EP0624270A1 - Receiver for the reception of wirelessly transmitted information. - Google Patents

Receiver for the reception of wirelessly transmitted information.

Info

Publication number
EP0624270A1
EP0624270A1 EP19930901597 EP93901597A EP0624270A1 EP 0624270 A1 EP0624270 A1 EP 0624270A1 EP 19930901597 EP19930901597 EP 19930901597 EP 93901597 A EP93901597 A EP 93901597A EP 0624270 A1 EP0624270 A1 EP 0624270A1
Authority
EP
Grant status
Application
Patent type
Prior art keywords
information
characterized
receiving
transmitter
signals
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.)
Granted
Application number
EP19930901597
Other languages
German (de)
French (fr)
Other versions
EP0624270B1 (en )
Inventor
Georg Haubner
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.)
Robert Bosch GmbH
Original Assignee
Robert Bosch GmbH
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

Links

Classifications

    • GPHYSICS
    • G08SIGNALLING
    • G08CTRANSMISSION SYSTEMS FOR MEASURED VALUES, CONTROL OR SIMILAR SIGNALS
    • G08C25/00Arrangements for preventing or correcting errors; Monitoring arrangements
    • GPHYSICS
    • G08SIGNALLING
    • G08BSIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B29/00Checking or monitoring of signalling or alarm systems; Prevention or correction of operating errors, e.g. preventing unauthorised operation
    • G08B29/18Prevention or correction of operating errors
    • G08B29/181Prevention or correction of operating errors due to failing power supply

Abstract

Dispositif permettant de recevoir des informations transmises sans fil, notamment au moyen de signaux lumineux à infrarouge, dans lequel les informations sont émises par un émetteur actionné par une batterie et qui comporte un dispositif indicateur fournissant un signal corrrespondant, que le processus soit complet ou non. Means for receiving information transmitted wirelessly, in particular by means of light signals to infrared, wherein the information is transmitted from a transmitter operated by a battery and which includes a display device providing a corrrespondant signal, the process is complete or not .

Description

Reception apparatus for receiving wirelessly transmitted information:

State of the art

The invention relates to a receiving apparatus for receiving wireless, in particular by means of infrared signals, transmitted information according to the preamble of the main claim. It has been a reception apparatus known from DE-OS 28 24 421.. This includes a microprocessor, a memory and a receiving unit. In this, however, no display unit is provided so that no indication of the reception status of the receiving device is possible. Furthermore, it is known from DE-OS 28 48 533, to assign a display unit of the Empfangsvor¬ direction, the (active / inak¬ TIV) indicating the status of a load connected to the receiving device alarm. Here, the alarm system with the receive and Anzeige¬ unit, for example, is installed in an automobile and can be activated from the outside by means of a battery-powered transmitter device on and off. With the help of two LEDs (red / green) in the Anzeigeein¬ is standardized then signals whether the alarm on / off. Advantages of the Invention

In contrast, the receiving device according to the invention with the characterizing features of the main claim has the advantage that it indicates the reception status. Thus, the user receives the Rückmel¬ dung whether the information provided by him with the help of a battery-powered transmitter arrived correctly at the receiving device. Eliminates this feedback and the transmission can not be successfully carried out after several repetitions, so it is unclear in which device (transmitter / receiver) there is a Feh¬ ler. This can result in mistakenly Emp¬ start building block or the transmitter module is replaced. Such failure repair can be prevented by the subject invention.

By the provisions recited in the dependent claims, an advantageous further development and improvement of in the main claim receiving device is possible. For example it is advantageous to enable the display unit to output a Unvollständigkeitssignales are incomplete information. This incompleteness digkeitssignal example could prompt the same time to replace the battery of the transmitter. This is a fact, often occurring in practice error that manifests itself by the fact that only some of the information received by the receiving device and then no more information is received correctly because the sending device with a defective battery sends the information becoming weaker.

drawing

An embodiment of the invention is prepared in the drawing darge and explained in detail in the following description. 1 shows the schematic illustration of a transmission / reception apparatus; 2 shows a block diagram of a device Sende¬; 3, the light signals for transmission of a given formation In¬; Figure 4 corresponds to the information word that signals the Licht¬ of Figure 3; 5a voltage and Strom¬ running of the light emitter in the transmitting device with good battery; 5b shows voltage and current curve of the light emitter in the transmitter in poor battery; Figure 6 apparatus is a block diagram of the device Empfangs¬; Figure 7 is a structure chart for a program to Ab¬ processing in the evaluation unit of the receiving device.

Description of the embodiment

1 shows an IR-transmitter 10 with an infrared transmitting diode 11 and an IR receiver 12 having a light receiver 16 and the light emitting diodes 13, 14 and 15 as Anzeige¬ unit 30 is shown as an exemplary embodiment. The IR transmitter 10 can, for example, a Fern¬ be easy to use for a variety of applications such as Fern¬ seer, stereo system, car alarm system, door unlocking, VCR, satellite receiver, etc.. The IR receiving device 12 can then be integrated for each Anwendungs¬ falling into the device to be controlled.

In Figure 2 the formal structure of an IR transmitting unit 10 is shown with the aid of a block diagram. The transmitter 10 includes a microprocessor 17 and a button connected thereto memory 18th Furthermore, a driver stage is an¬ 19 is closed to the microprocessor 17th This in turn is having a light emitter 11 in connection Ver¬. As Stromguelle in the IR transmitting unit 10, a battery 20 is provided, the voltage across a button 21 can be supplied to the microprocessor 17th The IR transmitting unit 10 is made via the button switch 21 in operation. By depressing the button 21, the capacitor 33 is loaded, which then subsequently supply 21 power for a certain time after the button is released. This ensures that stands even with short depression of the button 21 sufficient power for the dispatch of information. The microprocessor 17 then executes a program, which is preferably carried out in the memory 18 as a read only memory, is stored. By suitable control of the Trei¬ berstufe 19 is given a certain pulse train of IR light signals from the light emitter. 11 The pulse sequence is fixed and dissolves in the receiving device, in which the receiving device 12 is integrated, a certain control function. If the memory is designed as a matrix-key memory so are as Steuer¬ functional range of functions, depending on the application, conceivable. Such a door can, for example, by the pulse train an alarm system to be turned on, unlocked, the volume of a stereo system to be changed, a video recorder or forwards, are on a particular television umgeschal¬ tet, operated the Polarizer a satellite antenna system , Etc.

A possible pulse sequence is shown in FIG. 3 With the help die¬ ser pulse sequence of light signals, a binary information word is transmitted to the receiving apparatus 12th The light signals have all the same duration. Between the light signals indicate unter¬ schiedliche durations correspond to the bit state of 0 or 1. This corresponds to a bit-serial, pulse-width-modulated data transmission. The information word transmitted with the pulse sequence of Figure 3 is shown in FIG. 4 It consists of eight bits. The information word additional check bits, such as parity bits, etc., and start and stop bits can be added for data transmission. With the transmission of an 8-bit information word 256 verschie¬ dene control functions can be transmitted to the receiving device. but it is also possible to transmit more information words in succession to the receiving device 12th This means that more than 256 information can be transmitted to the receiving device 12th If more information words consecutively transmitted to the Empfangsvor¬ direction, it makes sense between the Informationswor¬ th synchronization time to be seen.

Figure 5a shows the current and voltage waveforms at the light emitter 11 of transmitter device 10 in the event that the battery 20 of the Sendegerä¬ tes 10 has a proper charge level. The current path corresponds here as shown in Figure 3, the pulse sequence of light signals.

Figure 5b shows in contrast, the current and voltage waveforms at the light emitter 11 of transmitter device 10 in the event that the battery 20 of the transmission apparatus 10 does not have a proper state of charge. There is seen that the individual current pulses with a lapse of time fortschrei¬ are weaker and also the voltage collapses with fort¬ lapse of time more and more. Thus, in this case, not all light pulses are sent word for the transferred Informations¬. The receiver device 12 is then not fully received in the location information word 31st

In Figure 6, the receiving apparatus is shown 12th This includes an evaluation unit 29 and a display unit 30 connected thereto to the evaluation unit 29, the receiving unit 16 and a serial interface connected 27th The serial interface 27 is in communication with a monitor 28th The Empfangs¬ device 12 is preferably grated inte¬ to the display device 28th The evaluation unit 29 includes a microprocessor 22 and a memory 23. In the display unit 30 has three driving stages 24, 25 and 26 and three light emitting diodes 13, 14 and 15 are shown. But it can show, among other things as a LCD or seven-Segmentan¬, etc. trained. The operation of the Empfangsvor¬ device 12 will be explained below with reference to the flowchart of FIG. 7 7 shows a flowchart for a program which is stored in the memory 23 of the receiving apparatus 12 and is executed by the microprocessor 22nd Program step 40 shows the start of the program after the application of the supply voltage to the receiving device 12. Thereafter, the program waits for the entering of a Licht¬ pulse. If a light pulse is detected in query 41, 42 is driven, the first light emitting diode 13 in the Pro¬ program step. With the arrival of this light-emitting diode controller 13 via the driver stage 24 to display the running-in of information. After that program step in Pro¬ 43, a time counter T to the value 0. In Pro¬ program step 44, the timer T by 1 Enkrement (T) is increased. The value T. corresponds to the processing time for the Programm¬ steps 44, 45 and 46. In interrogation 45 the count of the counter Zeit¬ T with a predetermined threshold value T is compared. If the

Counter T has not yet reached this threshold T, then o subsequently checks in query 46 whether a further light pulse was received. If this is the case, then the bit state of the first bit of the information word 0 is set as 0 in program step fest¬ 47th Would be detected in the query 46 is not the reception of a Licht¬ pulse, the program is again continued with program step 44th If a limit value is exceeded fest¬ made in interrogation 45, then the count T is compared in query 48 to a second threshold T. If the time counter T is less than or equal to the threshold T, it is also examined über¬ in query 49, whether a light pulse has been received in the meantime. If this is not the case, is also driven fort¬ with the program step 44th a light pulse is detected in query 49, the bit state of the first bit 0 of the word In¬ formation is set as 1 in program step 50th Is in interrogation 48, a limit value is exceeded again detected during the time counter T, the program jumps to query 71, and controlled there also, whether a light pulse has been received. If this is not the case, the time counter T is increased in program step 72 again and conducted another query 73 for checking the time counter T. If the time counter is less than the threshold T, the process continues with query 71 max, the time counter is greater than T, then in max

Program step 74, the first light emitting diode 13 off and nach¬ following in the program step 75, the third light emitting diode 15 connected ein¬. This signals the incompleteness of the received information. Your can also the importance of a need for a battery change in the transmitting device 10 are allotted. Then either the program is in program step 76 canceled and / or called other parts of the program that route, for example via the serial interface 27, an error output to the screen 28th If a light pulse detected in the query 71, it is assumed that there is a new start pulse was present and continued the program with program step 43rd

no threshold crossing is detected in query 48 and the bit state is set as "0" or in the program step 50 as "1" in the program step 47, the program steps are processed 43 to 50 in the same way, only with the difference that in the program steps 47 and 50 is not the bit state of the first bit of the information word 0 is set 31, but the bit state of the second bit 1, and successively the bits 2, 3, 4 to 7 is evaluated. When all bits of the information word 31 received correctly on the be¬ prescribed manner, in the program step 68, the first light emitting diode 13 is turned off and turned on, the second light emitting diode 14 in the program step 69th Since the information words are transmitted in a very short time, the light emitting diode 13 can be driven with an additional control circuit so that a light signal of sufficient duration will be given. The second light-emitting diode 14 then signals the completeness of the received In¬ formations. It can also be activated using appropriate means for a certain period of time. The program then continues with another program 70th This program section is then used for example for decryption of the received information and the execution of the relevant information Steuer¬ function. the control function may be performed via the serial interface 27 to the display device 28 of the monitor apparatus 28 itself aus¬ even after transmission of the corresponding control commands. and the display messages can also (the In¬ formation completely / incompletely received, battery change required at the transmitter, etc.) using the serial interface output 27 and / or over the screen 28th

As a further embodiment of the invention could be provided means which do not allow transmission of electromagnetic waves, but for example with ultrasonic signals. It is also possible, by suitable means, for transmission of the individual bits of the In¬ formation words each bit of the information words assigned to a fixed Über¬ transfer time and to carry out the distinction between the two bit states 0 and 1 due to the presence or absence of light or sound energy.

For a more exact recognition of a need for a Batterie¬ exchange to allow the transmitting device 10, it is useful in a further embodiment of the invention to measure the strength of each received light pulse in dependence on the number of light pulses received and evaluated. With repeated transmission of the pulse trains, the number of pulse trains can measure ge and stored as a learning value. The number of the pulse trains from, so this is a timely recognition nach¬ let Direction battery capacity. Also a return signal to the transmitter is conceivable. Also the decrease of an average number of über¬ transmitted pulses per pulse train can be used for early warning of the decrease in the battery capacity.

Claims

claims
1. Check receiving apparatus for receiving wireless, in particular by means of infrared signals, transmitted information to be transmitted from a battery-operated transmitter, characterized by an evaluation unit, that the evaluation unit (29) includes means for mation the incoming Infor¬ to be exhaustive and that, when completeness of the information, the evaluation unit (29) activates a display unit (30) for delivery of a complete signal.
2. Reception device according to claim 1, characterized in that in incompleteness of the information, the evaluation unit (29) activates the display unit (30) for delivering a Unvollständigkeitssignales.
3. receiving apparatus according to any one of the preceding claims, characterized in that it receives the information in the form of at least one of a plurality of bit information word (31), preferably bit serially.
4. Receiving apparatus according to claim 3, characterized in that it waits for a synchronization time when receiving several information words (31) between the einzel¬ NEN information words (31).
5. receiving apparatus according to claim 3 or 4, characterized in that it increases a time counter between the successive receiving signals.
6. receiving device according to claim 5, characterized in that it is similar to the state of the time counter with predetermined limit values ​​ver¬ that the / the comparison result / se defines the respective bit state (LOW / HIGH) or the incompleteness of the received information.
7. receiver ngsvorrichtung according to any one of the preceding claims 3 to 6, characterized in that it contains the quantity of the information signals per information word and / or the number of information words and / or the average decrease in signals for detecting a low battery capacity at the transmitter 10 evaluates and this indicates to the transmitter 10 by outputting a Unvollständigkeitssignales and / or further signals.
8. receiving apparatus according to claim 7, characterized in that it, gives in time as a further signal is a warning signal to identify that the battery capacity decreases at the transmitter.
EP19930901597 1992-01-31 1992-12-19 Receiver for the reception of wirelessly transmitted information Expired - Lifetime EP0624270B1 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
DE4202759 1992-01-31
DE19924202759 DE4202759C2 (en) 1992-01-31 1992-01-31 Reception apparatus for receiving wirelessly transmitted information
PCT/DE1992/001067 WO1993015486A1 (en) 1992-01-31 1992-12-19 Receiver for the reception of wirelessly transmitted information

Publications (2)

Publication Number Publication Date
EP0624270A1 true true EP0624270A1 (en) 1994-11-17
EP0624270B1 EP0624270B1 (en) 1996-09-11

Family

ID=6450684

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19930901597 Expired - Lifetime EP0624270B1 (en) 1992-01-31 1992-12-19 Receiver for the reception of wirelessly transmitted information

Country Status (5)

Country Link
US (1) US5559499A (en)
EP (1) EP0624270B1 (en)
JP (1) JP3315695B2 (en)
DE (1) DE4202759C2 (en)
WO (1) WO1993015486A1 (en)

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US5872512A (en) * 1996-02-09 1999-02-16 Interactive Technologies, Inc. Apparatus and method for reducing errors in a battery operated sensing circuit
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Also Published As

Publication number Publication date Type
DE4202759A1 (en) 1993-08-12 application
WO1993015486A1 (en) 1993-08-05 application
JPH07503089A (en) 1995-03-30 application
EP0624270B1 (en) 1996-09-11 grant
JP3315695B2 (en) 2002-08-19 grant
DE4202759C2 (en) 1994-04-14 grant
US5559499A (en) 1996-09-24 grant

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