DE19634487A1 - Transmitter unit with receiver unit and transceiver for radio frequency signal - Google Patents

Transmitter unit with receiver unit and transceiver for radio frequency signal

Info

Publication number
DE19634487A1
DE19634487A1 DE1996134487 DE19634487A DE19634487A1 DE 19634487 A1 DE19634487 A1 DE 19634487A1 DE 1996134487 DE1996134487 DE 1996134487 DE 19634487 A DE19634487 A DE 19634487A DE 19634487 A1 DE19634487 A1 DE 19634487A1
Authority
DE
Germany
Prior art keywords
signal
hf
ir
frequency signal
s2
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.)
Withdrawn
Application number
DE1996134487
Other languages
German (de)
Inventor
Oliver Giessl
Rainer Grimm
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.)
Siemens AG
Original Assignee
Siemens AG
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
Application filed by Siemens AG filed Critical Siemens AG
Priority to DE1996134487 priority Critical patent/DE19634487A1/en
Publication of DE19634487A1 publication Critical patent/DE19634487A1/en
Withdrawn legal-status Critical Current

Links

Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04BTRANSMISSION
    • H04B10/00Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
    • H04B10/11Arrangements specific to free-space transmission, i.e. transmission through air or vacuum
    • GPHYSICS
    • G08SIGNALLING
    • G08CTRANSMISSION SYSTEMS FOR MEASURED VALUES, CONTROL OR SIMILAR SIGNALS
    • G08C17/00Arrangements for transmitting signals characterised by the use of a wireless electrical link
    • GPHYSICS
    • G08SIGNALLING
    • G08CTRANSMISSION SYSTEMS FOR MEASURED VALUES, CONTROL OR SIMILAR SIGNALS
    • G08C2201/00Transmission systems of control signals via wireless link
    • G08C2201/60Security, fault tolerance
    • G08C2201/63Redundant transmissions

Abstract

The transmitter unit (1) contains a first light signal transmitter (2) and a second high frequency or HF signal transmitter (3) which are activated to transmit by an activation device (12). The light signal (IR) and the HF signal (HF) are encoded with the same code. The transmitter unit transmits the HF and light signals simultaneously, pref. with a time offset. The signals are transmitted with a code whereby their time offset within a time window corresp. to the information associated with the position. The corresp. receivers (4,5) in a receiver unit are connected to an evaluation unit.

Description

The invention relates to a transmission unit for a Hochfre quenzsignal and a light signal according to the preamble of the An Proverb 1, a receiving unit for a high frequency signal and for a light signal according to the preamble of claim 4 and a transmitting and receiving unit for a high frequency si gnal and a light signal according to the preamble of the claim 8th.

Transmitting and receiving units for a high-frequency signal and for a light signal, for example, in the range of Automotive engineering used a remote-controlled Zen control or immobilizer.

DE 43 00 600 A1 describes a remote-controlled fuse direction known for a motor vehicle, the vehicle independent first transmitter for a radio frequency signal, one vehicle-independent second transmitter for a light signal, egg NEN first receiver for the radio frequency signal and one has second receiver for the light signal, the he most receiver with a first control device and second receiver with a second control device in Ver is binding and the first control device with security tel for locking and unlocking motor vehicle locks Stuff and the second control device a theft-proof control device.

The radio frequency signal is modulated with a code and that The light signal is basically unmodulated, but can also to improve theft protection with a code modu be. The first and the second control device stale after receiving a signal from the assigned receiver  the means of security or theft protection set up in an appropriate position.

The object of the invention is to process the high-frequency signals and light signals emitted by a transmitter simplify gnale. The object of the invention is achieved by the features of claims 1, 4 and 8 solved.

It is particularly advantageous for coding the light signal and the radio frequency signal to use the same code since the decoding of the light signal and the Hochfre quenzsignals can be done according to the same code, so that only a single code can be provided in the evaluation unit got to.

Advantageous further developments and improvements of the invention are specified in the subclaims.

The invention is explained in more detail below with reference to the figures purifies: show it

Fig. 1 A transmitting and receiving unit,

Fig. 2 shows a message structure of the first and the second transmit signal,

Fig. 3 shows a code for the light signal and for the Hochfre frequency signal, and

Fig. 4 shows a code for the first and the second signal.

Fig. 1 shows a transmission unit 1 having a first transmitter 2 and a second transmitter 3. The first transmitter 2 is designed to emit light signals, in particular infrared light. The second transmitter 3 is for emitting high frequency signals, in particular radio frequency signals, out. The transmission unit 1 has an actuating means 12 for the first transmitter 2 and the second transmitter 3 , with which the first transmitter 2 and the second transmitter 3 are activated for transmission. In addition, in the transmission unit 1, a voltage supply is for the first and the second transmitter 2,3 vorgese hen. A preferred embodiment of the transmitter unit 1 is to accommodate the transmitter unit 1 in a handle of a vehicle key.

Remains 1, a first receiver 4, which is the first transmitter 2 det ausgebil for receiving light signals IR, and a second receiver 5 are shown in Fig. Disposed of to Emp captured by high-frequency signals HF, in particular Funkfre quenzsignalen formed of the second transmitter 3 . In Fig. 1, preferably a plurality of first receivers 4 and a plurality of second receivers 5 are arranged. Each first receiver 4 and every second receiver 5 is connected via a first signal line 6 or a second signal line 7 to an evaluation unit 8 , which preferably also has the functions of a control unit and thus preferably an evaluation and control unit 8 , which with An Control lines 9 is provided which are guided to locking and unlocking means 10 and / or to an immobilizer 11 .

In Fig. 1, the light signals IR, which are emitted by the first transmitter 2 , in the form of dashed arrows represents Darge, since light signals propagate linearly and receiving a light signal by the first receiver 4 is not possible if there is between the first Sender 2 and the first receiver 4 is a larger object. The high-frequency signals HF emitted by the second transmitter 3 propagate in the form of spherical waves that are scattered and reflected on objects, so that reception by the second receiver 5 is also possible if there is between the second transmitter 3 and the second receiver 5 an object is found.

The first receiver 4 and the second receiver 5 convert the received light signal or the received high-frequency signal into a corresponding, preferably electrical or optical first or second signal S1, S2 and feed them to the evaluation and control unit 8 . The evaluation and control unit 8 evaluates the first and second signals supplied separately from the first signal lines 6 and the second signal lines 7 according to the same code and accordingly controls the information obtained from the evaluation of the first or second signals via the control lines 9 corresponding actuators, in particular locking and unlocking means 10 and anti-theft devices 11 . Here, for. B. on the locking and unlocking means 10, the door locks of the motor vehicle locked or opened or the immobilizer activated or deactivated.

The code by which the first and second signals are encoded are, corresponds to the code according to which the light and high frequency are encoded signal.

Fig. 2 shows the telegram structure of the high frequency signal HF and the light signal IR. In Fig. 2a the time sequence of the telegrams is divided into the time ranges B, C, and D.

In the first time period B, this is for a period of 80 ms High-frequency signal and the light signal preferably the same transferred early. Then takes place in the second time range C a transmission pause of 10 ms. Then in the third Time range D in a period of 80 ms both the high frequency frequency signal and the light signal are preferably transmitted.

Fig. 2b shows a precise structure of the second time range B, in which data on the radio frequency signal and the light signal in the form of two Vorbytes and eight following data bytes are transmitted.

Fig. 2c shows the structure of the first and second bytes before. The first byte is divided into four time periods, each lasting 2 ms and in which two data bits are transmitted in coded form. The second byte is also divided into four time periods, with two data bits being transmitted coded in each time period.

Fig. 2d shows the transmission principle with which the eight data bits are transmitted one byte as four dibits. A first and a second time window TZH, TZI of 2 ms is provided for each double bit, in which the light signal IR and the high-frequency signal HF are transmitted. Both the light signal and the high-frequency signal each contain the information about the double bit in coded form due to the position in time in the first and in the second time window TZI, TZH. In a development of the invention, during a first or a second time window TZI, TZH, the information via a data bit or more than two data bits can also be transmitted by the light signal or high-frequency signal.

The second Vorbyte and the eight data bytes are constructed in accordance with the first Vorbyte and are transmitted according to the same transmission principle as shown in Fig. 2d. The eight data bytes contain the information and commands that are provided to control the actuators, in particular the locking and unlocking means and the anti-theft device.

The coding of a double bit takes place via the corresponding time transmission, in particular the start of the transmission, the light signal IR and the high-frequency signal HF within the first and the second time window TZI, TZH of 2 ms, which are available for the transmission of the two data bits , as shown in Fig. 3.

Fig. 3 shows on the left side the temporal code proto coll to emit the light and the high frequency signal and on the right side the double bit corresponding to the emitted light IR and high frequency signal HF. The light signal specifies by its temporal position within the first time window TZI or the radio frequency signal by its temporal position within the second time window TZH ne information, preferably two data bits, which is shown in the table INFO. The transmission times for the light and high-frequency signal can be selected to be of different lengths or of identical lengths.

Fig. 3 shows as a possible code a quattro phase code with which four data bits transmitted in four times within a first or second time window TZI, TZH for the light IR and the high-frequency signal HF are transmitted coded. The light signal of a first time window transmits the information over two data bits and the radio frequency signal of a second time window also transmits the information over two data bits. In this embodiment, the light signal and the high frequency signal are two independent transmission paths that are coded according to the same code.

In general, the first and the second time window TZH, TZI are arranged simultaneously during transmission, so that the light signal IR and the high-frequency signal HF are transmitted simultaneously for the same information. Preferably, however, the first and second time windows TZI, TZH can be shifted in time from one another for the light IR and the high-frequency signal HF, as shown in FIG. 3, so that, for example, the first time window TZI for the light signal at a predeterminable time interval TV of, for example, 750 ms before the second time window TZH for the high-frequency signal is arranged. The time offset of the first time window TZI with respect to the second time window TZH is preferably used to protect the battery of the transmitter unit.

For the sake of a better overview, a quattro phase code is shown in FIG. 3, in which the first and the second time window TZI, TZH are shifted in time from one another.

Fig. 3a shows timed transmission times of the light signal IR and the high-frequency signal HF, the two bits with the value of the first data bit of 0 and the value of the second data bit of 0 encodes transmitted. In this case, the light signal IR is transmitted for a period of 144 microseconds at the beginning of the time window. The high-frequency signal HF is then transmitted for a period of 300 microseconds from the time t = 750 microseconds.

FIG. 3b shows the temporal positions of the light signal IR and the high-frequency signal HF, respectively corresponding to two data bits with the value 0 for the first data and the value 1 for the second data bit. For this purpose, the light signal IR is transmitted for a period of 144 microseconds in the transmission time TZ from the time t = 250 microseconds. The high-frequency signal HF is then transmitted for a period of 300 μs from the point in time 1000 μs.

Fig. 3c shows the temporal positions of the light and high frequency signal IR, HF, each representing two data bits with the value I for the first data bit and the value 2 for the second data bit. For the coding of the two data bits, the light signal IR is transmitted for a period of 144 microseconds from the point in time 500 microseconds. The high-frequency signal HF is then transmitted for a period of 300 μs from the point in time of 1250 μs.

FIG. 3d shows the temporal positions of the light signal and high-frequency signal, which represent two data bits with the value 1 for the first data bit and the value 1 for the second data bit. For this purpose, the light signal is transmitted for a period of 144 µs from the time of 750 µs and then the high-frequency signal is transmitted for a period of 300 µs from the time of 1500 µs.

The length of the first and the second time window TZI, TZH is preferably 2 ms in this exemplary embodiment however adjusted in length according to the application the.

The distance between the end of the light signal IR and the Be The start of the high-frequency signal HF represents a time delay td represents preferably a charging time of a condenser tors is adapted and in this embodiment be 606 microseconds wearing.

The radio frequency transmission time tHF, during which the radio frequency signal is transmitted, is in this embodiment 300 µs. The light transmission time tIR during which the light signal is transmitted in this embodiment is 144 microseconds.

During the light transmission time tIR, a light signal in the light fre frequency range preferably with a constant frequency sent out. During the radio frequency transmission time tHF is on High frequency signal preferably in the radio frequency range of a few kHz to a few MHz with preferably constant Fre transference.

The coding method shown in FIG. 3 corresponds to a quattro phase code method with which a simultaneous transmission of light and high-frequency signal is possible, which leads to a short transmission time, through which electricity is saved when operating the transmission unit 1 .

The transmission protocol shown in FIG. 3 is also fulfilled by the first and second signals S1, S2, since the light signal and the high-frequency signal are implemented accordingly.

FIG. 4 shows the code for the first and second signals S1, S2, which corresponds to the code for the light signal and the high-frequency signal of FIG. 3. The first signal S1 is supplied to the evaluation and control unit 8 in accordance with the light signal IR in the first time window TZI. The second signal S2 is accordingly supplied to the high-frequency signal HF in the second time window TZH of the evaluation and control unit 8 . The duration of a first and second signal S1, S2 corresponds preferably to the duration of the light or high-frequency signal IR, HF. The first and second signals S1, S2 preferably differ in the voltage level.

The first and second signals S1, S2 are thus encoded in accordance with the code of the light or high-frequency signal, which is stored in the evaluation and control unit 8 , and the evaluation and control unit 8 can accordingly in the first and second signals Decode values of the first and second data bits.

By using a single code, in this exemplary embodiment of the quattro phase code for the light and high-frequency signal, it is sufficient if a single code is stored with which the evaluation and control unit 8 decodes the first and the second signal S1, S2 performs, whereby a simple structure and low costs can be achieved.

The invention is not based on the Quattro phase code limits, it can also any other suitable code for over carrying information about a light and radio frequency si gnal be applied.

Claims (9)

1. Transmitter unit ( 1 ) with a second transmitter ( 3 ) for a high frequency signal (HF), with a first transmitter ( 2 ) for a light signal (IR), the second and the first transmitter ( 3,2 ) after actuation an actuating means ( 12 ) is a high-frequency signal (HF) or a light signal (IR), characterized in that
  • - That the light signal (IR) and the radio frequency signal (HF) are coded according to the same code.
2. Transmitting unit according to claim 1, characterized in that the transmitting unit ( 1 ) emits the light signal (IR) and the Hochfre frequency signal (HF) at the same time, preferably offset by a time interval (TV).
3. Sending unit according to claim 1, characterized in that the light signal (IR) and the radio frequency signal (HF) after are encoded in a code in which the temporal position of the Light signal (IR) and the radio frequency signal (HF) within of a respective time window (TZI, TZH) one of the position determines assigned information.
4. receiving unit with a second receiver ( 5 ) for a high-frequency signal (HF), which generates and outputs a high-frequency signal (HF) corresponding second signal ( 52 ) when receiving a high-frequency signal (HF),
with a first receiver ( 4 ) for a light signal (IR) which, after receiving a light signal (IR), generates and outputs a light signal (IR) corresponding to the light signal (IR), characterized in that
the first receiver (4) and the second receiver (5) with an evaluation unit (8) are in communication, and the evaluation unit (8) the first and the second signal (S1, S2) ren zufüh, and
that the evaluation unit ( 8 ) evaluates the first and the second signal (S1, S2).
5. Receiver unit according to claim 4, characterized in that the evaluation unit ( 8 ) evaluates the first and the second signal (S1, S2) according to the same code.
6. Receiving unit according to claim 4, characterized in that the evaluation unit ( 8 ) evaluates the first and second signals (S1, S2) according to the position within a first and a second predetermined time window (THI, THZ) and the first and the second Signal (S1, S2) depending on the position within the respective time window (THI, THZ) assigns a correspondingly predetermined information.
7. Receiver unit according to claim 4, characterized in that the evaluation unit ( 8 ) is designed to evaluate the first and the second signal (S1, S2) when the first and the second signal (S1, S2) are supplied simultaneously.
8. transmitting and receiving unit, with a second transmitter ( 3 ) for a high-frequency signal (HF),
with a first transmitter ( 2 ) for a light signal (IR), the light signal (IR) and the high-frequency signal (HF) being coded,
with a second receiver ( 5 ) for the high-frequency signal (HF), which generates and outputs a second signal (S2) corresponding to the high-frequency signal (HF) when a high-frequency signal (HF) is received,
having a first receiver ( 4 ) for light signals (IR) which, after receiving a light signal (IR), generates and outputs a first signal (S1) corresponding to the light signal (IR), characterized in that
  • - That the first and the second signal (S1, S2) are encoded according to the same Chen code,
  • - That the first and the second receiver ( 4 , 5 ) are connected to an evaluation unit ( 8 ) and the evaluation unit ( 8 ) feed the first and the second signal (S1, S2), and
  • - That the evaluation unit ( 8 ) evaluates the first and the second signal (S1, S2) according to the same code.
9. Transmitting and receiving unit according to claim 8, characterized in that the evaluation unit ( 8 ) evaluates the first and second signals (S1, S2) according to the position within the first and the second time window (THI, THZ) and the first or the second signal (S1, S2) depending on the position assigns a correspondingly predetermined information.
DE1996134487 1996-08-26 1996-08-26 Transmitter unit with receiver unit and transceiver for radio frequency signal Withdrawn DE19634487A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE1996134487 DE19634487A1 (en) 1996-08-26 1996-08-26 Transmitter unit with receiver unit and transceiver for radio frequency signal

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE1996134487 DE19634487A1 (en) 1996-08-26 1996-08-26 Transmitter unit with receiver unit and transceiver for radio frequency signal

Publications (1)

Publication Number Publication Date
DE19634487A1 true DE19634487A1 (en) 1998-03-19

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2811120A1 (en) * 2000-06-28 2002-01-04 Siemens Ag Remote control, remote controlable device and remote control arrangement, in particular for a motor vehicle closing device
DE19635279C2 (en) * 1996-08-30 2003-10-02 Siemens Ag Method for sending and receiving light and radio frequency signals
US7362258B2 (en) * 2004-03-31 2008-04-22 Honda Motor Co., Ltd. Transponder detection system using radio and light wave signals
US9602228B1 (en) 2013-01-18 2017-03-21 Gregory R. Warnes Method and apparatus for transmission and reception of a signal over multiple frequencies with time offset encoding at each frequency

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4300600A1 (en) * 1993-01-13 1994-07-14 Hella Kg Hueck & Co Remotely operable security arrangement for vehicle

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4300600A1 (en) * 1993-01-13 1994-07-14 Hella Kg Hueck & Co Remotely operable security arrangement for vehicle

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19635279C2 (en) * 1996-08-30 2003-10-02 Siemens Ag Method for sending and receiving light and radio frequency signals
FR2811120A1 (en) * 2000-06-28 2002-01-04 Siemens Ag Remote control, remote controlable device and remote control arrangement, in particular for a motor vehicle closing device
US6791468B2 (en) 2000-06-28 2004-09-14 Siemens Aktiengesellschaft Remote control, remotely controllable device and remote control configuration
DE10031468B4 (en) * 2000-06-28 2008-05-08 Siemens Ag Remote control
US7362258B2 (en) * 2004-03-31 2008-04-22 Honda Motor Co., Ltd. Transponder detection system using radio and light wave signals
US9602228B1 (en) 2013-01-18 2017-03-21 Gregory R. Warnes Method and apparatus for transmission and reception of a signal over multiple frequencies with time offset encoding at each frequency

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