EP0552323B1 - Übertragungsverfahren für ein infrarot-fernsteuersystem - Google Patents

Übertragungsverfahren für ein infrarot-fernsteuersystem Download PDF

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Publication number
EP0552323B1
EP0552323B1 EP92910170A EP92910170A EP0552323B1 EP 0552323 B1 EP0552323 B1 EP 0552323B1 EP 92910170 A EP92910170 A EP 92910170A EP 92910170 A EP92910170 A EP 92910170A EP 0552323 B1 EP0552323 B1 EP 0552323B1
Authority
EP
European Patent Office
Prior art keywords
burst
key
transmission
repeat
transmitter
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP92910170A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0552323A1 (de
Inventor
Markus Thaler
Urs Jost
Stefan Sigrist
Peter Schmid
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Feller AG
Original Assignee
Feller AG
Schneider Electric GmbH
Schneider Electric SE
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from CH159791A external-priority patent/CH683054A5/de
Priority claimed from CH1599/91A external-priority patent/CH682022A5/de
Priority claimed from CH160091A external-priority patent/CH682027A5/de
Application filed by Feller AG, Schneider Electric GmbH, Schneider Electric SE filed Critical Feller AG
Publication of EP0552323A1 publication Critical patent/EP0552323A1/de
Application granted granted Critical
Publication of EP0552323B1 publication Critical patent/EP0552323B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • G—PHYSICS
    • G08—SIGNALLING
    • G08C—TRANSMISSION SYSTEMS FOR MEASURED VALUES, CONTROL OR SIMILAR SIGNALS
    • G08C19/00—Electric signal transmission systems
    • G08C19/16—Electric signal transmission systems in which transmission is by pulses
    • G08C19/28—Electric signal transmission systems in which transmission is by pulses using pulse code
    • G—PHYSICS
    • G08—SIGNALLING
    • G08C—TRANSMISSION SYSTEMS FOR MEASURED VALUES, CONTROL OR SIMILAR SIGNALS
    • G08C23/00—Non-electrical signal transmission systems, e.g. optical systems
    • G08C23/04—Non-electrical signal transmission systems, e.g. optical systems using light waves, e.g. infrared
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B47/00—Circuit arrangements for operating light sources in general, i.e. where the type of light source is not relevant
    • H05B47/10—Controlling the light source
    • H05B47/175—Controlling the light source by remote control
    • H05B47/19—Controlling the light source by remote control via wireless transmission
    • H05B47/195—Controlling the light source by remote control via wireless transmission the transmission using visible or infrared light

Definitions

  • the present invention relates to a transmission method for an infrared remote control system for the transmission of data sequences or telegrams by long and short key presses on a keyboard, between a transmitter and a receiver where the keyboard's different key presses are interpreted become.
  • Pseudo-continuous processes for example the sequential running through of a A series of discrete control values are conventionally used during a Key press, for example in the case of remote control by transmission of a Commands per step, or by transmitting a few commands, whereby the non - arrival of a command during a certain time as the end of the Key interpretation is interpreted, or by transferring the beginning and end controlled by pressing the button.
  • Data sequences i.e. Data which are represented by on or off states are so-called Transmission protocols used.
  • a station sends such Data sequences for example with the help of high-frequency waves, and a The receiving station evaluates the received data sequences, for which it uses the transmission protocol must know. This essentially defines the shape and the Content of the transferred data and makes it evaluable.
  • Such protocols are known in a variety and are used throughout Data transmission technology used. The large number of different protocols is mainly explained by the variety of uses, such as Data transmission of computer information or pure control information for apparatus. In particular, data security, integrity and transmission speed are decisive influencing factors, some of which hinder each other. The transmission medium must also be taken into account.
  • Such a transmission system is for example in the essay titled "PCM remote control chips detect transmission errors" by G. Torelli et al. (Electronic Engineering, Vol. 55, No. 676, April 1983, London, pages 41 to 47).
  • the basis of this known transmission system is fixed predetermined transmission frequency with the start pulse, addresses, Commands and stop pulses are transmitted. So the response times this system in a manner appropriate for the user Frame, the transmission frequency is correspondingly high choose. But this is also the one for the transmission necessary energy accordingly high.
  • the object of the invention is to find a transmission method that with a minimum number of commands a safe transmission of a long key press guaranteed, the end of the key press if possible should be recognized exactly, and that only requires a limited amount of energy.
  • this object is achieved in that from the time of pressing until the time of Letting go of a button repeats repeat signals R transmitted by the transmitter are provided the key is pressed for a minimum duration TW, the release of the key immediately generating a changeover signal S. and ends the transmission of the repeat signals R, that if the duration is short, the duration does not exceed TW a key only the switch signal (S) is sent is, this switching signal (S) immediately after when the button is released, and that is for transmission the repetition and switching signals R and S a burst pause modulation method is provided in the transmitter, the number of burst periods per burst packet Duration TB, and the burst distances TAO, TA1 ... are selected such that during the Breaks in spite of a power supply with low voltage and capacity the necessary energy and voltage amplitude is provided for the transmission.
  • a preferred embodiment of the invention is characterized in that a circuit is provided which the absence of a receiving device Repeat command is not interpreted as the end of the key press but only as an interruption.
  • Another preferred embodiment of the invention is characterized in that the first repeat signal after pressing the key longer than 400 milliseconds is transmitted and at intervals of at most 1 second is repeated until the button is released.
  • a special, preferred embodiment of the invention is characterized by this from the fact that a circuit is provided in the receiver, which after receiving a Repeat signals during at least the interval of the repeat signals one Number of discrete control signals generated.
  • the transmission method according to the invention can be used with the aid of a long button press on the transmitter, for example several seconds, reliably control pseudo-continuous processes. If the When the repeat signal is received, the process is not aborted, but only interrupted, and can continue when repeat signals are received again become. In this way, for example, in a light control device Dimming process, which is initiated and continued with a long button press is not due to the interruption of the transmission signal, for example temporary coverage of the transmitter-receiver connection broken off, but only interrupted. As soon as further repeat signals are received, the dimming process is continued in the original direction. When you let go The button is, for example, a changeover signal as a separate command for light control sent out.
  • This changeover signal marks the end of the straight ongoing process, for example the described dimming process.
  • the direction of the dimming function can be reversed, and the The next repeat signals received cause one to the original direction opposite dimming effect.
  • the preferred embodiments of the invention stipulate that 16 periods are used per burst packet, and the The interval between breaks is at least 10 times the burst packet length.
  • Another preferred embodiment provides that four different ones Information units with four different burst distances are used, one unit of information each to indicate the start or of the end the data sequence and to represent states 0 and 1.
  • the method according to the invention enables telegrams or Data sequences also reliably with transmitters with weak energy supply transfer. It is now possible that the transmitter is on during burst intervals Energy storage refreshes to the next burst package with enough To send out performance. The energy storage therefore no longer has to be this large be dimensioned to ensure uninterrupted transmission power.
  • Smaller sized energy stores are also in the dimensions and Weight noticeably less than larger energy storage devices, which is particularly useful for Handheld transmitters have reduced dimensions and lighter weight, making them one means greater ease of use.
  • the block diagram of the transmitter 10 is shown in FIG.
  • the transmitter 10 is for Example an infrared transmitter for controlling various electrical consumers, such as lighting fixtures, audio devices, window blinds.
  • the transmitter 10 consists of a keyboard 12, a first microprocessor or ASIC 14, a supply 16, an address preselector 18 and a transmission stage 20.
  • the supply 16 is switched on first control signal S1 of the keyboard 12 is activated and builds for the microprocessor or ASIC 14 and for driving the transmission diode D2 of the transmission stage 20 necessary supply voltage VS on.
  • the microprocessor or ASIC 14 starts up and takes over control of the feed 16 with a second control signal S2.
  • the output signal T5 of the keyboard 12 is read in by the microprocessor or ASIC 14, and indicates which key on the keyboard 12 was pressed.
  • the first control signal S1 and the second control signal S2 become a logical one OR circuit 19 assigned, which generates a third control signal S3, the Power 16 activated
  • the microprocessor or ASIC 14 then generates a fourth address control signal S4 with which the on the address selection device 18 with the aid of coding switches 22nd set device address A1, A2, A3, A4 .... by a logic circuit 21 is selected.
  • the addresses are represented with eight address bits, the Address space (see Fig. 2) logically in four banks (2 bits) with eight groups (3 bits) each Eight device addresses (3 bits) are divided.
  • the command transmission between the transmitter 10 and the receiver of a control unit is based on individual data sequences or telegrams (per telegram a command is transmitted), the information being digitally encoded.
  • the start bit SOT and the stop bit EOT are used for synchronization purposes, so that the beginning or end of a telegram is clearly recognized.
  • Exactly one of these device addresses is assigned to each key of the keyboard 12.
  • the device address specified in the output signal A5 of the logic circuit 21 determines the three least significant bits of the address field in the telegram ( Figure 3).
  • the group address G set with the coding switch 22 is read and determines the three higher-order address bits of the telegram.
  • the two most significant bits of the address field are filled with corresponding bank addresses.
  • the so generated The address and data field is supplemented with the other bits for data backup (CRC coding) and so the telegram (Fig. 3) formed.
  • the microprocessor 14 performs a burst-pause modulation (pulse position modulation) and subsequent carrier frequency modulation), and generates a transmission control signal TM for controlling a transmit amplifier 24, which is in series with the Transmitting diode D2 is switched.
  • This transmit amplifier 24 generates the transmit current IS through the diode D2, which corresponding to the current generated light signals in the infrared range. Because the feed do not provide enough energy to generate the transmit current IS a capacitor C1 is used to temporarily store the energy, which is dimensioned so that an entire telegram with at least the current strength IS can be sent out.
  • the microprocessor or ASIC 14 deactivates the Supply 16 by the second control signal S2, which means the power consumption in standby Operation can be reduced to a negligible level.
  • the circuit of the feed 16 is shown in FIG. 4.
  • the control circuit 32 provides this Reaches the desired voltage and sets the periodic switching on and off of transistor T1 and until the control voltage UR below decreases a predetermined value.
  • the periodic switching on and off is by generated an oscillator, the coil L is also used as a frequency-determining component can be. The oscillator is built in the control circuit 32.
  • the voltage converter 28 becomes operational set.
  • the voltage of the battery 26 is thus at the desired, higher voltage level VS transformed and preferably in capacitor C1 as an energy supply saved.
  • the information to be transmitted Telegram by means of the controlled transmitter amplifier 24 and the infrared diode D2 emitted and the capacitor C1 is thus partially emptied again possible, for example, to get by with a single 1.5 volt cell as an energy source.
  • the IR transmitter 10 can thus be made smaller than conventional or have more space for the transmitter electronics. Likewise, fewer need Batteries are replaced.
  • the telegram transmission method is shown schematically in FIGS. 5, 6.
  • transmitter 10 Only a limited power supply is available in transmitter 10 (Battery, 1.5 V, type AAA), so the transmission method must be selected in this way that the required range (approx. 20 m) and the service life (approx. 3 years under normal conditions of use) for the battery 26 can.
  • the telegram is transmitted using a burst pause modulation method.
  • the individual bits with a in the microprocessor 14 PPM method (pulse position modulation) coded and then with a Carrier frequency modulated.
  • the information carrier in this coding is the distance between two pulses (TAO, TA1 Fig. 5).
  • EOT EOT
  • O EOT
  • 1 SOT
  • SOT SOT
  • the individual pulses are modulated with a carrier frequency (447.5 KHz) in such a way that 16 periods of the carrier frequency are transmitted per pulse.
  • a pulse packet is called a burst with the burst length TB (32 us).
  • the modulated PPM signal (FIG. 6) is called a BPM signal (burst position modulation).
  • This coding and modulation method is very energy-saving, since energy is only consumed during the burst phases, and the intervals between the bursts (TAO, TB, TA1-TB, etc.) can be used to at least partially fill up a temporary energy store, especially if the burst distances are chosen much larger than the burst length. Stophit EOT 14 * TB Bit 0 19 * TB Bit 1 24 * TB Start bit SOT 29 * TB
  • a burst packet of duration TB has 16 periods, i.e. it will 16 short flashes of light emitted by the IR transmitter diode D2.
  • TA1 are selected so that the transmitter 10 has enough time, namely TAO - TB, the energy still missing to send the following burst packet to be processed if it does not always have sufficient energy reserves.
  • This allows transmitters with a weak energy source for transmission such infrared signals can be used by not being continuous send out a weak signal, but only a stronger signal for a limited time, send out the burst.
  • the dimensions and the Weight of the transmitter can be reduced because the energy source in particular Handheld transmitters are usually the heaviest and most inflexible in terms of dimensions Represents element.
  • the receiver 36 (FIG. 7) thus evaluates the burst distances between each received burst packets, recognizes the various telegrams and routes it passes on to an evaluation circuit 38 in accordance with the above coding.
  • the receiver 36 consists of a receiving diode D1, the infrared signals in current converts a preamplifier 40 to the received weak current signals preprocessed in such a way that a second microprocessor 42 the evaluation circuit 38 can be processed further.
  • the infrared light signal (light burst packet) with the receiving diode D1 converted into a current burst.
  • a bandpass 44 (Fig. 8) can be used which includes all interference that is not in range the carrier frequency, is able to dampen enough, but the bursts happen leaves.
  • Most interference frequencies in the infrared range are in the frequency range around 40 kHz (e.g. ballasts etc.)
  • the preamplifier 40 (Fig. 8) is designed so that the received signals first filtered and then amplified. After the reinforcement, the number of periods of the received signal are counted in a pulse counter 46 and if necessary Number of periods has been received, a single receive pulse S5 is applied forwarded to the second microprocessor or ASIC 42, which then the distances evaluates between these pulses.
  • the evaluation circuit 38 of the receiver 36 also contains two coding switches 48 for determining the device address A1 (3 least significant bits) and the group address G (3 high order bits).
  • the second microprocessor 42 reads these addresses upon receipt of a command telegram and compares the address field with the address set on the receiver 36. If the addresses match, the Command for further processing saved, otherwise discarded. At the same time the command telegram with the help of the data backup bits for faulty transmission examined. If the received telegram is found to be not in order the telegram is rejected.
  • the evaluation circuit 38 further contains a memory 50 (RAM / EEPROM) for storing states for the control of the control unit 52 So-called MODE inputs are communicated to the microprocessor 42 which type to be controlled by the control unit 52, with which he then the corresponding Program in the program memory 54 (ROM). It is possible with one single microprocessor 42 several different control signals S6 for different types Generate control units 52 (e.g. phase control, relays, etc.) depending on the MODE inputs.
  • RAM / EEPROM electrically erasable programmable read-only memory
  • MODE inputs are communicated to the microprocessor 42 which type to be controlled by the control unit 52, with which he then the corresponding Program in the program memory 54 (ROM). It is possible with one single microprocessor 42 several different control signals S6 for different types Generate control units 52 (e.g. phase control, relays, etc.) depending on the MODE inputs.
  • Figure 9 shows a diagram of the transmitter transmission from a long key press with infrared transmission of the telegrams using a restricted Power supply in the transmitter for controlling continuous and pseudo-continuous One button operations.
  • a key (for example T1) on the keyboard 12 of the transmitter 10 is at the time TD pressed and released at a later time TE, as in Fig. 9 in top diagram is shown.
  • TW is 400 ms
  • the key is pressed as interpreted "long", and from this point on repeat signals R (or HOLD commands) at a distance TR from the first (microprocessor 42) until the Button at time TE is released.
  • the Microprocessor 42 a switch signal S (or TOGGLE command) sent, and that Transmission of the repeat signals R ended.
  • releasing the Key a direction reversal for the control variable.
  • a long press of the button can Example used to do a pseudo-continuous operation control so that the output control signal S7 of the control unit 52 of the receiver 36 is changed by a small amount delta S in small time steps delta T, such as. dimming lights.
  • the distance must be TR of the repetition signals can be chosen sufficiently large (little energy consumption and thus increased battery life), on the other hand, the end of the Keystroke can be detected by the receiver 36 as precisely as possible, e.g. to be able to set the final value as precisely as possible when dimming.
  • the switch signal S is sent when the button is released and the receiver 36 interprets this as the end of the key press. So that the distance TR between the repetition commands can be selected large (800ms).
  • the time steps delta T for the control variable are in relation to the distance between the repeat commands R small (approx. 60 ms) and nevertheless the final value can be set precisely because when the button is released, the changeover signal is sent out immediately.
  • a switch signal S is from the microprocessor or ASIC 14 sent, the receiver 36 ON or. OFF switches depending on oh the current state OFF or Was one.
  • the HOLD function is used to create a logical connection between Establish transmitter 10 and receiver 36, and is used to transmit a long Key press (> 400 ms).
  • a short button press generates a switchover signal S or switchover telegram, on a long press generates repeat signals R or repeat telegrams, followed from a switchover telegram S when the button is released.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Selective Calling Equipment (AREA)
  • Optical Communication System (AREA)
  • Control Of El Displays (AREA)
  • Networks Using Active Elements (AREA)
  • Compounds Of Unknown Constitution (AREA)
  • Details Of Television Systems (AREA)
EP92910170A 1991-05-30 1992-05-27 Übertragungsverfahren für ein infrarot-fernsteuersystem Expired - Lifetime EP0552323B1 (de)

Applications Claiming Priority (10)

Application Number Priority Date Filing Date Title
CH159791A CH683054A5 (de) 1991-05-30 1991-05-30 Verfahren zur Uebertragung von Datensequenzen.
CH1599/91A CH682022A5 (en) 1991-05-30 1991-05-30 Transmission system for IR remote control unit
CH160091A CH682027A5 (en) 1991-05-30 1991-05-30 Transmission system for IR remote control unit
CH159791 1991-05-30
CH160091 1991-05-30
CH1600/91 1991-05-30
CH1599/91 1991-05-30
CH159991 1991-05-30
CH1597/91 1991-05-30
PCT/CH1992/000100 WO1992022048A1 (de) 1991-05-30 1992-05-27 Übertragungsverfahren für ein infrarot-fernsteuersystem

Publications (2)

Publication Number Publication Date
EP0552323A1 EP0552323A1 (de) 1993-07-28
EP0552323B1 true EP0552323B1 (de) 1999-09-08

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ID=27173109

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Application Number Title Priority Date Filing Date
EP92910170A Expired - Lifetime EP0552323B1 (de) 1991-05-30 1992-05-27 Übertragungsverfahren für ein infrarot-fernsteuersystem

Country Status (10)

Country Link
EP (1) EP0552323B1 (sv)
JP (1) JPH06500450A (sv)
AT (1) ATE184411T1 (sv)
CA (1) CA2088046A1 (sv)
DE (1) DE59209743D1 (sv)
ES (1) ES2137184T3 (sv)
FI (1) FI111668B (sv)
NO (1) NO307677B1 (sv)
PT (1) PT100553A (sv)
WO (1) WO1992022048A1 (sv)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4419019A1 (de) * 1994-05-31 1995-12-07 Pro Innovatio Forschungszentru Schalt- und Dimmervorrichtung und Verfahren zur Anwendung
SE9402870L (sv) * 1994-08-29 1996-03-01 Sesys Ab Metod, system och anordningar för fjärrstyrning av elektrisk utrustning
JP2006333348A (ja) * 2005-05-30 2006-12-07 Sony Corp リモートコントローラ、コマンド送信方法及びコマンド受信装置
DE102012007017A1 (de) * 2012-04-05 2013-10-10 Tridonic Gmbh & Co. Kg Verfahren zur relativen Ansteuerung einer Leuchte, Steuerung und Beleuchtungssystem
EP2910089B1 (en) 2012-10-18 2021-05-19 Signify Holding B.V. Apparatus and method for interpreting received control commands

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3109166A1 (de) * 1981-03-11 1983-01-13 Preh, Elektrofeinmechanische Werke, Jakob Preh, Nachf. Gmbh & Co, 8740 Bad Neustadt Mit einem mikrocomputer gesteuertes fernbedienungssystem

Also Published As

Publication number Publication date
DE59209743D1 (de) 1999-10-14
FI930356A0 (fi) 1993-01-28
ATE184411T1 (de) 1999-09-15
JPH06500450A (ja) 1994-01-13
EP0552323A1 (de) 1993-07-28
NO930329D0 (no) 1993-01-29
FI111668B (sv) 2003-08-29
PT100553A (pt) 1994-06-30
FI930356A (fi) 1993-01-28
CA2088046A1 (en) 1992-12-01
WO1992022048A1 (de) 1992-12-10
ES2137184T3 (es) 1999-12-16
NO307677B1 (no) 2000-05-08
NO930329L (no) 1993-03-29

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