A monitoring and alarming device and method for high-mountain unmanned launching station

Abstract

The application discloses a kind of high mountain unmanned launching station's monitoring alarm device and monitoring alarm method, comprising: FM frequency modulation receiving module, RDS information decoding module, audio comparison unit, beidou short message transmission terminal and microprocessor;FM frequency modulation receiving module is used to receive FM frequency modulation signal, and FM frequency modulation signal is respectively transmitted to RDS information decoding module and audio comparison unit;RDS information decoding module decodes monitoring in the RDS information in FM frequency modulation signal;Audio comparison unit is used to receive external reference audio and FM frequency modulation signal transmission of frequency modulation audio;Microprocessor receives RDS information decoding result and audio comparison result, when detecting RDS information decoding exception or audio comparison exception, trigger signal is sent to beidou short message transmission terminal;After beidou short message transmission terminal receives trigger signal, alarm information is sent to ground launching station by beidou satellite. With less equipment and lower cost, the monitoring of high mountain unmanned station frequency modulation FM emission state is realized.

Description

Technical Field

[0001] This invention belongs to the field of launch station monitoring technology, specifically relating to a monitoring and alarm device and method for an unmanned launch station in high mountains. Background Technology

[0002] Transmission stations need to monitor their daily transmission status. However, some unmanned transmission stations in high-altitude areas are isolated due to their remoteness from urban areas, high costs associated with laying fiber optic cables or establishing two-way microwave systems, and the difficulty or instability of cellular network coverage. This makes it difficult to monitor the transmitter status in real time, impacting the safe operation of the transmission stations. Therefore, how to efficiently and cost-effectively monitor unmanned transmission stations in high-altitude areas has become a problem that needs to be solved. Summary of the Invention

[0003] The purpose of this invention is to provide a monitoring and alarm device and method for unmanned high-altitude transmitter stations, with low monitoring costs.

[0004] To achieve the above objectives, the present invention provides the following technical solution: a monitoring and alarm device for an unmanned high-altitude transmitter station, comprising: an FM frequency modulation receiving module, an RDS information decoding module, an audio comparison unit, a Beidou short message transmission terminal, and a microprocessor; The FM frequency modulation receiving module is used to receive the FM frequency modulation signal transmitted by the high-altitude unmanned transmitter station itself, and transmit the FM frequency modulation signal to the RDS information decoding module and the audio comparison unit respectively; The RDS information decoding module decodes and monitors the RDS information in the FM frequency modulation signal and transmits the decoding result to the microprocessor. The audio comparison unit is used to receive external reference audio and FM audio transmitted by the FM receiving module, perform consistency comparison between the two, and transmit the comparison result to the microprocessor. The microprocessor receives the RDS information decoding result and the audio comparison result. When an RDS information decoding abnormality or an audio comparison abnormality is detected, it sends a trigger signal to the Beidou short message transmission terminal. The Beidou short message transmission terminal is connected to the microprocessor. After receiving the trigger signal, it sends an alarm message to the ground transmission station via the Beidou satellite.

[0005] Furthermore, it also includes an FM transmitter, which is connected to the microprocessor via an RS232 to USB interface; The alarm information sent by the Beidou short message transmission terminal also includes the operating status data of the frequency modulation transmitter.

[0006] Furthermore, it also includes an environmental monitoring terminal, which is connected to the microprocessor via an RS485 to USB interface; The alarm information sent by the Beidou short message transmission terminal also includes the physical parameters collected by the environmental monitoring terminal.

[0007] Furthermore, the audio comparison unit includes an external audio source and a USB audio module; The external audio source is used to provide reference analog audio, and the USB audio module is used to perform analog-to-digital conversion on the reference analog audio and the FM analog audio transmitted by the FM receiver module to obtain a digital reference audio stream and a digital comparison audio stream, and transmit both to the microprocessor. The microprocessor performs a consistency comparison between the digital reference audio stream and the digital comparison audio stream to generate the audio comparison result.

[0008] Furthermore, the USB audio module uses the CM108 chip, and the FM receiver module is an FM tuner receiver module QN8066.

[0009] Furthermore, the microprocessor is a BCM2712.

[0010] Furthermore, the RDS information decoding module is an N76E616AL48, which is connected to the GPIO port of the microprocessor via a TTL serial port to transmit the decoded station logo and frequency data to the microprocessor.

[0011] Furthermore, the BeiDou short message transmission terminal is HCHY981, and the BeiDou short message transmission terminal is connected to the microprocessor via an RS232 to USB interface.

[0012] Furthermore, the environmental monitoring terminal is GB-300A, and the FM transmitter is ZHC618F-1000W / C.

[0013] A monitoring and alarm method for unmanned high-altitude transmitter stations based on BeiDou short message service is also disclosed, applicable to the monitoring and alarm device described above, characterized by including the following steps: 1. The FM frequency modulation receiving module receives the FM frequency modulation signal transmitted by the high-altitude unmanned transmitter station itself, and transmits the FM frequency modulation signal to the RDS information decoding module and the audio comparison unit respectively; 2. The RDS information decoding module decodes and monitors the RDS information in the FM signal and transmits the decoding result to the microprocessor; at the same time, the audio comparison unit receives external reference audio and FM audio, transmits them to the microprocessor after analog-to-digital conversion, and the microprocessor performs a consistency comparison between the two, generates an audio comparison result and transmits it to itself. 3. Simultaneously, the transmitter's operating status data is collected via the FM transmitter, and the physical parameters of the station equipment's operating environment are collected via the environmental monitoring terminal, and both are transmitted to the microprocessor; 4. The microprocessor determines whether the RDS decoding result or the audio comparison result is abnormal. If there is no abnormality, it returns to step 1) to continue monitoring; if any abnormality exists, it generates a trigger signal and executes step 5). 5. After receiving the trigger signal, the Beidou short message transmission terminal sends alarm information to the ground transmission station via the Beidou satellite.

[0014] Compared with the prior art, the beneficial effects of the present invention are: (1) This device monitors the transmitted signal using two methods: audio comparison and RDS detection. After detecting an error, it sends an alarm message via Beidou short message. This enables alarm information to be transmitted to the transmission technicians via Beidou satellite even at high-altitude stations with poor cellular network coverage. After receiving the alarm information, the technicians can promptly carry out emergency response to the faulty station. With less equipment and lower cost, the device achieves the monitoring of the FM transmission status of unmanned high-altitude stations, improves the operational efficiency of unmanned high-altitude transmission stations, and effectively ensures the safe broadcasting of unmanned high-altitude transmission stations. (2) Since the Beidou satellite short message has limitations on the number of bytes sent and the sending period, the present invention will only control the Beidou short message transmission terminal to send alarm information and brief data on the current transmitter and dynamic environment status to the designated ground transmission station after an error is found in either the RDS information decoding monitoring or audio comparison stage, so as to notify the technicians to handle the fault. Attached Figure Description

[0015] Figure 1 A flowchart for the monitoring and alarm method; Figure 2 This is a schematic diagram of the connection structure of the monitoring and alarm device. Detailed Implementation

[0016] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0017] Please see Figures 1-2 This invention provides a monitoring and alarm device and method for an unmanned high-altitude launch station.

[0018] A monitoring and alarm device for an unmanned high-altitude transmitter station includes: an FM radio frequency receiving module, an RDS information decoding module, an audio comparison unit, a Beidou short message transmission terminal, and a microprocessor; The FM receiver module is used to receive the FM signal transmitted by the high-altitude unmanned transmitter station itself, and transmit the FM signal to the RDS information decoding module and the audio comparison unit respectively. The RDS information decoding module decodes and monitors the RDS information in the FM frequency modulation signal and transmits the decoding results to the microprocessor. The audio comparison unit is used to receive external reference audio and FM audio transmitted by the FM receiver module, compare the two for consistency, and transmit the comparison result to the microprocessor. The microprocessor receives the RDS information decoding result and the audio comparison result. When an RDS information decoding abnormality or audio comparison abnormality is detected, a trigger signal is sent to the Beidou short message transmission terminal. The BeiDou short message transmission terminal is connected to a microprocessor. After receiving a trigger signal, it sends an alarm message to the ground transmission station via the BeiDou satellite. The BeiDou short message transmission terminal only sends data when it receives a trigger signal, adapting to the byte count and transmission cycle limits of BeiDou satellite short messages.

[0019] This device monitors the transmitted signal using both audio comparison and RDS detection. Upon detecting an error, it sends an alarm message via BeiDou short message service. This enables alarm information to be transmitted to transmission technicians at high-altitude stations with poor cellular network coverage via BeiDou satellite. Technicians can then promptly initiate emergency procedures for the faulty station. With minimal equipment and low cost, this device enables the monitoring of FM transmission status at unmanned high-altitude transmission stations, improving operational efficiency and ensuring safe broadcasting.

[0020] Because BeiDou satellite short messages have limitations on the number of bytes sent and the sending period, this invention will only control the BeiDou short message transmission terminal to send alarm information and brief data on the current transmitter and dynamic environment status to the designated ground transmission station after an error is detected in either the RDS information decoding monitoring or audio comparison stage, so as to notify the technicians to handle the fault.

[0021] Furthermore, the monitoring and alarm device also includes an FM transmitter, which is connected to the microprocessor via an RS232 to USB interface to collect its own transmission power, reflection power and other operating status data in real time and transmit them to the microprocessor. The alarm information sent by the Beidou short message transmission terminal also includes the operating status data of the FM transmitter.

[0022] Furthermore, the monitoring and alarm device also includes an environmental monitoring terminal, which is connected to the microprocessor via an RS485 to USB interface. It is used to collect physical parameters such as voltage, current, and temperature of the station equipment operating environment in real time and transmit them to the microprocessor to realize real-time monitoring and early warning of abnormalities in the system operating environment. The alarm information sent by the Beidou short message transmission terminal also includes physical parameters collected by the environmental monitoring terminal.

[0023] Furthermore, the monitoring and alarm device also includes an automatic control device, which is connected to a microprocessor. When the microprocessor detects an abnormality in RDS information decoding or an abnormality in audio comparison, it also sends a trigger signal to the automatic control device. After receiving the trigger signal, the automatic control equipment performs an emergency switching operation on the switching device at the control station site based on the operating status data of the FM transmitter and the physical parameters collected by the environmental monitoring terminal.

[0024] The following is one implementation of the audio comparison unit, which includes an external audio source and a USB audio module; An external audio source is used to provide reference analog audio. The USB audio module is used to perform analog-to-digital conversion on the reference analog audio and the FM analog audio transmitted by the FM receiver module to obtain a digital reference audio stream and a digital comparison audio stream. Both are then transmitted to the microprocessor as reference signals for audio consistency verification. The microprocessor performs a consistency comparison between the digital reference audio stream and the digital comparison audio stream to generate audio comparison results.

[0025] This audio comparison unit completes dual-channel audio analog-to-digital conversion in a single module, simplifying hardware, reducing costs, and minimizing potential failure points; it relies on the main microprocessor to complete the comparison, making full use of hardware resources; an external audio source constructs a full-link monitoring closed loop, and local processing only transmits the results, adapting to the low transmission characteristics of BeiDou.

[0026] Furthermore, the USB audio module uses the CM108 chip, and the FM receiver module is the QN8066 FM tuning receiver module. The microprocessor is a BCM2712. The RDS information decoding module is an N76E616AL48, which connects to the microprocessor's GPIO port via a TTL serial port to transmit decoded station logos and frequency data to the microprocessor. The Beidou short message transmission terminal is an HCHY981, which connects to the microprocessor via an RS232 to USB interface. Relying on the Beidou satellite communication network, it enables short message transmission of alarm information, equipment status, and other data in scenarios without terrestrial communication coverage. The environmental monitoring terminal is a GB-300A, and the FM transmitter is a ZHC618F-1000W / C.

[0027] The BCM2712 microprocessor serves as the core control and processing unit of the entire system, enabling data aggregation and scheduling across all peripheral modules via multiple USB interfaces and GPIO ports. It is responsible for real-time comparison of externally input audio with the system's own FM broadcast audio, and parsing RDS broadcast data. When abnormal states such as audio anomalies or RDS broadcast data errors are detected, the BeiDou short message transmission terminal is immediately triggered to send alarm information, transmitter operating status, and environmental monitoring data to the ground station.

[0028] The FM tuning receiver module QN8066 is used to receive the FM radio analog audio signal transmitted by the system itself. It also performs analog-to-digital conversion through the USB audio module CM108, sending the digital audio stream to the microprocessor as a comparison signal for audio consistency verification.

[0029] A monitoring and alarm method for unmanned high-altitude transmitter stations based on BeiDou short message service is also disclosed, which is applied to the monitoring and alarm device mentioned above, and includes the following steps: 1. The FM frequency modulation receiving module receives the FM frequency modulation signal transmitted by the high-altitude unmanned transmitter station itself, and transmits the FM frequency modulation signal to the RDS information decoding module and the audio comparison unit respectively; 2. The RDS information decoding module decodes and monitors the RDS information in the FM signal and transmits the decoding result to the microprocessor; at the same time, the audio comparison unit receives the external reference audio and FM audio, transmits them to the microprocessor after analog-to-digital conversion, and the microprocessor performs a consistency comparison between the two, generates an audio comparison result and transmits it to itself. 3. Simultaneously, the transmitter's operating status data is collected via the FM transmitter, and the physical parameters of the station equipment's operating environment are collected via the environmental monitoring terminal, and both are transmitted to the microprocessor; 4. The microprocessor determines whether the RDS decoding result or the audio comparison result is abnormal. If there is no abnormality, it returns to step 1) to continue monitoring. If any abnormality exists, a trigger signal is generated and step 5) is executed. If an automatic control device is also connected, a trigger signal is sent to the automatic control device at the same time, which controls the switching device to perform an emergency switch according to the transmitter operating status data and physical parameters. 5. After receiving the trigger signal, the BeiDou short message transmission terminal sends short message data containing alarm information, transmitter operating status data and physical parameters to the ground launch station via the BeiDou satellite. The BeiDou short message transmission terminal only sends data when it receives the trigger signal.

[0030] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A monitoring and alarm device for a high-altitude unmanned transmitter station, characterized in that, include: FM radio receiver module, RDS information decoding module, audio comparison unit, Beidou short message transmission terminal and microprocessor; The FM frequency modulation receiving module is used to receive the FM frequency modulation signal transmitted by the high-altitude unmanned transmitter station itself, and transmit the FM frequency modulation signal to the RDS information decoding module and the audio comparison unit respectively; The RDS information decoding module decodes and monitors the RDS information in the FM frequency modulation signal and transmits the decoding result to the microprocessor. The audio comparison unit is used to receive external reference audio and FM audio transmitted by the FM receiving module, perform consistency comparison between the two, and transmit the comparison result to the microprocessor. The microprocessor receives the RDS information decoding result and the audio comparison result. When an RDS information decoding abnormality or an audio comparison abnormality is detected, it sends a trigger signal to the Beidou short message transmission terminal. The Beidou short message transmission terminal is connected to the microprocessor. After receiving the trigger signal, it sends an alarm message to the ground transmission station via the Beidou satellite.

2. The monitoring and alarm device for a high-altitude unmanned transmitter station according to claim 1, characterized in that, It also includes an FM transmitter, which is connected to the microprocessor via an RS232 to USB interface; The alarm information sent by the Beidou short message transmission terminal also includes the operating status data of the frequency modulation transmitter.

3. The monitoring and alarm device for a high-altitude unmanned transmitter station according to claim 1, characterized in that, It also includes an environmental monitoring terminal, which is connected to the microprocessor via an RS485 to USB interface; The alarm information sent by the Beidou short message transmission terminal also includes the physical parameters collected by the environmental monitoring terminal.

4. The monitoring and alarm device for a high-altitude unmanned transmitter station according to claim 1, characterized in that, The audio comparison unit includes an external audio source and a USB audio module; The external audio source is used to provide reference analog audio, and the USB audio module is used to perform analog-to-digital conversion on the reference analog audio and the FM analog audio transmitted by the FM receiver module to obtain a digital reference audio stream and a digital comparison audio stream, and transmit both to the microprocessor. The microprocessor performs a consistency comparison between the digital reference audio stream and the digital comparison audio stream to generate the audio comparison result.

5. The monitoring and alarm device for a high-altitude unmanned transmitter station according to claim 4, characterized in that, The USB audio module uses the CM108 chip, and the FM receiver module is the FM tuner receiver module QN8066.

6. The monitoring and alarm device for a high-altitude unmanned transmitter station according to claim 1, characterized in that, The microprocessor is a BCM2712.

7. The monitoring and alarm device for a high-altitude unmanned transmitter station according to claim 1, characterized in that, The RDS information decoding module is an N76E616AL48. The RDS information decoding module is connected to the GPIO port of the microprocessor through a TTL serial port to transmit the decoded station logo and frequency data to the microprocessor.

8. The monitoring and alarm device for a high-altitude unmanned transmitter station according to claim 1, characterized in that, The BeiDou short message transmission terminal is HCHY981, and it is connected to the microprocessor via an RS232 to USB interface.

9. The monitoring and alarm device for a high-altitude unmanned transmitter station according to claim 1, characterized in that, The environmental monitoring terminal is GB-300A, and the FM transmitter is ZHC618F-1000W / C.

10. A monitoring and alarm method for a high-altitude unmanned transmitter station based on BeiDou short message service, applied to the monitoring and alarm device as described in any one of claims 1 to 9, characterized in that, Includes the following steps:

1. The FM frequency modulation receiving module receives the FM frequency modulation signal transmitted by the high-altitude unmanned transmitter station itself, and transmits the FM frequency modulation signal to the RDS information decoding module and the audio comparison unit respectively; 2. The RDS information decoding module decodes and monitors the RDS information in the FM signal and transmits the decoding result to the microprocessor; at the same time, the audio comparison unit receives external reference audio and FM audio, transmits them to the microprocessor after analog-to-digital conversion, and the microprocessor performs a consistency comparison between the two, generates an audio comparison result and transmits it to itself.

3. Simultaneously, the transmitter's operating status data is collected via the FM transmitter, and the physical parameters of the station equipment's operating environment are collected via the environmental monitoring terminal, and both are transmitted to the microprocessor; 4. The microprocessor determines whether the RDS decoding result or the audio comparison result is abnormal. If neither is abnormal, it returns to step 1) to continue monitoring. If any anomaly exists, a trigger signal is generated and step 5 is executed.

5. After receiving the trigger signal, the Beidou short message transmission terminal sends alarm information to the ground transmission station via the Beidou satellite.

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