Portable search and rescue satellite personal emergency position indicating mark coding and radio frequency test verification device

Abstract

A portable search and rescue satellite personal emergency position indicating mark coding and radio frequency test verification device comprises the following modules integrated in a high-strength sealed universal box: a mobile communication module which is connected with a search and rescue satellite system in real time through a wireless network and receives monitoring data of the search and rescue satellite system; the STB100 position indicating marker test platform is used for receiving a distress radio-frequency signal of the personal emergency position indicating marker and demodulating and testing the radio-frequency signal; and an operating system of the panel control module is connected with the mobile communication module, receives monitoring data of the search and rescue satellite system, and is also interconnected with the beacon test platform to test the starting and test process of the platform in real time. The device facilitates the testing of the availability of the position indicating mark, reduces the communication cost with a search and rescue satellite system, and achieves the informatization and automation of the access of a distress signal to a search and rescue satellite for testing. And particularly, the integrated and portable design better meets the requirements of field operation, and ensures that when a user is in danger, the user can send and receive the information.

Description

Technical Field

[0001] The utility model belongs to the field of international search and rescue satellite communication systems, and in particular relates to a portable search and rescue satellite personal emergency position indicating beacon coding and radio frequency test verification device. Background Art

[0002] In the era of globalization, the transportation needs of the three branches of sea, land and air are constantly growing, and the demand for emergency response is also rising. Against this background, Canada, France, the United States and the Soviet Union jointly developed the global international search and rescue satellite system COSPAS-SARSAT (Comicheskaya Sistema Poiska Avariynich Sudov - Search and Rescue Satellite).

[0003] The international search and rescue satellite system COSPAS-SARSAT is an important part of the global maritime distress and safety system GMDSS (global maritime distress and safety system) and the global aeronautical distress and safety system GADSS (global aeronautical distress and safety system), and uses satellites to provide distress alarm information services globally. As a satellite-aided search and rescue initiative, a treaty-based non-profit intergovernmental humanitarian cooperation organization composed of 45 countries and agencies, member states operate a constellation of approximately 66 satellites orbiting the earth, which carry signal receivers capable of detecting and locating emergency position indicating beacons activated by distressed persons, aircraft or vessels anywhere on earth, and forwarding this alarm information to countries and regions that can take rescue actions, providing accurate, timely and reliable distress alarms and position data for the sea, land and air including the polar regions globally, enabling distressed persons to receive timely and effective assistance.

[0004] In 1985, the Ministry of Transport represented China in joining the International Search and Rescue Satellite Organization, and the Chinese search and rescue satellite system undertakes the tasks of distress alarm and distress data exchange within China's search and rescue service area. Currently, 45 countries and regions around the world have joined the International Search and Rescue Satellite Organization, and jointly provide global search and rescue distress information services through global joint networking.

[0005] See Figure 1The working principle diagram of the international search and rescue satellite system is shown in the figure. The international search and rescue satellite system mainly includes an emergency beacon 1, a satellite 2, a ground receiving station 3, and the China International Search and Rescue Satellite System Mission Control Center (CNMCC) 4. The main operation process is: the distress beacon 1 sends an alarm signal to the satellite 2, which is forwarded by the satellite 2 to the ground receiving station 3. The local ground receiving station 3 receives and decodes the beacon identification code and the relevant information of the location data and sends it to CNMCC 4. CNMCC 4 generates an alarm message (SIT-185) and then distributes it to the search and rescue center (not shown in the figure) to help the search and rescue personnel determine the location and quickly carry out rescue work.

[0006] Emergency Position Indicating Beacons are information transmitters in satellite search and rescue systems. Aircraft, ships, and individuals equipped with them can send out distress signals when in distress. Emergency Position Indicating Beacons are divided into four types according to the different carriers they use: Emergency Locator Transmitters (ELTs) for aviation, Emergency Position Indicating Radio Beacons (EPIRBs) for ships, Personal Locator Beacons (PLBs) for individuals, and special Locator Beacons for the aerospace field.

[0007] There are more than 1.3 million PLBs in the world. At present, the annual production of PLBs in my country is about 1,500, and the main user groups are professional users such as the flight teams of the Rescue Bureau of the Ministry of Transport. As relevant technologies and supporting policies are gradually improved, the application of PLBs for road exploration, field operations and other scenarios will become more and more widespread.

[0008] The relevant management departments of maritime and civil aviation have formulated performance standards and technical specifications for aircraft position-indicating beacons (ELTs) and marine position-indicating beacons (EPIRBs). The coding and radio frequency test and verification devices for the corresponding beacons are also relatively mature. However, there is a lack of practical and convenient test and verification devices for the coding and radio frequency test and verification of personal emergency position-indicating beacons (PLBs). Utility Model Content

[0009] The purpose of the utility model is to overcome the above-mentioned defects. In combination with the application of China's search and rescue satellite system, a portable search and rescue satellite personal emergency beacon coding and radio frequency test and verification device is proposed, which is specially used for the coding and radio frequency test and verification of personal emergency beacons, and can conveniently and effectively test and verify the accuracy of personal emergency beacon signal transmission parameters and encoding and decoding.

[0010] To achieve the above object, the present utility model provides a portable search and rescue satellite personal emergency position indicating beacon encoding and radio frequency test and verification device, which is connected to the international search and rescue satellite system of China through a wireless network and at least includes the following modules placed in the same portable housing:

[0011] A mobile communication module, which is connected to the international search and rescue satellite system of China in real time through a wireless network and receives the monitoring data of the search and rescue satellite system in real time. These data include the information for receiving and resolving the personal emergency position indicating beacon signal.

[0012] An STB100 position indicating beacon test platform, which receives the distress radio frequency signal of the personal emergency position indicating beacon, demodulates and tests the radio frequency signal.

[0013] A tablet control module, including a display, an input device, and an operating system; the operating system is connected to the mobile communication module through a wireless network and receives the monitoring data of the search and rescue satellite system; the operating system is also interconnected with the STB100 position indicating beacon test platform to control the startup and test process of the STB100 position indicating beacon test platform in real time; the input device inputs operation instructions to the operating system, and the display can display the test process and results, as well as test data in real time.

[0014] According to one aspect of the present utility model, the mobile communication module adopts a 5G / 4G LTE communication module; the STB100 position indicating beacon test platform is the STB100 local test platform of WST Company in Canada; the input device of the tablet control module is an input keyboard and / or a touchpad. Preferably, the 5G / 4G LTE communication module of the mobile communication module is a Huawei mobile router.

[0015] According to one aspect of the present utility model, the STB100 position indicating beacon test platform demodulates the radio frequency signal to obtain the original bit sequence; the test includes checking the validity of the original bit sequence bit by bit, judging the message type and whether it meets the data field requirements according to the encoding format required by the international search and rescue satellite organization, and checking the bit error rate according to the BCH error correction code.

[0016] The test further includes any of the following items: verification of the default value of the built-in position encoding of the position indicating beacon; verification of the digital information generator; verification of the modulation, transmission frequency, and output power of the 406 MHz transmitter; verification of the signal-to-noise ratio data of the position indicating beacon signal; verification of the transmission repetition period of the position indicating beacon; encoding verification of the short code and long code modes of the position indicating beacon; test verification of the transmission frequency stability of the position indicating beacon; verification of the bit synchronization bit, frame synchronization bit, and format flag of the position indicating beacon; verification of the satellite parsed position and built-in position message data when the position indicating beacon uses the official protocol; self-test mode check verification; verification of the antenna and encoding software of the position indicating beacon; verification of the frequency stability.

[0017] The test platform also supports generating a test report for the radio frequency signal test results of personal emergency position indicating radio beacons according to the relevant technical requirements of COSPAS-SARSAT documents.

[0018] According to one aspect of the present utility model, it further includes a power supply module, which provides portable power support for the mobile communication module, the STB100 position indicating radio beacon test platform, and the tablet control module. The portable power supply includes a solar panel, a lithium battery energy storage, a mains fast charger, or an AC inverter charging device. The power supply module supplies power to it through the USB TYPE-C interface of the tablet control module or through a dedicated adapter.

[0019] According to one aspect of the present utility model, the portable housing is a high-strength sealed universal box. In particular, it is a high-strength pull rod moisture-proof sealed three-proof box.

[0020] The portable search and rescue satellite personal emergency position indicating radio beacon encoding and radio frequency test verification device of the present utility model can communicate with the China Search and Rescue Mission Control Center (CNMCC), test whether the position indicating radio beacon can send a distress signal to the CNMCC through the search and rescue satellite, and display the sending result on this device. It not only facilitates the user's test process of the availability of the position indicating radio beacon, but also reduces the communication cost with the China Search and Rescue Mission Control Center, realizing the informatization and automation of testing the access of distress signals to the search and rescue satellite. In particular, the integrated and portable design better meets the needs of field operations, ensuring that it can be "used, sent, and received" in case of distress.

[0021] The object of the present utility model, as well as other objects not listed herein, are satisfied within the scope of the independent claims of this application. The embodiments of the present utility model are defined in the independent claims, and the specific features are defined in its dependent claims. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is the working principle diagram of the China COSPAS-SARSAT system;

[0023] Figure 2 It is the functional block diagram of the portable search and rescue satellite personal emergency position indicating radio beacon encoding and radio frequency test verification device of the present utility model. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0024] The present utility model will be described in detail below with reference to the drawings and by taking specific embodiments as examples. However, those skilled in the art should know that the present utility model is not limited to the listed specific embodiments, and as long as it conforms to the spirit of the present utility model, it should be included within the protection scope of the present utility model.

[0025] As Figure 2The following is a functional block diagram of the portable search and rescue satellite personal emergency position indicating beacon encoding and RF test verification device of the present utility model; the portable search and rescue satellite personal emergency position indicating beacon encoding and RF test verification device of the present utility model mainly consists of the following four modules placed in the same portable housing: a mobile communication module 110, a tablet control module 130, an STB100 position indicating beacon test platform 120, and a power supply module 140. Among them:

[0026] Mobile communication module 110, It can be connected to and accessed the China Search and Rescue Mission Control Center (CNMCC) of the China International Search and Rescue Satellite System in real time through a wireless network, and receive the monitoring data of the search and rescue satellite system in real time. These data include the information of receiving and resolving the position indicating beacon signal. Preferably, the mobile communication module 110 uses a 5G / 4G LTE communication module, and the example model is a Huawei mobile router. The 5G / 4G LTE communication module provides a dedicated communication link for the device to remotely access the China International Search and Rescue Satellite System through the network access point (APN) applied for by the operator, so as to receive the monitoring data of the China International Search and Rescue Satellite System in real time.

[0027] STB100 beacon test platform 120, Responsible for demodulating and testing the RF signal of the personal position indicating beacon.

[0028] Preferably, the STB100 position indicating beacon test platform 120 of the present utility model is the STB100 position indicating beacon local test platform of the Canadian WST company.

[0029] After receiving the distress RF signal of the personal position indicating beacon, in accordance with the requirements of the International Search and Rescue Satellite Organization, demodulate the position indicating beacon RF signal and check the electrical parameters of the position indicating beacon transmitting signal. First, demodulate the signal, synchronize bit synchronization and frame synchronization to obtain the original bit sequence. Then, conduct tests, check the validity of the original bit sequence bit by bit, judge the message type and whether it meets the data field requirements according to the coding format, and check the error rate therein according to the BCH error correction code.

[0030] In a specific embodiment, the test content can further include any item of the following: verification of the default value of the built-in position code of the position indicating beacon; verification of the digital information generator; verification of the modulation, transmission frequency, and output power of the 406 MHz transmitter; verification of the signal-to-noise ratio data of the position indicating beacon signal; verification of the transmission repetition period of the position indicating beacon; coding verification of the short code and long code modes of the position indicating beacon; test verification of the transmission frequency stability of the position indicating beacon; verification of the bit synchronization bit, frame synchronization bit, and format flag of the position indicating beacon; verification of the satellite parsing position and built-in position message data when the position indicating beacon uses the official protocol; self-test mode check verification; verification of the position indicating beacon antenna and coding software; verification of the frequency stability.

[0031] In addition, the test platform 120 of the present utility model also supports generating a test report for the radio frequency signal test results of personal emergency position indicating beacons according to the relevant technical requirements of the COSPAS-SARSAT documents.

[0032] Tablet control module 130, This module mainly includes a display, an input device, and an operating system. The operating system of the tablet control module 130 is connected to the mobile communication module 110 through a wireless network (such as WIFI) to remotely receive the monitoring data of the Chinese COSPAS-SARSAT system; at the same time, the operating system is also interconnected with the STB100 beacon test platform 120 to control the startup and test process of the STB 100 beacon test platform 120 in real time. It can test in real time whether the beacon can send a distress signal to the CNMCC of the Chinese COSPAS-SARSAT system through a search and rescue satellite.

[0033] The input device is responsible for inputting operation instructions into the tablet control module 130. In a specific embodiment, the input device is a keyboard and / or a touchpad, and the operation instructions are input manually or automatically into this module. The display can then display the test process and results, as well as test data, in real time.

[0034] The tablet control module 130 uses a portable computer equipped with USB, TYPE-A, and USB TYPE-C interfaces. Preferably, in one embodiment, the tablet control module 130 selects the Huawei Matebook E model and is interconnected with the STB100 beacon test platform 120 through the USB TYPE-A interface to control the startup and test process of the STB 100 beacon test platform 120 in real time.

[0035] Power supply module 140 , this module is responsible for providing portable power support to the above three modules, including solar panels, lithium battery energy storage, mains fast charging, or AC inverter charging devices.

[0036] In one embodiment, the power supply module 140 supplies power to the tablet control module 130 through the USB TYPE-C interface of the tablet control module 130, and can also directly supply DC power to the test platform 120 through a dedicated adapter (not shown in the figure).

[0037] The test effect of the portable search and rescue satellite personal emergency position indicating beacon encoding and radio frequency test verification device of the present utility model is described below through an example. Between 0:00 and 4:00 on January 12, 2023, when conducting an airborne emergency position indicating beacon test at Kunming Changshui Airport in cooperation with the Civil Aviation Administration, a personal locator beacon PLB was used as a reference signal synchronously.

[0038] The reference beacon is provided by the China Transport Telecommunications and Information Center, and the information is as follows:

[0039] Table 1

[0040] Reference beacon Manufacturer HEX ID TAC code Location PLB Mcmurdo 339C98360CFFBFF 304 Kunming Changshui Airport, 25 06N 102 56E

[0041] The manufacturer of the personal emergency beacon is Mcmurdo, an American company. The unique 15-digit hexadecimal identity (HEX ID) of the beacon is 339C98360CFFBFF. The manufacturer's identification code (TAC) in the International Search and Rescue Satellite Organization is 304. The personal emergency beacon is powered by a battery, and the placement location data is "Kunming Changshui Airport, 2506N 102 56E".

[0042] Some examples of solution data for the search and rescue satellite in this test are as follows:

[0043] Table 2

[0044]

[0045] The verification test is divided into two subjects. Subject 1 is a simulated routine beacon maintenance test scenario. Within the first 5 minutes of the agreed test window, the maintenance team performs the standard beacon maintenance test process. The transmission time is greater than 5 seconds and less than 10 seconds, repeated 3 times, with an interval of 1 minute each time. Subject 2 is the effective transmission of the beacon 406Mhz signal. The scenario of not turning off the beacon transmission switch in time during the simulated maintenance of the beacon is carried out after completing the routine beacon maintenance test of Subject 1 at the hour of the test window, and then the test is carried out at an interval of 10 minutes. After the beacon is turned on, it will continue to transmit for 3 minutes, repeated 3 times, with an interval of 1 minute each time.

[0046] According to the monitoring of the China International Search and Rescue Satellite System, between 2:00 and 2:35, the system normally received and decoded the reference beacon signal, accurately calculated the position of the beacon, and the six antennas located in Beijing completely captured the beacon transmission (Burst).

[0047] The number of bursts shown in Table 2 indicates the number of times the personal beacon information of this test has been successfully uploaded to the search and rescue satellite. Table 2 truthfully reflects the calculated data under the conditions at that time. These data can be read from the display of the flat-panel control module 130. As can be seen from the table, the beacon position data "25 06.8N10256.5E" and "25 07.3N 102 57.2E" calculated by the search and rescue satellite system are very close to the actual data "25 06N 102 56E" of the placement location Kunming Changshui Airport, which is within the allowable error range. This shows that the portable search and rescue satellite personal emergency beacon coding and radio frequency test verification device of the utility model is very practical and effective, and can test in real time that the beacon has sent the distress signal to the CNMCC of the China International Search and Rescue Satellite System, which can fully ensure that it can be "used, sent, and received" in distress.

[0048] All modules of the present utility model are integrated into a high-strength sealed universal box to form a portable device. In a specific embodiment, a high-strength pull rod moisture-proof sealed three-proof box is even adopted.

[0049] The portable search and rescue satellite personal emergency position indicating beacon coding and radio frequency test verification device of the present utility model can communicate with the China Search and Rescue Mission Control Center (CNMCC), test whether the position indicating beacon can send a distress signal to the CNMCC through the search and rescue satellite, and display the sending result on this device. It not only facilitates the user's test process of the availability of the personal emergency position indicating beacon, but also reduces the communication cost with the China Search and Rescue Mission Control Center, realizing the informatization and automation of the distress signal access to the search and rescue satellite for testing. Especially the integrated and portable design better meets the needs of field operations.

[0050] It should be noted that the above embodiments are examples rather than limiting the present utility model, and those skilled in the art will be able to design many alternative embodiments without departing from the scope of the appended claims. Although the preferred embodiments of the present utility model have been described, once those skilled in the art know the basic creative concept, additional changes and modifications can be made to these embodiments. Therefore, the appended claims are intended to be interpreted to include the preferred embodiments as well as all changes and modifications falling within the scope of the present utility model.

Claims

1. A portable search and rescue satellite personal emergency position indicating beacon coding and radio frequency test verification device, which is connected to the China International Search and Rescue Satellite System through a wireless network, is characterized in that: At least include the following modules placed within the same portable housing: A mobile communication module (110), which is connected to the COSPAS-SARSAT system in real time through a wireless network and receives the monitoring data of the search and rescue satellite system in real time. This data includes receiving and resolving the signal information of the personal emergency locator beacon. An STB100 locator beacon test platform (120), which receives the distress radio frequency signal of the personal emergency locator beacon and demodulates and tests this radio frequency signal. A tablet control module (130), which includes a display, an input device, and an operating system. The operating system is connected to the mobile communication module (110) through a wireless network and receives the monitoring data of the search and rescue satellite system; the operating system is also interconnected with the STB100 locator beacon test platform (120) to control the startup and test process of the STB100 locator beacon test platform (120) in real time; the input device inputs operation instructions to the operating system, and the display can display the test process and results, as well as test data in real time.

2. The portable search and rescue satellite personal emergency position indicating beacon coding and radio frequency test verification device according to claim 1, characterized in that: The mobile communication module (110) uses a 5G / 4G LTE communication module; the STB100 locator beacon test platform (120) is the STB100 locator beacon local test platform of WST Company in Canada; the input device of the tablet control module (130) is an input keyboard and / or a touchpad.

3. The portable search and rescue satellite personal emergency position indicating beacon coding and radio frequency test verification device according to claim 2, characterized in that: The 5G / 4G LTE communication module of the mobile communication module (110) is a Huawei mobile router.

4. The portable search and rescue satellite personal emergency position indicating beacon encoding and radio frequency test and verification device according to claim 1, characterized in that: The STB100 locator beacon test platform (120) demodulates the radio frequency signal to obtain the original bit sequence; the test includes checking the validity of the original bit sequence bit by bit, judging the message type and whether it meets the data field requirements according to the coding format required by COSPAS-SARSAT, and checking the bit error rate therein according to the BCH error correction code.

5. The portable search and rescue satellite personal emergency position indicating beacon encoding and radio frequency test verification device according to claim 4, characterized in that: The test further includes any of the following items: verification of the default value of the built-in position code of the locator beacon; verification of the digital information generator; Verification of the modulation, transmission frequency, and output power of the 406 MHz transmitter; verification of the signal-to-noise ratio data of the locator beacon signal; verification of the transmission repetition period of the locator beacon; coding verification of the short code and long code modes of the locator beacon; test verification of the transmission frequency stability of the locator beacon; verification of the bit synchronization bit, frame synchronization bit, and format flag of the locator beacon; verification of the message data of the satellite parsing position and the built-in position when the locator beacon uses the official protocol; self-test mode check verification; Verification of the locator beacon antenna and coding software; verification of the frequency stability.

6. The portable search and rescue satellite personal emergency position indicating beacon coding and radio frequency test and verification device according to claim 1, characterized in that: The test platform (120) also supports generating a test report on the test results of the radio frequency signal of the personal emergency locator beacon according to the relevant technical requirements of the COSPAS-SARSAT documents.

7. The portable search and rescue satellite personal emergency position indicating beacon coding and radio frequency test verification device according to claim 1, characterized in that: It also includes a power supply module (140), which provides portable power support to the mobile communication module (110), the STB100 locator beacon test platform (120), and the tablet control module (130). The portable power includes a solar panel, lithium battery energy storage, mains fast charging, or an AC inverter charging device.

8. The portable search and rescue satellite personal emergency position indicating beacon coding and radio frequency test verification device according to claim 7, characterized in that: The power supply module (140) supplies power to it through the USB TYPE-C interface of the flat panel control module (130) or through a dedicated adapter.

9. The portable search and rescue satellite personal emergency position indicating beacon coding and radio frequency test verification device according to claim 1, characterized in that: The portable housing is a high-strength sealed universal box.

10. The portable search and rescue satellite personal emergency position indicating beacon coding and radio frequency test verification device according to claim 9, characterized in that: The high-strength sealed universal box is a high-strength pull rod moisture-proof sealed three-proof box.

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