A data acquisition and forwarding device and communication method based on Tiantong satellite

Abstract

The present invention discloses a data acquisition and forwarding device and a communication method based on a Tiantong satellite. The data acquisition and forwarding device comprises a Tiantong satellite communication module and a data acquisition module which are connected to each other. The data acquisition and forwarding device automatically forwards the collected data to a remote Tiantong satellite terminal in the form of a Tiantong satellite short message via the Tiantong satellite. The user obtains the data collected by the front-end data acquisition and forwarding device via the short message on the Tiantong satellite terminal, which greatly reduces the active participation of data acquisition personnel. The data acquisition and forwarding device has high practical value in some dangerous areas with serious pollution, nuclear radiation and the like.

Description

Technical Field

[0001] The invention relates to the field of satellite mobile communications, in particular to a data acquisition and forwarding device based on a Tiantong satellite, and also to a communication method for the data acquisition and forwarding device based on a Tiantong satellite. Background Art

[0002] Tiantong Satellite uses a geostationary orbit satellite to provide communication support for remote areas such as oceans, deserts, forests, mountains, etc. that are not fully covered by ground mobile communication networks, as well as areas with uneven population distribution. It can provide all-weather, all-day, stable and reliable satellite mobile communication services for various fields such as personal communications, marine transportation, offshore fisheries, aviation rescue, tourism and scientific research, and support voice, short message and data services. In addition, the main advantage of the system is that the satellite terminal is miniaturized and mobile-based, which is easy to carry, but the power consumption requirements of the terminal are relatively high.

[0003] Data collection equipment is mainly used to collect data related to pollution levels and nuclear radiation in environmentally polluted areas and nuclear radiation areas. However, for areas with serious environmental pollution and strong nuclear radiation, it is not suitable for workers to carry data collection equipment to collect data on site. In order to avoid long-term exposure of personnel to dangerous environments, it is necessary to develop a data collection and forwarding device that can automatically collect and forward data at the work site without manual on-site intervention. For collection equipment, public network signals can be used to forward data, but for areas without public network signal coverage, satellite signals with wide-area communication capabilities are needed to solve the data forwarding problem. The Tiantong satellite mobile communication system has full coverage of my country's land signals and supports voice, short message and data services. Its data and short message services can solve the data forwarding problem of data collection equipment.

[0004] Taking into account that the data acquisition equipment collects a small amount of data and does not require continuous forwarding of data, the data service and short message service based on the Tiantong satellite mobile communication system can realize the forwarding function of the collected data. Considering that the data service requires the Tiantong satellite data acquisition and forwarding device to be in working condition at all times during use, it has a great impact on the standby time of the terminal. Therefore, the Tiantong satellite short message forwarding method of collecting data is more suitable for actual application needs. Summary of the invention

[0005] The purpose of the present invention is to provide a data collection and forwarding device and communication method based on Tiantong satellite, which automatically forwards the collected data to a remote Tiantong satellite terminal in the form of a Tiantong satellite short message.

[0006] To achieve the above functions, the present invention designs a data acquisition and forwarding device based on Tiantong satellite, including a Tiantong satellite communication module and a data acquisition module connected to each other, which is used to realize data transmission and reception with a Tiantong satellite terminal through the Tiantong satellite;

[0007] The data acquisition module is used to collect data of the target area and transmit it to the Tiantong satellite communication module, including a physical interface module, the physical interface module includes at least two GPIO interfaces and at least one UART interface; and also includes a power supply for supplying power to the physical interface module;

[0008] The Tiantong satellite communication module is used to receive the data sent by the data acquisition module, and after processing the data, send it to the Tiantong satellite terminal in the form of a short message based on a radio frequency signal. It includes a main control unit, and a communication unit, an interface unit, a power supply unit, an alarm unit, a positioning unit and an interaction unit respectively connected to the main control unit, wherein the interface unit is connected to each interface of the physical interface module of the data acquisition module correspondingly.

[0009] As a preferred technical solution of the present invention: the main control unit includes a baseband processing module and an application processing module, and serial communication is adopted between the two. The serial communication is based on the serial communication protocol structure, which is serial interface physical layer, second layer protocol, third layer protocol, and application layer from bottom to top, wherein the baseband processing module is used to complete the implementation of the high-level protocol stack and the serial interface physical layer standard, and realize data interaction with the application processing module; the application processing module is used to realize upper-layer applications, bottom-level drivers, and peripheral management.

[0010] As a preferred technical solution of the present invention: the serial interface physical layer in the serial communication protocol structure is a UART interface connected between the Tiantong satellite communication module and the data acquisition module, and the data collected by the data acquisition module is transmitted to the second layer protocol in the form of a message frame, wherein the message frame includes a message header, a message body, and a message tail;

[0011] The second layer protocol is used to receive the message frame sent by the physical layer of the serial interface, make a response, and receive the message frame sent by the third layer protocol, package the message body in the message frame sent by the third layer protocol, and send the message frame to the physical layer of the serial interface;

[0012] The third layer protocol is used to sort the message frames and distribute them to different applications according to the message type to which they belong. It also receives the data blocks sent by the application layer, splits and reassembles the data blocks into message frames and sends them to the second layer protocol.

[0013] The application layer contains functional modules that parse messages and send data blocks to the third layer protocol.

[0014] As a preferred technical solution of the present invention: the communication unit includes a Tiantong satellite antenna and a radio frequency module that are interconnected. The Tiantong satellite antenna is used to transmit or receive radio frequency signals to the Tiantong satellite. The radio frequency module is used to perform frequency conversion, filtering, and power amplification processing on the radio frequency signals between the Tiantong satellite antenna and the Tiantong satellite. The radio frequency module includes a radio frequency integrated circuit, a transmitting port connected to the output end of the radio frequency integrated circuit, a receiving port connected to the input end of the radio frequency integrated circuit, and a switching switch connected to the transmitting port and the receiving port. The switching switch is connected to the Tiantong satellite antenna, and the radio frequency integrated circuit is connected to the main control unit.

[0015] As a preferred technical solution of the present invention: the interface unit includes a serial port and a satellite card respectively connected to the main control unit, wherein the serial port is connected to the physical interface module of the data acquisition module to realize the sending and receiving of data and instructions between the Tiantong satellite communication module and the data acquisition module.

[0016] As a preferred technical solution of the present invention: the warning unit includes a motor, a buzzer, and a flash light respectively connected to the main control unit, and is used to issue a warning for exceeding the standard or abnormal data.

[0017] As a preferred technical solution of the present invention: the interactive unit includes a button and an LED respectively connected to the main control unit, wherein the button is used to turn on and off the data acquisition and forwarding device, and the LED is used to indicate the network access status.

[0018] The present invention also designs a communication method for a data acquisition and forwarding device based on a Tiantong satellite. Based on the data acquisition and forwarding device based on a Tiantong satellite, data acquisition of a target area is completed, and data transmission and reception with a Tiantong satellite terminal are realized through the Tiantong satellite:

[0019] Step S1, respectively install satellite cards with corresponding card numbers in the data acquisition and forwarding device and the Tiantong satellite terminal, turn on the data acquisition and forwarding device and the Tiantong satellite terminal when they are in the preset position of the target area, and wait for the LED light on the data acquisition device indicating successful network access to light up, and then proceed to step S2;

[0020] Step S2, after the Tiantong satellite communication module is turned on and powered on to the network, the data sent by the data acquisition module is received through the UART interface of the data acquisition module, and the processed data is forwarded to the Tiantong satellite terminal through the Tiantong satellite in the form of a short message, wherein the number of short message sending, the time interval and the satellite card number of the Tiantong satellite terminal receiving the short message are all pre-set in the Tiantong satellite communication module in the data acquisition and forwarding device;

[0021] Step S3, when the data acquisition and forwarding device completes the preset number of short message transmissions, it enters the standby state. If the Tiantong satellite terminal does not receive the corresponding short message for a period exceeding the preset time threshold, it also enters the standby state;

[0022] Step S4: After the data acquisition and forwarding device waits for a preset time, it enters a sleep state. If the data acquisition and forwarding device receives a preset activation short message, the data acquisition and forwarding device is awakened;

[0023] Step S5, after the data acquisition and forwarding device is awakened, the Tiantong satellite communication module receives the data sent by the data acquisition module through the interface unit, extracts the information and packages it, and forwards it to the Tiantong satellite terminal in the form of a short message. After completing the preset number of transmissions, it enters the standby state;

[0024] Step S6: After the Tiantong satellite communication module enters the standby state, the Tiantong satellite terminal also successively enters the standby state, and repeats the data acquisition cycle process of steps S1 to S5 at a preset period.

[0025] Beneficial effects: Compared with the prior art, the advantages of the present invention include:

[0026] The present invention designs a data acquisition and forwarding device and a communication method based on the Tiantong satellite. Through the data acquisition and forwarding device, the Tiantong satellite mobile communication system can be used to expand the automatic forwarding function of the collected data without changing the physical structure of the data acquisition module. The Tiantong satellite communication module and the data acquisition module are connected by wire to reliably and safely transmit data between the two. Through its sleep wake-up method, the power consumption of the mobile communication terminal and the Tiantong satellite communication module can be significantly reduced, and the use and standby time of the data acquisition and forwarding device can be extended. Through the customized Tiantong satellite data acquisition packaging and forwarding software, the fully automatic collection and forwarding of data can be realized, and human intervention can be reduced. It is of special significance for use in special regions and environments. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 Schematic diagram of short message forwarding of a data collection and forwarding device provided according to an embodiment of the present invention;

[0028] Figure 2 It is a schematic diagram of the composition of a data collection and forwarding device provided in an embodiment of the present invention;

[0029] Figure 3 is a schematic diagram of the composition of a Tiantong satellite communication module provided according to an embodiment of the present invention;

[0030] Figure 4 is a schematic diagram of a serial communication protocol provided according to an embodiment of the present invention;

[0031] Figure 5 The present invention is a flow chart of a communication method of a data acquisition and forwarding device based on a Tiantong satellite provided in accordance with an embodiment of the present invention. DETAILED DESCRIPTION

[0032] The present invention will be further described below in conjunction with the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the present invention, and cannot be used to limit the protection scope of the present invention.

[0033] The embodiment of the present invention provides a data acquisition and forwarding device based on Tiantong satellite. The data acquisition and forwarding device is an integrated device, including a Tiantong satellite communication module and a data acquisition module connected to each other, and is used to realize data transmission and reception with the Tiantong satellite terminal in the form of short messages through the Tiantong satellite; the schematic diagram of the data acquisition and forwarding device for forwarding short messages is shown in FIG. Figure 1 .

[0034] Reference Figure 2 The data acquisition module is used to collect data of the target area and transmit it to the Tiantong satellite communication module, including a physical interface module, the physical interface module includes at least two GPIO interfaces, at least one UART (Universal Asynchronous Receiver / Transmitter) interface; and also includes a power supply for powering the physical interface module;

[0035] The Tiantong satellite communication module is used to receive the data sent by the data acquisition module, and after processing the data, it is sent to the Tiantong satellite terminal in the form of a short message based on the radio frequency signal. Figure 3 The Tiantong satellite communication module includes a main control unit, and a communication unit, an interface unit, a power supply unit, an alarm unit, a positioning unit and an interaction unit respectively connected to the main control unit, wherein the interface unit is connected correspondingly to each interface of the physical interface module of the data acquisition module.

[0036] The positioning unit includes a Beidou module for positioning.

[0037] In one embodiment, the Tiantong satellite communication module and the data acquisition module are connected and designed as an integrated device. When designing the integrated device, there is no need to make any modifications to the existing data acquisition module. The data acquisition module includes 2 user-defined GPIO interfaces and 1 universal asynchronous receiving / transmitting device UART interface, and can use its own button battery for power supply. The Tiantong satellite communication module needs to be designed specifically according to the actual situation of the data acquisition module. On the premise of ensuring that the Tiantong satellite module has the normal signal receiving and sending function of the Tiantong satellite terminal, according to the external physical interface of the data acquisition module, 2 GPIOs are designed in a peer-to-peer manner. The interface is a UART transceiver interface, and the two GPIO interfaces are used for indicating the sleep status of the data acquisition module and the Tiantong satellite communication module and the related wake-up functions. The UART interface is used as the data channel between the data acquisition module and the Tiantong satellite module; the data acquisition module sends the collected data to the Tiantong satellite communication module through the UART interface, and the Tiantong communication module extracts the received data and packages it into short messages, and forwards it to the remote Tiantong satellite terminal. The user obtains the data collected by the front-end data acquisition and forwarding terminal through the short messages on the Tiantong satellite terminal, so that the user can timely grasp the pollution situation on the site.

[0038] According to the external interface of the data acquisition module, the Tiantong satellite communication module is designed specifically and connected to the data acquisition module in a wired manner. The two parts are connected and packaged in a structural part to form an integrated data acquisition and forwarding device. The Tiantong satellite communication module receives the data collected by the data acquisition module through the serial port, extracts the received data and packages it into a satellite short message to automatically forward it to the remote Tiantong satellite terminal. The two GPIO interfaces realize the indication of the sleep and wake-up status between the data acquisition module and the Tiantong satellite communication module and the wake-up between the related ones, which can significantly reduce the power consumption of the data acquisition module and the Tiantong satellite communication module and significantly improve the overall The standby and usage time of each data collection and forwarding device, the number of short message sending times of the data collection device and the Tiantong satellite terminal at the receiving end are pre-set through the software installed on the Tiantong satellite communication module. The data collection device enters a sleep state after completing the pre-set number of Tiantong satellite short message sending times. If the remote end needs to collect data again, a short message can be sent to the data collection device through manual intervention to wake up the data collection and forwarding device. The data collection device can automatically start a new round of data collection and short message forwarding until the pre-set number of short message sending times is completed, and then enters a sleep state after a certain period of standby, thereby achieving the purpose of reducing power consumption of the data collection and forwarding device.

[0039] The main control unit of the Tiantong satellite communication module adopts the CX1881 chip. The main control unit includes a baseband processing module and an application processing module. Serial communication is used between the two. The serial communication is based on the serial communication protocol structure. Figure 4 , from bottom to top, they are serial interface physical layer, second layer protocol, third layer protocol, and application layer. The baseband processing module is used to complete the implementation of the high-level protocol stack and serial interface physical layer standards, and to achieve data interaction with the application processing module; the application processing module is used to implement upper-layer applications, bottom-layer drivers, and peripheral management, to achieve interaction with users, and to provide software and hardware support for the Tiantong satellite short message service. The upper-layer application includes the data transmission software between the Tiantong satellite communication module and the data acquisition module, and the bottom-layer driver is used to control related hardware devices, including motors, buzzers, and LEDs;

[0040] The serial interface physical layer in the serial communication protocol structure is a UART interface connected between the Tiantong satellite communication module and the data acquisition module, and the data collected by the data acquisition module is transmitted to the second layer protocol in the form of a message frame, wherein the message frame includes a message header, a message body, and a message tail;

[0041] The second layer protocol is used to receive the message frame sent by the physical layer of the serial interface, make a response, and receive the message frame sent by the third layer protocol, package the message body in the message frame sent by the third layer protocol, and send the message frame to the physical layer of the serial interface; the format of the second layer protocol is as shown in Table 1 below, where the storage mode of multi-byte data in the memory is little endian (low byte at low address);

[0042] Table 1

[0043]

[0044] The second layer message header mark, each frame message starts with two "#" (ASCII code is 0x23) marks, "TYPE-2" is the second layer message type, including 4 types, the symbol "D (0x44)" indicates that the message is a data message, and a response must be sent when receiving this type of message; the symbol "A (0x41)" indicates that the message is a correct response message; the symbol "N (0x4E)" indicates that the message is an incorrect response message; "0xFF" indicates that the message is a broadcast message, and no response is required when receiving this type of message, even if the CRC is wrong. The four message formats are shown in Table 2-Table 5 below:

[0045] Table 2

[0046]

[0047] Table 3

[0048]

[0049] Table 4

[0050]

[0051] Table 5

[0052]

[0053] "SEQ" is the second-layer message sequence number, which records the order number of sending the second-layer data message. The value range is: 0 to 255, in a cycle. "LEN" is the number of bytes of the second-layer message containing the third-layer message body. "CRC" is the CRC check value of all bytes of the third-layer message body.

[0054] The third layer protocol is used to sort the message frames and distribute them to different applications according to the message type to which they belong. It also receives the data blocks sent by the application layer, splits and reassembles the data blocks into message frames and sends them to the second layer protocol.

[0055] The application layer contains functional modules that parse messages and send data blocks to the third layer protocol.

[0056] The communication unit includes a Tiantong satellite antenna and a radio frequency module that are connected to each other. The Tiantong satellite antenna is used to transmit or receive radio frequency signals to the Tiantong satellite. The radio frequency module is used to perform frequency conversion, filtering, and power amplification processing on the radio frequency signals between the Tiantong satellite antenna and the Tiantong satellite, so that the radio frequency signals are amplified to meet the minimum requirements of the Tiantong satellite antenna port, and the satellite downlink signal is amplified and down-converted to the baseband. The baseband signal is then amplified by the amplifier, and the analog signal is converted into a digital signal through an analog-to-digital converter, and the digital signal is then sent to the baseband for processing; the radio frequency module includes a radio frequency integrated circuit (RF IC), a transmitting port (Tx transmitting port) connected to the output end of the radio frequency integrated circuit, a receiving port (Rx receiving port) connected to the input end of the radio frequency integrated circuit, and a switching switch connected to the transmitting port and the receiving port. The switching switch is connected to the Tiantong satellite antenna, and the radio frequency integrated circuit is connected to the main control unit, wherein the radio frequency integrated circuit model is RX6001B.

[0057] The interface unit includes a serial port and a satellite card respectively connected to the main control unit, wherein the serial port is connected to the physical interface module of the data acquisition module to realize the sending and receiving of data and instructions between the Tiantong satellite communication module and the data acquisition module, so as to realize the functions of indicating the sleep state and waking up from sleep.

[0058] The warning unit includes a motor, a buzzer, and a flash light respectively connected to the main control unit, and is used to issue a warning for exceeding the standard or abnormal data.

[0059] The interactive unit includes buttons and LEDs respectively connected to the main control unit, wherein the buttons are used to turn on and off the data acquisition and forwarding device, and the LEDs are used to indicate the network access status, and a green light indicates successful network access.

[0060] A communication method for a data acquisition and forwarding device based on a Tiantong satellite provided by an embodiment of the present invention, referring to Figure 5 Based on the data collection and forwarding device based on Tiantong satellite, data collection of the target area is completed, and data transmission and reception with the Tiantong satellite terminal are realized through the Tiantong satellite:

[0061] Step S1, respectively install satellite cards with corresponding card numbers in the data acquisition and forwarding device and the Tiantong satellite terminal, i.e., the Tiantong USIM card, and turn on the data acquisition and forwarding device and the Tiantong satellite terminal when they are in the preset position of the target area, and wait for the LED light indicating successful network access on the data acquisition device to light up. The network access of the Tiantong terminal can be checked through the status bar of the terminal to see whether the Tiantong terminal has successfully accessed the network, and then proceed to step S2;

[0062] Step S2, after the Tiantong satellite communication module is turned on and powered on to the network, the data sent by the data acquisition module is received through the UART interface of the data acquisition module, and the data is processed through the corresponding software data protocol, and the processed data is forwarded to the Tiantong satellite terminal through the Tiantong satellite in the form of a short message, wherein the number of short message transmissions, the time interval and the satellite card number of the Tiantong satellite terminal receiving the short message are all pre-set in the Tiantong satellite communication module in the data acquisition and forwarding device;

[0063] Step S3, when the data acquisition and forwarding device completes the preset number of short message sending times, it enters the standby state. If the Tiantong satellite terminal does not receive the corresponding short message for a period exceeding the preset time threshold, it also enters the standby state. The data acquisition and forwarding device in the standby state can be started at any time to work;

[0064] Step S4, after the data acquisition and forwarding device has been on standby for a preset time, it enters a sleep state for the purpose of saving power. If the data acquisition and forwarding device receives a preset activation short message, the data acquisition and forwarding device is awakened by sending a short message to the data acquisition and forwarding device through the Tiantong terminal. The sleep state requires the data acquisition and forwarding device to start in the standby state, and the radio frequency module of the data acquisition and forwarding device is turned off when in the sleep state;

[0065] Step S5, after the data acquisition and forwarding device is awakened, the Tiantong satellite communication module receives the data sent by the data acquisition module through the interface unit, extracts the information and packages it, and forwards it to the Tiantong satellite terminal in the form of a short message. After completing the preset number of transmissions, it enters the standby state;

[0066] Step S6: After the Tiantong satellite communication module enters the standby state, the Tiantong satellite terminal also successively enters the standby state, and repeats the data acquisition cycle process of steps S1 to S5 at a preset period.

[0067] In summary, the present invention provides a data acquisition and forwarding device and communication method based on the Tiantong satellite. Through the data acquisition and forwarding device, the Tiantong satellite mobile communication system can be used to expand the automatic forwarding function of the collected data without changing the physical structure of the data acquisition module. The Tiantong satellite communication module and the data acquisition module are connected via a wired connection to reliably and securely transmit data between the two. Through its sleep wake-up method, the power consumption of the mobile communication terminal and the Tiantong satellite communication module can be significantly reduced, and the use and standby time of the data acquisition and forwarding device can be extended. Through the customized Tiantong satellite data acquisition packaging and forwarding software, the fully automatic collection and forwarding of data can be realized, reducing human intervention, which is of particular significance for use in special regions and environments.

[0068] The embodiments of the present invention are described in detail above with reference to the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made within the knowledge scope of ordinary technicians in this field without departing from the purpose of the present invention.

Claims

1. A data collection and forwarding device based on Tiantong satellite, characterized in that: It includes a Tiantong satellite communication module and a data acquisition module which are interconnected and used for transmitting and receiving data with the Tiantong satellite terminal via the Tiantong satellite; The data acquisition module is used to collect data of the target area and transmit it to the Tiantong satellite communication module, including a physical interface module, the physical interface module includes at least two GPIO interfaces and at least one UART interface; and also includes a power supply for supplying power to the physical interface module; The Tiantong satellite communication module is used to receive the data sent by the data acquisition module, and after processing the data, send it to the Tiantong satellite terminal in the form of a short message based on a radio frequency signal, including a main control unit, and a communication unit, an interface unit, a power supply unit, a warning unit, a positioning unit and an interaction unit respectively connected to the main control unit, wherein the interface unit is connected to each interface of the physical interface module of the data acquisition module correspondingly; Based on the data collection and forwarding device based on Tiantong satellite, data collection of the target area is completed, and data transmission and reception with the Tiantong satellite terminal are realized through the Tiantong satellite, including the following steps: Step S1, respectively install satellite cards with corresponding card numbers in the data acquisition and forwarding device and the Tiantong satellite terminal, turn on the data acquisition and forwarding device and the Tiantong satellite terminal when they are in the preset position of the target area, and wait for the LED light on the data acquisition device indicating successful network access to light up, and then proceed to step S2; Step S2, after the Tiantong satellite communication module is turned on and powered on to the network, the data sent by the data acquisition module is received through the UART interface of the data acquisition module, and the processed data is forwarded to the Tiantong satellite terminal through the Tiantong satellite in the form of a short message, wherein the number of short message sending, the time interval and the satellite card number of the Tiantong satellite terminal receiving the short message are all pre-set in the Tiantong satellite communication module in the data acquisition and forwarding device; Step S3, when the data acquisition and forwarding device completes the preset number of short message transmissions, it enters the standby state. If the Tiantong satellite terminal does not receive the corresponding short message for a period exceeding the preset time threshold, it also enters the standby state; Step S4: After the data acquisition and forwarding device waits for a preset time, it enters a sleep state. If the data acquisition and forwarding device receives a preset activation short message, the data acquisition and forwarding device is awakened; Step S5, after the data acquisition and forwarding device is awakened, the Tiantong satellite communication module receives the data sent by the data acquisition module through the interface unit, extracts the information and packages it, and forwards it to the Tiantong satellite terminal in the form of a short message. After completing the preset number of transmissions, it enters the standby state; Step S6: After the Tiantong satellite communication module enters the standby state, the Tiantong satellite terminal also successively enters the standby state, and repeats the data acquisition cycle process of steps S1 to S5 at a preset period.

2. The data acquisition and forwarding device based on Tiantong satellite according to claim 1 is characterized in that: The main control unit includes a baseband processing module and an application processing module, and serial communication is adopted between the two. The serial communication is based on the serial communication protocol structure, which includes the serial interface physical layer, the second layer protocol, the third layer protocol, and the application layer from bottom to top. The baseband processing module is used to complete the implementation of the high-level protocol stack and the serial interface physical layer standard, and realize data interaction with the application processing module; the application processing module is used to realize the upper-layer application, the bottom-layer driver, and the peripheral management.

3. The data acquisition and forwarding device based on Tiantong satellite according to claim 2 is characterized in that: The serial interface physical layer in the serial communication protocol structure is the UART interface connected between the Tiantong satellite communication module and the data acquisition module, which transmits the data collected by the data acquisition module to the second layer protocol in the form of a message frame, wherein the message frame includes a message header, a message body, and a message tail; The second layer protocol is used to receive the message frame sent by the physical layer of the serial interface, make a response, and receive the message frame sent by the third layer protocol, package the message body in the message frame sent by the third layer protocol, and send the message frame to the physical layer of the serial interface; The third layer protocol is used to sort the message frames and distribute them to different applications according to the message type to which they belong. It also receives the data blocks sent by the application layer, splits and reassembles the data blocks into message frames and sends them to the second layer protocol. The application layer contains functional modules that parse messages and send data blocks to the third layer protocol.

4. The data acquisition and forwarding device based on Tiantong satellite according to claim 1 is characterized in that: The communication unit includes a Tiantong satellite antenna and a radio frequency module that are interconnected. The Tiantong satellite antenna is used to transmit or receive radio frequency signals to the Tiantong satellite. The radio frequency module is used to perform frequency conversion, filtering, and power amplification processing on the radio frequency signals between the Tiantong satellite antenna and the Tiantong satellite. The radio frequency module includes a radio frequency integrated circuit, a transmitting port connected to the output end of the radio frequency integrated circuit, a receiving port connected to the input end of the radio frequency integrated circuit, and a switching switch connected to the transmitting port and the receiving port. The switching switch is connected to the Tiantong satellite antenna, and the radio frequency integrated circuit is connected to the main control unit.

5. The data acquisition and forwarding device based on Tiantong satellite according to claim 1 is characterized in that: The interface unit includes a serial port and a satellite card respectively connected to the main control unit, wherein the serial port is connected to the physical interface module of the data acquisition module to realize the sending and receiving of data and instructions between the Tiantong satellite communication module and the data acquisition module.

6. The data acquisition and forwarding device based on Tiantong satellite according to claim 1 is characterized in that: The warning unit includes a motor, a buzzer, and a flash light respectively connected to the main control unit, and is used to issue a warning for exceeding the standard or abnormal data.

7. The data collection and forwarding device based on Tiantong satellite according to claim 1 is characterized in that: The interactive unit comprises a button and an LED respectively connected to the main control unit, wherein the button is used to turn on and off the data acquisition and forwarding device, and the LED is used to indicate the network access status.

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