FR2577706A1 - CIRCUIT ARRANGEMENT FOR A CENTRALIZED REMOTE RECEIVER - Google Patents

Abstract

THE INVENTION RELATES TO AN ARRANGEMENT OF CIRCUITS FOR A CENTRALIZED REMOTE CONTROL RECEIVER. THIS ARRANGEMENT INCLUDES AN OPERATING PART 26 FOR THE OPERATION OF THE RECEIVED REMOTE CONTROL SIGNALS, SWITCHING ORGANS 35 COMMANDED BY THE OPERATING PART AS WELL AS A SWITCHING ENERGY ACCUMULATOR 44 ASSOCIATED WITH THE SWITCHING ORGANS, FOR THE 'ACTUATION OF THESE AND IS CHARACTERIZED BY AN ARRANGEMENT FOR THE MONITORING OF THE ENERGY CONTENT OF THE SWITCHING ENERGY ACCUMULATOR 44, WHICH WHEN EXCEEDING DOWN A LIMIT OF THE ENERGY CONTENT DELAYS L' ATTACK OR CONTROL OF THE SWITCHING BODY UNTIL A SECOND LIMIT VALUE OF ENERGY CONTENT IS EXCEEDED, WHICH IS NOT LOWER. THE INVENTION CAN BE USED FOR SAFE CONTROL OF SEVERAL SWITCHING ORGANS.

Description

The invention relates to a circuit arrangement for a receiver of

  centralized remote control, comprising an operating part for the operation of the received remote control signals, switching elements which can be controlled by the operating part and a storage battery of the switching energy associated with the

  switching members for actuating them.

  A centralized remote control receiver of this type is described in CHPS 567 824. This receiver of

  centralized remote control should replace in the receivers

  centralized remote control units previously known as LC-type oscillator circuits or electromagnetic resonance devices in the receiving part and the electromechanical switching device in the operating part, by all-electric circuits, in particular by a switching circuit

  single integrated. As an electronic switching element

  single magnet, this electronic centralized remote control receiver comprises only the switching element actuated by the operating part, for example a

switch by power stroke.

  The use of integrated circuits offered the possibility of providing a feed part of

  command of a very weak power. He was, however,

  with a great need for energy to actuate the switch by power stroke. This contradiction was overcome in the centralized remote control receiver by a switching energy accumulator, in particular a capacitor of large capacity which is maintained in the charged state by means of a charging channel from the power supply part. of the centralized remote control receiver, so that at relatively rare actuations and following at great distances of time of the switching member, the necessary switching energy

  can be provided in a short time.

  The last condition - rare actuation of the switching element, at long distances - is however still fulfilled, but there are centralized remote control receivers which are equipped with several switching members simultaneously receiving switching commands in certain case. To be able to execute these switching commands, it would be necessary to increase either the power of the power supply part or

  the capacity of the switching energy accumulator.

  However, these two solutions are not very economical and

disadvantageous.

  The invention aims to propose an agency

  circuitry for an electronic centralized remote control receiver, with which, while using a low-power power supply portion and a lowest energy-content switching energy storage battery possible , several organs of

  switching can be switched surely.

  This object is achieved according to the invention by means of an arrangement for monitoring the energy content of the switching energy accumulator, which, when the energy content becomes lower than a first one.

  limit value delays the control of the switching member

  until a second limit value of

  energy content, which is not lower.

  The switching arrangement according to the invention makes it possible, by means of the proposed monitoring of the energy content of the switching energy accumulator, to actuate several switching elements safely without the energy content of the energy accumulator being exceeded. switching or power of the power supply part must be increased accordingly. The invention is based on the discovery that it is not necessary to execute each switching command received at the instant, but that delays in time of a few milliseconds or even seconds can be tolerated, so that the control of the switching member when insufficient energy content of the switching energy accumulator can be delayed until it has sufficient energy content or, in other words, has been reloaded. The invention will be better understood and other purposes, features, details and advantages thereof

  will become clearer during the description

  explanatory text which will follow made with reference to the single appended figure given solely by way of example and

  illustrating a simplified diagram of a tele-

  centralized electronic control provided with a

remotely controlled switching.

  The centralized remote control receiver bearing the reference 1 in the figure is connected by its input terminals 2 and 3 to two conductors 4 and 5 of an AC network 6 to which are superimposed, in a manner known per se, control commands. remote control in form of

  sequences of AC pulses. As a result

  At input terminals 2 and 3, in addition to the AC mains voltage A,

  US signal superimposed on the network voltage. The conductor

  4 may be, for example, a phase conductor and

  the conductor 5 may be a zero potential conductor.

  The power supply of the tele-

  electronic central control 1 is provided with a power supply part 7 comprising, connected to the input terminals 2 and 3, a series connection of an impedance of

  protection 8, a capacitor in series 9 and a

  The two-wave rectifier Graetz rectifier is located with its AC terminals 11 and 12 in the aforementioned series connection, while at its DC terminals, namely at the negative potential 13 and at the positive potential 4, are connected a filter capacitor 15 and a limiter

  voltage 16, for example a Zener diode. The imperious

  protective dance 8 may be for example a resistor resistant to voltage strikes or an inductive ballast

resistant to tension.

  The capacitor 9 connected in series with the alternating current terminals 11 and 12 of the full-wave rectifier 10 produces, with respect to the mains voltage UN, the voltage drop required for the operation of the electronic arrangement of the centralized remote control receiver 1 For this operation, only a relatively low DC voltage of, for example, about 20 volts is required. The current consumption of the layout

  electronics is very modest, so that the part of the

  current supply 7 includes only a small amount of power

for example about 0.3 watts.

  From the circuit point 17, between the protective impedance 8 and the series capacitor 9, a conductor

  18 is brought, on the one hand, to the entrance 19 of a receiving part

  frequency selection system, and secondly

  to an RC member 27 formed by a resistor 28 and a capacitor

  The receiver portion 20, which includes, for example, active RC filters, as selection means for the remote control frequency, is connected, on the one hand, to a negative receiver rail 21 and, on the other hand, to a rail

  positive collector 22 and thus receives the power supply voltage.

  The output portion 23 of the receiving portion is connected by a conductor 24 to a first input 25 of the operating portion 26 of the remote control receiver.

  centralized 1. At a second entry 32 of the part of ex-

  26 is connected a conductor 31 which is deflected from a circuit point 30 located between the resistor 28 and

the capacitor 29.

  Through the RC member 27 is supplied to the second input 32 of the operating part 26 a network frequency signal by means of which is formed in the operating part 26 a series of pulses d clock connected to the network frequency for an electronic time base for the exploitation of received pulse sequences. The breaking frequency of the RC member is approximately 10 Hz, so that the network harmonics that are constantly present can be damped by

  ratio to the network frequency.

  The operating part 26 which is connected to the negative and positive collector rails 21 or 22 and thus receives from the current supply part 7 the necessary supply voltage, is embodied as a single-chip microcomputer. , programmed fixedly and advantageously by mask. Since electronic operating parts for centralized remote control receiver are known, it is not necessary here to give further details. Attention is only drawn to the fact that the operating part 26 includes, inter alia, an electronic accumulator and an offset register for recording and temporary accumulation.

  received pulse sequences. Each of these sequen-

  these stored pulses are compared to a sequence of pulses (remote control commands) associated with the corresponding centralized remote control receiver and, when a positive result of the comparison, a validation signal is provided by a first or a second output 33 or 34 of the operating part 26, as confirmation signal, for a switching member 35 to be remotely controlled

  and designated by 35. Each switching member 35 is

  According to the figure, a switch 35 'and according to whether an enable signal appears at the output 33 or 34, the switch 35' is switched on or off, with the result that a power consumer 36

  is connected to the network 6 or disconnected from it.

  For the operation of the switch 35 ', the signal

  appearing at exit 33 or 34 of the part of

  In FIG. 26, a switching transistor 37 is turned on so that either one of the two windings 39 or 40 of a relay 41 becomes current-conducting and thereby turns the switch 35 'on or off. Diodes

  42 and 43 are mounted parallel to the windings

  39 and 40 to protect transistors 37 and 38

  against inductive voltage strikes.

  Since the receiving part 20 and the operating part 26 of the remote control receiver

  centralized 1 have only a slight need for

  For example, the current supply portion 7 is dimensioned for economic reasons only to provide a relatively low power. For the actuation of the switching member 35, however, a greater power is required than the length of the power supply portion 7 dimensioned tightly could not provide in a sufficiently short period of time. For this

  Because of this, the switch member 35 has been associated with

  switching energy emulator 44 in the form of an accumulator capacitor with a sufficient capacitance of

for example 200 VF.

  The switching energy accumulator 44 is connected by a charging channel 45 provided with a resistor 46 to the current supplying portion 7. The resistor 46 may have a comparatively large ohmic value of, for example, 400 ohms . The switching energy accumulator 14 is then charged relatively slowly from the power supply portion, but after that it is constantly maintained in the charged state so that at any time it can provide on call the energy needed for a switching process. As long as the mains voltage UN is present at the terminals 2 and 3, the switching energy accumulator 44 is charged and maintains its charge due to the very low leakage current for a longer period of time when there is a lack of or a

  failure of the mains voltage.

  During a transient failure of the mains voltage the supply voltage for the receiving part and the operating part 29, supplied by the current supply part 7, decreases and becomes smaller, after a certain time, at the minimum voltage value that can ensure proper operation. It is then possible for outputs 33 and 34 to be provided with signals

  indeterminate, which relates to the fact that

  switching energy emulator 44 can still provide for a longer period of time the energy

  necessary for the operation of the switching

  35, may lead to erroneous switching of the switching member

35 and the switch 35 '.

  To avoid such unwanted switching processes, not triggered by remote control commands, an unloading path 47 a diode 48 is associated with the loading path 45, whose passage direction is directed towards the power supply portion 7. From that now the supply voltage of the power supply portion 7 becomes lower than the voltage at the accumulator of the switching energy 48, the value of the starting voltage of the diode 48, the part

  20 and the operating part 26 are supplied with food

  energy from the accumulator of the switching energy 44, via the diode 47, and the supply voltage of the receiving part 20 and the

  the operating part 26 decreases together and

  the voltage at switch member 35. As soon as during this decrease the voltage becomes lower than the minimum voltage value, an erroneous actuation of

  the switching member 35 could again occur.

  This is however prevented by the fact that the tension

  the switching element 35 is selected higher than

  than the lower limit value for the supply voltage

  of the operating part 26. Now a lowering of this limit value can not produce an erroneous actuation of the switching element since the voltage still has the accumulator

  switching energy 44 is too low for the excitation

relay 41.

  If in the figure, only one switching member

  35 is indicated as being provided with a switch 35 ',

  this should not be interpreted in a limiting way.

  On the contrary, the switching member 35 must be seen as representing several switching devices. Indeed, centralized remote control receivers are able to receive control commands for several organs

  35, one just after the other.

  It would now be obvious to size the switching energy accumulators 44 so that they can switch simultaneously or one after the other, all connected switching members 35, without having to be loaded meanwhile. According to the invention, however, there is another solution which is less expensive:

  this solution is based on the fact that when

  These switching commands must not be executed immediately, but delays in the order of a few

  seconds are trouble free and can be tolerated.

  The solution according to the invention consists in monitoring the

  voltage above the accumulator of the energy of

  44 and in the case of insufficient voltage for the execution of a switching command to delay the control or the attack of the respective switching member or corresponding control members 35 until the switching energy accumulator 44 is at

new loaded.

  In the figure, a conductor 51 with a zener diode 52 and a resistor 53 is arranged parallel to the switching energy accumulator 44 between the cathode 49 and the anode 50 thereof. A conductor 54 deviating from the positive collector rail 22 leads to the emitter terminal of a transistor 56 whose connection of

  collector is connected by a resistor 55 to the collector rail

  negative 21 and whose base is connected through

  a conductor resistor 57 comprising the Zener diode 52. The operating part 26 has a third input 58 to which is connected a conductor

  signal 59 deviating from the collector terminal of the transistor

tor 56.

  The Zener diode 52 serves as voltage reference to the switching energy accumulator 44. Indeed, as long as the voltage at the energy accumulator 44 is lower than the Zener voltage of the Zener diode 52, no current can flow from the positive collector rail 22 through the resistor 53 and the Zener diode 52, to the cathode 49 of

  the switching energy accumulator 44.

  It is also impossible that an emitter current

  base can flow from the positive collector rail 22 through the conductor 54 into the transistor 56 and through the resistor 57 in the Zener diode 52 to the cathode 49 of the switching energy accumulator 44. The switching transistor 56 thus blocks and the signal conductor 52 connected thereto adopts the potential of the negative collector rail 21 since it is connected thereto by the

resistance 55.

  The operating part 26 formed by a micro-

  computer can additionally to the functions already

  described enter entry 58 and treat it in its own

  gram. The microcomputer is programmed in such a way that it can memorize and not execute the orders present or pending for the relay 41 when the input 58 adopts the potential of the negative switching rail 21, that is to say when the voltage at the switching energy accumulator 44 becomes lower than the Zener voltage of the Zener diode 52. Only when the input adopts the potential of the positive collector rail 22 does the operating part 26 execute the memorized switching commands and / or

  orders that, if any, arrive.

  Entry 58 adopts the potential of the collector rail

  positive only when transistor 56 is conducting.

  This is however only the case when the Zener diode 52 is traversed by a Zener current, that is to say when the voltage on the switching energy accumulator 44 is greater than the Zener voltage. An emitter-base current can then flow from the transistor 56 through the resistor 57 and the Zener diode 52, which makes

  conducting the switching transistor 56.

Claims (8)

R E V E N D I C A T I 0 N S   1. Circuit arrangement for an electronic centralized remote control receiver, comprising an operating part for the operation of the received remote control signals, the switching elements controlled by the operating part as well as an energy storage accumulator. switching associated with the switching elements,   for the actuation thereof, characterized by an agency-   for the monitoring of the energy content of the battery   switching energy emulator (44), which when   downwardly of a limit value of the energy content delays the attack or control of the switching member until a second value is exceeded   limit of energy content, which is not lower.   2. Circuit arrangement according to claim 1, characterized in that the two limit values of the content in energy are equal.   3.- Arrangement of circuits according to the claim   2, characterized in that the arrangement for the over-   monitoring of the energy content comprises a measuring circuit for measuring the voltage at the switching energy accumulator (44) and an accumulator or an information memory for the transient storage of received remote control signals. 4.- Arrangement of circuits according to the   claim 3, characterized in that the part of operation   tation (26) is formed by a microcomputer and in that   the information accumulator is incorporated therein.   5. Circuit arrangement according to claim 3 or 4, characterized in that the measuring circuit comprises a reference element (52) for the voltage corresponding to the minimum energy of the accumulator.   switching energy (44) necessary for the operation of   of the switch member (35), and a switching element (56) for providing a signal to the operating portion (26) when the voltage corresponding to the minimum energy is passed downwards.   necessary and predetermined by the reference element.   Circuit arrangement according to Claim 5, in which the switching energy accumulator is formed by a capacitor, characterized in that the reference element (52) is formed by a diode   Zener connected in parallel with the capacitor (54). 7.- Arrangement of circuits according to   claim 6, characterized in that the communication element   tation (56) is formed by a transistor whose collector and emitter connections are respectively connected to the negative collector rail (21) and to the positive collector rail (22) of the circuit arrangement and whose base is connected to the conductor (51) including the diode Zener (52).   8.- Arrangement of circuits according to   claims 7 and 2, characterized in that since the   collector connection of the transistor (56), a conductor   signal (59) is fed to the input (58) of the micro-   computer forming the operating part (26) and in that the microcomputer is programmed in such a way that, when said input adopts the potential of the negative collector rail (21), it does not execute the switching commands for the switching members (35) but stores them and supplies them to the switching elements only when the potential of the positive collector rail (22) is present at this entry.