SU1372345A1 - Device for transmitting telemetering information from rotating object - Google Patents

Abstract

The invention relates to the field of measurements of the physicomechanical parameters of rotating objects and can be used to transmit information from rotors in diagnostic systems. The purpose of the invention is to increase the information content and accuracy of the device. The device operates as follows: With the help of the one-oscillator 1 and modulator 2, the supply voltage at the output of the generator 3 of the stationary part is compressed. As a result, a pulse supply voltage appears on the buses, the power supply to the modulator 11, the channel switch 8 and the pulse shaper 9 o However, the separator element on the diode 12 and the positive element on the capacitor 13 ensure that the supply voltage on the power buses of the pulse shaper 9 and the channel switch 8 are within acceptable limits. Simultaneously with the supply of pulse signals to the input of the one-shot 1, the switch of the channels 8 is switched over the control input. Accuracy is provided by the ability to connect a reference source in a multipoint monitoring process. 1 il. (L

Description

3t) / A Oi

7- / 7

(V, r ,.)

The invention relates to the field of measurement of the physicomechanical parameters of rotating objects and can be used to transmit information from rotors in diagnostic systems

The purpose of the invention is to increase the information content and accuracy of the device.

The drawing shows the structural diagram of the device

The device contains on the fixed part a single vibrator 1, a modulator 2, a generator 3, the first winding A of a transformer, a receiver 5, a second winding 6 of a transformer on a rotating object, sensors 4 (not shown), a switch 8 channels, a driver 9 pulses, a stabilized source 10 eg wives module

11, diode separation element

12, a storage element on the capacitor 13,

The device works as follows

Clock pulses are fed to the input of a one-shot 1, which produces modulation pulses. By means of the modulator 2, the amplitude-pulse manipulation of the alternating voltage at the output of the generator 3, and hence the supply voltage at the outputs of the stabilized voltage source 10, is carried out, which leads to the switching off of the modulator 11 and sensors 7 o. voltage does not affect the performance of the pulse generator 9 and the switch 8 channels, since their circuits are disconnected by diode 12 from the output of the stabilized voltage source 10, and the supply voltage during the operation of the modulation pulse is kept in the specified time interval at the required level due to the charge of the capacitor 13,

A prerequisite for the operability of the device is to perform the ratio

WITH

Rig

R

. d, op

- total resistance of the power supply circuits of the switchboard of 8 channels and the driver of 9 pulses;

Yu

15 0

25

30 -jg 40

0

five

С - capacitor capacity

13;

t - pulse duration - i

sa one-shot 1; chol.I1 "in.Aoo - nominal and minimum allowable voltage supply of the switch 8 channels and shaper 9 pulses.

In addition, to ensure the functioning of the pulse former 9, the condition

( one

UCP

where Off is a constant chain time

filtering stabilized voltage source 10; Ucp is the input voltage of the shaper 9 pulse

At the output of the pulse shaper 9, rectangular pulses are generated, which are fed to the control input of the switch of 8 channels. In this case, the switch 8 channels switches from the previous state to the next, connecting the corresponding sensor 7 to the input of the modulator II. After modulation of the supply voltage, the information signals input to the input of the modulator 11 are converted into telemetric signals that are transmitted through the radio channel to the receiver 5, where it is converted into the original form of information signals.

The proposed device, in comparison with the known, allows performing multipoint measurements without increasing the number of communication channels and practically without increasing the power consumed by the rotating functional units, and also allows improving the measurement accuracy due to the possibility of periodically turning on the generator of calibration signals into the transmitting tract.

Claims (1)

Invention Formula A device for transmitting telemetry information from a rotating object, containing a receiver on a fixed part, a generator, the output of which is connected to the first winding of a transformer, on the rotating object a second transformer winding connected to the input of a stabilized voltage source, the first output of which is connected to the first input of the modulator, characterized in that, in order to increase the information content and accuracy, a modulator and a single-oscillator are introduced into the fixed part, the output of which is connected to the generator input on the rotating object is a channel switch, sensors by the number of parameters, a pulse shaper, a separating element and a diode, a storage element on a capacitor, output: the sensors are connected to the corresponding inputs channel switch, the setup input of which is connected to the output of the pulse generator, the first power bus of the channel switch combined with the first power bus of the pulse generator, through a reverse-connected diode connected to the control input of the pulse driver and connected to the second output of a stabilized voltage source, the third output of which is connected to the second power supply buses of the pulse driver and the channel switch and connected to the first power buses through a capacitor channel switch and pulse generator, the output of the channel switch is connected to the second input of the modulator, the output of which is connected via radio to the input of the emnika fixed portion, input and receiver output monostable fixed part are respectively input and output device.