Data communication terminal based on Beidou No.3 system

Abstract

The utility model discloses a data communication terminal based on a Beidou No.3 system, which comprises an upper cover and a base which are connected through a screw, a mainboard and the base are connected to a prefabricated hole site of the base through a screw, the mainboard is connected with a data interface, and a power supply is provided for equipment through the data interface. According to the utility model, the capacity of satellite signals is improved, the system resources are effectively saved, and the system cost is reduced.

Description

Technical Field

[0001] The utility model belongs to the technical field of satellite short message data communication of Beidou-3 system, and specifically relates to a data communication terminal based on Beidou-3 system. Background Art

[0002] The data communication terminal based on the BeiDou-3 system is an IoT terminal device that integrates the short message transmission and positioning functions of the BeiDou-3 system. It has a high internal design integration and low power consumption, and can meet the needs of users without other communication networks. The data communication terminal can be connected to a matching data acquisition terminal to realize the data receiving and sending functions and provide location positioning data. This product can be installed magnetically or by a pole. In order to adapt to harsh environments such as the wild, it has an IP67 protection level and is suitable for natural disaster monitoring and other fields.

[0003] At present, there are many devices for natural disaster monitoring in China, and most of them rely on mobile operator base stations for 4G network communication in terms of data communication. However, in practical applications, natural disaster monitoring has the following problems: under general conditions, sensors use wired communication, and the cable length is limited. Large-area monitoring requires the construction of multiple sites, which is expensive, has a long construction period, and is highly dependent on data transmission; wireless 4G network transmission relies heavily on operator signal coverage, and sparsely populated natural disaster monitoring points cannot achieve network coverage, and cannot be monitored in a timely manner. Coordinating with mobile operators to establish base stations has a long cycle and high cost, and information transmission may be interrupted in extreme weather. When natural disasters occur, it is easy to cause ground transmission facilities to be interrupted or damaged, resulting in the inability to return monitoring data in time when it is most needed to be transmitted back for effective support. The BeiDou-3 satellite independently developed by my country has achieved nationwide satellite network signal coverage, realizing a low-cost, wide-signal coverage, and reliable transmission communication method to help transmit natural disaster monitoring data. Therefore, in response to the difficulties in monitoring data transmission, this data communication terminal based on the BeiDou-3 system was developed. Utility Model Content

[0004] The purpose of the utility model is to provide a data communication terminal based on the BeiDou-3 system, which improves the capacity of satellite signals, while also effectively saving system resources and reducing system costs.

[0005] The technical solution adopted by the utility model is a data communication terminal based on the BeiDou-3 system, including an upper cover and a base connected by screws, a mainboard and the base are connected to prefabricated holes of the base by screws, and the mainboard is connected to a data docking interface, and power is provided to the device through the data docking interface.

[0006] The utility model is also characterized in that:

[0007] The motherboard includes the Fudan micro single-chip microcomputer FM33LC026N. Pin 1 of the Fudan micro single-chip microcomputer FM33LC026N is connected to the monitoring chip TPS3823-33DBVT. Pins 7 and 8 of the Fudan micro single-chip microcomputer FM33LC026N are connected to the RS232 chip SP3222EEA. Pins 20, 21, and 22 of the Fudan micro single-chip microcomputer FM33LC026N are connected to the RNSS Beidou module. Pins 28, 29, 30, 31, and 32 of the Fudan micro single-chip microcomputer FM33LC026N are connected to the Beidou short circuit The message communication module is connected, the 33 and 34 pins of the Fudan microcontroller FM33LC026N are connected to the LDO linear voltage regulator chip HT7533, the 41, 42, 43, and 44 pins of the Fudan microcontroller FM33LC026N are connected to the status display light group, the 56, 57, and 58 pins of the Fudan microcontroller FM33LC026N are connected to the RS485 bus transceiver chip SP3485EEN, and the 63 and 64 pins of the Fudan microcontroller FM33LC026N are connected to the simulation debugging and download interface.

[0008] The power supply is provided by the data acquisition terminal, or by an external battery and solar panel, or a DC12V adapter connected to the mains power supply.

[0009] The status display light group is provided with 4 LED lights, which are working status light LED1, communication status light LED2, data transceiver status light LED3, and debugging status light LED4. The working status light LED1, communication status light LED2, data transceiver status light LED3, and debugging status light LED4 are respectively connected to pins 44, 43, 42, and 41 of the Fudan microcontroller FM33LC026N.

[0010] The RNSS Beidou module is connected to the RF bridge chip RCP1500Q03, and the RF bridge chip is connected to the satellite antenna TX-B45X11 to realize the data upload function. A satellite communication card is installed in the flip-type SIM card holder. The flip-type SIM card holder is connected to the RF bridge chip RCP1500Q03 and the Beidou short message communication module to realize the Beidou-3 communication function.

[0011] The LDO linear voltage regulator chip is connected to the switching power supply chip LGS5148, the switching power supply chip LGS5148 is connected to the 4*2P connector, the 4*2P connector is connected to the data interface, the switching power supply chip LGS5148 controls the open circuit and short circuit of the power supply through the data interface, the RS232 interface is also connected to the 4*2P connector, and the instructions of the Fudan microcontroller FM33LC026N are sent and displayed through the data interface. The RS485 bus transceiver chip is also connected to the 4*2P connector, and the data acquisition terminal acquisition function is realized through the data interface.

[0012] The model of the RNSS Beidou module is TAU1202. Pin 1 of the RNSS Beidou module is grounded, and pins 2, UOUT0, and 3, UIN0 are connected to pins 20 and 21 of the Fudan micro-microcontroller FM33LC026N, respectively, to realize the communication function between the Fudan micro-microcontroller FM33LC026N and the TAU1202 chip. Pin 8 of the RNSS Beidou module is connected to the power supply. After the overall voltage is stabilized by the LDO linear voltage regulator chip, the RNSS Beidou module is powered by the Fudan micro-microcontroller FM33LC026N. The ideal power supply voltage of the RNSS Beidou module is fully considered, and the signal coupling of the power supply voltage is performed by welding a 100n non-polar chip capacitor at the C33 position in the circuit to prevent the interference signal that may exist during the signal transmission process. The use of non-polar chip capacitors can isolate the two signals to ensure signal purity.

[0013] The model of the Beidou short message communication module is the XM130 chip. Pins 1 and 6 of the XM130 chip are grounded, and pins 2 and 3 are respectively connected to pins 31 and 32 of the Fudan microcontroller FM33LC026N, thereby realizing the communication function between the Fudan microcontroller FM33LC026N and the XM130 chip. Pins 7 and 8 of the XM130 chip are connected to the flip-type SIM card holder, and are connected to the satellite communication card through the flip-type SIM card holder. Pin 18 RFOUT of the Beidou short message communication module is connected to the RF bridge chip, and pin 35 RF-IN of the Beidou short message communication module is connected to the satellite antenna TX-B45X11.

[0014] The beneficial effect of the utility model is that it focuses on monitoring sites such as natural disaster risk areas, geological disasters, bridges and tunnels, and 4G networks without ground base stations. Through the internal design of a communication terminal with high integration and low power consumption for satellite short message communication, it solves the problem of not being able to receive data from on-site monitoring equipment in 4G networks without ground base stations, and uses the Beidou short message format to increase the capacity of satellite channel signals, while also effectively saving system resources and reducing system costs. This product can be installed magnetically or with a pole to adapt to harsh environments such as the wild. It has an IP67 protection level and is suitable for natural disaster monitoring and other fields. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a utility model data transmission schematic diagram of a data communication terminal based on the BeiDou-3 system;

[0016] Figure 2 This is a utility model structural diagram of a data communication terminal based on the BeiDou-3 system;

[0017] Figure 3 This is a utility model, a data communication terminal chip interface allocation diagram based on the BeiDou-3 system;

[0018] Figure 4 This is a utility model schematic diagram of the mainboard structure of a data communication terminal based on the BeiDou-3 system;

[0019] Figure 5 This is a utility model, a data communication terminal RNSS Beidou module TAU1202 working circuit diagram based on Beidou-3 system;

[0020] Figure 6 The utility model discloses a working circuit diagram of a Beidou communication module of a data communication terminal based on the Beidou-3 system.

[0021] In the figure, 1. upper cover, 2. main board, 3. base, 4. data docking interface, 5. monitoring chip TPS3823-33DBVT, 6. RS232 chip SP3222EEA, 7. RNSS Beidou module TAU1202, 8. Beidou short message communication module XM130, 9. LDO linear voltage regulator chip HT7533, 10. status display light group, 11. RS485 chip SP3485EEN, 12. simulation debugging and download interface. DETAILED DESCRIPTION

[0022] The utility model is described in detail below with reference to the accompanying drawings and specific implementation modes.

[0023] In the utility model, combined with Figure 1The data docking interface 4 in the data communication terminal based on the BeiDou-3 system is connected to the data acquisition terminal, and the data collected by one or more data acquisition terminals is obtained through the data docking interface 4. The BeiDou-3 system data communication terminal transmits the data to the BeiDou-3 system satellite in the form of a short message, and the BeiDou-3 system satellite transmits the data to the satellite master control cloud server, and the satellite master control cloud server transmits the data to the data receiving and parsing application platform, realizing the satellite short message communication application of the data and solving the problem of normal data transmission when there is no mobile operation signal on site.

[0024] In the utility model, combined with Figure 2 In the data communication terminal of the BeiDou-3 system, the upper cover 1 and the base 3 are connected by screws, the mainboard 2 and the base 3 are connected to the prefabricated holes of the base 3 by screws, the mainboard 2 is connected to the data docking interface 4, the data communication terminal of the BeiDou-3 system is powered by the data docking interface 4, and the monitoring data of the data acquisition terminal is read by the data docking interface 4. The power supply of the data communication terminal of the BeiDou-3 system can be provided by the data acquisition terminal, or by an external battery and solar panel, or a DC12V adapter connected to the mains power supply, without the need for boosting or reducing the voltage to meet the two power supply methods. The installation method adopts magnetic suction or pole mounting to meet the installation and use under different installation conditions in the field. In terms of structural design, the material selection, equipment strength, protection level, sun protection and UV discoloration prevention measures are fully considered to meet the use in harsh environments such as long-term outdoor use, and have an IP67 protection level.

[0025] In the utility model, combined with Figure 3The motherboard 2 contains the Fudan microcontroller FM33LC026N, which has 64 pins. Through physical distribution, the 1st pin of the Fudan microcontroller FM33LC026N is connected to the monitoring chip TPS3823-33DBVT 5, and the 7th and 8th pins of the Fudan microcontroller FM33LC026N are connected to the RS232 chip SP3222EEA. 6, the 20, 21, 22 pins of the Fudan micro-MCU FM33LC026N are connected to the RNSS Beidou module 7, the 28, 29, 30, 31, 32 pins of the Fudan micro-MCU FM33LC026N are connected to the Beidou short message communication module 8, the 33, 34 pins of the Fudan micro-MCU FM33LC026N are connected to the LDO linear voltage regulator chip HT75339, the 41, 42, 43, 44 pins of the Fudan micro-MCU FM33LC026N are connected to the status display light group 10, the 56, 57, 58 pins of the Fudan micro-MCU FM33LC026N are connected to the RS485 bus transceiver chip SP3485EEN 11, and the 63, 64 pins of the Fudan micro-MCU FM33LC026N are connected to the simulation debugging and download interface 12. The data acquisition and transmission functions are realized through the above connections through physical allocation. The design fully considers the performance advantages of Fudan microcontroller FM33LC026N. The pin design distribution is combined with the structure and connection method of mainboard 2 to save board space and line direction in the best way. Mainboard 2 is highly integrated to reduce its overall size and space occupancy. At the same time, it also reduces the volume of the data communication terminal of the BeiDou-3 system and miniaturizes the data communication terminal of the BeiDou-3 system.

[0026] In the utility model, combined with Figure 3 , the Fudan micro single-chip computer FM33LC026N is connected to the status display light group 10, wherein the status display light group 10 is provided with 4 LED lights, and their functions are as follows: LED1 is a working status light connected to the 44th pin of the Fudan micro single-chip computer FM33LC026N, LED2 is a communication status light connected to the 43rd pin of the Fudan micro single-chip computer FM33LC026N, LED3 is a data transceiver status light connected to the 42nd pin of the Fudan micro single-chip computer FM33LC026N, and LED4 is a debugging status light connected to the 41st pin of the Fudan micro single-chip computer FM33LC026N. When the terminal is working normally, the status light LED1 is always on, and it is off when it is not working. The communication status light LED2 is always on when communicating, and it is off when not working. The data transceiver status light LED3 flashes during the transceiver process, and it is off when there is no transceiver. The debugging status light LED4 is always on when the computer gives instructions, and it is off at other times.

[0027] In the utility model, combined with Figure 4, the flip-type SIM card holder and the RF bridge chip RCP1500Q03 are simultaneously connected to the Beidou short message communication module 8. The satellite communication card is installed in the flip-type SIM card holder, and the RF bridge chip is connected to the satellite antenna TX-B45X11 to realize the data upload function, which can meet the simultaneous transmission and reception of 1000 Chinese characters (2000 characters), fully meeting the transmission of most data in natural disaster monitoring, such as the displacement data of the crack meter, the tilt data and acceleration change data of the inclination acceleration device, the cumulative change data of the mud level meter, and the soil temperature, humidity and moisture content data of the moisture content. The RF bridge chip is connected to the RNSS Beidou module 7 to obtain positioning data, the LDO linear voltage regulator chip 9 is connected to the switching power supply chip LGS5148, the switching power supply chip LGS5148 is connected to the 4*2P connector, the 4*2P connector is connected to the data interface 4, the power supply controls the open circuit and short circuit of the power supply through the switching power supply chip LGS5148 through the data interface 4, after the open circuit, it is stabilized by the LDO linear voltage regulator chip 9 and then works normally through the Fudan microcontroller FM33LC026N. The LDO linear voltage regulator chip is mainly used to avoid damage to the mainboard 2 due to power surges. The RS232 interface is also connected to the 4*2P connector, and the instructions are sent and displayed to the Fudan micro-chip microcomputer FM33LC026N through the data interface 4. The RS485 bus transceiver chip is also connected to the 4*2P connector, and the data acquisition terminal acquisition function is realized through the data interface 4; the simulation debugging and downloading interface 12 is connected to the 6P connector, and the 6P connector is connected to the external J-LINK simulator to debug the operation of the Fudan micro-chip microcomputer FM33LC026N and download the operation status. The Fudan micro-chip microcomputer FM33LC026N is connected to the monitoring chip TPS3823-33DBVT 5, which is commonly known as the "watchdog". It is a timer circuit with an input and an output, where the input is called feeding the dog, and the output is generally connected to the Fudan micro-chip microcomputer FM33LC026N to regularly check the internal situation of the chip, and send a restart signal to the chip once an error occurs. Prevent the motherboard 2 from receiving interference from the external battery field during operation, causing data confusion in the registers and memory of the motherboard 2, resulting in command execution errors or falling into an infinite loop and being unable to work normally.

[0028] In the utility model, combined with Figure 5,RNSS Beidou module 7 uses a chip model TAU1202. Pin 1 of the TAU1202 chip is grounded, and pins 2 and 3 are connected to pins 20 and 21 of the Fudan microcontroller FM33LC026N to perform the communication function between the Fudan microcontroller FM33LC026N and the TAU1202 chip. The RNSS Beidou module 7 receives power through pin 8. After the overall voltage is stabilized by the LDO linear voltage regulator chip 9, the ideal power supply voltage of the RNSS Beidou module 7 is fully considered. The 100n non-polar chip capacitor is welded at the C33 position in the circuit to couple the power supply voltage to prevent the interference signal that may exist during the signal transmission process. The non-polar chip capacitor can isolate the two signals to ensure the signal purity. And the signal in the circuit is filtered to eliminate noise and interference. Solder a 10uF / 10V tantalum chip capacitor at the circuit C45 position to couple and filter the circuit to ensure the stability of the circuit and adapt to the optimal voltage of the RNSS Beidou module 7. The 9-pin PRRSTX of the TAU1202 chip is connected to the transistor Q1-NPN type SS8050, which is responsible for current amplification when the input is low level for more than 100ms. When the power supply is at a low level for a long time, the RNSS Beidou module 7 is reset and reset. The 14-pin ANT-BIAS of the TAU1202 chip is connected to the inductor L2 and then connected to the 11-pin RF-IN of the TAU1202 chip to form the main circuit and connect the RF bridge chip RCP1500Q03. The RF bridge chip RCP1500Q03 is connected to the satellite antenna TX-B45X11 to obtain positioning data.

[0029] In the utility model, combined with Figure 6 The model adopted by Beidou short message communication module 8 is XM130 chip, XM130 chip pin 1 is grounded, pins 2 and 3 are connected to pins 31 and 32 of Fudan micro single chip FM33LC026N, realizing the communication function between Fudan micro single chip FM33LC026N and XM130 chip, XM130 chip pin 6 is grounded, pins 7 and 8 are connected to the flip-type SIM card holder working circuit, by installing a satellite communication card in the flip-type SIM card holder, the utility model completes the functions of satellite short message input and output and satellite communication through the connection and installation of pins. 18-pin RFOUT of Beidou short message communication module 8 is connected to the radio frequency bridge chip, and 35-pin RF-IN of Beidou short message communication module 8 is connected to the satellite antenna TX-B45X11. In terms of power supply, the short message communication module 8 uses 2 100uF / 10V chip tantalum capacitors and 1u non-polar chip capacitors and 100n non-polar chip capacitors to perform coupling and filtering functions in the circuit to ensure the stability of the circuit and ensure that the chip can work normally in various harsh environments.

[0030] Example 1

[0031] In the utility model, combined with Figure 2 In the data communication terminal of the BeiDou-3 system, the upper cover 1 and the base 3 are connected by screws, the mainboard 2 and the base 3 are connected to the prefabricated holes of the base 3 by screws, the mainboard 2 is connected to the data docking interface 4, the data communication terminal of the BeiDou-3 system is powered by the data docking interface 4, and the monitoring data of the data acquisition terminal is read by the data docking interface 4. The power supply of the data communication terminal of the BeiDou-3 system can be provided by the data acquisition terminal, or by an external battery and solar panel, or a DC12V adapter connected to the mains power supply, without the need for boosting or reducing the voltage to meet the two power supply methods. The installation method adopts magnetic suction or pole mounting to meet the installation and use under different installation conditions in the field. In terms of structural design, the material selection, equipment strength, protection level, sun protection and UV discoloration prevention measures are fully considered to meet the use in harsh environments such as long-term outdoor use, and have an IP67 protection level.

[0032] In the utility model, combined with Figure 3 The motherboard 2 contains the Fudan microcontroller FM33LC026N, which has 64 pins. Through physical distribution, the 1st pin of the Fudan microcontroller FM33LC026N is connected to the monitoring chip TPS3823-33DBVT 5, and the 7th and 8th pins of the Fudan microcontroller FM33LC026N are connected to the RS232 chip SP3222EEA. 6, the 20, 21, 22 pins of the Fudan micro-MCU FM33LC026N are connected to the RNSS Beidou module 7, the 28, 29, 30, 31, 32 pins of the Fudan micro-MCU FM33LC026N are connected to the Beidou short message communication module 8, the 33, 34 pins of the Fudan micro-MCU FM33LC026N are connected to the LDO linear voltage regulator chip HT75339, the 41, 42, 43, 44 pins of the Fudan micro-MCU FM33LC026N are connected to the status display light group 10, the 56, 57, 58 pins of the Fudan micro-MCU FM33LC026N are connected to the RS485 bus transceiver chip SP3485EEN 11, and the 63, 64 pins of the Fudan micro-MCU FM33LC026N are connected to the simulation debugging and download interface 12. The data acquisition and transmission functions are realized through the above connections through physical allocation. The design fully considers the performance advantages of Fudan microcontroller FM33LC026N. The pin design distribution is combined with the structure and connection method of mainboard 2 to save board space and line direction in the best way. Mainboard 2 is highly integrated to reduce its overall size and space occupancy. At the same time, it also reduces the volume of the data communication terminal of the BeiDou-3 system and miniaturizes the data communication terminal of the BeiDou-3 system.

[0033] In the utility model, combined with Figure 4 , the flip-type SIM card holder and the RF bridge chip RCP1500Q03 are simultaneously connected to the Beidou short message communication module 8. The satellite communication card is installed in the flip-type SIM card holder, and the RF bridge chip is connected to the satellite antenna TX-B45X11 to realize the data upload function, which can meet the simultaneous transmission and reception of 1000 Chinese characters (2000 characters), fully meeting the transmission of most data in natural disaster monitoring, such as the displacement data of the crack meter, the tilt data and acceleration change data of the inclination acceleration device, the cumulative change data of the mud level meter, and the soil temperature, humidity and moisture content data of the moisture content. The RF bridge chip is connected to the RNSS Beidou module 7 to obtain positioning data, the LDO linear voltage regulator chip 9 is connected to the switching power supply chip LGS5148, the switching power supply chip LGS5148 is connected to the 4*2P connector, the 4*2P connector is connected to the data interface 4, the power supply controls the open circuit and short circuit of the power supply through the switching power supply chip LGS5148 through the data interface 4, after the open circuit, it is stabilized by the LDO linear voltage regulator chip 9 and then works normally through the Fudan microcontroller FM33LC026N. The LDO linear voltage regulator chip is mainly used to avoid damage to the mainboard 2 due to power surges. The RS232 interface is also connected to the 4*2P connector, and the instructions are sent and displayed to the Fudan micro-chip microcomputer FM33LC026N through the data interface 4. The RS485 bus transceiver chip is also connected to the 4*2P connector, and the data acquisition terminal acquisition function is realized through the data interface 4; the simulation debugging and downloading interface 12 is connected to the 6P connector, and the 6P connector is connected to the external J-LINK simulator to debug the operation of the Fudan micro-chip microcomputer FM33LC026N and download the operation status. The Fudan micro-chip microcomputer FM33LC026N is connected to the monitoring chip TPS3823-33DBVT 5, which is commonly known as the "watchdog". It is a timer circuit with an input and an output, where the input is called feeding the dog, and the output is generally connected to the Fudan micro-chip microcomputer FM33LC026N to regularly check the internal situation of the chip, and send a restart signal to the chip once an error occurs. Prevent the motherboard 2 from receiving interference from the external battery field during operation, causing data confusion in the registers and memory of the motherboard 2, resulting in command execution errors or falling into an infinite loop and being unable to work normally.

[0034] In the utility model, combined with Figure 5,RNSS Beidou module 7 uses a chip model TAU1202. Pin 1 of the TAU1202 chip is grounded, and pins 2 and 3 are connected to pins 20 and 21 of the Fudan microcontroller FM33LC026N to perform the communication function between the Fudan microcontroller FM33LC026N and the TAU1202 chip. The RNSS Beidou module 7 receives power through pin 8. After the overall voltage is stabilized by the LDO linear voltage regulator chip 9, the ideal power supply voltage of the RNSS Beidou module 7 is fully considered. The 100n non-polar chip capacitor is welded at the C33 position in the circuit to couple the power supply voltage to prevent the interference signal that may exist during the signal transmission process. The non-polar chip capacitor can isolate the two signals to ensure the signal purity. And the signal in the circuit is filtered to eliminate noise and interference. Solder a 10uF / 10V tantalum chip capacitor at the circuit C45 position to couple and filter the circuit to ensure the stability of the circuit and adapt to the optimal voltage of the RNSS Beidou module 7. The 9-pin PRRSTX of the TAU1202 chip is connected to the transistor Q1-NPN type SS8050, which is responsible for current amplification when the input is low level for more than 100ms. When the power supply is at a low level for a long time, the RNSS Beidou module 7 is reset and reset. The 14-pin ANT-BIAS of the TAU1202 chip is connected to the inductor L2 and then connected to the 11-pin RF-IN of the TAU1202 chip to form the main circuit and connect the RF bridge chip RCP1500Q03. The RF bridge chip RCP1500Q03 is connected to the satellite antenna TX-B45X11 to obtain positioning data.

[0035] In the utility model, combined with Figure 6 The model adopted by Beidou short message communication module 8 is XM130 chip, XM130 chip pin 1 is grounded, pins 2 and 3 are connected to pins 31 and 32 of Fudan micro single chip FM33LC026N, realizing the communication function between Fudan micro single chip FM33LC026N and XM130 chip, XM130 chip pin 6 is grounded, pins 7 and 8 are connected to the flip-type SIM card holder working circuit, by installing a satellite communication card in the flip-type SIM card holder, the utility model completes the functions of satellite short message input and output and satellite communication through the connection and installation of pins. 18-pin RFOUT of Beidou short message communication module 8 is connected to the radio frequency bridge chip, and 35-pin RF-IN of Beidou short message communication module 8 is connected to the satellite antenna TX-B45X11. In terms of power supply, the short message communication module 8 uses 2 100uF / 10V chip tantalum capacitors and 1u non-polar chip capacitors and 100n non-polar chip capacitors to perform coupling and filtering functions in the circuit to ensure the stability of the circuit and ensure that the chip can work normally in various harsh environments.

[0036] Example 2

[0037] In the utility model, combined with Figure 2 In the data communication terminal of the BeiDou-3 system, the upper cover 1 and the base 3 are connected by screws, the mainboard 2 and the base 3 are connected to the prefabricated holes of the base 3 by screws, the mainboard 2 is connected to the data interface 4, the data communication terminal of the BeiDou-3 system is powered by the data interface 4, and the monitoring data of the data acquisition terminal is read by the data interface 4. The power supply of the data communication terminal of the BeiDou-3 system can be provided by the data acquisition terminal, or it can be powered by an external battery + solar panel or a DC12V adapter connected to the mains power supply, without the need for boosting or reducing the voltage to meet the two power supply methods. In terms of installation, magnetic suction or pole mounting is adopted to meet the installation and use under different installation conditions in the field. In terms of structural design, material selection, equipment strength, protection level, sun protection and UV discoloration prevention measures are fully considered to meet the use in harsh environments such as long-term outdoor use, and it has an IP67 protection level.

[0038] In the utility model, combined with Figure 3 The motherboard 2 contains the Fudan microcontroller FM33LC026N, which has 64 pins. Through physical distribution, the 1st pin of the Fudan microcontroller FM33LC026N is connected to the monitoring chip TPS3823-33DBVT 5, and the 7th and 8th pins of the Fudan microcontroller FM33LC026N are connected to the RS232 chip SP3222EEA. 6, the 20, 21, 22 pins of the Fudan micro-MCU FM33LC026N are connected to the RNSS Beidou module 7, the 28, 29, 30, 31, 32 pins of the Fudan micro-MCU FM33LC026N are connected to the Beidou short message communication module 8, the 33, 34 pins of the Fudan micro-MCU FM33LC026N are connected to the LDO linear voltage regulator chip HT75339, the 41, 42, 43, 44 pins of the Fudan micro-MCU FM33LC026N are connected to the status display light group 10, the 56, 57, 58 pins of the Fudan micro-MCU FM33LC026N are connected to the RS485 bus transceiver chip SP3485EEN 11, and the 63, 64 pins of the Fudan micro-MCU FM33LC026N are connected to the simulation debugging and download interface 12. The data acquisition and transmission functions are realized through the above connections through physical allocation. The design fully considers the performance advantages of Fudan microcontroller FM33LC026N. The pin design distribution is combined with the structure and connection method of mainboard 2 to save board space and line direction in the best way. Mainboard 2 is highly integrated to reduce its overall size and space occupancy. At the same time, it also reduces the volume of the data communication terminal of the BeiDou-3 system and miniaturizes the data communication terminal of the BeiDou-3 system.

[0039] In the utility model, combined with Figure 3 , the Fudan micro single-chip computer FM33LC026N is connected to the status display light group 10, wherein the status display light group 10 is provided with 4 LED lights, and their functions are as follows: LED1 is a working status light connected to the 44th pin of the Fudan micro single-chip computer FM33LC026N, LED2 is a communication status light connected to the 43rd pin of the Fudan micro single-chip computer FM33LC026N, LED3 is a data transceiver status light connected to the 42nd pin of the Fudan micro single-chip computer FM33LC026N, and LED4 is a debugging status light connected to the 41st pin of the Fudan micro single-chip computer FM33LC026N. When the terminal is working normally, the status light LED1 is always on, and it is off when it is not working. The communication status light LED2 is always on when communicating, and it is off when not working. The data transceiver status light LED3 flashes during the transceiver process, and it is off when there is no transceiver. The debugging status light LED4 is always on when the computer gives instructions, and it is off at other times.

[0040] In the utility model, combined with Figure 5 ,RNSS Beidou module 7 uses a chip model TAU1202. Pin 1 of the TAU1202 chip is grounded, and pins 2 and 3 are connected to pins 20 and 21 of the Fudan microcontroller FM33LC026N to perform the communication function between the Fudan microcontroller FM33LC026N and the TAU1202 chip. The RNSS Beidou module 7 receives power through pin 8. After the overall voltage is stabilized by the LDO linear voltage regulator chip 9, the ideal power supply voltage of the RNSS Beidou module 7 is fully considered. The 100n non-polar chip capacitor is welded at the C33 position in the circuit to couple the power supply voltage to prevent the interference signal that may exist during the signal transmission process. The non-polar chip capacitor can isolate the two signals to ensure the signal purity. And the signal in the circuit is filtered to eliminate noise and interference. Solder a 10uF / 10V tantalum chip capacitor at the circuit C45 position to couple and filter the circuit to ensure the stability of the circuit and adapt to the optimal voltage of the RNSS Beidou module 7. The 9-pin PRRSTX of the TAU1202 chip is connected to the transistor Q1-NPN type SS8050, which is responsible for current amplification when the input is low level for more than 100ms. When the power supply is at a low level for a long time, the RNSS Beidou module 7 is reset and reset. The 14-pin ANT-BIAS of the TAU1202 chip is connected to the inductor L2 and then connected to the 11-pin RF-IN of the TAU1202 chip to form the main circuit and connect the RF bridge chip RCP1500Q03. The RF bridge chip RCP1500Q03 is connected to the satellite antenna TX-B45X11 to obtain positioning data.

[0041] In the utility model, combined with Figure 6 The model adopted by Beidou short message communication module 8 is XM130 chip, XM130 chip pin 1 is grounded, pins 2 and 3 are connected to pins 31 and 32 of Fudan micro single chip FM33LC026N, realizing the communication function between Fudan micro single chip FM33LC026N and XM130 chip, XM130 chip pin 6 is grounded, pins 7 and 8 are connected to the flip-type SIM card holder working circuit, by installing a satellite communication card in the flip-type SIM card holder, the utility model completes the functions of satellite short message input and output and satellite communication through the connection and installation of pins. 18-pin RFOUT of Beidou short message communication module 8 is connected to the radio frequency bridge chip, and 35-pin RF-IN of Beidou short message communication module 8 is connected to the satellite antenna TX-B45X11. In terms of power supply, the short message communication module 8 uses 2 100uF / 10V chip tantalum capacitors and 1u non-polar chip capacitors and 100n non-polar chip capacitors to perform coupling and filtering functions in the circuit to ensure the stability of the circuit and ensure that the chip can work normally in various harsh environments.

[0042] Example 3

[0043] In the utility model, combined with Figure 2 In the data communication terminal of the BeiDou-3 system, the upper cover 1 and the base 3 are connected by screws, the mainboard 2 and the base 3 are connected to the prefabricated holes of the base 3 by screws, the mainboard 2 is connected to the data interface 4, the data communication terminal of the BeiDou-3 system is powered by the data interface 4, and the monitoring data of the data acquisition terminal is read by the data interface 4. The power supply of the data communication terminal of the BeiDou-3 system can be provided by the data acquisition terminal, or it can be powered by an external battery + solar panel or a DC12V adapter connected to the mains power supply, without the need for boosting or reducing the voltage to meet the two power supply methods. In terms of installation, magnetic suction or pole mounting is adopted to meet the installation and use under different installation conditions in the field. In terms of structural design, material selection, equipment strength, protection level, sun protection and UV discoloration prevention measures are fully considered to meet the use in harsh environments such as long-term outdoor use, and it has an IP67 protection level.

[0044] In the utility model, combined with Figure 3The motherboard 2 contains the Fudan microcontroller FM33LC026N, which has 64 pins. Through physical distribution, the 1st pin of the Fudan microcontroller FM33LC026N is connected to the monitoring chip TPS3823-33DBVT 5, and the 7th and 8th pins of the Fudan microcontroller FM33LC026N are connected to the RS232 chip SP3222EEA. 6, the 20, 21, 22 pins of the Fudan micro-MCU FM33LC026N are connected to the RNSS Beidou module 7, the 28, 29, 30, 31, 32 pins of the Fudan micro-MCU FM33LC026N are connected to the Beidou short message communication module 8, the 33, 34 pins of the Fudan micro-MCU FM33LC026N are connected to the LDO linear voltage regulator chip HT75339, the 41, 42, 43, 44 pins of the Fudan micro-MCU FM33LC026N are connected to the status display light group 10, the 56, 57, 58 pins of the Fudan micro-MCU FM33LC026N are connected to the RS485 bus transceiver chip SP3485EEN 11, and the 63, 64 pins of the Fudan micro-MCU FM33LC026N are connected to the simulation debugging and download interface 12. The data acquisition and transmission functions are realized through the above connections through physical allocation. The design fully considers the performance advantages of Fudan microcontroller FM33LC026N. The pin design distribution is combined with the structure and connection method of mainboard 2 to save board space and line direction in the best way. Mainboard 2 is highly integrated to reduce its overall size and space occupancy. At the same time, it also reduces the volume of the data communication terminal of the BeiDou-3 system and miniaturizes the data communication terminal of the BeiDou-3 system.

[0045] In the utility model, combined with Figure 3 , the Fudan micro single-chip computer FM33LC026N is connected to the status display light group 10, wherein the status display light group 10 is provided with 4 LED lights, and their functions are as follows: LED1 is a working status light connected to the 44th pin of the Fudan micro single-chip computer FM33LC026N, LED2 is a communication status light connected to the 43rd pin of the Fudan micro single-chip computer FM33LC026N, LED3 is a data transceiver status light connected to the 42nd pin of the Fudan micro single-chip computer FM33LC026N, and LED4 is a debugging status light connected to the 41st pin of the Fudan micro single-chip computer FM33LC026N. When the terminal is working normally, the status light LED1 is always on, and it is off when it is not working. The communication status light LED2 is always on when communicating, and it is off when not working. The data transceiver status light LED3 flashes during the transceiver process, and it is off when there is no transceiver. The debugging status light LED4 is always on when the computer gives instructions, and it is off at other times.

[0046] In the utility model, combined with Figure 4, the flip-type SIM card holder and the RF bridge chip RCP1500Q03 are simultaneously connected to the Beidou short message communication module 8. The satellite communication card is installed in the flip-type SIM card holder, and the RF bridge chip is connected to the satellite antenna TX-B45X11 to realize the data upload function, which can meet the simultaneous transmission and reception of 1000 Chinese characters (2000 characters), fully meeting the transmission of most data in natural disaster monitoring, such as the displacement data of the crack meter, the tilt data and acceleration change data of the inclination acceleration device, the cumulative change data of the mud level meter, and the soil temperature, humidity and moisture content data of the moisture content. The RF bridge chip is connected to the RNSS Beidou module 7 to obtain positioning data, the LDO linear voltage regulator chip 9 is connected to the switching power supply chip LGS5148, the switching power supply chip LGS5148 is connected to the 4*2P connector, the 4*2P connector is connected to the data interface 4, the power supply controls the open circuit and short circuit of the power supply through the switching power supply chip LGS5148 through the data interface 4, after the open circuit, it is stabilized by the LDO linear voltage regulator chip 9 and then works normally through the Fudan microcontroller FM33LC026N. The LDO linear voltage regulator chip is mainly used to avoid damage to the mainboard 2 due to power surges. The RS232 interface is also connected to the 4*2P connector, and the instructions are sent and displayed to the Fudan micro-chip microcomputer FM33LC026N through the data interface 4. The RS485 bus transceiver chip is also connected to the 4*2P connector, and the data acquisition terminal acquisition function is realized through the data interface 4; the simulation debugging and downloading interface 12 is connected to the 6P connector, and the 6P connector is connected to the external J-LINK simulator to debug the operation of the Fudan micro-chip microcomputer FM33LC026N and download the operation status. The Fudan micro-chip microcomputer FM33LC026N is connected to the monitoring chip TPS3823-33DBVT 5, which is commonly known as the "watchdog". It is a timer circuit with an input and an output, where the input is called feeding the dog, and the output is generally connected to the Fudan micro-chip microcomputer FM33LC026N to regularly check the internal situation of the chip, and send a restart signal to the chip once an error occurs. Prevent the motherboard 2 from receiving interference from the external battery field during operation, causing data confusion in the registers and memory of the motherboard 2, resulting in command execution errors or falling into an infinite loop and being unable to work normally.

[0047] In the utility model, combined with Figure 5,RNSS Beidou module 7 uses a chip model TAU1202. Pin 1 of the TAU1202 chip is grounded, and pins 2 and 3 are connected to pins 20 and 21 of the Fudan microcontroller FM33LC026N to perform the communication function between the Fudan microcontroller FM33LC026N and the TAU1202 chip. The RNSS Beidou module 7 receives power through pin 8. After the overall voltage is stabilized by the LDO linear voltage regulator chip 9, the ideal power supply voltage of the RNSS Beidou module 7 is fully considered. The 100n non-polar chip capacitor is welded at the C33 position in the circuit to couple the power supply voltage to prevent the interference signal that may exist during the signal transmission process. The non-polar chip capacitor can isolate the two signals to ensure the signal purity. And the signal in the circuit is filtered to eliminate noise and interference. Solder a 10uF / 10V tantalum chip capacitor at the circuit C45 position to couple and filter the circuit to ensure the stability of the circuit and adapt to the optimal voltage of the RNSS Beidou module 7. The 9-pin PRRSTX of the TAU1202 chip is connected to the transistor Q1-NPN type SS8050, which is responsible for current amplification when the input is low level for more than 100ms. When the power supply is at a low level for a long time, the RNSS Beidou module 7 is reset and reset. The 14-pin ANT-BIAS of the TAU1202 chip is connected to the inductor L2 and then connected to the 11-pin RF-IN of the TAU1202 chip to form the main circuit and connect the RF bridge chip RCP1500Q03. The RF bridge chip RCP1500Q03 is connected to the satellite antenna TX-B45X11 to obtain positioning data.

[0048] The utility model adopts a high-integration, low-power multi-select power supply mode and multiple data acquisition terminals for connecting collection and transmission in terms of design. The flexible magnetic or pole-type installation method increases the application scenarios of the equipment and has an IP67 protection level. It not only solves the dependence of monitoring data transmission on the signal coverage of 4G network operators, but also solves the problem of data communication when there is no 4G network or the 4G base station is damaged. The rapid transmission through short message technology increases the capacity of satellite signals, while also effectively saving system resources and reducing system costs. It further guarantees the integrity, timeliness and uninterruptedness of monitoring data transmission, and provides reliable data resources for the study of disaster conditions after disasters. It realizes a communication method with low price, wide signal coverage and reliable transmission to assist in the transmission of natural disaster monitoring data.

Claims

1. A data communication terminal based on the BeiDou-3 system, characterized in that: The device comprises an upper cover (1) and a base (3) connected by screws, a main board (2) and the base (3) connected to prefabricated holes of the base (3) by screws, the main board (2) being connected to a data interface (4), and power being provided to the device via the data interface (4), the main board (2) comprising a Fudan micro single-chip microcomputer FM33LC026N, pin 1 of the Fudan micro single-chip microcomputer FM33LC026N being connected to a monitoring chip TPS3823-33DBVT (5), pins 7 and 8 of the Fudan micro single-chip microcomputer FM33LC026N being connected to an RS232 chip SP3222EEA (6), and pins 20, 21, and 22 of the Fudan micro single-chip microcomputer FM33LC026N being connected to an RNSS Beidou module (7 ), pins 28, 29, 30, 31, and 32 of the Fudan microcontroller FM33LC026N are connected to the Beidou short message communication module (8), pins 33 and 34 of the Fudan microcontroller FM33LC026N are connected to the LDO linear voltage regulator chip HT7533 (9), pins 41, 42, 43, and 44 of the Fudan microcontroller FM33LC026N are connected to the status display light group (10), pins 56, 57, and 58 of the Fudan microcontroller FM33LC026N are connected to the RS485 bus transceiver chip SP3485EEN (11), and pins 63 and 64 of the Fudan microcontroller FM33LC026N are connected to the simulation debugging and download interface (12).

2. The data communication terminal based on the BeiDou-3 system according to claim 1, characterized in that: The power supply is provided by a data acquisition terminal, or by an external battery and a solar panel, or a DC12V adapter connected to a mains power supply.

3. The data communication terminal based on the BeiDou-3 system according to claim 1, characterized in that: The status display light group (10) is provided with 4 LED lights, which are respectively a working status light LED1, a communication status light LED2, a data transceiver status light LED3, and a debugging status light LED4. The working status light LED1, the communication status light LED2, the data transceiver status light LED3, and the debugging status light LED4 are respectively connected to the 44th, 43rd, 42nd, and 41st pins of the Fudan microcontroller FM33LC026N.

4. The data communication terminal based on the BeiDou-3 system according to claim 1, characterized in that: The RNSS Beidou module (7) is connected to the radio frequency bridge chip RCP1500Q03, and the radio frequency bridge chip is connected to the satellite antenna TX-B45X11 to realize the data upload function. A satellite communication card is installed in the flip-type SIM card holder. The flip-type SIM card holder is connected to the radio frequency bridge chip RCP1500Q03 and the Beidou short message communication module (8) to realize the Beidou-3 communication function.

5. The data communication terminal based on the BeiDou-3 system according to claim 1, characterized in that: The LDO linear voltage regulator chip (9) is connected to the switching power supply chip LGS5148, the switching power supply chip LGS5148 is connected to the 4*2P connector, the 4*2P connector is connected to the data interface (4), the switching power supply chip LGS5148 controls the open circuit and short circuit of the power supply through the data interface (4), the RS232 interface is also connected to the 4*2P connector, and the instructions are sent and displayed to the Fudan micro single-chip computer FM33LC026N through the data interface (4), and the RS485 bus transceiver chip is also connected to the 4*2P connector, and the data acquisition terminal acquisition function is realized through the data interface (4).

6. The data communication terminal based on the BeiDou-3 system according to claim 1, characterized in that: The model of the RNSS Beidou module (7) is TAU1202. Pin 1 of the RNSS Beidou module (7) is grounded. Pin 2 UOUT0 and pin 3 UIN0 are respectively connected to pins 20 and 21 of the Fudan micro single-chip computer FM33LC026N, thereby realizing the communication function between the Fudan micro single-chip computer FM33LC026N and the TAU1202 chip. Pin 8 of the RNSS Beidou module (7) is connected to a power supply. After the overall voltage is stabilized by an LDO linear voltage regulator chip (9), the RNSS Beidou module (7) is powered by the Fudan micro single-chip computer FM33LC026N.

7. The data communication terminal based on the BeiDou-3 system according to claim 1, characterized in that: The model of the Beidou short message communication module (8) is an XM130 chip. Pins 1 and 6 of the XM130 chip are grounded, and pins 2 and 3 are respectively connected to pins 31 and 32 of the Fudan micro single-chip computer FM33LC026N, so as to realize the communication function between the Fudan micro single-chip computer FM33LC026N and the XM130 chip. Pins 7 and 8 of the XM130 chip are connected to a flip-type SIM card holder, and are connected to a satellite communication card through the flip-type SIM card holder. Pin 18 RFOUT of the Beidou short message communication module (8) is connected to a radio frequency bridge chip, and pin 35 RF-IN of the Beidou short message communication module (8) is connected to a satellite antenna TX-B45X11.

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