FR2522223A1 - ELECTRONIC TIME CONTROL DEVICE - Google Patents

Abstract

THE PRESENT INVENTION CONCERNS TIMED ELECTRONIC CONTROL DEVICES. THE CONTROL DEVICE, OBJECT OF THE INVENTION, INCLUDES A SELECTION DEVICE 1 CONSTITUTED BY AN INTEGRATED CIRCUIT 2 NEEDLE "ONE TO EIGHT" INCLUDING NINE TERMINALS X, XO, AND X1 TO X7, AMONG WHICH A COMMON TERMINAL X IS CONNECTED TO ONE OF THE INPUTS E2 OF A TIME BASE 3 AND AN XO TERMINAL IS CONNECTED, THROUGH AN INITIALIZATION CIRCUIT, TO THE RESET TERMINAL R OF A TIME COUNTING DEVICE 4. THE OTHER TERMINALS X1 TO X7 ARE CONNECTED, THROUGH SEVEN RESISTORS R11 TO R17 RESPECTIVELY, TO THE OTHER E1 INPUT OF THE TIME BASE 3 WHOSE OUTPUT IS CONNECTED TO THE CLK CLK INPUT OF THE METERING DEVICE TIME 4. SELECTION SWITCHES 11, 12, 13 ARE PROVIDED TO OPERATE RESPECTIVELY INPUT TERMINALS A, B, C OF THE INTEGRATED CIRCUIT 2. A CODING DEVICE, INTERNAL TO THE SELECTION DEVICE 1, IS LIKELY, IN FUNCTION FROM THE POSITION OF THE SWITCHES, CONNECT THE COMMON TERMINAL X TO ONE OF THE EIGHT OTHER TERMINALS X0 OR X1 A X7. THE DEVICE CAN BE USED IN PARTICULAR IN PROGRAMMERS OR TIMERS INCLUDING CAMS WHICH CAN ACTUATE THE SELECTION SWITCHES.

Description

The present invention relates to electronic communication devices

  a time base with a frequency of operation

  The output of the latter is connected to the clock input of a time counting

  see this frequency and transmit, during the delay time cor-

  corresponding, a signal on an output of said time counting device.

  An initialization circuit is connected to the reset terminal of the

time counting device.

  In timed electronic control devices of this type, such as that described in the MOTOROLA technical documentation: "The european CMOS selection", of 1979, page 9-454, the preselection means consist of a single preselection element. , and the time base has a single operating frequency It is the time counting device which provides, on several of its output terminals,

  signals which are issued respectively at multiple periods, one of which

  in a "power of 2" ratio, in the cited prior art, these durations are for example one second, two seconds, four seconds,

  eight seconds, sixteen seconds, thirty-two seconds, sixty-four seconds

  and one hundred and twenty-eight seconds This is a disadvantage because the durations of

  timers thus likely to be selected using the

  positive control are fixed in a rigid manner and can not be selected one by one depending on the operating requirements of

  the machine to be controlled by said electronic time control device

porisé.

  Certainly it would be possible to change the value of the element of pre-

  election to obtain more adequate delay times, but these

  durations will always remain in one report, one in relation to the other

be, and the inconvenience will remain.

  The timed electronic control device, object of the invention is characterized in that it comprises a selection device consisting of

  by a "one-to-one" switching circuit integrated circuit comprising N + 1 terminals

  where a common terminal is connected to one of the inputs of the time base, and a terminal is connected to the initialization circuit, the other terminals being connected, via respectively N 1 preselection elements, to the Other input of the time base Selection switches are provided for respectively controlling input terminals of the integrated circuit, a coding device, internal to the deselecting device being capable, depending on the position of the selection switches

  to connect the common terminal to one of the other N terminals.

  The present invention proposes to allow the realization of a

  positive control electronics timed, which can emit a signal of

  control for any duration of time, selected from

  predetermined durations, these delay times being in

  port relative to each other, and thus susceptible

  to be chosen at will, some very short, of a second for example

  ple, others very long, of an hour for example, taking into account

  the operating requirements of the machine that must be controlled

  said timed electronic control device.

  As shown in FIG. 1, the control device, object of the invention, comprises a selection device 1 whose inputs

  ABC selection are respectively linked to

  for example selector switches 11, 12, 13 This device

  1 also has terminals XI to X 7 connected by

  preselection elements at an input E1 of a time base 3 whose output is connected to the clock input clk of a time counting device 4 whose output is intended to transmit a control signal This selection device 1 also comprises an output XO connected to the reset input terminal R of the time counter device 4 via an initialization circuit 5. It also has a common terminal X

  connected to another input E 2 of the time base 3.

  The selection device 1 comprises in this example an integrated circuit

  one-to-eight sender (MOTOROLA reference MC 14051), whose

  ne VDD is connected to the p 6 the positive of the continuous supply, and whose

  VSS, VSS 'and INH terminals are connected to the negative p 8 of the same power supply.

  The selection device 1 also comprises three high potential-up resistors, R1, R 2, R 3, respectively connected between the terminals.

  of ABC inputs and the positive pole of the power supply.

  The preselection elements are constituted for example by resistor

  R 11 to R 17 which respectively connect the terminals XI to X 7, to an input

  El of the time base 3 These resistors RI1 to R17 are intended to determine

  according to their respective values, a clock frequency.

  The time base 3 consists, on the one hand, of a non-inverting CMOS logic gate 15 and of an invert CMOS logic gate 16, forming part of, for example, an integrated circuit 6 (reference MC 14521 MOTOROLA), on the other hand by a resistor-capacitor network constituted in the following manner This network comprises a capacitor CI and two resistors R 21 and

  R 22, a terminal of which is connected to the input terminal El The other terminal of the con-

  CI densifier is connected, on the one hand to the output of the non-inverting gate 15 whose input is connected to the other terminal of the resistor R 21, other

  part at the entrance of the inverting door 16 The exit of the door 16 is re-

  linked on the one hand to the clock input clk of the time counting device 4, on the other hand to the second input terminal E 2 of the time base 3, terminal

  E 2 to which is connected 2 the other terminal of the resistor 22.

  The time counting device 4, in this example, also makes

  part of the integrated circuit 6 whose terminals VDD and VDD 'are connected to the

  the positive of the power supply and whose terminals VSS and VSS 'are connected to the

negative pole of the power supply.

  The initialization circuit 5 comprises a resistor R 23, one of whose terminals is connected to the reset input R of the counting device

  of time 4, at the terminal XO of the integrated circuit 2 and at a terminal of a capacitor

  sator C 2 whose other terminal is connected to the p 6 positive of the power supply.

  The other terminal of the resistor R 23 is connected to the p 8 the negative of the power supply.

tation.

  When the device is connected to the DC supply, 12 V for example

  the capacitor C 2 of the initialization circuit 5 being discharged,

  The logic reset high caliber is transmitted to the terminal R of the time counting device 4 which is reset. Then the capacitor C 2 is loaded through the resistor R 23 and the logic high goes from 21 S to the R terminal. .

  When certain selector switches 11, 12 are actuated,

  In this example, by means such as cams not shown in the drawing, the integrated circuit 2 switchman to one to eight establishes an electrical connection between its terminal X and terminal X 4, thus selecting, given the internal coding of this circuit, the resistor R 14 corresponding for example to a delay time of 12 minutes This resistance

  R 14 is thus connected by its two terminals to the time base 3 Air-

  if the elements R 14, R 22, R 21, Cl, the gates 15 and 16 constitute an oscillator

  transmitter whose frequency is transmitted to the clock input terminal clk of the time counting device 4 This device 4 divides its frequency

  input so as to obtain at the output Q a signal of a duration of twelve

  utes. Note that the resistors R1, R 2, R 3 are used to set the input potential of the integrated circuit 2 when the switch 13, in this case.

  example with single contact, is in open position.

  When the selector switches are brought to a particular position, in this example all closed, the switch one to eight 2 connects its terminal X to its terminal XO Thus the output of the time base 3, more precisely the output of the door 16, is connected to the entrance

  R of the time counting device 4, so as to reset it to zero.

  The device is then ready to receive a new timer command.

  by a new action on some of its switches 11, 12, 13.

  So for example the configuration in which the switches 12,

  13, are closed and it is open, selects the preselection resistor

  It provides a delay of twenty-eight seconds for example.

  The electronic timer control device, object of the inventiox-

  can be used in particular in timers or timers

  carrying cams some of which can actuate the switches

  Election of the delay times.

Claims (1)

  1 timed electronic control device comprising a time base (3) whose operating frequency depends on the value of preselection means connected between the inputs (E1, E2) of said time base (3) whose output is connected at the clock entrance (clk)   time counting device (4) for receiving this frequency   quence and transmit, during the corresponding delay time, a signal on an output of said time counting device (4), an initialization circuit being connected to the reset terminal (R) of the time counting device (4), characterized in that it comprises   a selection device (1) constituted by an integrated circuit (2) ai   "N-to-N" gatekeeper having N + I terminals <X, XO, and XI to X 7) among which a common terminal (X) is connected to one of the inputs (E 2) of   the time base (3), and a terminal (XO) is connected to the initiating circuit   (5), the other terminals (XI to X 7) being connected, via   respectively of N 1 preselection elements (RI 1 to R 17),   the other input (El) of the time base (3), selector switches   (11, 12, 13) being provided for respectively controlling   input (A, B, C) of the integrated circuit 2, a coding device, in-   dull to the selection device 1, being susceptible, depending on the   position of the selector switches (11, 12, 13) to connect   common (X) to one of the other N terminals (XO or XI to X 7).