SU440683A1 - Device for visual indication of numbers - Google Patents

Description

The invention relates to computing and can be used to output information from the output of digital computing and measuring devices and, in particular, to indicate the measured values of the azimuth and range or other sign and numerical information on board aircraft.

Currently known indicator devices of this kind can be divided into the following main types.

1. Devices based on the use of special gas discharge and luminescent devices. Due to a number of organically inherent flaws, such devices have not yet found any widespread use on board aircraft.

2. Electromechanical indicators containing in each decimal place separate digitized drums with a drive and control circuit in which binary-decimal codes are used.

However, the known devices do not provide sufficient accuracy of the display and have a complex structure.

The aim of the invention is to improve the accuracy of the display and simplify the design of the device.

For this, the digitized drums of the individual decimal bits are rigidly connected to a common shaft connected simultaneously to the electric motor and the feedback sensor, the output of which is connected to the input

control circuits, and the outputs of the latter are connected to low-inertia lamps for illumination of digits of bits. The drawing shows a diagram of the device. The device for visual indication of numbers contains a digitized drum 1, motor 2, feedback pulse sensor 3, backlight 4, electronic control circuit 5, reader 6, backlight 4 control circuit 7, output register 8 of the measuring or computing device, circuit matches 9, counter 10.

The device works as follows. The drum 1, on whose surfaces the digits O to 9 of the required number of decimal places are applied, is driven by the motor 2.

Pa of the axis of the drum 1 is fixed to a feedback pulse sensor 3, which forms at the moment when the digit O is in the center of the reader, a reset pulse to the electronic control circuit 5.

In addition, the feedback pulse sensor 3 forms a second pulse train (10

pulses per one full turn of the drum),

arriving at the counting output of the electronic control circuit 5. Pulse | 1 of this sign is formed at the moment of finding, and any of the digits from 0 to 9 in the center of the reader window.

The electronic control circuit 5 includes a counter on 10 positions (recalculated-binary-decimal decade) and several coincidence circuits (according to the number of indicated-decimal digits). At the moment of coincidence of the number and counter with the value of the number in the corresponding decade of the memory 8, a pulse is generated to the control circuit 7, which lights the illumination lamp 4 of this decade decade.

The displayed number is observed through the window of the matching device 6.

The speed of rotation of the drum 1 is chosen so that the frequency of occurrence of in-. The digit in the window of the reader 6 was a dus-fatn-a-dl-view in the window of the reader 6 of a still and not flickering image due to the inertia of the eye. The flash duration of the lamp 4 is determined.

expression t -.

- L1 kost - and about -rzh-eny - depends on -f-energy-flash and can be adjusted by changing the speed of rotation of drum 1 or

the energy of the flashes of the lamp

The indicator is connected with the electronic control circuit 5 and the memory of the measuring or computing device by means of two wires-transmission of synchronizing feedback pulses and one by one.

 the wire-control of the illumination lamps 4 for each ipDicable decade decade, i.e., not many times less than in the known device.

5 Binary-decimal code used in memory can be of any kind. The only thing

this condition - in the same code should

work and the counter of the electronic circuit of the controller .-,

10 The mechanical part of the indicator device is quite simple, since there are no nodes,

requiring high precision manufacturing.

There are no requirements for

stability of the drum rotation speed1.

15 The proposed device can be used to indicate not only numbers, but

and all sorts of signs, inscriptions and commands.

Subject invention

20

A device for visual indication of the number, expressed, for example, by binary-decimal code, containing digitized barrels of decimal digits, connected by water to a control circuit connected to a computer memory device, characterized in that

In the construction of an accuracy of –– and –––––––––––––––––––––––––––––––––––––– ––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––– to low-inertia lamps, backlight digits bits.