RU46114U1 - REMOTE CONTROL SYSTEM OF RADIO TRANSMITTERS - Google Patents

Abstract

The claimed technical solution relates to the field of automation, in particular to the field of remote control transmitters of television and sound broadcasting.

A remote control system for radio transmitters is proposed, consisting of a signal channel for the main broadcast programs, the output of which through a communication line is connected to the information input of an unattended transmitting device, as well as a control center for transmitting devices containing a control panel on the transmitting side, the output of which is connected to the first input of the signal mixer and, on the receiving side, a remote control signal receiver, the output of which is connected to the input of the actuator, the output of which о is connected to the control input of a maintenance-free transmitting device, to which, in order to increase the efficiency of use of maintenance-free transmitting devices, an additional channel for supplying sound broadcasting programs in the LF, MF or HF bands, as well as a transmitter for sound broadcasting programs in the LF, HF or MF bands, and the terrestrial signal transmission line with near-earth propagation of radio waves, and the output of the channel for supplying sound broadcasting programs to the range ax LF, HF or MF is connected to the second input of the signal mixer, the output of which is connected to the input of the audio broadcasting transmitter in the LF, HF or MF ranges, the output of which is connected to the terrestrial signal transmission line with near-earth propagation of radio waves, the output of which is connected to the input of the remote control signal receiver .

Currently, maintenance-free transmitters operate around the clock, irrationally using electricity and their resources.

This system allows you to control the on and off unattended television and sound broadcasting transmitters located in hard-to-reach areas of the service area of a specific radio and television transmitting center from the control panel located on the transmitting radio and television center, in the absence of electrical connection between the control panel and the maintenance-free transmitter, which increases the efficiency of their use . In this case, a standard transmitter is used, of the bass, midrange or treble ranges and the frequency at which it operates.

Description

The proposed technical solution relates to the field of automation and telemechanics, in particular to the field of remote control of television and sound broadcasting transmitters.

A known system for transmitting and receiving digital information, which allows, in the main transmission channel to organize an additional channel for remote control of the transmitter [1].

The disadvantage of this system is that the transmitter control signals can be generated only at the place of formation of broadcast programs, i.e. in the hardware-studio complex (ASK), which can be located thousands of km from the transmitter control center located at the radio and television transmitting center (RTPC). This makes it impossible to control maintenance-free transmitters located in hard-to-reach areas from the control centers of the RTSC in the service area of which they are located, due to the lack of electrical connection between the RTSC and the maintenance-free transmitter.

There is a remote control system for transmitting devices (power amplifiers) of a three-program wire broadcasting [2], which allows you to remotely control transmitting devices

regardless of the place of formation of broadcast programs. This system is selected as a prototype.

Functional diagram of the prototype is shown in Fig. 1.

In the prototype, control signals are generated at the control center of the transmitting devices 1 (in this case, at the central station of wire broadcasting — DSPV) on the control panel 2, the output of which is connected to the first input of the signal mixer 3, and the second input of the signal mixer 3 is connected to the output of the program supply channel sound broadcasting 4. In the signal mixer 3, the broadcasting and control signals are mixed and fed to the input of the communication line (in this case, wired) 5, the output of which signals are fed to the information input of the transmitting device 6 and to the input telecommand signal receiver 7, the output of which is connected to the input of the actuator 8, whose output is connected to a control input of the transmitting device 6.

The disadvantage of the prototype is that it does not allow you to control the on and off of the transmitters in cases where uncontrolled transmitters are used for broadcasting, located in remote areas where there is no wired electrical connection between the control center and the maintenance-free transmitter. In this case, the lack of remote control leads to irrational use of electricity and the resource of the transmitter.

The purpose of the proposed utility model is to provide control for maintenance-free transmitters from control centers located at the radio and television transmitting centers (RTPCs) in the service area of which these transmitters are located, but there is no connecting line between the control center and the transmitter, and

the use of a special radio link requires additional transmitting devices and additional frequencies.

The goal is achieved as follows.

To the remote control system of radio transmitters, consisting of a channel for supplying signals of the main broadcasting programs 4, the output of which through a communication line 5 is connected to the information input of an unattended transmitting device 6, as well as a control center for transmitting devices 1, which contains a control panel 2 on the transmitting side, the output of which with the first input of the signal mixer 3, and on the receiving side is a remote control signal receiver 7, the output of which is connected to the input of the actuator 8, the output of which connected to the control input of an unattended transmitting device 6, introduced - on the transmitting side of the control unit of the transmitting devices 1 additional channel for supplying sound broadcasting programs in the bands LF, MF or HF 9, as well as a transmitter for sound broadcasting programs in the bands LF, HF or MF 10, and on-air signal transmission line with near-earth propagation of radio waves 11, and the output of the channel for supplying sound broadcasting programs in the bands LF, HF, or MF 9 is connected to the second input of the signal mixer 3, the output of which is connected to sound transmitter channel in the bands of LF, HF or MF 10, the output of which is connected to the terrestrial signal transmission line with near-earth propagation of radio waves 11, the output of which is connected to the input of the receiver of telecontrol signals 7.

The prototype diagram is shown in Fig. 1. The scheme of the alleged invention is shown in Fig. 2.

Designations in the figures.

1. Point of control of transmitting devices (TsSPV or RTPTs).

2. The control panel.

3. The signal mixer.

4. Signal channel of the main broadcast programs.

5. Communication line (wired or satellite).

6. Maintenance-free transmitting device.

7. Remote control signal receiver.

8. Executive device.

9. An additional channel for supplying sound broadcasting programs in the LF, MF or HF bands.

10. Transmitter for sound broadcasting programs in the LF, MF or HF bands.

11. The terrestrial signal transmission line with near-earth propagation of radio waves.

The system operates as follows.

Broadcast signals (television or sound) generated in the hardware-studio complex via the signal feed channel of the main broadcast programs 4, are fed to the equipment of the State Enterprise of Space Communications, where they are converted into satellite signals. The space communications equipment complex (including the communication satellite) forms the space communication line 5.

On a space communication line 5 through a communication satellite, television and sound broadcasting signals are transmitted to all serviced and maintenance-free transmitters of radio-television broadcasting 6.

Transmitters 6 operate in the VHF (VHF) range within the range of reliable reception of these waves, which determines the zone of their operation.

However, the control on and off of specific maintenance-free transmitters 6 should be carried out only from the control point 1 located on the radio-television transmitting center in the service area of which they are located.

There is no direct connection between the control center of the transmitting devices 1 and maintenance-free transmitters.

But at each RTTC there are sound broadcasting transmitters 10 operating in the LF, MF and HF ranges (long, medium and short waves), with the help of which the entire coverage area of the RTSC is covered by sound broadcasting, within which there are also unattended transmitters 6.

The transmitters 10 signals of sound broadcasting programs are fed via communication trunk 9 (cable, radio relay, satellite, etc.).

Broadcast signals received on channel 9 are mixed in mixer 3 with telecontrol signals received from control panel 2.

The mixed signal is fed to the transmitter of the LF, MF or HF range, which radiates it on the air and along the transmission line of signals with near-earth propagation of radio waves 11.

This signal is received by the remote control signal receiver 7 and fed to the input of the actuator 8, which turns on or off the maintenance-free transmitter 6.

This proposal allows you to control transmitters that relay television and sound stereo broadcasts located in hard-to-reach areas where they are not directly connected to the control center by wire, and the creation of special radio lines with near-earth propagation of radio waves to control such transmitters requires special

expensive transmitters and frequency allocation for their signals, which is associated with great difficulties.

In this proposal, for this purpose, transmitters available at transmitting radio and television centers with near-earth propagation of sound broadcasting signals covering the entire coverage area of the RTSC are used and their frequencies are used by compressing the sound broadcasting signals with telecontrol signals.

References.

1. M.S. Petrov, A.A. Ivanov. "A method of transmitting and receiving digital information and a system for its implementation." Copyright certificate No. 1833907.

2. "The technique of wire broadcasting and sound amplification." Ed. B. B. Bulgak and A. P. Efimov, M. "Radio and Communications", 1985, pp. 149-161.

Claims (1)

A system for remote control of radio transmitters, consisting of a channel for signaling the main broadcast programs, the output of which is connected via a communication line to the information input of an unattended transmitting device, as well as a control center for transmitting devices containing a control panel on the transmitting side, the output of which is connected to the first input of the signal mixer and on the receiving side, a remote control signal receiver, the output of which is connected to the input of the actuator, the output of which is connected control input of a maintenance-free transmitting device, characterized in that, in order to increase the efficiency of use of maintenance-free transmitting devices, an additional channel for supplying sound broadcasting programs in the LF, MF or HF bands, as well as a transmitter for sound broadcasting programs in the LF, HF or MF ranges, and the terrestrial signal transmission line with near-earth propagation of radio waves, and the output of the channel for supplying sound broadcasting programs in the range LF, HF or MF is connected to the second input of the signal mixer, the output of which is connected to the input of the audio broadcasting transmitter in the LF, HF or MF ranges, the output of which is connected to the terrestrial signal transmission line with near-earth propagation of radio waves, the output of which is connected to the input of the remote control signal receiver .