Satellite communication device for freight vehicles

Abstract

This utility model discloses a satellite communication device suitable for freight vehicles, comprising a satellite communication device body, which includes a battery / solar power supply for energy supply, a data input / output interface, a control and processing system, and a satellite transmission module; the battery / solar power supply is connected to the data input / output interface, the control and processing system, and the satellite transmission module. By applying the satellite communication device body to freight vehicles, this utility model enables satellite communication between freight vehicles and monitoring centers. This eliminates signal blind spots, restricts usage locations, and transcends national borders. Furthermore, the stable satellite signal ensures effective data transmission, and the battery / solar power supply eliminates the need for wiring, making it convenient and meeting usage requirements.

Description

Technical Field

[0001] This utility model relates to the field of satellite communication technology, and in particular to a satellite communication device suitable for freight vehicles. Background Technology

[0002] In existing vehicle communication applications, because vehicles are constantly moving, wired communication is not possible, and wireless communication is the only option. In existing technical solutions, real-time communication is often achieved through 4G terminals. This method has the following obvious drawbacks: (1) When freight vehicles are operating in remote suburbs, mountainous areas, etc., due to the limited coverage of base stations, there is no 4G signal or the signal is very weak. At this time, it is impossible to achieve good communication between the vehicle and the monitoring center, and problems such as communication failure or signal interruption will occur. From the perspective of real-time monitoring, this period is equivalent to a signal blind zone, and data cannot be effectively delivered, or the error rate is high, or the delay is very high, greatly reducing the real-time performance; (2) In cross-border freight applications, the communication mechanism of the 4G communication used is incompatible with the data cards of various countries, which means that 4G communication used in country A cannot be used normally in country B, and vice versa. Communication is restricted by national borders. In view of the above, this application proposes a satellite communication device suitable for freight vehicles. Utility Model Content

[0003] The purpose of this invention is to address the shortcomings of existing technologies by proposing a satellite communication device suitable for freight vehicles.

[0004] To achieve the above objectives, the present invention adopts the following technical solution:

[0005] A satellite communication device suitable for freight vehicles includes a satellite communication device body, which includes a battery / solar power supply for energy supply, a data input / output interface, a control and processing system, and a satellite transmission module;

[0006] The battery / solar power supply is connected to the data input / output interface, the control and processing system, and the satellite transmission module. The control and processing system is connected to the data input / output interface and the satellite transmission module.

[0007] The control and processing system includes a CPU, memory, timers, and interrupters;

[0008] The satellite transmission module is connected to a monitoring and management center and a communication satellite.

[0009] Preferably, the battery / solar power supply includes a DC-DC step-down circuit for providing the required voltage and current to different circuits within the satellite communication device.

[0010] Preferably, the data input / output interface is wirelessly connected to an external device, which is a transceiver device on the freight vehicle, and the data input / output interface has a reserved wired interface.

[0011] Preferably, the control and processing system interacts with the data input / output interface and the satellite transmission module using data or control commands. Data interaction uses an uplink, meaning that the data is input through the data input / output interface, processed by the control and processing system, and then uploaded to the communication satellite by the satellite transmission module. Control command interaction uses a downlink, meaning that the satellite transmission module receives commands from the communication satellite, processes them through the control and processing system, and then sends them to external devices for execution via the data input / output interface.

[0012] Preferably, the satellite transmission module transmits wireless signals with the communication satellite. The satellite transmission module includes a communication baseband processing module, a digital-to-analog converter module, a modulation and demodulation module, a radio frequency signal amplification and switching module, and an antenna.

[0013] Preferably, the monitoring and management center is a remote centralized monitoring system and is not a component of the satellite communication device itself.

[0014] Preferably, the communication satellite is a transmission and forwarding device for the satellite communication device itself and the monitoring and management center, and is not a component of the satellite communication device itself.

[0015] Compared with existing technologies, the beneficial effects of this utility model are:

[0016] 1. By installing satellite communication devices on freight vehicles, satellite communication is enabled between the freight vehicles and the monitoring center. This fully utilizes the global coverage of satellite signals and the advantages of no dead zones or blind spots, expanding the scope of use for freight vehicles and improving the reliability, effectiveness, and real-time performance of communication. Furthermore, due to the uniformity of satellite signal standards and the stability of the signal, cross-border freight vehicles can operate normally without national border restrictions, achieving good communication in any country. In addition, since satellite communication does not require the deployment of any base stations, the overall cost of the solution is greatly reduced.

[0017] 2. With the battery / solar power supply, the device is powered by batteries or solar energy and uses wireless satellite communication. The input and output interfaces also use wireless communication. Therefore, no wired cables need to be laid when using the entire device, which greatly improves the convenience of use and makes it easy to use on different freight vehicles.

[0018] This invention applies a satellite communication device to a freight vehicle, enabling satellite communication between the freight vehicle and the monitoring center. This eliminates signal blind spots, allows for unrestricted use at any location, and transcends national boundaries. Furthermore, the stable satellite signal ensures effective data transmission. Powered by batteries / solar energy, it requires no wiring, making it convenient and meeting user needs. Attached Figure Description

[0019] Figure 1 This is a block diagram of a satellite communication device suitable for freight vehicles proposed in this utility model;

[0020] Figure 2 This utility model presents an initialization flowchart for the control and processing system in a satellite communication device suitable for freight vehicles.

[0021] Figure 3 A flowchart illustrating the uplink data processing in a satellite communication device suitable for freight vehicles, as proposed in this utility model.

[0022] Figure 4 This invention presents a flowchart of downlink control command processing in a satellite communication device suitable for freight vehicles. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0024] Reference Figure 1-4 A satellite communication device suitable for freight vehicles includes a satellite communication device body, which includes a battery / solar power supply for energy supply, a data input / output interface, a control and processing system, and a satellite transmission module.

[0025] The battery / solar power supply is connected to the data input / output interface, the control and processing system, and the satellite transmission module; the control and processing system is connected to the data input / output interface and the satellite transmission module.

[0026] The battery / solar power supply includes a DC-DC step-down circuit that provides the required voltage and current to different circuits within the satellite communication device. The battery / solar power supply is a wiring-free device. The data input / output interface is wirelessly connected to external devices. The wireless transmission method is used to ensure that the device is suitable for different freight vehicles and is easy to install. The external devices are transceivers on the freight vehicles. The data input / output interface also has a wired interface. The wired interface is provided to take into account the universality of external devices and improve the applicability.

[0027] The control and processing system includes a CPU, memory, timers, and interrupt handlers;

[0028] The control and processing system interacts with the data input / output interface and the satellite transmission module to exchange data or control commands. Data interaction uses an uplink, meaning that the data is input through the data input / output interface, processed by the control and processing system, and then uploaded to the communication satellite by the satellite transmission module. Control command interaction uses a downlink, meaning that the satellite transmission module receives commands from the communication satellite, processes them through the control and processing system, and then sends them to external devices for execution through the data input / output interface.

[0029] The satellite transmission module connects the monitoring and management center to a communication satellite. The monitoring and management center and the communication satellite are connected, and wireless signal transmission occurs between the satellite transmission module and the communication satellite. The satellite transmission module includes a communication baseband processing module, a digital-to-analog converter module, a modulation and demodulation module, a radio frequency signal amplification and switching module, and an antenna. The satellite transmission module exists as a standardized component of the signal path, and the composition of its internal modules will not be described further here. The monitoring and management center is a remote centralized monitoring system and is not part of the satellite communication device itself. The communication satellite is a transmission and relay device between the satellite communication device and the monitoring and management center and is not part of the satellite communication device itself. This utility model applies the satellite communication device to freight vehicles, enabling satellite communication between the freight vehicles and the monitoring center. This ensures that the freight vehicle's communication system has no signal blind spots, is unrestricted by location, and has no national boundaries. Furthermore, the satellite signal is stable, guaranteeing the effectiveness of data transmission. Powered by batteries / solar power, it requires no wiring, is convenient to use, and meets the application requirements.

[0030] Working principle: When in use, the entire satellite communication device is applied to the freight vehicle and powered by battery / solar power. No wired cables need to be laid. In addition, in the operation and supervision of freight vehicles, the connection with external equipment (such as sensors, data collectors, vehicle controllers, etc.) is also wireless, so that the device can be used without wiring, which makes it easy to use the device on different freight vehicles.

[0031] After the entire device is powered on, the hardware of the control and processing system is reset, and the clock and data input / output interfaces in the control and processing system are initialized to determine if they are normal. The external hardware interface and satellite transmission module are also initialized and determined to be normal. If they are normal, the default parameters and working status of the external interface and satellite transmission module are configured.

[0032] After initialization, the system receives data from external devices through the data input / output interface. The control and processing system then enters the uplink data processing flow. The control and processing system determines whether the received data is valid. If not, it discards the data; if so, it performs data protocol parsing, followed by data classification to separate sensor data, abnormal alarm data, and location information data. The data is then prioritized: sensor data has a priority of 3, abnormal alarm data has a priority of 1, and location information data has a priority of 2. After priority determination, the data is packetized, encrypted, and transmitted to the satellite transmission module. The satellite transmission module transmits the data to the monitoring and management center via a communication satellite. Upon receiving the data, the monitoring and management center issues a reception response.

[0033] When the monitoring and management center issues a control command, which is relayed via a communication satellite, and the satellite transmission module receives the control command from the communication satellite, the control and processing system enters the downlink control command processing flow. After receiving the control command, the control and processing system determines whether the command is valid. If invalid, it is discarded; if valid, the control command is decrypted and unpacked. After unpacking, the control command protocol is parsed to analyze whether it is an urgent or non-urgent command. If it is an urgent command, it is immediately forwarded to the data input / output interface, which transmits it to the external device. Non-urgent commands can be subsequently transmitted to the external device through the data input / output interface, and then the external device issues a receive response.

[0034] By using this satellite communication device in freight vehicles, the communication system can achieve signal coverage without blind spots, unrestricted usage locations, and no national border limitations, thanks to the global coverage and stable signal of the satellite. It also ensures the effectiveness of data transmission, solving the problems of weak signal and lack of 4G communication base station coverage in some areas during freight transport, as well as the problem of ineffective communication in cross-border freight due to inconsistent 4G communication mechanisms and standards.

[0035] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A satellite communication device adapted for use with a cargo vehicle, comprising a satellite communication device body, characterized in that, The satellite communication device includes a battery / solar power supply for energy supply, a data input / output interface, a control and processing system, and a satellite transmission module. The battery / solar power supply is connected to the data input / output interface, the control and processing system, and the satellite transmission module. The control and processing system is connected to the data input / output interface and the satellite transmission module. The control and processing system includes a CPU, memory, timers, and interrupters; The satellite transmission module is connected to a monitoring and management center and a communication satellite.

2. A satellite communication device for use in a truck according to claim 1, characterized in that The battery / solar power supply includes a DC-DC step-down circuit for providing the required voltage and current to various circuits within the satellite communication device.

3. A satellite communication device for use in a truck according to claim 1, characterized in that The data input / output interface is wirelessly connected to an external device, which is a transceiver on the freight vehicle. A wired interface is also provided on the data input / output interface.

4. A satellite communication device for use in a truck according to claim 3, characterized in that The control and processing system interacts with the data input / output interface and the satellite transmission module with data or control commands. Data interaction uses an uplink, meaning that the data is input through the data input / output interface, processed by the control and processing system, and then uploaded to the communication satellite by the satellite transmission module. Control command interaction uses a downlink, meaning that the satellite transmission module receives commands from the communication satellite, processes them through the control and processing system, and then sends them to external devices for execution through the data input / output interface.

5. A satellite communication device for use in a truck according to claim 1, characterized in that The satellite transmission module transmits wireless signals with the communication satellite. The satellite transmission module includes a communication baseband processing module, a digital-to-analog conversion module, a modulation and demodulation module, a radio frequency signal amplification and switching module, and an antenna.

6. A satellite communication device for use in a truck according to claim 1, characterized in that The monitoring and management center is a remote centralized monitoring system and is not part of the satellite communication device itself.

7. A satellite communication device for use in a truck according to claim 1, characterized in that The communication satellite is a transmission and forwarding device for the satellite communication device itself and the monitoring and management center, and is not a component of the satellite communication device itself.

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