Multi-redundancy communication base station receiver for railway measurement

Abstract

The utility model relates to the technical field of GNSS (Global Navigation Satellite System) continuous operation reference station system application and railway measurement application, in particular to a multi-redundancy communication reference station receiver for railway measurement. Comprising a shell part, and a power supply part, a temperature control part, a control part, a GNSS positioning part, a 4G communication part, a Beidou short message communication part and an operation part which are fixedly mounted in the shell part. The multi-redundancy communication base station receiver for railway measurement has a low-high-cold-resistance self-adaptive temperature control technology, integrates double GNSS board cards, can automatically switch double channels, supports 4G communication and Beidou short message communication in data transmission, can transmit data through a mobile public network, can switch to Beidou short message transmission data when the network is disconnected, and is convenient to use. Emergency data transmission in a public network-free environment is realized; the system has the characteristics of high and cold resistance and multi-redundancy communication mode, and is suitable for application environments of various complex and hard mountainous areas.

Description

TECHNICAL FIELD

[0001] The utility model relates to GNSS continuous operation reference station system application and railway survey application technical field, concretely relates to a kind of multi-redundancy communication reference station receiver for railway survey. BACKGROUND

[0002] In recent years with the continuous development of China's high-speed railway scale, due to its high-speed train operation, high-speed railway has high measurement standards from construction to maintenance, and continuous operation reference system (CORS) as a new technology can meet the accuracy requirements and can be automatically managed, and is widely used in high-speed railway construction and operation. Therefore, the number of high-speed railway CORS stations has shown a significant upward trend in recent years. High-speed railway has strict requirements for railway construction and operation reference level due to its high speed. When the construction error, deformation or settlement exceeds the allowed range, it will pose a significant threat to people's life and property safety. Therefore, high-speed railway CORS stations use existing standard methods during construction and use.

[0003] The CORS reference station provides reference for control network encryption, control network re-measurement and deformation monitoring reference points in railway construction, maintenance and railway deformation monitoring. The CORS reference station should be equipped with high-precision receiving equipment and antenna, as well as stable power supply and communication equipment to ensure data quality and stability. Some railway areas have high altitude, complex environment, large diurnal temperature difference, weak infrastructure of power supply, communication and transportation, and traditional receivers cannot meet the use requirements. The traditional receiver has the following disadvantages: 1) The traditional receiver only supports 4G network and wired network data transmission. In complex mountainous areas with unstable network signal, it is difficult to lay wired private network, and 4G network cannot meet the stable transmission of reference station data; 2) The traditional receiver has poor cold resistance and cannot adapt to the climate of large diurnal temperature difference in plateau areas. UTILITY MODEL CONTENT

[0004] To solve the above problems, the utility model provides a multi-redundancy communication reference station receiver for railway survey, which has low anti-cold adaptive temperature control technology, integrates double GNSS board cards, double channels can be automatically switched, data transmission supports 4G communication and Beidou short message communication, and can transmit data through mobile public network. When the network is disconnected, it can switch to Beidou short message data transmission to realize emergency data transmission in public network environment; It has the characteristics of anti-cold and multi-redundancy communication mode, and is suitable for various complex and dangerous mountainous areas.

[0005] The technical scheme of the utility model is as follows:

[0006] A kind of multi-redundancy communication reference station receiver for railway surveying, including shell portion and power supply portion, temperature control portion, control portion, GNSS positioning portion, 4G communication portion, beidou short message communication portion and operating portion fixedly installed in shell portion;

[0007] Power supply portion provides required operating power for receiver;Temperature control portion is used to monitor the internal temperature of receiver;Control portion is in communication connection with power supply portion, temperature control portion, control portion, GNSS positioning portion, 4G communication portion, beidou short message communication portion and operating portion;GNSS positioning portion is used to receive satellite positioning data;4G communication portion is used to connect mobile public network;Beidou short message communication portion is used for beidou satellite communication;Operating portion is used for receiver information display and setting.

[0008] Power supply portion is sequentially provided with filter and anti-surge circuit, anti-reverse connection protection circuit, overcurrent protection circuit, first DC / DC conversion circuit and second DC / DC conversion circuit from input end to output end.

[0009] Power supply portion further includes built-in lithium battery, and direct current voltage passing through overcurrent protection circuit is connected to charging management circuit at the same time, charging management circuit charges built-in lithium battery, and built-in lithium battery output is connected to the input of second DC / DC conversion circuit.

[0010] The input of power supply portion is 9-36VDC.

[0011] The output of power supply portion is three-way direct current power output.

[0012] Three-way direct current power output is 3.3VDC output, 4VDC output and 5VDC output respectively.

[0013] Temperature control portion is composed of temperature sensing unit, signal processing unit, MOS switch unit and heating unit, temperature sensing unit outputs temperature signal, which is amplified and processed by signal processing unit and output to control portion, and MOS switch unit receives control portion signal to switch the power supply of heating unit.

[0014] The CPU of control portion adopts I.MX6ULL core board, and the operating system is Linux built-in operating system.

[0015] GNSS positioning portion includes two positioning board cards.

[0016] Beidou short message communication portion includes beidou short message module unit and beidou communication radio frequency unit, beidou short message module unit is in communication connection with control portion, and beidou short message module unit is connected with external antenna through beidou communication radio frequency unit.

[0017] The utility model has the advantages that:

[0018] 1. The utility model discloses a kind of multiple redundancy communication reference station receivers for railway measurement, which is used for railway measurement The multiple redundancy communication reference station receiver of the utility model is monitored and adjusted in real time to the temperature inside receiver by temperature control part, ensure that the internal circuit of receiver can be maintained in normal temperature range under high-cold environment, avoid the performance decline or failure caused by low temperature, improve the environmental adaptability and reliability of equipment.

[0019] 2, The utility model discloses a kind of multiple redundancy communication reference station receivers for railway measurement, which is used for railway measurement The multiple redundancy communication reference station receiver of the utility model GNSS positioning part adopts double positioning board card design, realizes the 1+1 hot backup of main auxiliary board card;When one of positioning board card fails, it can be switched to another positioning board card intelligently, ensure the continuity and accuracy of positioning data, improve the reliability and stability of measurement.

[0020] 3, The utility model discloses a kind of multiple redundancy communication reference station receivers for railway measurement, which is used for railway measurement The multiple redundancy communication reference station receiver of the utility model integrates 4G communication and two kinds of beidou short message communication mode;Under normal circumstances, data transmission is carried out by 4G communication connection mobile public network;When mobile network signal is unstable or off-line, it can be automatically switched to beidou short message communication mode, realize emergency data transmission under no public network environment.This multiple redundancy communication mode ensures the continuity and reliability of data transmission.

[0021] 4, The utility model discloses a kind of multiple redundancy communication reference station receivers for railway measurement, which is used for railway measurement The power supply part of the multiple redundancy communication reference station receiver of the utility model adopts switching power supply design, built-in large capacity lithium battery, and support multi-voltage output, satisfy the power demand of various modules;When external power supply is powered off, internal lithium battery can maintain equipment to continue to work 12 hours, ensure the continuous operation ability of equipment.

[0022] 5, The utility model discloses a kind of multiple redundancy communication reference station receivers for railway measurement, which is used for railway measurement The control part of the multiple redundancy communication reference station receiver of the utility model adopts embedded control system, CPU uses the I.MX6ULL core board of low-power consumption, high energy efficiency, and runs Linux built-in operating system;This design makes equipment have higher intelligent level and stronger processing capacity, can realize accurate control to each part and efficient transmission of data.

[0023] 6, The utility model discloses a kind of multiple redundancy communication reference station receivers for railway measurement, which is used for railway measurement The multiple redundancy communication reference station receiver of the utility model is suitable for various complex dangerous mountainous application environment due to having the characteristics such as high-cold resistance, multiple redundancy communication mode;Whether in extreme climate condition or in the area of no mobile network coverage, stable performance and reliable data transmission can be maintained. BRIEF DESCRIPTION OF DRAWINGS

[0024] Figure 1 A component block diagram of a multi-redundancy communication reference station receiver for railway measurement according to an embodiment of the present application;

[0025] Figure 2 A power supply part principle block diagram of a multi-redundancy communication reference station receiver for railway measurement according to an embodiment of the present application;

[0026] Figure 3 A temperature control part principle block diagram of a multi-redundancy communication reference station receiver for railway measurement according to an embodiment of the present application;

[0027] Figure 4 A GNSS positioning part principle block diagram of a multi-redundancy communication reference station receiver for railway measurement according to an embodiment of the present application;

[0028] Figure 5 A Beidou short message communication part principle block diagram of a multi-redundancy communication reference station receiver for railway measurement according to an embodiment of the present application;

[0029] The components represented by the reference numerals in the drawings are:

[0030] The present application: 1, power supply part, 11, filter and anti-surge circuit, 12, anti-reverse connection protection circuit, 13, overcurrent protection circuit, 14, first DC / DC conversion circuit, 15, second DC / DC conversion circuit, 16, built-in lithium battery, 17, charging management circuit, 2, temperature control part, 21, temperature sensing unit, 22, signal processing unit, 23, MOS switch unit, 24, heating unit, 3, control part, 4, GNSS positioning part, 41, positioning board card 1, 42, positioning board card 2, 43, signal switching unit, 44, positioning radio frequency unit, 5, 4G communication part, 6, Beidou short message communication part, 61, Beidou short message module unit, 62, Beidou communication radio frequency unit, 7, operation part, 8, shell part. DETAILED DESCRIPTION

[0031] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments. Similar elements in different embodiments are referred to by related similar element reference numerals. In the following embodiments, many details are described to facilitate a better understanding of the present application. However, those skilled in the art will readily recognize that some features may be omitted in different situations, or may be replaced by other elements, materials, or methods. In some cases, certain operations related to the present application are not shown or described in the specification. This is to avoid obscuring the core parts of the present application with excessive description. For those skilled in the art, detailed description of these related operations is not necessary; they can fully understand the related operations based on the description in the specification and general technical knowledge in the art.

[0032] Furthermore, the features, operations, or characteristics described in the specification can be combined in any suitable manner to form various embodiments. At the same time, the steps or actions in the method description can be rearranged or adjusted in a manner obvious to those skilled in the art. Therefore, the various orders in the specification and drawings are only for the clear description of a particular embodiment and do not imply a necessary order, unless otherwise stated that a particular order must be followed.

[0033] The serial numbers assigned to components in this document, such as "first" and "second," are used only to distinguish the described objects and have no sequential or technical meaning. The terms "connection" and "linkage" used in this application, unless otherwise specified, include both direct and indirect connections (linkages).

[0034] Multi-redundant communication reference station receivers used for railway surveying, such as Figure 1 As shown, it includes a power supply section 1, a temperature control section 2, a control section 3, a GNSS positioning section 4, a 4G communication section 5, a Beidou short message communication section 6, an operation section 7, and a housing section 8.

[0035] The power supply section 1 provides power to other parts. The control section 3 controls the temperature control section 2, GNSS positioning section 4, 4G communication section 5, Beidou short message communication section 6 and operation section 7 through software, sending commands or receiving data. The outer shell structure provides external interfaces and operation interfaces.

[0036] After the equipment is powered on, the power supply section 1 starts working, providing three DC voltage outputs through a two-stage DC converter. All circuits work normally and can be easily configured through the operation section 7. The control section 3 drives the GNSS positioning section 4 to acquire satellite positioning data in real time. The 4G communication section 5 sends data to the server. When the network is disconnected, the Beidou short message communication section 6 is switched to continue data transmission. The temperature control section 2 monitors the internal temperature of the equipment in real time and performs internal heating when the temperature is too low.

[0037] The power supply section 1 is used to convert the power input into the operating voltage required by the receiver, ensuring that the receiver works normally.

[0038] Temperature control section 2 is used for internal temperature monitoring of the receiver. In cold environments, it heats up the internal temperature of the receiver to keep the internal circuitry operating within the normal temperature range.

[0039] The control section 3 is used to control the power supply section 1, temperature control section 2, GNSS positioning section 4, 4G communication section 5 and Beidou short message communication section 6 through I / O ports, serial ports and other interfaces, to control the circuit, acquire positioning data and transmit data.

[0040] The GNSS positioning section 4 is used to connect to the GNSS antenna, receive satellite positioning data, and exchange and transmit data with the control section 3.

[0041] The 4G communication section 5 is used to connect to the mobile public network for data transmission and upload to the designated server;

[0042] The BeiDou short message communication component 6 is used for BeiDou satellite communication, enabling emergency data transmission via BeiDou satellites in the absence of a public network.

[0043] Operation section 7 is used for simple receiver information display and settings, and provides operation buttons;

[0044] The outer casing 8 is used to protect the internal circuitry and provides external power interfaces, communication interfaces, radio frequency interfaces, display interfaces, operation panels, etc.

[0045] like Figure 2 As shown, the power supply section 1 includes a filtering and surge protection circuit 11, a reverse connection protection circuit 12, an overcurrent protection circuit 13, a first-stage DC / DC conversion circuit 14, a second-stage DC / DC conversion circuit 15, a built-in lithium battery 16, and a charging management circuit 17. The positive input terminal of the device's power supply is connected to the filtering and surge protection circuit 11 for filtering and lightning protection. Then, it passes through the reverse connection protection circuit 12 and the overcurrent protection circuit 13 to prevent the positive and negative terminals of the power supply from being reversed and to prevent overloading. After passing through the two-stage DC / DC conversion circuit, three stable DC voltages are obtained to power other parts of the device. The DC voltage from the overcurrent protection circuit 13 is simultaneously connected to the charging management circuit 17 to charge the built-in lithium battery 16. The lithium battery output is connected to the input of the second-stage DC / DC conversion circuit 15, providing an auxiliary power supply to the device when there is no external power source. The control section 3 communicates with the charging management circuit 17 to obtain battery information and control the charging voltage and current to maintain the optimal charging state.

[0046] The power supply part 1 adopts a switching power supply design, and is internally provided with a large-capacity lithium battery, uses an imported step-down conversion chip and a lithium battery charging management chip, supports multi-voltage output, meets the power demand of various modules, and when the external power supply is powered off, the internal lithium battery can maintain the equipment to continue to work for 12 hours.

[0047] As shown in Figure 3 The temperature control part 2 is composed of a temperature sensor unit 21, a signal processing unit 22, a MOS switch unit 23 and a heating unit 24. The temperature sensor unit 21 adopts a high-precision temperature sensor, outputs a temperature signal, and then the signal processing unit 22 performs signal amplification processing, and outputs the signal to the CPU of the control part 3. When the temperature exceeds the lower limit, the CPU obtains the signal and outputs the signal to the MOS switch unit 23, turns on the power switch of the heating unit 24, and the heating unit 24 starts to work, and the internal temperature of the device is raised. When the CPU detects that the temperature reaches the set value, the signal is given to turn off the MOS switch unit 23, and the heating unit 24 stops working.

[0048] The temperature control part 2 is composed of a temperature sensor unit, a signal processing unit 22, a MOS switch unit, and a heating unit 24. It monitors the internal temperature of the receiver in real time, sets a comparison threshold, heats the interior at low temperature, and stops heating when the temperature reaches the set range, so as to ensure the normal operation of the internal circuit.

[0049] The control part 3 is composed of a CPU and a peripheral circuit, adopts an embedded control system, the CPU adopts an I.MX6ULL core board with small size, low power consumption and high energy efficiency, and the operating system is an international mainstream Linux built-in operating system. The control circuit controls the power supply part 1, the temperature control part 2 and the operation part 7, and communicates with the GNSS positioning part 4, the 4G communication part 5 and the Beidou short message communication part 6 through a serial port, and reads and transmits data.

[0050] As shown in Figure 4 The GNSS positioning part 4 is composed of a positioning board card 1, a positioning board card 2, a signal switching unit 43 and a positioning radio frequency unit 44. The control part 3 selects to be connected with the positioning board card 1 or the positioning board card 2 through the signal switching unit 43, and communicates with the positioning board card through a UART serial port, monitors the data quality and working state of the positioning board card in real time, intelligently controls the start and sleep of the positioning board card, reduces power consumption, and acquires positioning data. The positioning board card can be configured through a configuration webpage, and can be configured as a fixed positioning board card 1 or a fixed positioning board card 2, or can be configured as a board card automatic switching. The software automatically identifies the state of the positioning board card, preferentially selects the board card in good state, and at the same time, if the positioning board card fails, it can be automatically switched to another positioning board card, thereby improving the reliability of the board card. The positioning board card is connected with an external antenna through the positioning radio frequency unit 44 to receive satellite signals.

[0051] The GNSS positioning part 4 is composed of a positioning board card 1 (41), a positioning board card 2 (42), a signal switching unit 43 and a positioning radio frequency unit 44, internally integrated double positioning board cards, as a main auxiliary board card 1+1 hot backup, the positioning board card 1 and the positioning board card 2 can be intelligently switched to another positioning board card when one of them fails, to ensure uninterrupted reception of positioning data.

[0052] As shown in Figure 5 The Beidou short message communication part 6 is composed of a Beidou short message module unit 61 and a Beidou communication radio frequency unit 62. The Beidou short message module unit 61 adopts a mature and reliable Beidou third-generation short message module, and is connected with the control part 3 for serial communication to transmit and receive data and control instructions. The Beidou short message module unit 61 performs noise reduction and optimization of radio frequency signals through the Beidou communication radio frequency unit 62, and then connects an antenna to obtain satellite communication signals. The Beidou short message communication part 6, in combination with the applied Beidou communication card, can perform satellite communication at a frequency of 60 seconds / second. When the 4G communication network in remote areas is unstable, the device automatically switches to Beidou short message communication for emergency data transmission, ensuring the stability of the reference station data transmission.

[0053] The Beidou short message communication part 6 includes a Beidou short message module unit 61 and a Beidou communication radio frequency unit 62. The Beidou short message module unit 61 performs serial communication with the control part 3 described above to transmit and receive data. The Beidou short message module unit 61 is connected with an external antenna through the Beidou communication radio frequency unit 62 to receive and transmit Beidou satellite signals.

[0054] After the receiver obtains the observation data of the GNSS positioning part 4, it transmits the data to a designated server at a fixed frequency through the 4G communication part 5. The transmission frequency can be set. When the mobile network signal at the receiver location is unstable and the network is disconnected, the receiver can automatically switch to the Beidou short message emergency communication mode to broadcast data to the Beidou satellite at a frequency of 60 seconds / second, and the data is received by the Beidou short message terminal on the server side, so as to realize emergency data transmission without mobile network.

[0055] The above application of specific examples to the utility model is described, which is only used to help understand the utility model, and does not limit the utility model. For the skilled person in the technical field to which the utility model belongs, according to the idea of the utility model, a number of simple deductions, deformations or substitutions can be made.

Claims

1. A multi-redundant communication reference station receiver for railway surveying, characterized by, The receiver comprises a shell part (8), a power supply part (1), a temperature control part (2), a control part (3), a GNSS positioning part (4), a 4G communication part (5), a Beidou short message communication part (6) and an operation part (7) fixedly installed in the shell part (8). The power supply part (1) provides the required working power for the receiver; the temperature control part (2) is used for monitoring the internal temperature of the receiver; the control part (3) is in communication connection with the power supply part (1), the temperature control part (2), the control part (3), the GNSS positioning part (4), the 4G communication part (5), the Beidou short message communication part (6) and the operation part (7); the GNSS positioning part (4) is used for receiving satellite positioning data; the 4G communication part (5) is used for connecting a mobile public network; the Beidou short message communication part (6) is used for Beidou satellite communication; and the operation part (7) is used for information display and setting of the receiver.

2. A multiple-redundancy communication reference station receiver for railway surveying as claimed in claim 1, characterized in that, The power supply part (1) is sequentially provided with a filter and anti-surge circuit (11), an anti-reverse connection protection circuit (12), an overcurrent protection circuit (13), a first-stage DC / DC conversion circuit (14) and a second-stage DC / DC conversion circuit (15) from an input end to an output end.

3. A multiple-redundancy communications reference station receiver for railway surveying as claimed in claim 2, wherein, The power supply part (1) further comprises a built-in lithium battery (16), a direct-current voltage passing through the overcurrent protection circuit (13) is connected to a charging management circuit (17), the charging management circuit (17) charges the built-in lithium battery (16), and the built-in lithium battery (16) is connected to an input of the second-stage DC / DC conversion circuit (15).

4. A multiple-redundancy communications reference station receiver for railway surveying as recited in claim 2, wherein, The input of the power supply part (1) is 9-36VDC.

5. A multiple-redundancy communication reference station receiver for railway surveying as recited in claim 2, wherein, The output of the power supply part (1) is three-way direct-current power output.

6. A multiple-redundancy communication reference station receiver for railway surveying as claimed in claim 5, characterised in that, The three-way direct-current power output is respectively 3.3VDC output, 4VDC output and 5VDC output.

7. A multiple-redundancy communication reference station receiver for railway surveying as recited in claim 1, wherein, The temperature control part (2) comprises a temperature sensing unit (21), a signal processing unit (22), a MOS switch unit (23) and a heating unit (24), the temperature sensing unit (21) outputs a temperature signal, the signal processing unit (22) amplifies and processes the output to the control part (3), and the MOS switch unit (23) receives a signal of the control part (3) to switch the power supply of the heating unit (24).

8. A multiple-redundancy communication reference station receiver for railway surveying as recited in claim 1, wherein, The CPU of the control part (3) adopts an I.MX6ULL core board, and the operating system is a Linux built-in operating system.

9. A multiple-redundancy communication reference station receiver for railway surveying as recited in claim 1, wherein, The GNSS positioning part (4) comprises two positioning board cards.

10. A multiple-redundancy communication reference station receiver for railway surveying as recited in claim 1, wherein, The Beidou short message communication part (6) comprises a Beidou short message module unit (61) and a Beidou communication radio frequency unit (62), the Beidou short message module unit (61) is in communication connection with the control part (3), and the Beidou short message module unit (61) is connected with an external antenna through the Beidou communication radio frequency unit (62).

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