SU924872A1 - Transmission factor monitoring device - Google Patents

Description

The invention relates to radio engineering and can be used to monitor the quality indicators of radio transmitters.

A device for controlling the transmission coefficient is known, comprising a first rectifier, the input and output of which are connected respectively to the input of the radio transmitter, and the first input of the voltage calibrator, the second input of which is connected to the output of the second rectifier, and the series-connected comparator and the driver of the threshold display tl,

However, the known device has a low control accuracy.

The purpose of the invention is to improve the accuracy of control.

To achieve the goal, a transmission control device contains a first rectifier, the input and output of which are connected respectively to the input of the radio transmitter and

A control unit and a ratio calculation unit are added to the first input of the voltage calibrator, the second input of which is connected to the output of the second rectifier, and the sequential connected comparison unit and the shaper of the threshold indication signals, while the signal and control outputs of the radio transmitter are connected respectively to the input of the second rectifier the body and to the input of the control unit, the output of which is connected to the third input of the voltage calibrator and to the control input of the ratio calculation unit, the first and second signal

15 inputs and output of which are connected respectively with the first and second outputs of the voltage calibrator and with the combined input of the comparison bhük and the second input of the signal conditioner

Claims (1)

20 threshold indication, and the voltage calibrator is made in the form of serially connected attenuator, analog-digital converter and reversible digital-analogue converter of the body, the output and control input are connected respectively to the control input of the attenuator and to the second input of the analog-digital converter, the third input, the attenuator signal input, the second input, and the second and third outputs of the analog-to-digital converter are the first, second and third inputs and the first, second output respectively. odes of the voltage calibrator. The drawing shows a structural electrical circuit of the proposed device. The device for controlling the transmission coefficient contains a radio transmitter 1, the first and second rectifiers 2 and 3, respectively, the control unit k, the voltage calibrator 5, consisting of an analog-digital converter 6, a reverse digital-to-analog converter 7 and an attenuator 8, the comparison unit 9, shaper 1 & threshold indication signals, unit 11 for calculating the relation The device operates as follows. The needle from the input of the transmitter and the transmitter 1 through the first rectifier 2 and from the output of the radio transmitter through the second rectifier 3 and the attenuator 8, the voltage oscillator 5 is fed to the inputs of the analog-digital converter 6. In the configuration mode of the radio transmitter, control unit k The command from the control output of the radio transmitter disconnects the calculation unit 11 from the analog-to-digital converter 6 and connects the reverse-analog converter to the analog-to-digital converter 7. The analog-to-digital converter together with the resistor The versatile digital-to-analog converter 7 operates in the following mode during the tuning process for the sake of the transmitter 1. Through the attenuator 8, the output voltage of the radio transmitter is set to the input voltage. After the radio transmitter 1 enters the operating mode, the control unit k, on command from the control output of the radio transmitter, disconnects from the analog-digital converter 6 a reversible digital-analog converter 7 and connects to the analog-digital converter 6 a ratio calculation unit 11. In this case, the analog-to-digital converter 6 generates in block 11 the number of pulses N and NQ, proportional to 1x output (Un) and input (Un) signals of the radio transmitter 1. Since NX, where Ug is the maximum value of the reference voltage of the analog-digital converter (source and drawing) not shown); N is the number of pulses corresponding to the voltage, UQ, then in block 11 we obtain Tac1x. one . To transfer, i.e. the desired value of the transfer coefficient. . . Block 9, compared with the set margin of tolerances of the transfer coefficient, generates a control signal to driver 10, where the norm signal is generated — not the norm when the input or output signals deviate beyond the allowable limits. Thus, the proposed device provides automatic continuous monitoring of the transmission ratio with high accuracy and speed in any operating mode of the radio transmitter and in a wide frequency range, which allows increasing the reliability of the transmitted information. Apparatus of the Invention A device for controlling a transmission coefficient, comprising a first rectifier, the input and output of which are connected respectively to the input of a radio transmitter and to the first input of a voltage calibrator, the second input of which is connected to the output of the second rectifier, and the series-connected unit and the driver threshold indication signals, characterized in that, in order to increase the control accuracy, a control unit and a ratio calculation block are introduced into it, and the signal and control outputs of the radio The sensor is connected to the input of the second rectifier and to the input of the control unit, the output of which is connected to the third input of the voltage calibrator and to the control input of the ratio calculation unit, the first and second signal inputs and the output of which are connected to the first and second outputs of the calibrator. voltage and with the combined input of the comparator unit and the second input of the signal conditioner of the threshold indication, and the voltage calibrator is made in the form of after 726 attenuator connected analogue-digital the converter and the reverse digital-analog converter, the output and control input of which are connected respectively to the control input of the attenuator and to the second input of the analog-digital converter, the third input of which, the signal input of the attenuator, the second input and the second and third outputs of the analog-digital converter The first, second, and third inputs and the first, second outputs of the voltage calibrator, respectively. Sources of information taken into account in the examination. 1. USSR author's certificate No. 698137, cl. .Н 0 В З / О, 1378 (prototype).