SU488235A1 - Display device - Google Patents

Description

one

The invention relates to the field of instrumentation and can be applied to instruments for monitoring the parameters of power plants.

A device for indicating is known, comprising a descrambler connected to a register, keys, connecting with indicator elements, separating elements, such as aiodes, logic elements with a linear scale.

In the process of monitoring parameters, the operator, especially in conditions of increased load, which is observed on board an aircraft, often needs to know not only the value of the parameter itself, but also the direction of its change (trend), i.e., increase, decrease or variability of value.

However, the known indicators do not provide an indication of tendency, therefore, to determine it, the operator has to stop in the middle of the indicator in order to wait and determine in which direction the parameter values change.

This requires a significant amount of time spent on monitoring, and the more, the slower the parameter changes.

The proposed device aims to eliminate this disadvantage of known inactivators.

This is achieved by introducing a reversible pulse dispenser in the device.

the comparison unit, the And elements, the trigger, the delay unit, and the common electrodes of the indicator elements are combined into soils, the outputs of which are connected to the inputs of the corresponding keys and the anodes of the diodes, the cathodes which are connected to the output of the common key, one input which is connected to the power bus, and the other is connected to one output of the comparison unit, the other outputs of which are connected to the trigger inputs, the outputs of which are connected to the inputs of the reversible pulse distributor, the outputs of which are connected to the single inputs of the corresponding keys, the other inputs of the cat The switches are connected to the power supply, the input of the reversing distributor and the pulses are connected to the generator input, one group of inputs of the comparison unit is connected to the output of the receiving register, another group of inputs to the outputs of the census registers, whose inputs are connected to the outputs of some electrical elements. the inputs of which are connected to the outputs of the receiving register, and the second - with the input of the delay unit, the output of which is connected to the first inputs of the other elements “And, the second inputs of which are connected to the inputs of the device.

The switching frequency is such that a slight blink is visually observed, which with such switching will be perceived as a traveling wave along

scales. With a constant parameter value, the power is supplied to all elements and a statically fixed glow of the light profile indicator is provided.

The block diagram of the device is shown in the drawing, where: 1 - LEDs; 2 - scale; 3 - keys; 4 - elements 5 - diodes; 6 - decoder; 7-receiving register; 8 - elements 9 - device inputs; 10 - delay unit; 11 - keys; 12 - diodes; 13 - shared key; 14 - reversible pulse distributor; 15 - generator; 16 - the trigger; 17, 18 — significant outputs of the comparison block 19; 20 - zero output of the comparison block; 21, 22 — groups of inputs of the comparison unit; 23 - Elements 24 -, census registers.

The operation of the device is as follows.

The receiving register 7 records the code corresponding to the value of the measured parameter in the previous measurement cycle. In accordance with the value of this code, a signal is received by the decoder 6 to the input of the corresponding key 3, the LED 1 connected to its output is illuminated, and through the element NOT 4 and diodes 5 signals are sent to the inputs of all previous keys 3, illuminating all downstream LEDs 1 as a bar . The height of this bar relative to the scale 2 indicates the value of the displayed parameter. The code recorded in register 7 is also fed to the inputs 21 of the comparison block 19.

With the arrival of the signal "Census after the completion of the next measurement cycle, the elements 23 are opened and the code of the previous measurement cycle enters the census registers 24, from where it arrives at the inputs 22 of the comparison unit 19. The delay time of the delay unit 10 is selected longer than the duration of the census signal And 23 elements are closed, and elements 8 are opened, and the information of the new measurement cycle is recorded in the receiving register 7, fed to inputs 21, and through the decoder 6 a new position is displayed. LED column 1.

As the measured parameter increases, i.e., the code value of the new cycle is greater than in the previous cycle, the signal appears at the significant output 17 of the comparison block 19, sets trigger 16 to the single position, which includes the distributor 14 in the forward direction, and pulses with the output of the generator 15 is received sequentially at the outputs of the distributor. In this case, the keys 11 are alternately opened and the power is supplied to the groups of LEDs from bottom to top, ensuring that the light bar runs from bottom to top.

When the measured parameter decreases, the operation is carried out similarly, but the signal of the comparison unit 19 arrives at output 18 and the LED groups are connected in reverse order, ensuring that the light pointer runs from top to bottom, i.e. the parameter decreases.

If the parameter remains unchanged, the codes at inputs 21 and 22 will be equal and the signal will go to zero output 20 of comparison block 19, thereby opening the common key 13 and powering all three groups of LEDs, which ensures a steady flashing of the bar within the indicated level, and therefore displayed

parameter constant.

F O r m u l a i 3 O b 1 p e te n u

A device for indicating, containing a register descrambler, keys connected to indicator elements, separation elements, such as diodes, logic elements with a linear scale, characterized in that, in order to expand the field of application, a reverse pulse distributor, a comparison unit , elements “H, trigger, delay unit, and common electrodes of indicator elements are combined into groups, the outputs of which are connected to the inputs of the corresponding switches and the anodes of the diodes whose cathodes are connected to the common key output, one input of which is connected to the power bus, and the other to one output of the comparison unit, the other outputs of which are connected to the trigger inputs, the outputs of which are connected to the inputs of the reversing pulse distributor, the outputs of which are connected to one input of the corresponding keys, other inputs which are connected to the power bus, the input of the reversible pulse distributor is connected to the generator input, one group of inputs of the comparison unit is connected to the output of the receiving register, another group

inputs - to the outputs of the census registers, the inputs of which are connected to the outputs of some elements “And, the first inputs of which are connected to the outputs of the receiving register, and the second to the inputs of the delay unit, the output of which is connected to the first inputs of other elements“ And, the second inputs of which are connected to device inputs.

Census