SU1573416A1 - Matrix tactile transducer - Google Patents

Abstract

The invention relates to instrumentation engineering and can be used in industry to determine the shape, size and position of parts and their physical properties. The aim of the invention is to reduce measurement errors by identifying measurement channels. A sinusoidal signal generator 11 generates a signal which, after dividing frequency divider 13, modulates the main signal in amplitude modulator 12. The received signal through switch 1 is fed to the elements of the sensing node 2. Depending on the properties of the control object, M information signals are received, which, after appropriate processing and amplitude selections are fed to a video monitoring unit, where monitored parameters are displayed. 1 il.

Description

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The invention relates to instrumentation engineering and can be used in industry for determining the shape, size and position of parts and their physical properties. The purpose of the invention is to reduce the measurement error by identifying the measurement channels.

The drawing shows a diagram of a matrix tactile transducer.

The converter contains serially connected switch 1, Sensitive node 2 with n inputs and S outputs, channel block 3 detectors, switch 4, amplifier 5, alternating voltage constant-voltage converter 6, comparator 7, switch 8, m-channel block 9 hours of filters and video monitoring unit 10. 20

In addition, the device contains serially connected generators-fop 11 sinusoidal signals and an amplitude modulator 12, the output of which is connected to the switch 1, sequentially connected frequency divider 13 whose input is connected to the output of the generator 11 of sinusoidal signals, and alternating voltage converter 14 a pulse signal 3 Nal, the output of which is connected to the control inputs of switches 4 and 8, a frequency divider 15 connected between the output of the frequency divider 13 and the second output of the amplitude modulator 12, 3 and the block 16 times ertki whose output is connected to the switch 1 and videokont- ropnomu unit 10.

The converter works as follows.

The control object 17 is located near the sensing unit 2, consisting of n generator and that measuring coils (not shown) forming a matrix of sensitive elements. 4 Generator 11 sinusoidal signals produce a sinusoidal signal ,. which is fed to the amplitude modulator 12 and the divider 13 frequency.

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The output signal from the frequency divider 13 is fed to the variable voltage converter 14 into a pulse signal, which controls the operation of switches 4 and 8, and to a frequency divider 15, the division factor of which, where ha is the number of outputs of the sensitive node 2. The resulting amplitude modulated signal arrives

on one of the n-inputs of the sensitive node 2.

Depending on the properties of the control object 17, the signal from the outputs of the sensing node 2 goes through the detector unit 3 to the switch 4, then is amplified by the amplifier 5, converted into a constant voltage with an alternating voltage converter 6 into a constant voltage and compared in the comparator 7 with an egalon voltage

After comparing, the signal arrives at the switch 8, and since its switching is synchronous with the switching of switch 4, the corresponding signals arrive at the channel block 9 of filters, where they are restored to analog signals by satisfying the condition of the Katelnikov theorem. The received signals are displayed on the screen of the video monitoring unit 10, which is controlled by the scanning unit 16 synchronously with the switching of the switch 1.

Claims (1)

Invention Formula A matrix tactile converter containing a series-connected scan unit, a switch and a sensitive node with n inputs and a wave outputs, a generator of sinusoidal signals, a series-connected amplifier, an AC-to-DC converter and a comparator and a video monitor unit, the control input of which is connected to the scan unit, characterized in that, in order to reduce the measurement error, it is equipped with a series-connected m-channel detector block and a second switch, including between the outputs of the sensing node and the amplifier input connected in series by the third switch and m-channel filter unit connected between the comparator output and the inputs of the video monitoring unit connected in series by the first frequency divider connected to the output of the sinusoidal signal generator, the second frequency divider, which division K 2sh, and the amplitude modulator, the second input of which is connected to the generator of sinusoidal oscillations, and 515734166 the output is connected to the input of the first one between the output of the first divider, and the variable-frequency converter and the control inputs of the second voltage into a constant, switched and third switches.