Command control communication device based on limited resource condition

Abstract

The invention discloses a command and control communication device based on a limited resource condition. The command and control communication device comprises an ultra-short wave radio station and at least two command and communication control devices, the ultra-short wave radio station is arranged in a driving cabin of the vehicle and is connected with the first command communication control device in the driving cabin through an audio cable; the first command communication control device is connected with a second command communication control device arranged in a vehicle shelter through an RS-422 differential transmission cable; the method has good economical efficiency, platform adaptability and anti-interference capability.

Description

Technical Field

[0001] This invention relates to the field of ultra-shortwave radio communication technology, and more specifically to a command and control communication device under conditions of limited resources. Background Technology

[0002] Ultra-shortwave (UHF) radios transmit information using radio waves in the 30 MHz to 300 MHz band. Because UHF wavelengths range from 1 to 10 meters, they are also called meter-wave communication, primarily relying on line-of-sight propagation. UHF radios are flexible in deployment, respond quickly, and have strong anti-jamming capabilities. They can transmit voice, data, and other information and are widely used in individual soldier equipment, combat vehicles, engineering vehicles, and communication command vehicles, providing wireless communication capabilities for various combat units in complex electromagnetic environments. Emergency communication vehicles, engineering vehicles, and medical support vehicles employ a driver's cab and a container design; personnel are in the driver's cab while driving, and conduct engineering operations or communication command within the container when the vehicle is parked. Existing technologies mainly employ the following three solutions: Solution 1: Install two VHF radios per vehicle, one for driver's cab communication and the other for cabin communication; Solution 2: Install one VHF radio in the driver's cab and install digital intercom devices in both cabins, fully utilizing the VHF radio's Ethernet interface and connecting the VHF radio and digital intercom devices with network cables; Solution 3: Install one VHF radio in the driver's cab and install analog intercom devices in both cabins, fully utilizing the VHF radio's audio interface and connecting the VHF radio and analog intercom devices with audio cables. Therefore, existing technologies mainly have the following problems: Solution 1: Installing two VHF radios is costly and results in functional redundancy; Solution 2: Using the VHF radio's Ethernet interface to transmit PCM voice requires specific interfaces from the VHF radio and is not suitable for all VHF radios; Solution 3: Transmitting analog voice is susceptible to interference. Summary of the Invention

[0003] Purpose of the invention: The purpose of this invention is to provide a command and control communication device under limited resource conditions. It makes full use of the voice processing capabilities and digital-to-analog conversion technology of the existing Crotex-M3 ARM processor chip, combining analog and digital signals. This solves both the limitation of Ethernet interface transmission on the UHF radio interface and the problem of poor anti-interference capability of analog interface transmission.

[0004] Technical Solution: The command and control communication device based on limited resources described in this invention includes an ultra-shortwave radio and at least two command and communication control devices. The ultra-shortwave radio is installed in the driver's cab of a vehicle and connected to a first command and communication control device in the driver's cab via an audio cable. The first command and communication control device is connected to a second command and communication control device installed in the vehicle's cabin via an RS-422 differential transmission cable. Each command and communication control device includes a microprocessor, an audio operational amplifier circuit, an RS-422 level conversion circuit, and an audio comparison circuit. The first command and communication control device is used to process the analog audio signal output by the ultra-shortwave radio. The system performs analog-to-digital conversion and converts the digital audio signal transmitted from the container via the second command and communication control device through the RS-422 interface to the VHF radio. The second command and communication control device receives the digital audio signal sent by the first command and communication control device through the RS-422 interface, performs digital-to-analog conversion, and outputs it to the container's transceiver. It also performs analog-to-digital conversion on the analog audio signal collected by the container's transceiver and sends it to the first command and communication control device through the RS-422 interface. The first and second command and communication control devices perform differential transmission of audio data and control signals through the RS-422 interface.

[0005] Furthermore, when the first command and communication control device detects audio output from the VHF radio, it initiates the analog-to-digital conversion process; when it receives a voice signal sent by the second command and communication control device through the RS-422 interface, it controls the VHF radio to enter the transmission state.

[0006] Furthermore, after the first command and communication control device and the second command and communication control device are powered on, they first exchange connection confirmation signals through the RS-422 interface to confirm the establishment of the communication link.

[0007] Furthermore, the command and communication control device also includes an audio interface for connecting external microphones, as well as a knob for adjusting the volume and a knob for selecting the operating mode.

[0008] Furthermore, RS-422 differential transmission cables are used to transmit analog-to-digital converted digital audio signals and control signaling, including voice indication and link confirmation, between the cockpit and the container.

[0009] Furthermore, when the RS-422 interface is not connected, the first command and communication control device directly converts and outputs the input audio of the VHF radio to the cockpit transceiver, enabling independent communication in the cockpit.

[0010] The vehicle communication system of the present invention includes any of the communication devices described in the invention, and is applied to a vehicle having a driver's cab and an independent work container, enabling the driver's cab and the work container to share a single ultra-shortwave radio for command and control communication.

[0011] Beneficial Effects: Compared with existing technologies, this invention has the following significant advantages: This invention fully utilizes the digital processing capabilities of the processor, employing a combination of digital and analog methods. An analog interface is used in the cockpit to connect to the VHF radio, while existing VHF radios are all designed with analog audio interfaces, effectively solving the limitation problem of VHF radio interfaces. An RS-422 interface is used to connect the cockpit and the container cabin. The RS-422 interface uses differential signal transmission, has strong anti-interference capabilities, and can achieve stable communication over long distances and at high speeds. Therefore, this invention has good economic efficiency, platform adaptability, and anti-interference capabilities. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the structure of the present invention; Figure 2 This is a schematic diagram of a single command and communication control device of the present invention; Figure 3 This is a schematic diagram of the interior of a single command and communication control device of the present invention; Figure 4 This is a block diagram of the main control unit of the command and communication control device of the present invention; Figure 5 This is the cockpit audio processing flow of the present invention; Figure 6 The present invention provides the cabin audio processing flow. Detailed Implementation

[0013] The technical solution of the present invention will be further described below with reference to the accompanying drawings.

[0014] like Figures 1-2As shown, this embodiment of the invention provides a command and control communication device under limited resource conditions, including a VHF radio and at least two command and communication control devices. The VHF radio is installed in the driver's cab of a vehicle and connected to a first command and communication control device in the driver's cab via an audio cable. The first command and communication control device is connected to a second command and communication control device installed in the vehicle's cabin via an RS-422 differential transmission cable. Each command and communication control device includes a microprocessor, an audio operational amplifier circuit, an RS-422 level conversion circuit, and an audio comparison circuit. The first command and communication control device is used to process the analog audio signal output by the VHF radio. The system performs analog-to-digital conversion and converts the digital audio signal transmitted from the container via the second command and communication control device through the RS-422 interface to the VHF radio. The second command and communication control device receives the digital audio signal sent by the first command and communication control device through the RS-422 interface, performs digital-to-analog conversion, and outputs it to the container's transceiver. It also performs analog-to-digital conversion on the analog audio signal collected by the container's transceiver and sends it to the first command and communication control device through the RS-422 interface. The first and second command and communication control devices perform differential transmission of audio data and control signals through the RS-422 interface.

[0015] The first command and communication control device initiates an analog-to-digital conversion process upon detecting audio output from the VHF radio. Upon receiving a voice transmission signal from the second command and communication control device via the RS-422 interface, it controls the VHF radio to enter transmission mode. After powering on, the first and second command and communication control devices exchange connection confirmation signals via the RS-422 interface to confirm the establishment of the communication link. The command and communication control device also includes an audio interface for connecting external transceivers, a volume control knob, and a knob for selecting the operating mode. An RS-422 differential transmission cable is used to transmit the converted digital audio signal and control signals, including voice transmission indication and link confirmation, between the cockpit and the control module. When the RS-422 interface is not connected, the first command and communication control device directly converts and outputs the VHF radio's input audio to the cockpit transceivers, enabling independent communication within the cockpit. Figure 3-4 As shown, a single command and control communication device includes a handle hook 1, a speaker 2, a working mode knob 3, a handle connector 4, a volume knob 5, a radio interface 6, and a wired interface 7.

[0016] like Figure 5-6 As shown, the audio processing flow illustrates the working steps of the command communication and control device from two states: cockpit communication and container communication.

[0017] Cockpit communication can be enabled by following these steps: Step 1: After the command communication control device is powered on, send an exchange signal on the RS-422 interface to confirm whether the RS422 interface is connected; Step 2: The VHF radio receives audio and outputs analog audio from the audio interface. The analog audio is then input to the first command and communication control device. The command and communication control device confirms the audio input through a comparison circuit, and the MCU (microprocessor) begins to perform AD conversion on the analog audio signal input from the VHF radio. Step 3: If the RS-422 interface is not connected, start controlling the MCU to perform DA conversion and output analog audio signals to the receiver; Step 4: After the transmitter / receiver presses the transmit button, the command communication control device 1 receives the transmit tone instruction, starts to control the MCU to perform AD conversion on the analog audio signal input to the transmitter / receiver, and controls the VHF radio to enter the transmit state. Step 5: The MCU of the first command and communication control device performs DA conversion and outputs analog audio signals to the VHF radio.

[0018] To enable communication within the makeshift hospital, follow these steps: S1: After the command communication control device is powered on, it sends an exchange signal on the RS-422 interface to confirm whether the RS422 interface is connected; S2: The VHF radio receives audio and outputs analog audio from the audio interface. The analog audio is then input to the first command and communication control device. The first command and communication control device confirms the audio input through a comparison circuit, and the MCU begins AD conversion of the analog audio signal input from the VHF radio. S3: If the RS-422 interface is connected, the first command and communication control device uses the RS-422 interface to send audio data; S4: The second command and communication control device uses the RS-422 interface to receive audio data; S5: The MCU of the second command and communication control device performs DA conversion on the received audio data and outputs analog audio signals to the transmitter and receiver; S6: After the send / receiver presses the send button, the second command and communication control device receives the voice transmission instruction and sends the voice transmission signaling through the RS-422 interface; S7: After receiving the voice signal from the RS-422 interface, the first command and communication control device controls the VHF radio to enter the transmitting state. S8: The MCU of the second command and communication control device performs AD conversion on the analog audio signal input from the transmitter and receiver, and then sends the audio data through the RS-422 interface; S9: After receiving the audio data from RS-422, the first command and communication control device starts the MCU to perform DA conversion on the audio data and outputs the analog audio signal to the VHF radio.

Claims

1. A command and control communication device under limited resource conditions, characterized in that, The system includes a VHF radio and at least two command and communication control devices. The VHF radio is located in the driver's cab and connected to a first command and communication control device in the driver's cab via an audio cable. The first command and communication control device is connected to a second command and communication control device located in the vehicle's cabin via an RS-422 differential transmission cable. Each command and communication control device includes a microprocessor, an audio operational amplifier circuit, an RS-422 level conversion circuit, and an audio comparator circuit. The first command and communication control device performs analog-to-digital conversion on the analog audio signal output by the VHF radio and communicates with the cabin via the second command and communication control device. The command and communication control device transmits digital audio signals via RS-422 interface, performs digital-to-analog conversion, and then sends them to the VHF radio. The second command and communication control device receives digital audio signals sent by the first command and communication control device via RS-422 interface, performs digital-to-analog conversion, and outputs them to the container's transceiver. It also performs analog-to-digital conversion on analog audio signals collected by the container's transceiver and sends them to the first command and communication control device via RS-422 interface. The first and second command and communication control devices perform differential transmission of audio data and control signals via RS-422 interface.

2. The command and control communication device based on limited resources according to claim 1, characterized in that, When the first command and communication control device detects audio output from the VHF radio, it initiates the analog-to-digital conversion process; when it receives a voice signal sent by the second command and communication control device through the RS-422 interface, it controls the VHF radio to enter the transmission state.

3. The command and control communication device based on limited resources according to claim 1, characterized in that, After the first command and communication control device and the second command and communication control device are powered on, they first exchange connection confirmation signals through the RS-422 interface to confirm the establishment of the communication link.

4. The command and control communication device based on limited resources according to claim 1, characterized in that, The command and communication control device also includes an audio interface for connecting external microphones, as well as a knob for adjusting the volume and a knob for selecting the operating mode.

5. The command and control communication device based on limited resources according to claim 1, characterized in that, RS-422 differential transmission cables are used to transmit analog-to-digital converted digital audio signals and control signaling, including voice prompts and link confirmations, between the cockpit and the container.

6. The command and control communication device based on limited resources according to claim 1, characterized in that, When the RS-422 interface is not connected, the first command and communication control device directly converts the input audio of the VHF radio and outputs it to the cockpit transceiver, enabling independent communication in the cockpit.

7. A vehicle communication system, characterized in that, The communication device, as described in any one of claims 1-6, is applied to a vehicle having a driver's cab and an independent work container, enabling the driver's cab and the work container to share a single ultra-shortwave radio for command and control communication.

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