SU1403363A1 - Touchless control device - Google Patents

Abstract

The invention can be used in input and output devices. The sensor control device contains a clock generator and the elements AND-HE 7.8, sensor cells (S) 2-5, each of which consists of a sensor platform (15-18) in the form of rectangular plates located in the corners of the rectangle. one plane and separated from each other by a gap, providing electrical isolation of them from each other, and a resistor (11-14), a distributor of 6 pulses, integrators 9,10 in the form of RC-chains, built of resistors 28,29 and capacitors 30.31, respectively. Sya 2,4,5 contains the elements AND-NOT 19-21, respectively, sya 2-4-elements OR 22-24 and -inverters 25-27, respectively. The touch control device has enhanced functionality. 3 h, n, f-ly, 2kp, § cl

Description

; Pi3o6peTeHHe belongs to the pulsed TJexuHKe and can be used in input and output devices. five

The aim of the invention is to extend the functionality by effecting the magnitude of the amplitude of the output signals on the number of the touch pad when touching the latter, as well as creating a keyboard to control the position of the object on the display screen with one finger of the operator due to the specific location of the touch pad of the device. , 15 I FIG. 1 shows the electrical and functional diagram of the proposed | device; figure 2 - the location of the sensor pads.

 Sensor control unit 20 Contains clock generator 1, first, second, third and fourth sensor cells 2–5, distributor 6 | 1 pulses, first and second elements AND –NE 7 and 8, first and second integrators 25 rators 9 and 10.

Each sensor cell 2–5 contains resistors 11–14, the first terminal of which is the input of the cell, and the second pin is connected to the sensor area 30–15–18. The first 2, the third 4 and the fourth 5 sensor cells contain the elements AND NOT 19-21 the first inputs of which are connected to the touch areas 15,17 and J8, the first 2, the second 3 35 and the third 4 the sensor cells contain Elements OR 22-24 and Inverters 25-27. And the first inputs of the elements OR 22- p4 are connected to the sensory pads - Qi 15-17 cells, and the second inputs of the elements OR 22-24 through inverters 25-27 are connected to the inputs of cells 2-4. The inputs of the cells 2,4 and 5 are connected respectively with the second inputs of the elements AND-NOT 19-21 of these cells.

The output of the clock generator 1 is connected to the input of the distributor 6 pulses, the outputs of which are connected to the inputs of the sensor cells 2-5, respectively. The outputs of the inverters 9-10 are the outputs of the device. The inputs of the integrator 9 and JO are connected respectively to the outputs of the elements AND-NOT 7 and B. The inputs of the first element AND-NOT 7 are connected to the outputs of the elements OR 22 and 23 of the first 2 and second 3 and the outputs of the elements AND-NOT 20 and 21 of the third 4 and fourth 5 sensory cells. Inputs

five

0 5

0 5 0 5

0

five

the second element, 8 is connected to the outputs of elements I-NC 19 and 20 of the first 2 and fourth 5 and outputs of the elements OR 23 and 24 of the second 3 and third 4 sensor cells, respectively.

The distributor 6 pulses can be built on a counter with a decoder.

As integrators 9 and 10, RC circuits made up of resistors 28 and 29 and capacitors 30 and 31 can be used.

The touch control works as follows:

In the initial state, the generator produces rectangular pulses arriving at the input of the distributor. From the output of the distributor 6, the pulses that are shifted relative to each other in phase are fed to the inputs of the sensor cells 2-5. Since, in the initial state, the operator does not touch the touch pads 15-18, the capacitance of the latter relative to the ground is small, the delay of the impulses on the RC chains formed by the resistances of the resistors 1 1 -14 and the capacitances of the touch pads 15-18 is insignificant. As a result, the inputs of the elements OR 22-24 pulse signals are received in antiphase, and, therefore, the potential of logic 1 is maintained at their outputs. At the inputs of the same AND-NE elements 19-21, signals coinciding in phase arrive. Consequently, at their outputs, pulses are inverse to the input. Since each NE-elements 7 and 8 receive signals from two OR elements, 22 and 23, and two IS-NOT 20 and 21 elements, the output signal of each of the AND-NE elements 7 and 8 in the initial state is some sequence of pulses. Passing through integrators 9 and 10, these pulses are converted into potential signals having a certain value. In the initial state, the device generates output signals characterizing the initial coordinates of the controlled object on the plane.

When the operator touches any touch pad 15-18, additional capacity is introduced into the RC circuit formed by her. In this case, the delay of the pulse fronts on this circuit increases significantly. As a result, negative impes appear at the outputs of the elements OR 22-24; The durations of which are determined by the signal delay on the CS circuit, and at the outputs of the AND-NE elements 19-21, the duration of the generated negative pulses is reduced. At the same time, the duty ratio of the positive pulses received at the outputs of the AND-HI elements 7 and 8 changes, so when the first sensor cell 2 touches the pad 15, it increases at the output of the IS-NE element 8 and decreases at the output of the IS-NOT element 7. When the pad 16 touches the second sensor cell 3 decreases the duty cycle at both outputs, touching the pad 17 of the third cell 4 leads to an increase in the duty cycle of the output signal at the first 7 and decreasing at the second 8 NAND elements, touching the pad J8 of the fourth cell 5 increases the duty cycle at both outputs. As a result, in the first case, the output potential at the output Y increases and at the output X decreases, in the second case both output signals increase, in the third case the potential at output X increases and in Y decreases, in the fourth case both signals decrease. As a result, when you touch the first 15, second 16, third 17 and fourth 18 touch pad, the output signal of the device

P f-1 y

the invention

1. A sensor control device containing a clock generator, the first and second elements of NAND, the first, second, third and fourth sensor cells, each of which consists of a touch pad and a resistor, and the first, third and fourth sensor cells contain an AND element -NO, and the inputs of all sensor cells are connected to the corresponding sensor pads through the corresponding resistors and in the first, third and fourth sensor cells also to the first inputs of the corresponding elements-AND-NO, the inverse output of the fourth sensor The first cell is connected to the first input of the second NAND element, characterized in that, in order to expand its functionality, by varying the amplitude of the output signals from the number of the touch pad when the last one is touched, the pulse distributor, the first and the second integrators, in the first, second and third sensory

0 cells are entered -NE and OR, and in the first and third sensory cells the input of the element is NOT connected to the input of the cell and the second input of the element 4 NAND, the output of the element NOT- to the first

Is used in such a way that the reflected input of the element OR, the second input

There is a change in the coordinates of a point moving in the plane of the rectangular coordinate system along the bisectors of the VI, I, II, and III quadrants, respectively.

Since the amount of capacitance introduced by the operator in some limits is proportional to the area of its contact with the touch pad, the values of the output signals Y and X are also dependent on it. As a result, it becomes possible to change the contact surface simultaneously with all the pad coordinates of the object being moved on the display screen. At the location of the touch pads, as shown in

which is connected to the touch pad, the output of the element OR is connected to the non-inverting output of the cell, and the output of the element NAND to the inverting output of the cell, in the second sensor cell the output of the element is NOT connected to the input of the cell, the output of the element NOT to the first input of the element OR, the second input of which is connected to the touch

45, and the output of the element OR is connected to the output of the cell; in the fourth sensor cell, the input of the cell is connected to the second input of the NAND element, the output of which is connected to the output of the cell,

The gQ non-inverting output of the first sensor cell is connected to the first input of the first NAND element, the inverting output of the first sensor cell to the second input of the second NAND element,

2, an approximate corresponding gg output of the second sensor cell is provided, the submission of the center position is surfaced to the second input of the first contact element (shaded area). The IS-NOT and the third input of the second and the position of the controlled object from the element AND-NOT, inverting the output relative to the coordinate axes. The third sensor cell is connected

which is connected to the touch pad, the output of the element OR is connected to the non-inverting output of the cell, and the output of the element NAND is connected to the inverting output of the cell, in the second sensor cell the output of the element is NOT connected to the input of the cell, the output of the element NOT to the first input of the element OR, the second whose input is connected to the touch

the site, and the output of the element OR to the output of the cell, in the fourth sensor cell, the input of the cell is connected to the second input of the element NAND, whose output is connected to the output of the cell,

the non-inverting output of the first sensor cell is connected to the first input of the first NAND element, the inverting output of the first sensor cell to the second input of the second NAND element,

FI.2

Claims (4)

1. A touch control device containing a clock generator, the first and second NAND elements, the first, second, third and fourth sensor cells, each of which consists of a sensor pad and a resistor, and the first, third and fourth sensor cells contain an And NOT, with the inputs of all sensor cells through the corresponding resistors connected to the corresponding sensor pads and in the first, third and fourth sensor cells also with the first inputs of the corresponding elements AND NOT, the inverse output of the fourth sensor cell the yoke is connected to the first input of the second AND-NOT element, characterized in that, in order to expand the functionality by implementing the dependence of the amplitude of the 25 output signals on the number of the touch pad when touching the latter, .. a pulse distributor, first and second integrators are introduced into it, in the first, second and third sensory 30 cells, the NOT and OR elements are entered, and in the first and third sensor cells the input of the element is NOT connected to the input of the cell and the second input of the element is' <that AND NOT, the output of the element is NOT connected to the first input of the OR element, the second input of which is connected to the touch pad, the output of the OR element is connected to the non-inverting output of the cell, and the output of the AND-NOT element is connected to the inverting 40 output of the cell, in the second sensor cell the input of the element is NOT connected to the input of the cell, the output of the element NOT to the first input of the OR element, the second the input of which is connected to the touch 45 pl schadke, and the output of the OR - the exit cell, the fourth sensor cell, the cell inlet connected to the second input of the NAND output of which is connected to the output of the cell, 5θ, the non-inverting output of the first sensor cell is connected to the first input of the first NAND element, the inverting output of the first sensor cell is to the second input of the second NAND element, 55 the output of the second sensor cell is connected to the second input of the first NAND element and the third input of the second of an NAND element, the inverting output of the third sensor cell is connected to the third input of the first NAND element, a non-inverting output of the third sensor cell is connected to the fourth input of the second NAND element, the output is even. the fifth sensor cell to the fourth input of the first AND-NOT element, the output of which through the first integrator is connected to the output of the device, and the output of the second AND-NOT element through the second integrator to the output X of the device, the output of the generator to the input of the pulse distributor, the outputs of which connected to the inputs of the corresponding sensor cells. 2. The device according to claim 1, wherein the pulse distributor consists of a binary counter and a decoder connected in series, the counter input being connected to the pulse distributor input, and the decoder outputs connected to the corresponding pulse distributor outputs, 3. The device according to claim 1, wherein each integrator consists of an RC chain, the integrator input through a resistor connected to the integrator output and the first capacitor output, the second ed output of which is connected to a common bus, 4. The device according to claim 1, with the fact that, in order to create a keyboard for controlling the 15 of the object on the display screen with one finger of the operator, the touch pads are made in the form of rectangular plates located in the corners of a rectangle in the same plane and separated by a gap, ensuring their electrical isolation from each other.