FR2681492A1 - INSTALLATION COMPRISING TRANSMITTERS AND CODED RECEIVERS. - Google Patents

Abstract

An identification code is attributed to the receivers from a transmitter. This code is generated by means of a microcomputer (MCE) comprising a random code generator (GCO). This code is recopied into the other transmitters by setting up a temporary link (JK) between a transmitter operating as master and the other transmitters operating as slaves. The microcomputer may further include a channel generator (GCA). The receivers also include a microcomputer for detecting the transmitted frame, reading the code and channel values and comparing them with recorded values. The assembly makes it possible to simplify the code acquisition operation and simultaneously to control several receivers by one transmitter.

Description

The subject of the present invention is an installation comprising several

  transmitters and several receivers respectively capable of transmitting and receiving a frame containing data, in particular a code, and each comprising a microcomputer, a memory for storing an identification code of each transmitter, means for generating this identification code, means for transmitting the generated code between the microcomputers associated with the

  means of code generation and other microcalcula-

  at the end of its memorization in the corresponding memory.

  the microcomputers of the

  the code received to the stored code and activating a

  output interface when these codes are identical.

  US Pat. No. 4,529,980 discloses an installation of this type in which the code is generated randomly by the receiver and transmitted, by infrared or galvanic connection, to the transmitter which puts it in memory. This installation is intended primarily for control. of one or more receivers by a transmitter In the case where a transmitter must be able to control several receivers, the transmitter acquires the code of each of the receivers in a successive manner and stores each of these codes in

  a different memory box selected by micro-

  It is therefore not possible to control several receivers simultaneously, but the receivers must be ordered successively, which requires

  sending as many commands as there are receivers.

  In addition, if the installation has more than one

  for example, in the case of a plurality of users

  of one or more receivers commanding one or more

  several doors, it is necessary to repeat the opera-

  acquisition of the identification code by transmitters as many times as there are receivers and

  number of issuers, the number of transactions being

  equal to the product of the number of

number of issuers.

  The present invention aims to simplify the code acquisition operation and to enable the control

  simultaneous reception of several receivers by a transmitter.

  For this purpose, the installation according to the invention is

  characterized in that the code-generating means

  are located in the transmitters, that the micro-

  transmitter calculator comprises, for this purpose, a program and subprograms for activating the random code generating means, for storing this code in the memory, arranging the stored code in the frame and initiating transmission of the frame, which the

  Receiver microcomputer has a subproduct

  gram to receive the frame and memorize the nu-

  code mole of the frame, each transmitter comprises means for establishing a link between its microcomputer and the microcomputer of another transmitter and the microcomputer of each transmitter includes a transmission routine on its link output with the microcomputer of another transmitter, a frame loaded with the code contained in its memory and a reception sub-program in said frame and of

storing the frame code.

  The code is generated by one transmitter and can be sent to multiple receivers simultaneously, which will allow

  subsequently, to control these receivers simultaneously.

  The transmission of the code generated in a transmitter to

  other transmitters, allows copying quickly

  generated in all transmitters In practice, identification codes will be generated in a transmitter

  determined, which will operate as a master transmitter, and

  copied to the other transmitters, which will operate as slave transmitters The copying operation must therefore be repeated a number of times equal to the number of transmitters minus 1 In the case of a plurality of transmitters controlling the same set of receivers , simultaneously or individually, the total number of operations for

  copying of codes in transmitters and learning

  weaving of these codes to the receivers will therefore be equal to

  sum of the number of issuers minus 1 and the number of

  This represents a great simplification

  the installation in accordance with the prior art

  laughing. In addition, it is easier to copy from transmitter to transmitter, because it can be performed at any location, especially at a location different from the location of the receiver which is generally fixed, such as

  this is the case of a door control or the like.

  The installation can work by means of several channels A specific channel can be assigned to each transmitter and to one or more receivers The transmitters can be multichannel In this case they include

  a channel generator controlled by a selection selector

  Each receiver compares the code and channel value contained in the received signal with the code and the

  channel value contained in its memory All the re-

  receivers with the same channel value and the same code are activated simultaneously A difference between

  channel values make it possible to individualise

  the control of several receivers belonging to

  to the same user A difference in the number of

  code allows individualizing the receivers

  belonging to different users Such an

  The installation offers a great flexibility of use.

  One embodiment will be described, by way of example, by means of the appended drawing in which: FIG. 1 schematically represents a set of transmitters and receivers; Figure 2 shows the block diagram of a transmitter; FIG. 3 represents the block diagram of a receiver associated with an apparatus to be controlled; FIG. 4 represents the flow chart of the microcomputer software of an emitter; FIGS. 5 to 7 show the flowcharts of the code receiving, code copying and frame transmitting routines of the program shown in FIG. 4; and Figure 8 represents the program flow chart

microcomputer of a receiver.

  The installation consists of a number of transmitters El, E 2, E 3, En and a number

of receptors R1, R2, Rm.

  Each transmitter is equipped with a transmitting antenna and

  receiver of a receiving antenna for transmitting

  reception of a high-frequency signal Each receiver is associated with a device

or device to order.

  Each transmitter, as shown in Figure 2,

  takes an MPE microcomputer powered by a battery B also feeding a high frequency transmitter

EHF connected to an AE antenna.

  The MCE microcomputer has several outputs that

  are respectively connected to a 7-segment AFF display

  five contacts Cl, C 2, C 3, C 4, C 5 and a di-

  of luminescent (LED) LE Contacts Cl, C 2 and C 5

  are individually operable to

  corresponding part of the microcomputer to the mass

  contacts C 3 and C 4 constitute a jack intended for

  born to receive a JK jack connected at both ends

  line L (figure 1) In the absence of a jack, the

  C 3 tact is closed and connects the corresponding output of the microcomputer to the mass The contact C 4 is intended to connect the corresponding output of the microcomputer to

  line L when the jack JK is plugged.

  The MCE microcomputer includes a code generator

  randomized GCO, a GCA channel generator and a

EEPROM.

  The ECM microcomputer comprises a program and subroutines for activating the GCO code generator for storing the code obtained in the EEPROM, arranging the stored code in the frame and triggering

  the emission of the frame This program and these subproducts

  grams are shown in Figures 4 to 7.

  The random code generator GCO and the generator of

  the issuer's GCA channel are constituted by

  The first is incremented by means of

  contact Cl and the second by means of contact C 5.

  Opening contact C 3 activates the subroutine

  code copy "(FIGS. 4 and 6) when the contact C 2 is closed and activates the routine" reception of

  code "(FIGS. 4 and 5) when the contact C 2 is

green.

  Closing the contact C 3 provides access to the sub-

  program "channel value generation" (Figure 4).

  Closing the contact C 2, while the contact C 3 is

  closed and the contact C 5 is open, activates the sub-pro-

  gram "frame emission" (Figures 4 and 7).

  The EEPROM memory of each transmitter contains memory cells to receive the random code generated by the

GCO generator.

  The AFF display shows the channel value read from the

GCA channel generator.

  The EHF transmitter is intended to transmit the frame from the

  subroutine "frame transmission".

  One of the receivers is shown in FIG. 3 This receiver comprises a microcontroller MCR powered by

  network N via a feed circuit

  AL, an RHF receiver connected to a receiving antenna.

  with the AR circuit, the AL feed circuit and the microcal-

  MCR, an IO interface and a light emitting diode.

  LED (LR) connected to an output of the microcomputer. The IO interface is connected to the output S of the microcalcu-

  The IO interface is also connected to a control device K, for example a garage door.

  Another output of the microcomputer MCR is connected to a contact C 6 whose actuation connects this output to ground The microcomputer MCR is also equipped

  memory and EEPROM The MCR microcomputer

  takes a program shown in Figure 8 and includes

  a sub-program of learning and a sub-program

  order execution gram The training subroutine

  weaving ensures the reception of the frame transmitted by the transmitters and the storage of the frame code number

  in the EEPROM memory of the receiver.

  In each receiver, the closing of the contact C 6 activates

  the learning sub-program (Figure 8)

  that contact C 6 is open, the execution sub-program

Order execution is active.

  In the exemplary embodiment considered, the IO interface

  has a four-cycle cycle breaker and the receiver

  RHF is of the "four-cycle" type.

  At the end of the command execution subroutine, output of the output S activates the input of the interrupter which, successively, produces commands of SENS 1, OFF, SENS 2, OFF,

  The operation of the installation will now be described.

  tion. To perform the coding of the installation, we choose

  transmitter as master transmitter.

  tact Ci of this transmitter one generates a first code which

  is stored in the EEPROM memory of this master transmitter

  By means of the contact C 5 and the LCD display

  chooses a channel that is also stored in the

EEPROM.

  This code and this channel value are then copied

  other transmitters by means of the link

  For this purpose, one of the JK jacks is plugged into the C 3 / C 4 jack of the master transmitter and the other jack into the jack of the slave transmitter in which it is desired to copy the code On operates

  then the contact C 2 of the master transmitter whose

  meture activates the code copy subroutine which results in the transmission, by the output corresponding to the contact C 4, of a frame comprising the code and the channel number contained in the EEPROM memory of the transmitter

  The absence of action on the C 2 contact of the transmitter

  slave has the effect of keeping the sub-

  code receiving program of this slave transmitter, which results in the recording, in the EEPROM memory of this slave transmitter, of the code and the channel number contained in the frame arriving on the contact C 4 by the

galvanic connection.

  The above operation is repeated for each of the

slaves.

  The encoding of the receivers is carried out from one

  any of the transmitters. For this purpose, the link

  between transmitters is suppressed, which has the effect of closing the contact C 3 The contact C 6 of the or

  receptors that should react to a particular channel.

  is closed With the contact C 5 and the display

  AFF is selected the channel corresponding to these receivers The frame transmission subroutine is

  then activated by closing the contact C 2

  contact C 6 has the effect of activating the sub-

  code learning program that leads to the recording of

  in the EEPROM memory of the receiver,

code and channel value.

  The above operation is repeated as many times as there are receivers In the case where it is desired a simultaneous control of several receivers, the same

  channel value is used in the learning phase

  wise for all these receivers. If we denote by NR the number of receivers and NE the

  number of issuers, the total number of

  and recopy is equal to NR + NE 1.

  When their contact C 6 is open, the receivers are ready to execute an order received from a transmitter. The open state of contact C 6 keeps active the order execution routine, which, on detection of a frame , compares the code and the channel value contained in this frame with the code and the value contained in its memory and, in case of identity, activates the output S of the microcomputer MCR All the receivers which have the same channel value and the same code are enabled

simultaneously.

  A difference between the channel values allows for

  preferentially dividualize the order of several

  receivers belonging to the same user.

  A difference in the code number allows individual

  dually the receivers belonging to different users.

  The ECM microcomputer program of an issuer

  shown in Figure 4, is as follows: The microcomputer is woken up by an action

  on one of the contacts Cl, C 2 or C 3.

  The polling instruction 2 scrutinizes the state of the con-

Cl, C 2 and C 5 tacts.

  If the test instruction 3 tests that the contact Cl is closed, it activates the code generation routine. Instruction 11 is a command to copy the code stored in EEPROM in the code generator counter. This instruction calls instruction 12

  incrementing the counter of the code generator.

  This incrementation is repeated as long as the

  contact Cl is closed, this state being tested by the

  test truction 13 When Cl is open again, the instruction 14 is called which ensures the copying of the state of the counter in the code box of the memory

EEPROM.

  If 3 tests that Cl is open the test instruction 4

  then tests the contact C 3 If C 3 is closed, the sub-contact

  channel value generation program is then activated The test instruction 5 tests the contact C 5 If C 5 is closed the channel counter of the generator GCA is

  then incremented by instruction 8 which calls for

  9 incrementing the AFF display The

  truction 9 is followed by a test instruction 36 which tests whether the contact 5 is open If so, the

  subroutine loops back on the test instruction 5.

  If, on the other hand, 36 tests that the contact 5 is closed, the test 36 is repeated as long as the contact 5 is closed. If 5 tests that C 5 is open, it calls the test instruction 6 which tests the contact C 2 If C 2 is closed, the frame transmission routine 10 is activated If C 2

  is open, the program goes to sleep 7.

  If 4 tests that C 3 is open, that is to say that the jack JK of the galvanic connection is in file, it calls the test 15 which tests the contact C 2 If C 2 is closed on

  subroutine 16 of code copy is activated.

  If it is tested that the contact C 2 is open, the subprotocol

  Code receiving gram 17 is enabled.

  The code receiving routine 17, shown in FIG. 5, comprises the acquisition instruction 18 of

  the frame on output 4 of the microcomputer, which

  shifts the instruction 19 to store the code in the EEPROM, which in turn calls the instruction 20

  flashing of the code acquisition LED The

  truction 20 is followed by a test instruction 37 which tests whether the contact C 3 is closed. If this is the case, the

  program is put to sleep If, on the other hand, the

  C 3 is open, the program loops back to the

test truction 15.

  The code copying routine 16, shown in FIG. 6, comprises the instruction 21 for reading the code in the EEPROM, which calls the instruction

  22 of frame constitution with the code read in the

  EEPROM, which in turn calls for instruction 23

  sending the frame to the output 4 of the microcomputer.

  Instruction 23 is followed by the test instruction 37

described above.

  The frame transmission routine 10, shown in FIG. 7, comprises the instruction 24 for reading the code in the EEPROM memory and the channel value.

  which calls instruction 25 for the constitution of a

  me with code and channel value, which in turn calls

  the frame transmission instruction 26 by the transmitter EHF.

  The microcomputer program of a receiver, represented

  shown in Figure 8, is as follows:

  Instruction 27 scans the state of the RHF receiver.

  Instruction 28 is a detection test instruction

  if test 28 tests the reception of a frame, it calls the instruction 29 which is a test instruction of the state of contact C 6 If 29 tests that C 6 is closed, the training routine is activated This subprogram includes a read instruction of

  code and value of channel 30, which calls for an instruc-

  code memorization and channel value

  the EEPROM memory 31, which in turn activates an

  truction flashing the acquisition LED 32 The subroutine then loops back on the instruction of

test 28.

  If 29 tests that C 6 is open, the subprogram of

  This routine starts with the call of an instruction 33 which is a code and channel value read command, which invokes an instruction 34 which tests the correspondence between the code and the value. channel received by the frame and the code and channel value stored in the memory

EEPROM.

  If 34 tests that the received code and channel value

  corresponding to the code and the memory channel value

  instruction 35, which is a training instruction

  the S output of the microcomputer, is called and the order is executed The program loops back

on instruction 28.

  If 34 tests that the code and channel values are not correct

  do not respond to the stored values, the program loops back to instruction 28 without the command being executed.

  The installation could include a single receiver.

  This is the case, for example, of a garage door used

by several users.

  In a simplified version, the channel value generator can be replaced by a register containing a single fixed channel value determined in the factory.

  case, the programs and sub-programs of the microcalcula-

  transmitters are planned to dispose of this

  in the frame emitted In Figure 2, the generator

  GCA, the C 5 contact and the LCD display are deleted.

  According to a variant embodiment of the receiver, instead

  to use a four-cycle cycle breaker, it is

  reads three outputs of the microcomputer MCR, outputs having the meaning respectively SENS 1, SENS 2, OFF The transmitter could be equipped with

  three C 2 type contacts with, for each of these

  tacts, an order type code added to the transmitted frame

by the issuer.

  Other alternative embodiments are possible.

  In particular, the code generator does not need-

  The same is true of the channel value generator The AFF display and the LEDs could be located outside the transmitter and the receiver. The four-cycle switch

  time could be integrated into the microcomputer of the

  receiver. Each transmitter could have three SENS contacts

  1, SENS 2, STOP and the codes corresponding to these

  could be generated by the microcomputer.

  The link between the transmitters for copying the code could be a wireless link, HF or IR or

  still a fiber optic link.

Claims (7)

CLAIMS.   1 Installation comprising several transmitters (El,) and at least one receiver (Ri,) respectively capable of transmitting and receiving a frame containing   data, in particular a code, and including each   each a microcomputer (MCE, MCR), a memory   (EEPROM) for storing an identification code   of the transmitter, means (GCO) for randomly generating this identification code, means   (EHF) transmission of the code generated between the micro-   computers associated with the code-generating means and the other microcomputers at the end of its storage in the corresponding memory, the microcomputers of the receivers comparing the received code with the stored code and activating an output interface (IO) when these codes are identical, characterized in that that the random code generating means (GCO) are located in the transmitters, that the microcomputer (MCE) of the transmitters comprises, for this purpose, a program and subroutines for activating the code generator   random, to memorize this code in the memory,   placing the stored code in the frame and triggering the transmission of the frame, the microcomputer (MCR) of the receiver includes a subprogram for acquiring the frame and storing the code contained in the frame,   each transmitter comprises means (C 3 / C 4, JK)   both to establish a connection between its microcomputer and the microcomputer of another transmitter, and the microcomputer (MCE) of each transmitter has a transmission routine, on its output link with the microcomputer of another transmitter , a frame loaded with the code contained in its memory and a subroutine for receiving said frame and storing the frame code.   2 Installation according to claim 1, characterized in that one of the transmitters is a master transmitter and   the other transmitters are slave transmitters.   3 Installation according to one of claims 1 or 2,   characterized in that the means for establishing   a link between the microcomputers of two transmitters   are constituted by a galvanic connection.   4 Installation according to claim 3, characterized in that the galvanic connection consists of a cable provided with jacks (JK) and that the microcomputers of the transmitters comprise two outputs connected to contacts (C 3, C 4) constituting a connection. jack, one   of these contacts (C 3) allowing two states of the microcal-   culator which includes a program subprogram, on   the galvanic connection, a frame loaded with code   stored in the transmitter memory when the contact (C 3) is in a first state and a subroutine for receiving the frame and storing the code of   frame, when the contact (C 3) is in the second state.   Installation according to one of claims 1 to 4,   comprising a plurality of receivers, characterized in that it comprises several channels and that the transmitters comprise a channel value generator (GCA) and a channel selector (C 5).   Installation according to one of Claims 1 to 4,   comprising a plurality of receivers, characterized in that   that it has several channels and that each   transmitter transmits on a specific channel.   7 Installation according to claim 5, characterized in that the channel selector (C 5) consists of a contact connected to an output of the microcomputer of   transmitter and allowing, at each closure,   Means the channel value of a unit, the programs and subroutines of the microcomputers being provided for   have, in the frame transmitted by the transmitter, the last   the value contained in the channel generator, in   plus the identification code, and that the micro-   Receivers Calculators (RCMs) include a sub-   program to acquire the frame and memorize the code   identification and the channel value.   8 Installation according to claim 6, characterized   in that the microcomputer (MCE) of the transmitters   carries a register containing a determined channel value   and the programs and subprogrammes of the   crocometers of transmitters are planned to have   this channel value in the transmitted frame.