SU847039A1 - Registering device - Google Patents

Description

(54) RECORDING DEVICE

one

The invention relates to instrument engineering and can be used to record information presented in discrete form, for example, in the onboard instrument cluster of aircraft equipment.

A device for photographic recording of measured or calculated quantities is known, comprising illuminated light lines for transferring light pulses to a photographic material and pulsed light sources, the operation of which is controlled by an electronic control block. In this device, the detected value acts on an electronic control unit that ignites a pulsed light source. The light pulse is transmitted by a corresponding light guide to the surface of the photographic material, illuminating a point on it. The sweep along the time axis is achieved by moving the photographic material with the help of the rewinding motor 1.

The closest to the proposed device in its technical essence and the achieved result is a recording device containing a cassette with a photosensitive information carrier, a light emitting diode array and an actuator associated with the control unit. The drive through a tape mechanism provides a rewind of the photosensitive medium, on which discrete light signals are recorded, coming from an LED matrix connected to the electronic switch of the control unit, connecting alternately discrete signals from several sources 2

The disadvantages of these devices are lack of reliability.

ts of their work, as well as large size and complexity of the design, due to the presence of the feed and receiving cassettes, tape drive mechanism, as well as the implementation of LED

20 matrices in the form of a crystal with differential p - n junctions.

The purpose of the invention is to increase reliability, reduce the size and simplify the design.

25

This goal is achieved by the fact that in the proposed device the LED is. The ma-matrix is made in the form of a rotor connected to the drive with an aspol; channels in it, in which

The LEDs and the focusing lenses optically connected with them are mounted on the outer surface of the rotor mounted inside a cassette made in the form of a hollow cylinder, on the inner surface of which the carrier is fixed.

Such a solution eliminates the use of complex mechanical assemblies and simplifies the design of the LED array, which ultimately provides for an increase in reliability, a decrease in size and a simplified design of the device.

FIG. 1a shows a general view of the recorder (the drive and control unit are conventionally not shown); FIG. 16, view A-A in FIG. 1; in fig. 2 - a section of the carrier with illuminated points of the recorded information; in fig. 3 is an electrical chart of the recorder.

The proposed recording device consists of a cylindrical cassette 1, on the inner surface of which a photosensitive photographic material 2 is fixed. In the lower part of the cassette there is a spring clamp 3 used to secure the photographic material 2. In the upper part the photographic material is fixed using the same clamp mounted on the ring 4. Inside the ps cassette there is a LED matrix 5, in the form of a rotor made of a dielectric material; rigidly connected to the shaft of the stepper motor. Channels b are installed in the rotor, in which the LEDs 7 are located, the outputs of which are located on the printed circuit board 8 and in the electric connector 9 are connected to the control circuit (see Fig. 3). At the output of each light channel (see, Fig. 1) focusing lenses 10 are mounted, due to which the light signal of the LEDs is focused to a point with a diameter of 0.5-0.8 mm. The focusing lenses are mounted so that the illuminated points of the recorded information are located in one vertical line (see Fig. 2). Using the ends, the cassette 1 is closed by the upper 1 and lower 12 bases, in which bearings 13 are fixed. In both bases, mounting grooves are made into which a protrusion located on the inner surface of the cassette 1 comes in. This ensures unambiguous assembly of the recorder and interpretation of the recorded information . Rings 14 and 15 for rigid mounting of the bases to the cassette 1 by means of threaded connections. To limit the progress of the LED matrix 5 within one revolution, there is a limiter (not shown) on the upper base 11.

The recorder is assembled as follows.

The photo material 2 is placed in the cassette 1 and fixed on its inner surface with the help of a clip 3 ,. . A ring 4 is superimposed on the yoke with the same spring clip. The assembled assembly is worn on the matrix 5, and installed on the lower base 12, after which

The Q cassette is screwed on the ring 15.

On top of the cassette is placed the upper base 11 and is attached to it with a ring 14.

A variant of the recorder is possible in which the LED array is stationary and the carrier cassette is rotatable and kinematically connected to the drive.

The logical coincidence cells (see Fig. 3) are used as

0 integrated circuits (2I-NOT) with an open collector output, for example, type 133LB8 or 106LB11. There are four such cells in one package. Resistors

5 R1 RN are used to adjust the brightness of the matrix LEDs VI - VK.

In the initial state, the LED does not light up. To the first inputs of the cells

0 matches from the source of information, a positive potential is applied, for example, 5 V, however, this does not cause the LEDs to light up. For recording information controlling

The circuit produces a rectangular positive pulse with an amplitude of 5 V and a duration of 0.5 s. This pulse is applied to the second input of all matching cells. When the match. positive potentials

0 cell inputs, the LED at its output illuminates for the duration of the write pulse. At the end of the recording, the control circuit generates a short pulse applied to the winding of the stepping motor, as a result the matrix connected with it rotates and the recorder is ready for the next recording act.

Therefore, the use of

The proposed LED matrix device in the form of a rotor mounted inside a hollow cassette with a nozzle eliminates the tape mechanism and simplifies the matrix design, which ultimately improves the operation of the device, S reduces its size and simplifies the design as a whole.

Claims (2)

1. Author's certificate of USSR №136064, cl. G OJ, D 9/42, 1961. 2. CCQg copyright certificate    ° R AZ / 14,10.06, 1968 (prototype). . i S DDDD -h -h D D .2 + fe