SU141939A1 - Recording device - Google Patents

Description

This invention relates to the field of measuring. Technics and, in particular, relates to recording devices.

Recording devices are known: - - automatic potentiometers with a compensating device, in which the light-sensitive elements are attached.

The present invention aims to increase the ngde.zhnost recording devices through the use of contactless contactless compensation element. A distinctive feature is the performance of a compensating source of voltage 15 in the form of a chain of successively co-ordinated standard resistances, which serve to supply them with sensational impositions through key diode circuits; controlled by photovoltaic cells, when the latter are transmitted through a coding die.

To maintain the constancy of the compensating pair Xenig1, current stabilizers may be used, introduced into the circuit of each patchy | diode circuit.

The drawing shows an electrical circuit diagram of the proposed back-up recording device with a digital output.

The device contains an electronic control unit UE, a reversible electric motor RD, a reducer P, an encoding CD disk, a photoelectric reader FSU with US amplifiers (1,2,3 ... N. source of compensating voltage IR, N, graphic recorder GH digital recorder CR. To the input of an electronic amplifier, a difference is applied between the measured U- and the compensation /,., Voltages. The signal of a different network of the indicated voltages is amplified by an electronic amplifier UE and is fed into the control winding of the reference relay; p p rotates the CD in the direction that reduces the imbalance.

One single day QDD has a series of concentrically divergent; the first square zones with transparent and opaque areas. Tx zones equals the number of code bits, and the distribution pattern of transparent and, inconspicuous areas is determined by the type of code used. The coding disk is located between the light source L and the system of photosensitive elements (photodiodes) F, providing a link code. The signals taken from the photodiodes at different angles of rotation of the disk / LED are amplified by an amplifier. The number of photosensitive elements Ф and amplifiers is equal to the number of code bits. Depending on whether element F is lit or not, at the output of the amplifier the US create either a negative or a positive signal (with an illuminated element F, a negative potential, with an unlit one, a positive potential). Signals from the amplifiers are fed to a digital CR recorder and at the same time to the source of the voltage of the TLC. The voltage source voltage source voltage source voltage source (ISC) shown on the wiring diagram is designed for a binary code. Its purpose is to convert code signals proportional to the angle of rotation of the coding disc into proportional continuous compensation Uk. The source of compensating voltage contains a chain of calibrated resistances R, R. 2R diode keys D1a, D2a, DZa. .. and, D2b, DZb. . . ,

and current stabilizers Cj, C2, and Cz can also be used. . . The number of resistances, stabilizers, and diode keys is equal to the number of stroke discharges. Depending on which voltage the voltage received from the outputs of the amplifiers of the DC is connected to the diode keys, one or the other diode key opens. As a current stabilizer C ;, Co, Cz. . . emitter repeaters are used to which stable power is used. A nanoparticulate U formed by a circuit is proportional to the binary code, and therefore, to the angle of rotation of the encoding disk.

There is a graphic registration of changes in the number of the studied process. Graphic recording is done with a pen on paper tape. The carriage carrying the stylus of the GH recorder is moved by a reversing motor. In this way, the graphical and digital pernciran of the process under investigation is carried out simultaneously.

Subject and title

L Recorder of the automatic potentiometer with reversible electric motor, control current | omcensacin and a digital output, in which a coding disk mechanically connected to the motor axis is used, interposed; 1, in the illuminator and in a number of sensitive elements, the number of which: x corresponds to the number of code bits, characterized in that with. You have to reliably operate the device by using a contactless compensation element, the source of compensating and voltage is detected in the form of a chain of series-connected reference resistances used to supply them with compensation and voltage through key diode circuit, controlled by the photo-lpektrncheskimi elements when blowing out the past through the coding disc.

2. In the iio device, p. 1 is used to maintain the constant of the compensating voltage of current regulators introduced into the circuit of each key diode circuit.

9SU