SU452847A1 - Display device - Google Patents

Description

(54) DEVICE FOR INDICATION

one

The device relates to the field of automatic control and registration of processes and can be used in the construction of systems for the automatic control of production processes, for example, to isolate and register the operation of the first technological protection.

A signaling device is known comprising sensors and two capacitors. When any signal cell of the first signal arrives at the input, the corresponding circuit ensures its allocation and fixation with flashing light.

However, such a device in each signal cell contains a large number of elements necessary for the implementation of the selection scheme of the first signal.

At the same time, the number of circuits for selecting the first signal in a row should be equal to the number of control points, which, with an increase in the number of the latter, leads to significant hardware costs and inconvenience in operation. In addition, the display of information about the first signal is produced by physical symbols (1.migram light), which requires the use of individual lamps in each signal cell. rigidly connected, as a rule, with pneumatic circuit.

In order to eliminate these drawbacks, a mosaic digital indicator is installed on the glow discharge devices connected to sensors of the test object and controlled by two linear elements connected with it according to a special circuit.

FIG. 1 shows a block from the device; in fig. 2 is a schematic block diagram of the indicadia.

The device contains sensors 1 of the control object, an indication unit 2 with resistors 3, diodes 4 and glow discharge devices 5, a block of sensing elements 6, a blocking relay element 7, a switch 8 and a block of switching elements (diodes) 9.

The device works in the following way. In the initial state, the relay elements 6 and 7 are provided. When the contacts of any of the sensors 1 are closed, the storage voltage through the closed contact of the switch 8, the corresponding resistor 3 and the diodes 4 of the display unit 2 connected by the input buses and diodes 9 to the sensor whose contacts are closed, the sensor’s own contacts, the first open elements 6 and 7, is applied to the control circuit of element 6, the latter is triggered, de-energizes the first control contact with the first opening contact, excites element 7 through the second closing contact and through the third closing contact connected in series with the second disconnecting contact of Element 7, through resistors 3 to all devices 5 of the glow discharge of block 2 of the ignition voltage indication. When element 7 is triggered, the latter is self-blocked through its own second closing contact, and through the first closing contact, connected sequentially; 2 indications, a glow circuit of devices 5 of the glowing discharge is formed, which do not participate in the formation of the 1СФФР that constitute the number of this sensor. Element 6 is reset. However, exx) excitation at a later time is blocked by the first softening contact of the element 7, which remains excited until the voltage is relieved from the nominal switch 8, thus, only the number of the primary switch is secured). , Us; - | 1gsgvo can work with jdodMM 4iu.:jioM d / iTuiKOB. Since Hn4H.MMfWiiH is about iiujiHOM furiiiijie n |) e; 1C-gaval in the form of deci siinchichy Uiceji, the addition of each successive block of indicators, t, e, of the next bit, expands the capacity of the device: ten times. To connect to the input buses of the sensor indication unit 2, when the number of these units is more than one, use diodes 9 are used. The number per sensor corresponds to the number of decimal places needed to indicate the sensor number. Thus, for example, the sensor with the number 258 must: be connected in display unit 2, designating the discharge of hundreds, with the second input bus, and the decimal wiring of the tens and units, respectively, of the fifth and eighth input wages, etc. Subject of the invention. A display device comprising sensors, the outputs of which are connected to a block of sensitive elements, a display unit, a block of connecting elements, a switch and two voltage sources, the negative terminals of which are combined and connected to the power supply circuit, for the purpose of advanced Due to the functional capabilities of the device, a blocking relay element is inserted into it, one output of which is connected to one of the inputs of the display unit, the input of each discharge is connected through the switch-off unit to the output of the corresponding sensor; the outputs of the block of sensitive elements are connected to the corresponding inputs of the blocking relay (1Х) element, the other output of which is connected to the second input of the block of sensitive elements; The positive terminal of the voltage source is connected through a switch to the voltage input of the memory of the indication unit, and the positive terminal of the voltage source BTOpoixi is connected to the input of the ignition of the sensor unit.

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