RU43112U1 - MULTI-CHANNEL RADIO STATION - Google Patents

Abstract

A multichannel radio station containing a series-connected antenna, switch, receiver and speech privacy unit, a series-connected microphone, which is the first input of the device, and an analog-to-digital converter, a series-connected digital-to-analog converter and a headphone, which is the first output of the device, a data preparation console, a photodetector , a control panel, a transmitter and a first microelectronic computer, wherein the group of outputs of the control panel is a bus connection on with the first group of inputs of the first microelectronic computer, the first group of outputs of which is connected via bus to the group of inputs of the speech privacy unit, the first output of which is connected to a single input of the transmitter, the output of which is connected to the second input of the switch, the third input of which is connected to the first single output of the first microelectronic a computer, the second single output of which is connected to the second input of the analog-to-digital converter, the group of outputs of the photodetector is connected to the second group by a bus sing inputs of the first microelectronic computer, the second group of outputs of which is connected by bus to the group of inputs of the transmitter, and the third group of outputs of the first microelectronic computer, by bus is connected to the group of inputs of the receiver, characterized in that the second and third microelectronic computers are introduced, and the output is analog-digital the converter is connected to the first single input of the second microelectronic computer, the second to fifth single inputs of which are corresponding to

Description

The proposed utility model relates to the field of radio communications and can be used to transmit voice information over digital communication channels.

It is known "Radio communication device" according to the patent for the invention of Japan No. 3037663 from 1988, which performs the reception and transmission of signals and controls the identification code of another station by comparing position-measuring information with each other. However, this device has low adaptability.

Also known is a “Radio Station for a Radio Communication System with Analog and Digital Modes" according to US patent No. 6049722 of 2001, containing a signal level control unit depending on the mode. The disadvantage of this radio station is its complexity.

The closest in technical essence to the proposed device is a radio station R-168-0.5 U, developed by the Voronezh Research Institute of Communications (product "Aqueduct" ITNYA.464511.029) and produced by the domestic industry, adopted as a prototype.

Figure 1 presents a diagram of a device of the prototype, where it is indicated:

1 - antenna;

2 - data preparation console (PD);

3 - switch;

4 - photodetector;

5 - control panel;

6 - transmitter;

7 - microelectronic computing machine (micro-computer);

8 - receiver;

9 - block speech classification;

10 - analog-to-digital Converter (ADC);

11 - digital-to-analog converter (DAC);

12 - microphone;

13 - head phone. The prototype device contains a series-connected antenna 1, switch 3 and receiver 8, the output of which is connected to the first single input of the speech privacy unit 9, the second output of which is connected to the headphone 13, which is the output of the device, through a digital-to-analog converter (DAC) 11. The microphone 12, which is the input of the device, is connected via an analog-to-digital converter (ADC) 10 to the second single input of the speech privacy unit 9, the first output of which is connected via the transmitter b to the second input of the switch 3, the third input of which is connected to the first single output of the microelectronic computing machine (microcomputer) 7, the second group of outputs of which is connected by bus to the group of inputs of the transmitter 6, and the third group of outputs of micro-computers 7 is connected by bus to the group of inputs of receiver 8. Output group of the control panel 5 by a bus is connected to the first group of inputs of the microcomputer 7, the first group of outputs of which is connected by a bus to the group of inputs of the speech privacy unit 9. In addition, the prototype device includes a data preparation console (PD) 2 and a photodetector 4, the group of outputs of which is connected by bus to the second group of inputs of the microcomputer 7, the second single output of which is connected to the second input of the ADC 10.

Device prototype works as follows. Initially, the preparatory phase is carried out. At this stage, using a separate point of data preparation (PD) 2, the source data for the radio station is recorded in the microcomputer memory 7 for the operation of the radio station: carrier frequencies (channel numbers), speech privacy keys, tone calling frequencies, and so on. To do this, the operator presses the appropriate buttons on the PD 2 remote control, and the signals of these data are transmitted from the PD 2 remote control using infrared radiation to the photodetector 4. Photodetector 4 receives infrared signals, converts them into electrical signals and through

the bus feeds them to the second group of inputs of the microcomputer 7, where they are recorded in memory. At this stage, the preparatory phase ends, and the PD 2 remote control is not used later.

After the preparatory phase, the main stage of work begins.

The operating modes of the prototype device (transmission, reception, channel number, etc.) are set using the control panel 5.

In the transmission mode, the operator dials the channel number and other data on the control panel 5, while the control signals from the control panel 5 are sent via the bus to the first group of inputs of the microcomputer 7, which, under the influence of these signals, connects the transmitter 6 with the help of switch 3 to antenna 1 and generates the appropriate control codes for the transmitter 6 and the block of speech security 9. The control code from the microcomputer 7 sets in the transmitter 6 a specific carrier frequency corresponding to the selected channel number, and in the block of speech security 9 - classification of a certain key.

The transmitted analog voice signal from the microphone 12 is fed to the ADC 10, where it is converted using digital pulses from the second single output of the microcomputer 7 into digital form. The digital signal from the output of the ADC 10 is then fed to the second single input of the speech classification block 9, where it is classified by superimposing another digital signal (mask) onto the digital information signal in the form of a pseudorandom sequence generated inside the speech classification block 9. This is done by bitwise addition two signals "modulo two." A secret digital signal from the first output of the speech securing unit 9 is fed to a single input of the transmitter 6, where it is modulated at the carrier frequency, after which the modulated digital signal through the switch 3 is transmitted via the antenna 1 to the communication channel.

In addition, in the transmission mode, you can make a call to a specific subscriber using the “Call” tone. It's done

in the following way. The operator presses the "Call" button on the control panel 5. From the control panel 5, the control signals are sent via the bus to the first group of inputs of the microcomputer 7, which generates the corresponding control code for the transmitter 6, that is, it forms a certain frequency of the tone call. The tone signal from the output of the transmitter 6 at the carrier frequency is fed through the switch 3 using the antenna 1 to the communication channel.

In the receiving mode, control signals from the control panel 5 through the bus are sent to the first group of inputs of the microcomputer 7, which connects the receiver 8 to the antenna 1 using the switch 3 and generates control codes for the receiver 8 and the speech privacy unit 9.

The received digital classified signal from the communication channel is fed from the antenna 1 through the switch 3 to the single input of the receiver 8, where it is processed and detected. Then the detected signal from the output of the receiver 8 is fed to the first single input of the block of speech classification 9. Here it is declassified (the operation is the reverse of classification). This is done by removing from the classified digital signal of the mask superimposed on it by another radio station. To do this, the received digital classified signal is added bitwise "modulo two" with the signal in the form of a pseudo-random sequence generated inside the block of speech security 9. Then the declassified digital signal from the second output of the block of speech security 9 is fed to the DAC 11, which converts it into analog form, and then goes to the headphone 13.

The disadvantage of the prototype device is the low bandwidth.

To eliminate this drawback in a multi-channel radio station containing a series-connected antenna,

switchboard, receiver and speech privacy unit; a series-connected microphone, which is the first input of the device, and an analog-to-digital converter; a series-connected digital-to-analog converter and a headphone, which is the first output of the device; data preparation console, photodetector, control panel, transmitter and first microelectronic computer; at the same time, the group of outputs of the bus control panel is connected to the first group of inputs of the first microelectronic computer, the first group of outputs of which is connected by bus to the group of inputs of the speech privacy unit, the first output of which is connected to a single input of the transmitter, the output of which is connected to the second input of the switch, the third input which is connected to the first single output of the first microelectronic computer, the second single output of which is connected to the second input of the analog-to-digital converter; the group of outputs of the photodetector is connected by bus to the second group of inputs of the first microelectronic computer, the second group of outputs of which is connected by bus to the group of inputs of the transmitter, and the third group of outputs of the first microelectronic computer is connected by bus to the group of inputs of the receiver, the second and third microelectronic computers are introduced, and the output analog-to-digital Converter is connected to the first single input of the second microelectronic computer, from the second to fifth single input which are the corresponding inputs of the device; the fourth group of outputs of the first microelectronic computer is connected via bus to the group of inputs of the second microelectronic computer, the output of which is connected to the second single input of the speech privacy unit, the second output of which is connected to the single input of the third microelectronic computer, the first output of which is connected to the input of the digital-to-analog converter ; the fifth group of outputs of the first microelectronic computer bus

connected to the group of inputs of the third microelectronic computer, the second to fifth outputs of which are the corresponding outputs of the device.

Figure 2 presents the functional diagram of the proposed utility model, where indicated:

1 - antenna;

2 - data preparation console (PD);

3 - switch;

4 - photodetector;

5 - control panel;

6 - transmitter;

7 - the first microelectronic computing machine (micro-computer);

8 - receiver;

9 - block speech classification;

10 - analog-to-digital Converter (ADC);

11 - digital-to-analog converter (DAC);

12 - microphone;

13 - head phone;

14 - the second microelectronic computing machine (micro-computer);

15 - the third microelectronic computing machine (micro-computer). The proposed utility model contains a series-connected antenna 1, switch 3 and receiver 8, the output of which is connected to the first single input of the speech privacy unit 9, the second output of which is connected to the single input of the third microelectronic computer (micro-computer) 15, the first output of which is via a digital -analog converter (DAC) 11 is connected to the headphone 13, which is the first output of the device. From the second to fifth outputs of the third micro-computer 15 are the corresponding outputs of the device. The microphone 12, which is the input of the device, through an analog-to-digital converter (ADC) 10 is connected to the first

single input of the second micro-computer 14, the second to fifth single inputs of which are the corresponding inputs of the device. The group of outputs of the control panel 5 by a bus is connected to the first group of inputs of the first microcomputer 7, the first group of outputs of which is connected by a bus to the group of inputs of the speech privacy unit 9, the first output of which is connected through the transmitter 6 to the second input of switch 3, the third input of which is connected to the first a single output of the first micro-computer 7, the second group of outputs of which is connected by a bus to the group of inputs of the transmitter 6, and the third group of outputs of the first micro-computer 7 is connected by a bus to the group of inputs of the receiver 8. In addition, the device contains bullets t preparation of data (PD) 2 and a photodetector 4, the group of outputs of which is connected by a bus to the second group of inputs of the first micro-computer 7, the second single output of which is connected to the second input of the ADC 10. The fifth group of outputs of the first micro-computer 7 is connected to the group of inputs the third micro-computer 15, and the fourth group of outputs of the first micro-computer 7 is connected by a bus to the group of inputs of the second micro-computer 14, the output of which is connected to the second single input of the block of speech security 9.

The proposed device operates as follows.

Initially, the preparatory phase is carried out. At this stage, using a separate data preparation point (PD) 2, the source data for the operation of the radio station is recorded in the memory of the first micro-computer 7: carrier frequencies (channel numbers), speech privacy keys, tone calling frequencies, and so on. To do this, the operator presses the appropriate buttons on the PD 2 remote control and the data signals are transmitted from the PD 2 remote control using infrared radiation to the photodetector 4. Photodetector 4 receives infrared signals, converts them into electrical signals and feeds them through the bus to the second group of inputs of the first microcomputer 7, where they are written into memory. At this stage, the preparatory phase ends, and the PD 2 remote control is not used later.

After the preparatory phase, the main stage of work begins. The operation modes of the device (transmission, reception, channel number, etc.) are set using the control panel 5.

In the transmission mode, the operator dials the channel number and other data on the control panel 5, while the control signals from the control panel 5 are sent via a bus to the first group of inputs of the first microcomputer 7, which, under the influence of these signals, connects the transmitter 6 with the help of switch 3 to antenna 1 and generates the appropriate control codes for the transmitter 6 and the speech privacy unit 9. From the second group of outputs of the first microcomputer 7, a control code is supplied to the group of inputs of the transmitter 6 by the bus, which sets a certain value in the transmitter 6 carrier frequency corresponding to the selected channel number. From the first group of outputs of the first microcomputer 7, a control code is supplied to the group of inputs of the speech privacy block 9 by a bus, which sets a specific security key in the speech privacy block 9.

The transmitted analog voice signal from the microphone 12 is fed to the ADC 10, where it is converted using digital clock pulses from the second single output of the first micro-computer 7. The digital signal from the output of the ADC 10 is then fed to the first single input of the second micro-computer 14, which performs the functions of a packetizer. Under the action of control signals supplied from the fourth group of outputs of the first microcomputer 7, the “compression” of information and the formation of a packet of the first channel occur in the second microcomputer 14.

At the same time, information from other digital sources (data transmission equipment, micro-computers, “digitized” speech) can be fed to the second, third, fourth and fifth single inputs of the second micro-computer 14. In the second microcomputer 14, each digital stream is “compressed”, resulting in the formation of a combined packetized

a data stream in which “compressed” information for each input takes a strictly defined place (channel).

The combined (five-channel) digital signal from the output of the second micro-computer 14 is fed to the second single input of the speech privacy block 9, where it is classified by superimposing another digital signal (mask) onto the digital information signal in the form of a pseudorandom sequence formed inside the speech privacy block 9 This is accomplished by bitwise adding two modulo two signals. A secret digital signal from the first output of the speech securing unit 9 is fed to a single input of the transmitter 6, where it is modulated at the carrier frequency, after which the modulated digital signal through the switch 3 is transmitted via the antenna 1 to the communication channel.

In addition, in the transmission mode, you can make a call to a specific subscriber using the “Call” tone. This is done as follows. The operator presses the "Call" button on the control panel 5. From the control panel 5, the control signals are sent via the bus to the first group of outputs of the first microcomputer 7, which generates the corresponding control code for the transmitter 6, that is, it forms a certain frequency of the tone call. The tone signal from the output of the transmitter 6 at the carrier frequency is fed through the switch 3 using the antenna 1 to the communication channel.

In the receiving mode, control signals from the control panel 5 through the bus go to the first group of inputs of the first microcomputer 7, which connects the receiver 8 to the antenna 1 using the switch 3 and generates a control code for the receiver 8, which from the third group of outputs of the first microcomputer 7 the bus is fed to the group of inputs of the receiver 8. From the first group of outputs of the first microcomputer 7, the control code is set to the group of inputs of the block of speech security 9 using the bus, which sets a certain key of declassification.

The received combined digital signal from the communication channel is supplied from the antenna 1 through the switch 3 to the single input of the receiver 8, where it is processed and detected. Then the detected signal from the output of the receiver 8 is fed to the first single input of the block of speech classification 9. Here it is declassified (the operation is the reverse of classification). This is done by removing from the classified digital signal of the mask superimposed on it by another radio station. To do this, the received digital classified signal is added bitwise "modulo two" with a signal in the form of a pseudo-random sequence generated inside the block of speech security 9. Then the declassified combined digital signal from the second output of the block of speech security 9 is fed to a single input of the third microcomputer 15, which performs functions of the depacketator, where under the action of control signals supplied from the fifth group of outputs of the first microcomputer 7, the digital information of each of the five channels is depacketed. From the first output of the third micro-computer 15, a continuous digital signal is fed to the DAC 11, which converts it into analog form, and then goes to the headphone 13 to the operator. Simultaneously from the second, third, fourth and fifth outputs of the third micro-computer 15, the de-stacked digital information is supplied to other consumers (data transmission equipment, micro-computers, DACs, etc.).

The proposed device is implemented on the basis of blocks and microcircuits known from the technical literature. For example, the second 14 and third 15 micro-computers can be run on microprocessors ADSP 2185.

The technical efficiency of the proposed device, in comparison with the prototype, lies in the fact that it has a higher throughput. This is explained by the following.

The prototype device when operating at a fixed frequency allows you to transfer information from only one source. For networking

Data transmission would require several radio facilities and frequency channels, which, on the one hand, is expensive, and on the other, it is not always possible.

The proposed utility model allows using one radio facility to organize several (in this case, 5) independent networks on the same frequency channel due to signal compression in the time domain.

Claims (1)

A multi-channel radio station containing a series-connected antenna, switch, receiver and speech privacy unit, a series-connected microphone, which is the first input of the device, and an analog-to-digital converter, a series-connected digital-to-analog converter and a headphone, which is the first output of the device, a data preparation console, a photodetector , a control panel, a transmitter and a first microelectronic computer, wherein the group of outputs of the control panel is a bus connection on with the first group of inputs of the first microelectronic computer, the first group of outputs of which is connected via bus to the group of inputs of the speech privacy unit, the first output of which is connected to a single input of the transmitter, the output of which is connected to the second input of the switch, the third input of which is connected to the first single output of the first microelectronic a computer, the second single output of which is connected to the second input of the analog-to-digital converter, the group of outputs of the photodetector is connected to the second group by a bus sing inputs of the first microelectronic computer, the second group of outputs of which is connected by bus to the group of inputs of the transmitter, and the third group of outputs of the first microelectronic computer, by bus is connected to the group of inputs of the receiver, characterized in that the second and third microelectronic computers are introduced, and the output is analog-digital the converter is connected to the first single input of the second microelectronic computer, the second to fifth single inputs of which are corresponding to Odes of the device, the fourth group of outputs of the first microelectronic computer is connected via a bus to the group of inputs of the second microelectronic computer, the output of which is connected to the second single input of the speech privacy unit, the second output of which is connected to the single input of the third microelectronic computer, the first output of which is connected to the input of the digital-analog converter, the fifth group of outputs of the first microelectronic computer bus connected to the group of inputs of the third microel electronic computer, the second to fifth outputs of which are the corresponding outputs of the device.