SU947770A1 - Device for representation of electrical value as image - Google Patents

Description

The invention relates to a measurement technique, and more specifically to the design of electrical measuring instruments for figuratively representing a measured quantity, and can be used. Used in the design of electrical measuring and indicating devices with a light scale.

A device for figuratively representing a measured value is known, which contains a reference voltage divider, a light scale and a switch block, one of the groups of inputs of which is connected to a reference voltage divider, and the output is connected to a light scale, and the light scale elements have one common electrode, and the second electrodes are connected independently to the switch unit, the elements of the light scale are constantly excited. The type of reference obtained on a scale is light from the line.

The device allows an indication of the results of electrical measurements in the form of a luminous line, the length of the line being proportional to the measured value 1,

The disadvantage of this device is that in its design

Includes a complex node - a block of switches. In addition, the light scale with such a control scheme consumes considerable power, since at the same time a number of elements of the light scale are excited. The reliability of the information displayed by the device is high / since the failure of one of the scale elements will result

10 to an increase in the read error by the operator of only one of the numbers.

It is also known a device for figurative representation of an electrical quantity, comprising an analog converter — the number of pulses, a reset unit, a counting ring switch, and its input and the input of the reset unit are connected to the analog converter output — the number of pulses,

20 counting-group ring switch, the input of which is connected to the output of the counting ring switch and the matrix of the elements of the light scale, and the bus rows of the matrix

25 are connected to the outputs of the counting ring switch, and the column buses with the outputs of the counting-group ring switch are also connected; in addition, the reset unit is connected to the control

Claims (3)

30 inputs of a counting ring switch, a counting-group ring switch and an analog converter - a number of pulses. The elements of the light scale are excited periodically with a frequency at which the eye does not distinguish the twinkles of the Pitchfork of the readout obtained by the scale, illuminating the mark 2.. The drawback of the device is the low reliability of the display of information, since the failure of one of the elements of the gauge scale will result in the operator not being able to obtain any information about the measured value at some time. At the same time, the power consumed by the light scale will be quite low, because only one element of the scale is in the excited state. Closest to the present invention is a device for figurative. presenting an electrical value containing a decoder, a switch block and a clock generator, the decoder output is connected to a switch block, and a clock generator is connected to the control inputs of a switch block, the outputs of which are connected to a light scale. The elements of the light scale are connected by a matrix and are excited periodically with a frequency at which the eye does not distinguish flickering. The type of reference obtained on a scale is light from a line 1: 1. The drawback of the device is the considerable power consumed by the light scale in such a control scheme, since at the same time a number of elements of the light scale forming the light line on the scale are excited. The reliability of displaying information by this device is high. The purpose of the invention is to reduce the power consumed by the light scale when indicating numbers higher than the number of two low-order units, while maintaining the reliability of the display information. The goal is achieved by the fact that an arithmetic unit is entered into a device for figurative representation of an electrical quantity containing a decoder, a clock generator and a light scale, one of the input groups of which is an input device for a figurative representation of an electrical quantity, and the second group of inputs is connected to a clockwise generator , moreover, the output of the optic unit through the decoder is connected to the light scale. In this case, the arithmetic unit can be made in the form of an adder. The drawing shows a block diagram of the device. The device contains an arithmetic unit 1, a clocking generator 2, a decoder 3 and a light scale 4. The device operates as follows. One of the groups of inputs of the arithmetic unit 1 serves the code corresponding to the value of the displayed value. From the second group of inputs of the arithmetic unit 1, pulses are output from the output of the clock generator 2 to the input corresponding to the youngest bit. The pulses are borehole, for example, equal to two. In the first half of the pulse sequence period, when a pulse perceived as a low-order unit is applied to the second group of inputs of the arithmetic unit 1, a code corresponding to the number (d + T) appears at the output of the arithmetic unit 1, where d is the displayed value (arithmetic block 1 is designed as an adder). If the arithmetic unit implements B1 read the input codes, then its output is a code corresponding to the number (dl). Bo the second half of the pulse sequence period, when the second group of inputs of the arithmetic unit 1 does not receive a pulse at the output of the arithmetic unit is a code corresponding to the number d. The periodically changing code from the output of the arithmetic unit 1 is supplied to the decoder 3. The decoder 3 converts the codes supplied to it into a signal to control the light scale 4. At the same time, a position code takes place at the output of the decoder. Due to the arrival of a periodically varying code at the input of the decoder, the control signals of the light scale 4 also periodically change. As a result, the elements of the light scale are periodically excited, corresponding to the values of d and (d + l), if the arithmetic unit 1 implements summation, and d and (d-1), if arithmetic -. The tic block implements subtraction. The frequency of the pulses of the clock generator is chosen large enough so that the operator's eye does not distinguish between flickers. As a result, the operator observes on the light scale a dynamic label of two excited elements. Depending on the specific implementation of the decoder and the light scale, various variants of their connection to each other are possible. In particular, the elements of the light scale can be connected to the decoder independently from each other by 2q pins, if one common common electrode and other electrodes of the same name (q + 1) pins, or the elements of the light scale can be connected in series and connected to the decoder by nodes of different electrical connectors genera, and also the beginning and end concatenated elements (q + 1) conclusions. In addition, the elements of the light scale can be connected by a matrix q m p, where q is the number of elements of the light scale, m is the number of rows, an is the number of columns of the matrix, and are connected to the decoder by buses of rows and columns of the matrix of elements (m + n). All possible embodiments of the connections between the decoder and the elements of the light scale entail only a change in the paths of current flow through the buses connecting the elements of the light scale and the decoder. Introducing an arithmetic unit into the device, one of the groups of inputs of which is the input of the device, the second is connected to a clock generator, and the output is connected to the input of the decoder, while maintaining high reliability of the display of electrical quantities, ensures a reduction in power consumption, as the information is displayed dynamic luminous label of two light-emitting elements. I. Claim 1. A device for figuratively representing an electrical quantity, comprising a decoder, a clock generator and a light scale characterized by iGMf that, to reduce power consumption, an arithmetic unit is inserted, one of the groups of inputs of which is an input of a device for figuratively representing an electrical quantity, and the second group of inputs is connected to a clock generator, and the output of the arithmetic unit through the decoder is connected to a light scale. 2. The device according to Claim 1, which is based on the fact that the arithmetic unit is designed as an adder. Sources of information taken into account in the examination 1.Patent of France I 2149364, cl. G 01 R 13/00, 1973. 2. Authors certificate of the USSR 346673, cl. G 01 R 1/00, 1970. 3. Authors certificate of the USSR I 759965, cl. G 01 R 13/00, 1977.