to the CPU for processing and finally output through the interface module. That is, this positioning module can be applied to the processing of Beidou satellite signals, can provide positioning information more stably, and can also obtain the motion data of the carrier itself, with richer functions.

[0014] Furthermore, this module also includes a power management circuit for supplying power to the inertial measurement unit, and both the CPU and the inertial measurement unit are connected to the power management circuit.

[0015] Furthermore, the signal access module includes a signal input circuit for receiving the Beidou satellite signal, an amplified signal circuit for amplifying the Beidou satellite signal, and a filtering circuit for filtering the Beidou satellite signal. The signal input circuit is connected to the amplified signal circuit, the amplified signal circuit is connected to the filtering circuit, and the filtering circuit is connected to the CPU through two radio frequency matching circuits.

[0016] Furthermore, the model of the interface module is GT-1612.

[0017] Furthermore, this module also includes a clock module, and the clock module is connected to the CPU.

[0018] Furthermore, this module also includes an oscillation signal circuit, and the oscillation signal circuit is connected to the CPU.

[0019] The beneficial effect of the present utility model is that in this module, the Beidou satellite signal is input from the signal access module, enters the CPU through two radio frequency matching circuits for processing, and finally is output through the interface module. At the same time, the motion data of the carrier itself obtained by the inertial measurement unit is transmitted to the CPU for processing and finally output through the interface module. That is, this positioning module can be applied to the processing of Beidou satellite signals, can provide positioning information more stably, and can also obtain the motion data of the carrier itself, with richer functions. Description of the Drawings

[0020] Figure 1 is the circuit schematic diagram of the present utility model.

[0021] Figure 2 is the circuit schematic diagram of the clock module, access module and CPU.

[0022] Figure 3It is the circuit schematic diagram of the access module.

[0023] Figure 4 It is the circuit schematic diagram of the clock module and the CPU.

[0024] Figure 5 It is the circuit schematic diagram of the interface module.

[0025] Figure 6 It is the circuit schematic diagram of the oscillation signal module.

[0026] Figure 7 It is the circuit schematic diagram of the inertial measurement unit and the power management circuit. Specific implementation manners

[0027] In order to make the objectives, technical solutions and advantages of the present utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present utility model and are not used to limit the present utility model.

[0028] See Figure 1-7 , this embodiment provides a dual-frequency combined inertial GNSS positioning module, which is characterized by including:

[0029] A signal access module for accessing Beidou satellite signals, and two radio frequency matching circuits 3 are arranged on the signal access module;

[0030] A CPU1 for processing Beidou satellite signals, and the model of the CPU1 is BK1662N;

[0031] An interface module 2 for outputting the Beidou satellite signals processed by the CPU1 and supplying power to the CPU1;

[0032] An inertial measurement unit 4 for obtaining the motion data of the carrier itself;

[0033] The signal access module is connected to the CPU1 through two radio frequency matching circuits 3, and the CPU1 is connected to both the interface module 2 and the inertial measurement unit 4.

[0034] Further, the module further includes a power management circuit 5 for supplying power to the inertial measurement unit, and both the CPU1 and the inertial measurement unit 4 are connected to the power management circuit 5.

[0035] Further, the signal access module includes a signal input circuit 6 for receiving Beidou satellite signals, an amplified signal circuit 7 for amplifying Beidou satellite signals, and a filtering circuit 8 for filtering Beidou satellite signals. The signal input circuit 6 is connected to the amplified signal circuit 7, the amplified signal circuit 7 is connected to the filtering circuit 8, and the filtering circuit 8 is connected to the CPU 1 through two radio frequency matching circuits 3.

[0036] Further, the model of the interface module 2 is GT-1612.

[0037] Further, the module further includes a clock module 9, and the clock module 9 is connected to the CPU 1.

[0038] Further, the module further includes an oscillation signal circuit 10, and the oscillation signal circuit 10 is connected to the CPU 1.

[0039] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, and improvements made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A dual-frequency combined inertial GNSS positioning module, characterized in that: Included are: A signal access module for accessing Beidou satellite signals, wherein the signal access module is provided with two radio frequency matching circuits; A CPU for processing Beidou satellite signals, wherein the CPU model is BK1662N; An interface module used to output Beidou satellite signals after CPU processing and to supply power to the CPU; An inertial measurement unit for acquiring motion data of the carrier itself; The signal access module is connected to the CPU via two radio frequency matching circuits, and the CPU is connected to both the interface module and the inertial measurement unit.

2. A dual-frequency combined inertial GNSS positioning module according to claim 1, characterized in that: The module also includes a power management circuit for supplying power to the inertial measurement unit, and the CPU and the inertial measurement unit are both connected to the power management circuit.

3. The dual-frequency combined inertial GNSS positioning module according to claim 1, characterized in that: The signal access module includes a signal entry circuit for entering Beidou satellite signals, a signal amplification circuit for amplifying Beidou satellite signals, and a filtering circuit for filtering Beidou satellite signals. The signal entry circuit is connected to the signal amplification circuit, the signal amplification circuit is connected to the filtering circuit, and the filtering circuit is connected to the CPU through two RF matching circuits.

4. The dual-frequency combined inertial GNSS positioning module according to claim 1, characterized in that: The model of the interface module is GT-1612.

5. The dual-frequency combined inertial GNSS positioning module according to claim 1, characterized in that: The module also includes a clock module, and the clock module is connected to the CPU.

6. The dual-frequency combined inertial GNSS positioning module according to claim 1, characterized in that: The module also includes an oscillation signal circuit, and the oscillation signal circuit is connected to the CPU.

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