Double-frequency GNSS positioning equipment

Abstract

The utility model belongs to the field of satellite navigation, and particularly relates to double-frequency GNSS positioning equipment, which comprises a shell in which a circuit board is arranged, and is characterized in that the circuit board is provided with an antenna module for receiving Beidou satellite signals; the GNSS positioning module is used for processing the Beidou satellite signal to output a TTL (Transistor-Transistor Logic) signal; the conversion chip is used for converting the TTL signal into an RS232 signal; the power management module is used for supplying power; the antenna module, the conversion chip and the power management module are connected with the GNSS positioning module. According to the utility model, after receiving a Beidou satellite signal, the antenna module sends the Beidou satellite signal to the GNSS positioning module for data processing, and converts the processed TTL signal into an RS232 signal through the conversion chip for output; the positioning equipment can be suitable for Beidou satellite signal processing, and positioning information can be provided more stably.

Description

Technical Field

[0001] The utility model belongs to the field of satellite navigation, and particularly relates to a dual-frequency GNSS positioning device. Background Art

[0002] The GNSS global satellite navigation system is mainly used in the fields of space positioning and position navigation, and is an important information guarantee for the economic and social development. With the development of society and economy, the satellite navigation system has increasingly penetrated 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 effects 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 and 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 are continuously developing, and the economic benefits are gradually emerging.

[0003] In the GNSS global satellite navigation system, the Beidou satellite navigation system (BDS) is a satellite navigation system independently developed by China, with the characteristics of high precision, high reliability, and high coverage. In order to ensure the stable reception of positioning signals, a GNSS positioning device 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 GNSS positioning device, which can be applied to the processing of Beidou satellite signals and can provide positioning information more stably.

[0005] In order to achieve the above purpose, the technical solution of the utility model is as follows.

[0006] A dual-frequency GNSS positioning device includes a housing, and a circuit board is arranged inside the housing. It is characterized in that the following components are arranged on the circuit board:

[0007] An antenna module for receiving Beidou satellite signals;

[0008] A GNSS positioning module for processing Beidou satellite signals to output TTL signals;

[0009] A conversion chip for converting TTL signals into RS232 signals;

[0010] A power management module for power supply;

[0011] The antenna module, the conversion chip, and the power management module are all connected to the GNSS positioning module.

[0012] In this device, after the antenna module receives the Beidou satellite signal, it sends the signal to the GNSS positioning module for data processing, and converts the processed TTL signal into an RS232 signal through a conversion chip for output; this enables the positioning device to be applicable to Beidou satellite signal processing and provide positioning information more stably.

[0013] Furthermore, the antenna module includes an antenna circuit for receiving Beidou satellite signals, a first filtering circuit for filtering, two first radio frequency matching circuits for passing high-level signals and low-level signals respectively, a mixing circuit for mixing high-level signals and low-level signals, and a first amplifying circuit for amplifying signals; the antenna circuit is connected to the first filtering circuit, the first filtering circuit is connected to the mixing circuit through two first radio frequency matching circuits, the mixing circuit is connected to the first amplifying circuit, and the first amplifying circuit is connected to the GNSS positioning module.

[0014] Furthermore, the GNSS positioning module includes:

[0015] A signal access module for accessing Beidou satellite signals, and two second radio frequency matching circuits are provided on the signal access module;

[0016] A CPU for processing Beidou satellite signals, and the model of the CPU is BK1662T;

[0017] An interface module for outputting the Beidou satellite signals processed by the CPU and supplying power to the CPU;

[0018] The antenna module is connected to the signal access module, the signal access module is connected to the CPU through two second radio frequency matching circuits, the CPU is connected to the interface module, and the interface module is connected to the conversion chip and the power supply pipeline module.

[0019] Furthermore, the signal access module includes a signal entry circuit for accessing Beidou satellite signals, a second amplifying circuit for amplifying Beidou satellite signals, and a second filtering circuit for filtering Beidou satellite signals. The antenna module is connected to the signal entry circuit, the signal entry circuit is connected to the second amplifying circuit, the second amplifying circuit is connected to the second filtering circuit, and the second filtering circuit is connected to the CPU through two second radio frequency matching circuits.

[0020] Furthermore, the model of the interface module is GT-1612.

[0021] Furthermore, the module also includes a clock module, and the clock module is connected to the CPU.

[0022] Further, the module further includes an oscillation signal circuit, and the oscillation signal circuit is connected to the CPU.

[0023] The beneficial effect of the present utility model is that in the present utility model, after the antenna module receives the Beidou satellite signal, it is sent to the GNSS positioning module for data processing, and the processed TTL signal is converted into an RS232 signal through a conversion chip for output; so that the positioning device can be applicable to the processing of Beidou satellite signals and can provide positioning information more stably. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 is an exploded view of the present utility model.

[0025] Figure 2 is the circuit schematic diagram of the circuit board.

[0026] Figure 3 is the circuit schematic diagram of the antenna module.

[0027] Figure 4 is the circuit schematic diagram of the conversion chip and the power management module.

[0028] Figure 5 is the radio frequency circuit schematic diagram of the GNSS positioning module.

[0029] Figure 6 is the circuit schematic diagram of the GNSS positioning module.

[0030] Figure 7 is the circuit schematic diagram of the access module.

[0031] Figure 8 is the circuit schematic diagram of the CPU.

[0032] Figure 9 is the circuit schematic diagram of the interface module.

[0033] Figure 10 is the circuit schematic diagram of the clock module and the oscillation signal module. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0034] 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.

[0035] A dual-frequency GNSS positioning device includes a housing 1, and a circuit board 2 is arranged inside the housing 1. It is characterized in that the following are arranged on the circuit board 2:

[0036] An antenna module for receiving Beidou satellite signals;

[0037] A GNSS positioning module for processing Beidou satellite signals to output TTL signals;

[0038] A conversion chip 21 for converting TTL signals into RS232 signals;

[0039] A power management module 22 for power supply;

[0040] The antenna module, conversion chip 21, and power management module 22 are all connected to the GNSS positioning module.

[0041] Furthermore, the antenna module includes an antenna circuit 23 for receiving Beidou satellite signals, a first filtering circuit 24 for filtering, two first radio frequency matching circuits 25 for passing high-level signals and low-level signals respectively, a mixing circuit 26 for mixing high-level signals and low-level signals, and a first amplification circuit 27 for amplifying signals; the antenna circuit 23 is connected to the first filtering circuit 24, the first filtering circuit 24 is connected to the mixing circuit 26 through two first radio frequency matching circuits 25, the mixing circuit 26 is connected to the first amplification circuit 27, and the first amplification circuit 27 is connected to the GNSS positioning module.

[0042] Furthermore, the GNSS positioning module includes:

[0043] A signal access module for accessing Beidou satellite signals, and two second radio frequency matching circuits 28 are provided on the signal access module;

[0044] A CPU 29 for processing Beidou satellite signals, and the model of the CPU 29 is BK1662T;

[0045] An interface module 210 for outputting the Beidou satellite signals processed by the CPU 29 and supplying power to the CPU 29;

[0046] The antenna module is connected to the signal access module, the signal access module is connected to the CPU 29 through two second radio frequency matching circuits 28, the CPU 29 is connected to the interface module 210, and the interface module 210 is connected to the conversion chip 21 and the power management module 22.

[0047] Further, the signal access module includes a signal input circuit 211 for receiving Beidou satellite signals, a second amplification circuit 212 for amplifying Beidou satellite signals, and a second filtering circuit 213 for filtering Beidou satellite signals. The antenna module is connected to the signal input circuit 211, the signal input circuit 211 is connected to the second amplification circuit 212, the second amplification circuit 212 is connected to the second filtering circuit 213, and the second filtering circuit 213 is connected to the CPU 29 through two second radio frequency matching circuits 28.

[0048] Further, the model of the interface module 210 is GT-1612.

[0049] Further, the module further includes a clock module 214, and the clock module 214 is connected to the CPU 29.

[0050] Further, the module further includes an oscillation signal circuit 215, and the oscillation signal circuit 215 is connected to the CPU 29.

[0051] 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 GNSS positioning device, comprising a housing, wherein a circuit board is arranged in the housing, characterized in that: The circuit board is provided with: Antenna module for receiving Beidou satellite signals; GNSS positioning module used to process Beidou satellite signals to output TTL signals; A conversion chip used to convert TTL signals into RS232 signals; A power management module for power supply; The antenna module, the conversion chip and the power management module are all connected to the GNSS positioning module.

2. A dual-frequency GNSS positioning device according to claim 1, characterized in that: The antenna module includes an antenna circuit for receiving Beidou satellite signals, a first filtering circuit for filtering, two first radio frequency matching circuits for passing high-level signals and low-level signals respectively, a mixing circuit for mixing high-level signals and low-level signals, and a first amplifying circuit for amplifying signals; the antenna circuit is connected to the first filtering circuit, the first filtering circuit is connected to the mixing circuit through two first radio frequency matching circuits, the mixing circuit is connected to the first amplifying circuit, and the first amplifying circuit is connected to the GNSS positioning module.

3. A dual-frequency GNSS positioning device according to any one of claims 1-2, characterized in that: The GNSS positioning module includes: A signal access module for accessing Beidou satellite signals, wherein the signal access module is provided with two second radio frequency matching circuits; A CPU for processing Beidou satellite signals, wherein the CPU model is BK1662T; An interface module used to output Beidou satellite signals after CPU processing and to supply power to the CPU; The antenna module is connected to the signal access module, the signal access module is connected to the CPU through two second radio frequency matching circuits, the CPU is connected to the interface module, and the interface module is connected to the conversion chip and the power supply pipeline module.

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

5. A dual-frequency GNSS positioning device according to claim 3, characterized in that: The model of the interface module is GT-1612.

6. A dual-frequency GNSS positioning device according to claim 3, characterized in that: The module also includes a clock module, and the clock module is connected to the CPU.

7. A dual-frequency GNSS positioning device according to claim 3, characterized in that: The module also includes an oscillation signal circuit, and the oscillation signal circuit is connected to the CPU.

Images