SU1198747A1 - Sensory switch-indicator - Google Patents

Description

The invention relates to a pulse technique and can be used in systems of automatic control and management. The purpose of the invention is to improve the reliability of operation due to the indication of the on state. The device contains the first, second and third elements AND-NOT 1, 2 and 10, a touch sensor 3, an LED 4, a transistor switch 5 containing a transistor 6, the base of which is connected _{to the} input control bus switch 5 via resistor 7

the collector is connected to the output bus key 5, and the emitter is connected to a common bus, the first and second drivers 8 and 9 pulses, the trigger 11, the generator 12 pulses. In the description given a functional diagram of the device! And voltage plots. 2 Il.

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The invention relates to a pulse technique and can be used in systems of automatic control and management.

The purpose of the invention is to increase the reliability of operation by indicating the on state.

FIG. 1 shows a functional diagram of the device; in fig. 2 'stress plot. ^L 10

The touch switch contains the first and second elements AND-NOT 1 and 2, the touch sensor-3, the LED 4, the transistor switch 5, which contains the transistor 6, the base of which through 15 resistor 7 is connected to the input bus control key 5, the collector is connected to the output bus key 5, and the emitter is connected to a common bus, and also the first and second drivers 20

8 and 9 pulses, the third element is NOT;

10, the trigger 11, the generator 12 pulses.

The output of the touch sensor 3 is connected to the first inputs of the first and second elements AND-NOT 1 and 2, and 25

The sensor input 3 is connected to the cathode of the LED 4 and the output of the transistor switch 5, whose control input is connected to the anode of the LED 4 and the output of the generator 12 pulses, whose first control input is connected to the second input of AND-NO element 1 and the direct output of flip-flop ₁₁ February inverse output which is connected to the second input of the second element AND-NOT 2, the output of which through the driver 35

9 pulses connected to the first input of the third element AND-NOT 10, and the output of the first element AND-NOT 1 is connected to the second control input of the generator 12 pulses and through the driver 8 pulses to the second input of the element AND-NOT 10, the output of which is connected to the counting input trigger 11.

45

Touch sensor 3 generates a pulse log output. ''one . equal in

the duration of the contact time by the bperator of its output and can be performed according to well-known schemes using background pickup or insertion capacity.

Formers 8 and 9 pulses form a short pulse log. “0” at the cutoff of pulses from the outputs of the elements of AND-NOT 1 and 2.

The pulse generator 12 is a self-oscillating multivibrator with logic AND control inputs.

Touch switch indicator works as follows.

When the operator touches the cathode output of LED 4, and when LED 4 is executed in a metal case, to which the cathode output is connected, the load switches and the LED goes out as in the first touch of the LED 4 case, and when the second touch is on, the LED goes out, ”a * p the load is disconnected and the switch is ready for a new work cycle.

In the initial state, at the output of the sensor sensor 3, the signal level is low (Fig. 2a): at the outputs of the AND-NE elements 1 and 2 (Fig. 26 and c) and the formers 8 and 9 (Fig. 2d and d) is high, at the output I-NE 10 element (Fig. 2e) - low, at the direct output of the pulse shaper 9 (Fig. 2g) - low, and on the inverse (Fig. 2c) - high; the key 5 is open, the generator of 12 pulses is turned off by a low level signal taken from the output of the pulse shaper 9.

Suppose that at the time point C, the operator touches the cathode output of the light-diode 4, the touch sensor 3 (Fig. 2a) is triggered, a high potential appears at its output, due to which the AND-NE element 2 (Fig. 2c) is triggered. At the moment of time t _2, the operator removes his hand.

At the same time touch sensor 3>.

(Fig. 2a) and the element AND-NOT 2 (Fig. 2c)

are returned to the initial state, and the driver of the 9 pulses (Fig. 2e) generates a short pulse, which, inverting on the element I, NOT 10 (Fig. 2e), translates the counting trigger 11 (Fig. 2g and h) into the opposite state. The signals from one of the outputs of the trigger 11, depending on the application of the device can be used to switch the load. Thus, at both inputs of the generator 12 pulses (Fig. 26 and 2g), the resolving potential is applied. The pulse generator 12 begins to produce rectangular pulses, which simultaneously act on the LED 4 and the control input of the key 5, which is being opened at this time. The current from the generator 12 pulses flows through the LED 4 and the key 5 to the common bus device. If the third element I3: 1

.NON 10 does not give an impulse, then the LED *; one 4 goes out, the key 5 closes.

If the frequency of the element AND-NOT 10 pulses * ow is sufficiently high, then the operator * s creates the effect of continuous burning - LED 4.

Thus, while the LED 4 is glowing, its cathode is shunted to the device case via the public key 5, and at times when the key 5 is closed and the LED 4 is off, the device can be controlled.

When you re-touch the cathode of the LED 4, if at this time the generator of 12 pulses impulses a pulse (time C3), then the device does not work first, since the cathode of the LED 4 is grounded through switch 5. As soon as the impulse stops (moment ₄ ) , the touch sensor 3 (Fig. 2a) will change its state, at the output of the element AND-NOT 1 (Fig. 26) a low level will appear, prohibiting the operation of the pulse generator 2.

As soon as the operator releases the ru _; Ku (time 65 ·) / sensor sensor 3 and the element AND-NOT 1 (Fig. 2a and b) are returned to their original state, the driver 8 pulses (Fig. 2d) gives a short pulse, which through the element AND-HE 10 (Fig 2e) returns the trigger 11 (fig.'2zh and h) to its original state, the load is disconnected. The device is ready for a new work cycle.

At the subsequent touch by the operator to the LED case 4 work *

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That of all blocks and elements of the device is repeated.

I

Claims (1)

Claim' A touch-switch indicator that contains a pulse generator, the first and second elements I, a trigger whose input is connected to the output of the first element I, which is, in order to increase the reliability of operation the on-state indication account, a third AND element, a light emitting diode, the first and second pulse shapers, a touch sensor and a transistor switch containing a resistor and a transistor, whose base is connected via a resistor to the input 20 bus of a transistor switch, are inserted into it, the collector is connected to the output The bus is connected to the common key, the emitter is connected to the common bus, and the input of the touch sensor is connected to the output of the transistor 25 key and the cathode of the LED, the output of the touch sensor is connected to the first inputs of the second and third elements I, whose inputs are connected to the forward and inverse respectively ₃ θ the trigger moves, the output of the second element I is connected to the first control input of the pulse generator and through the first driver of the pulses to the first input of the first element I, the output of the third element I through the second 40 The swarm pulse generator is connected to the second input of the first element I, and the direct output of the trigger is connected to the second control input of the pulse generator, the output of which is connected to the anode of the LED and the input of the transistor switch. 1198747 ύ \ WITH' π π ··· π [L FIG. 2