EP0678839B1 - Elektrische Schaltungsanordnung zur Kodierung und Übertragung von Messdaten - Google Patents
Elektrische Schaltungsanordnung zur Kodierung und Übertragung von Messdaten Download PDFInfo
- Publication number
- EP0678839B1 EP0678839B1 EP95101404A EP95101404A EP0678839B1 EP 0678839 B1 EP0678839 B1 EP 0678839B1 EP 95101404 A EP95101404 A EP 95101404A EP 95101404 A EP95101404 A EP 95101404A EP 0678839 B1 EP0678839 B1 EP 0678839B1
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- EP
- European Patent Office
- Prior art keywords
- multiplex
- local
- electrical circuit
- circuit arrangement
- transmitting
- 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
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- G—PHYSICS
- G08—SIGNALLING
- G08C—TRANSMISSION SYSTEMS FOR MEASURED VALUES, CONTROL OR SIMILAR SIGNALS
- G08C15/00—Arrangements characterised by the use of multiplexing for the transmission of a plurality of signals over a common path
- G08C15/06—Arrangements characterised by the use of multiplexing for the transmission of a plurality of signals over a common path successively, i.e. using time division
- G08C15/12—Arrangements characterised by the use of multiplexing for the transmission of a plurality of signals over a common path successively, i.e. using time division the signals being represented by pulse characteristics in transmission link
Definitions
- the present invention relates to an electrical circuit arrangement with at least two local transmission units for recording and coding of local measurement signals and for transmission of the coded measurement signals to a Central unit, the local transmission units each having a comparator Comparison of the local measurement signal with a reference value and trigger means for Have generation of a binary signal to be transmitted to the central unit.
- Measurement signal an exact stochastic uniform distribution of the reference values required.
- the prior art often an ergodic or stochastic random number generator used.
- a serious disadvantage is that such, extreme complicated devices are difficult to control. It is also used a very large number of reference values generated by a random generator, in order to be able to assume the required uniform distribution of the reference values. This has the disadvantageous consequence, in particular, that the local Measurement signals over a longer period of time is essential.
- An electrical circuit arrangement for Transmission and display of physical in electrical form Quantities or signals using binary pulse sequences are from the German patent specification DE-A-22 32 450 is known. From this document an arrangement of at least to be found in a comparator by at least one stochastic generator generated threshold values with the amplitudes of physical quantities or signals compares and binary decisions based on these comparisons to form the Output values meet, these output values occurring in the form of a pulse train.
- the invention is based on the object, these known to improve electrical circuit arrangements such that the control of the Reference value is as simple, reliable and central as possible.
- the underlying task several, not necessarily record, transmit and transmit independent measurements simultaneously to be able to process.
- the central unit has a multiplex channel generator, Control means for determining the reference value and multiplex receiving means for recording and processing by the local Transmission units transmitted binary signals, and that the local Transmission units each processing means for processing the of the Control means set reference value and multiplex transmission means for transmitting the binary signal generated by the trigger means to the multiplex receiving means the central unit, wherein the multiplex transmission means are clearly assigned to the local transmission units.
- the multiplex channel generator preferably a clock and a pulse generator has, by connecting to a multiplex two-wire line with both Multiplex receiving means of the central unit as well as with the local ones Transmission units connected, each of the local transmission units one Address in the multiplex two-wire system.
- the multiplex two-wire line will be a simultaneous transmission of all of the local Measurement data determined transmission units guaranteed to the central unit. Due to the almost unlimited possibilities of channel selection in time multiplexing can use almost any number of local transmission units in this way can be connected to the central unit, however, due to the use the two-wire technology maintain the traceability of the circuit at all times remains.
- the use of the multiplex two-wire method guarantees the simultaneous and equal provision and processing of accumulating data delivered by the respective local transmission units become.
- the multiplex two-wire technology also enables this due to their very simple basic principle, the most varied and various uses and applications.
- the Multiplex channel generator a pulse train, the pulses different Transmission time channels correspond, and both the multiplex transmission means as well as the multiplex receiving means have decoding means through which they activated during at least one transmission time channel assigned to them become.
- This ensures the exact transmission of the determined and digitized Measurement data from the multiplex transmission means arranged in the local transmission units to the multiplex receiving means arranged in the central unit accomplished. Due to the identical arrangement of the decoding means both in the multiplex transmission means and in the multiplex reception means Here is a clear assignment of the respective local Data coming in transmission units to the corresponding receiving means in the central unit guarantees what is not only the desired transmission security guaranteed, but also significantly increases the transmission speed.
- control means exist to determine the reference value from a one synchronization pulse Generating synchronization pulse generator, which is preferably a structural unit forms with the multiplex channel generator.
- This one synchronization pulse per Pulse train is used by all local connected to the central unit Transmission units and in particular the processing equipment simultaneously recorded what the simple and safe operation of the central Control to determine the reference value guaranteed.
- the processing means of local Transmission units advantageously a detector circuit, a counter and a digital / analog (D / A) converter.
- the Comparator in the respective local transmission unit Difference value between the local measurement signal and the reference value switches those downstream of the comparator Trigger means by (i.e. binary signal value "1"), or disable (i.e. Binary signal value "0").
- comparator and trigger means The digitalization of the analog measurement signals, for example, has been proven especially with regard to the speed and safety of the Data transmission as extremely advantageous, not least because digital Data transmission the susceptibility to faults and the frequency of errors is much lower than in the transmission of analog signals.
- the Transmission means of the local transmission units to a multiplex transmitter transmits.
- the receiving means of Central processing unit a multi-channel multiplex receiver, at least two counters and an evaluation circuit, with one counter each one local Transmission unit is assigned. This arrangement is an optimal Possible application for the multiplex method, because the sequence of individual pulse trains a simultaneous and error-free transmission of the local Measurement signals of all local transmission units connected to the central unit guaranteed in the shortest possible time.
- Each of these n local transmission units 2 is supplied with a local, for example analog measurement signal UM 1 , UM 2 , ..., UM n .
- the multiplex two-wire line 3 consists of two wires; For reasons of simplicity and clarity, the multiplex two-wire line 3 is thus identified by a line in FIGS. 1 to 9.
- FIG. 2 shows a section of a block diagram of an inventive electrical circuitry.
- the central unit 1 and one of several local transmission units 2 through the multiplex two-wire line 3 are connected.
- the central unit 1 has a multiplex channel generator 4 on.
- the central unit 1 further comprises a multi-channel multiplex receiver 5, counter 6 and an evaluation circuit, the present Embodiment consists of an evaluation unit 7 and a display unit 8.
- the local transmission unit 2 also shown in FIG. 2 has one Detector circuit 9, a counter 10, a digital / analog (D / A) converter 11, a comparator 12, a trigger 13 and a multiplex transmitter 14.
- the multiplex channel generator 4 arranged in the central unit 1 generates in periodic time intervals a pulse train 15 shown in Figure 3.
- This pulse train 15 is composed of a synchronization pulse 16 and a sequence of at least two channel pulses 17a, 17b, ..., of which the one shown here Embodiment each a channel pulse 17a, 17b, ... one each of the Central unit 1 is assigned to connected local transmission units 2.
- the immediately successive pulse trains 15 are transmitted via the multiplex two-wire line 3 to the individual local transmission units 2.
- a detector circuit 9 arranged in each local transmission unit 2 opens the time window assigned to the respective local transmission unit 2 for the corresponding channel pulse, that is to say the detector circuit 9 arranged in the first local transmission unit 2 opens the time window for the channel pulse 17 a, that in the second local transmission unit 2 arranged detector circuit 9 opens the time window for the channel pulse 17b, etc.
- the counter 10 sends to the digital / analog (D / A) converter 11 a digital signal which corresponds to a sequence of the bit sequences assigned to the decimal numbers 0 to 7.
- the D / A converter 11 converts this digital signal into a corresponding analog signal, which is referred to as the reference value UR.
- the difference value UD k between the, for example analog measurement signal UM k supplied to the local transmission unit 2 and the reference value UR is determined, the index k denoting the kth local transmission unit 2.
- a trigger 13 downstream of the comparator 12 switches through, which corresponds to a binary signal value "1"
- the trigger 13 for a non-positive difference value UD k ⁇ 0 disables (binary signal value "0").
- the trigger 13 therefore serves to digitize the analog difference value UD k , each of the binary signals generated in it being transmitted as a channel pulse from the multiplex transmitter 14 on the channel A k to the multiplex receiver 5 arranged in the central unit 1.
- This multiplex receiver 5 is set up for multi-channel operation, since it successively picks up the respective binary signal from all n local transmission units 2 as a channel pulse.
- the multiplex channel generator 4 which activates the corresponding channel A k for the binary signal coming from the kth local transmission unit 2, that is to say all n local transmission units 2 in succession after the respective binary signal queried and this recorded by the multi-channel multiplex receiver 5.
- the further evaluation of the respective binary signal is then carried out separately, ie channel-specifically in the counters 6, which are assigned to the evaluation unit 7. If necessary, the evaluation unit 7 is also followed by the display unit 8, which displays the data evaluated by means of counter 6 and evaluation unit 7 in a suitable form.
- FIG. 4 shows an exemplary embodiment for the multiplex channel generator 4, an input stage 41, a trigger 42, a clock 43, an output stage 44, a pulse generator 45 and an encoding module 46.
- the multiplex channel generator 4 belongs here to a digital pulse code on the Multiplex two-wire line 3 impress and so the entire electrical Circuit arrangement by clocking each individual module of the electrical Control circuit arrangement.
- the multiplex channel generator 4 is used but also as a power supply for the multiplex transmitter 14, if this is not its own Power supply should have.
- the multiplex channel generator 4 for the Generation of, for example, 8, 16, 32, 64 or 128 channels can be encoded.
- the Input stage 41 detects whether the channel whose time window is currently open is activated by the multiplex transmitter 14. If this is the case, it changes Signal of the trigger 42 to the pulse generator 45, the pulse shape for the concerned, d. H. the activated channel.
- the voltage signals are transmitted in a multiplex two-wire process with typical frequencies of the order of 1 kilohertz.
- the pulse generator 45 generates pulse trains shown as examples in FIG 15, which are synchronized by means of the clock 43.
- the number of with these Pulse trains 15 channels to be transmitted are, as mentioned above, determined by the coding module 46.
- the output stage 44 which amplifies the signal and on the multiplex two-channel line 3 outputs, must be protected against short circuit, since the multiplex transmitter 14th the entire multiplex two-wire transmission system for a period of time that is in is about a sixth to a quarter of the time length of a channel pulse, shorts to indicate that input stage 144 of the one shown in FIG Multiplex transmitter 14 shown is activated.
- FIG. 6 shows an embodiment for the multiplex transmitter 14, the an "AND" gate 141 with two inputs, a comparator 142, one Counter 143, an input stage 144, a coding module 145, a reset 146 and an input terminal 147, the comparator 142, the counter 143 and the coding module 145 are taken together as decoding means can.
- the principle of operation of the multiplex transmitter 14, which is connected in parallel in the multiplex two-wire arrangement, is based on the fact that, when the input stage 144 is detected as open, ie activated, or closed, the multiplex transmitter 14 sends a signal to the multiplex channel generator 4, which in turn changes its pulse code from "0" to "1". This is done in the following ways:
- the input stage 144 of the multiplex transmitter 14 is coded for a specific channel pulse by means of the coding module 145.
- the counter 143 is used to monitor the digital pulses which are output by the multiplex channel generator 4, the counter 143 being reset by the reset device 146 as soon as the synchronization pulse 16 is detected.
- the channel 142 for which the multiplex transmitter 14 is coded is compared by means of the comparator 142 with the stored number of channel pulses 17a, 17b,... If these two parameters are of equal size, the comparator 142 sends a signal to one of the two inputs of the "AND" gate circuit 141.
- the other input of this "AND" gate circuit 141 is connected directly to the input stage 144 of the multiplex transmitter 14.
- both inputs of the "AND” gate circuit 141 are activated, ie the output of the "AND” gate circuit 141 is at "high", the multiplex transmitter 14 closes for a period of time which is approximately one sixth to one quarter of the length of time of a channel pulse, the entire multiplex two-wire transmission system is short, whereupon the multiplex channel generator 4 is caused to change its pulse code during the encoded pulse time, this change being shown by way of example in FIG. If the input of the "AND” gate circuit 141 directly connected to the input stage 144 is not activated when its pulse code is reached, ie the output of the "AND” gate circuit 141 is at "low”, the output goes into a waiting cycle until the The next time input port 147 reaches its matching pulse code.
- FIG. 7 shows an exemplary embodiment for a multiplex receiver 5, the one Detector 51, a comparator 52, a counter 53, an output stage 54 Encoding module 55, a reset 56 and an output terminal 57, wherein the comparator 52, the counter 53 and the coding module 55 together as Decoding means can be understood.
- DIP dual-in-line
- Figures 8 and 9 show two ways of connecting between the counter 10 and the D / A converter 11 in a local Transmission unit 2.
- Figure 8 as well as in Figure 9 are each Exemplary embodiments are presented in which the counter 10 and the D / A converter 11 are connected by an 8-bit line.
- the corresponding table has accordingly the following form: Bit sequence associated decimal number 0 0 0 0 1 0 0 4th 0 1 0 2nd 1 1 0 6 0 0 1 1 1 0 1 5 0 1 1 3rd 1 1 1 7
- the right column of this table shows a stochastic fluctuation of the signal arriving at the input terminal of the D / A converter 11, so that the D / A converter 11 output analog reference signal UR no continuous, for example, has a monotonously increasing shape, but rather as desired arbitrarily, stochastically evenly fluctuates.
Description
- FIGUR 1:
- ein Blockschaltbild einer erfindungsgemäßen elektrischen Schaltungsanordnung;
- FIGUR 2:
- einen Ausschnitt aus einem Blockschaltbild einer erfindungsgemäßen elektrischen Schaltungsanordnung;
- FIGUR 3:
- einen Impulszug, dessen Impulse verschiedenen Übertragungszeitkanälen entsprechen;
- FIGUR 4:
- ein Blockschaltbild eines Multiplex-Kanalgenerators;
- FIGUR 5:
- einen Ausschnitt aus einem Impulszug;
- FIGUR 6:
- ein Blockschaltbild eines Multiplex-Senders;
- FIGUR 7:
- ein Blockschaltbild eines Multiplex-Empfängers;
- FIGUR 8:
- ein Ausführungsbeispiel einer Verbindung zwischen einem Zähler und einem D/A-Wandler in einer lokalen Übertragungseinheit; und
- FIGUR 9:
- ein alternatives Ausführungsbeispiel einer Verbindung zwischen einem Zähler und einem D/A-Wandler in einer lokalen Übertragungseinheit;
Während die gestrichelte Linie die Impulsform 18 für einen freigeschalteten und damit aktivierten Kanal darstellt (= Binärsignalwert "1"), repräsentiert die durchgezogene Linie die Impulsform 19 für einen gesperrten Kanal (= Binärsignalwert "0"). Eine typische Größenordnung für die maximale Impulshöhe ist hierbei Umax = 8 Volt, die typische zeitliche Länge eines solchen Kanalimpulses beträgt beispielsweise 1 ms, wie bereits oben erwähnt. Übertragen werden die Spannungssignale im Multiplex-Zwei-Draht-Verfahren hierbei mit typischen Frequenzen von der Größenordnung 1 Kilohertz.
Die Eingangsstufe 144 des Multiplex-Senders 14 ist mittels des Kodiermoduls 145 für einen bestimmten Kanalimpuls kodiert. Der Zähler 143 dient der Überwachung der Digitalimpulse, die vom Multiplex-Kanalgenerator 4 ausgegeben werden, wobei der Zähler 143 durch den Rücksteller 146 zurückgestellt wird, sobald der Synchronisationsimpuls 16 detektiert wird. Mittels des Vergleichers 142 wird der Kanal, für den der Multiplex-Sender 14 kodiert ist, mit der aufgespeicherten Anzahl von Kanalimpulsen 17a, 17b, ... verglichen. Wenn diese beiden Parameter gleich groß sind, sendet der Vergleicher 142 ein Signal zu einem der beiden Eingänge der "AND"-Torschaltung 141. Der andere Eingang dieser "AND"-Torschaltung 141 ist direkt mit der Eingangsstufe 144 des Multiplex-Senders 14 verbunden. Wenn beide Eingänge der "AND"-Torschaltung 141 aktiviert sind, d. h. der Ausgang der "AND"-Torschaltung 141 auf "high" steht, schließt der Multiplex-Sender 14 für einen Zeitraum, der in etwa ein Sechstel bis ein Viertel der zeitlichen Länge eines Kanalimpulses beträgt, das gesamte Multiplex-Zwei-Draht-Übertragungssystem kurz, woraufhin der Multiplex-Kanalgenerator 4 veranlaßt wird, seinen Impulscode während der kodierten Impulszeit zu ändern, wobei diese Änderung in Figur 5 exemplarisch gezeigt ist. Falls der direkt mit der Eingangsstufe 144 verbundene Eingang der "AND"-Torschaltung 141 bei Erreichen seines Impulscodes nicht aktiviert ist, d. h. der Ausgang der "AND"-Torschaltung 141 auf "low" steht, begibt sich der Ausgang in einen Wartezyklus, bis den Eingangsanschluß 147 das nächste Mal sein passender Impulscode erreicht.
Bitfolge | zugehörige Dezimalzahl |
0 0 0 | 0 |
0 0 1 | 1 |
0 1 0 | 2 |
0 1 1 | 3 |
1 0 0 | 4 |
1 0 1 | 5 |
1 1 0 | 6 |
1 1 1 | 7 |
Bitfolge | zugehörige Dezimalzahl |
0 0 0 | 0 |
1 0 0 | 4 |
0 1 0 | 2 |
1 1 0 | 6 |
0 0 1 | 1 |
1 0 1 | 5 |
0 1 1 | 3 |
1 1 1 | 7 |
Claims (12)
- Elektrische Schaltungsanordnung mit mindestens zwei lokalen Übertragungseinheiten (2) zur Aufnahme und Kodierung von lokalen Meßsignalen und zur Übertragung der kodierten Meßsignale an eine Zentraleinheit (1), welche lokalen Übertragungseinheiten (2) jeweils einen Komparator (12) zum Vergleich des lokalen Meßsignals mit einem Referenzwert und Triggermittel (13) zur Erzeugung eines an die Zentraleinheit (1) zu übertragenden Binärsignals aufweisen,
dadurch gekennzeichnet,a) daß die Zentraleinheit (1)a1) einen Multiplex-Kanalgenerator (4) mita1.1) Variationsmitteln zur Veränderung des Referenzwertes in jeder lokalen Übertragungseinheit (2),a1.2) Adressiermitteln zur Adressierung jeder lokalen Übertragungseinheit (2) unda1.3) Kollektormitteln zum Sammeln der von den lokalen Übertragungseinheiten (2) übertragenen Binärsignale, unda2) Multiplex-Empfangsmittel (5, 6, 7, 8) zur Aufnahme und Verarbeitung der von den lokalen Übertragungseinheiten (2) übertragenen Binärsignale aufweist, undb) daß die lokalen Übertragungseinheiten (2) jeweilsb1) Verarbeitungsmittel (9, 10, 11) zur Erkennung eines von der Zentraleinheit (1) gegebenen Befehls, den Referenzwert zu variieren, zur Durchführung dieser Variation und zur Verarbeitung des vom Multiplex-Kanalgenerator (4) variierten Referenzwertes undb2) Multiplex-Übertragungsmittel (14) zur Übertragung des von den Triggermitteln (13) erzeugten Binärsignals an die Multiplex-Empfangsmittel (5, 6, 7, 8) der Zentraleinheit (1) aufweisen, wobei die Multiplex-Übertragungsmittel den Lokalen Übertragungseinheiten jeweils eindeutig zugeordnet sind. - Elektrische Schaltungsanordnung nach Anspruch 1, dadurch gekennzeichnet, daß der Multiplex-Kanalgenerator (4) durch Anschluß an eine Multiplex-Zwei-Draht-Leitung (3) sowohl mit den Multiplex-Empfangsmitteln (5, 6, 7, 8) der Zentraleinheit (1) als auch mit den lokalen Übertragungseinheiten (2) verbunden ist, wobei jede der lokalen Übertragungseinheiten (2) eine Adresse im Multiplex-Zwei-Draht-System hat.
- Elektrische Schaltungsanordnung nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß der Multiplex-Kanalgenerator (4) einen Taktgeber (43) und einen Impulsgenerator (45) aufweist.
- Elektrische Schaltungsanordnung nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, daß der Multiplex-Kanalgenerator (4) einen Impulszug (15) erzeugt, dessen Impulse verschiedenen Übertragungszeitkanälen entsprechen, und daß die Multiplex-Übertragungsmittel (14) und die Multiplex-Empfangsmittel (5, 6, 7, 8) Dekodiermittel (52, 53, 55) aufweisen, durch die sie während mindestens eines ihnen zugeordneten Übertragungszeitkanals aktiviert werden.
- Elektrische Schaltungsanordnung nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, daß die Steuerungsmittel aus einem einen Synchronisationsimpuls erzeugenden Sychronisationsimpulserzeuger bestehen.
- Elektrische Schaltungsanordnung nach Anspruch 5, dadurch gekennzeichnet, daß der Multiplex-Kanalgenerator (4) und der Synchronisationsimpulserzeuger eine bauliche Einheit bilden.
- Elektrische Schaltungsanordnung nach einem der Ansprüche 1 bis 6, dadurch gekennzeichnet, daß die Verarbeitungsmittel (9, 10, 11) der lokalen Übertragungseinheiten (2) eine Detektorschaltung (9), einen Zähler (10) und einen Digital/Analog- (D/A-) Wandler (11) aufweisen.
- Elektrische Schaltungsanordnung nach einem der Ansprüche 1 bis 7, dadurch gekennzeichnet, daß der Komparator (12) in der jeweiligen lokalen Übertragungseinheit (2) den jeweiligen Differenzwert (UD) zwischen dem lokalen Meßsignal (UM) und dem Referenzwert (UR) bildet.
- Elektrische Schaltungsanordnung nach Anspruch 8, dadurch gekennzeichnet, daß die Triggermittel (13) der lokalen Übertragungseinheiten (2) je nach Vorzeichen des Differenzwertes (UD) durchschalten oder sperren.
- Elektrische Schaltungsanordnung nach einem der Ansprüche 1 bis 9, dadurch gekennzeichnet, daß die Übertragungsmittel der lokalen Übertragungseinheiten (2) einen Multiplex-Sender (14) aufweisen, der den von den Triggermitteln (13) gelieferten Signalwert "1" bzw. "0" an die Multiplex-Empfangsmittel (5, 6, 7, 8) der Zentraleinheit (1) überträgt.
- Elektrische Schaltungsanordnung nach einem der Ansprüche 1 bis 10, dadurch gekennzeichnet, daß die Multiplex-Empfangsmittel (5, 6, 7, 8) der Zentraleinheit (1) einen Mehrkanal-Multiplex-Empfänger (5), mindestens zwei Zähler (6) und eine Auswerteschaltung (7, 8) aufweisen, wobei jeweils ein Zähler (6) jeweils einer lokalen Übertragungseinheit (2) zugeordnet ist.
- Elektrische Schaltungsanordnung nach einem der Ansprüche 1 bis 11, dadurch gekennzeichnet, daß der Ausgangsanschluß des Zählers (10) für das niedrigstwertige Bit (LSB) mit dem Eingangsanschluß des D/A-Wandlers (11) für das höchstwertige Bit (MSB), der Ausgangsanschluß des Zählers (10) für das zweitniedrigstwertige Bit mit dem Eingangsanschluß des D/A-Wandlers (11) für das zweithöchstwertige Bit usw. verbunden ist.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE4413566A DE4413566C2 (de) | 1994-04-19 | 1994-04-19 | Elektrische Schaltungsanordnung |
DE4413566 | 1994-04-19 |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0678839A1 EP0678839A1 (de) | 1995-10-25 |
EP0678839B1 true EP0678839B1 (de) | 1999-05-12 |
Family
ID=6515860
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP95101404A Expired - Lifetime EP0678839B1 (de) | 1994-04-19 | 1995-02-02 | Elektrische Schaltungsanordnung zur Kodierung und Übertragung von Messdaten |
Country Status (3)
Country | Link |
---|---|
US (1) | US5544166A (de) |
EP (1) | EP0678839B1 (de) |
DE (2) | DE4413566C2 (de) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102004062525B4 (de) * | 2004-12-24 | 2007-03-01 | Messring Systembau Msg Gmbh | Messdatenerfassungsvorrichtung für Prüfstände |
DE102009005453A1 (de) | 2009-01-21 | 2010-07-22 | Ags Elektronik Gmbh | Sensor-Bussystem |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2126598A5 (de) * | 1971-02-12 | 1972-10-06 | Schlumberger Compteurs | |
DE2317851B2 (de) * | 1973-04-10 | 1975-04-24 | Grundig E.M.V. Elektro-Mechanische Versuchsanstalt Max Grundig, 8510 Fuerth | Digital-Analog-Wandler |
US4023139A (en) * | 1974-10-24 | 1977-05-10 | Gene Samburg | Security control and alarm system |
DE2823709A1 (de) * | 1978-05-31 | 1979-12-06 | Vdo Schindling | Verfahren zur zeitmultiplexen uebertragung von daten analoger signale in einem bus-system |
US4672374A (en) * | 1985-06-20 | 1987-06-09 | Firecom, Inc. | System for bilateral communication of a command station with remotely located sensors and actuators |
US5196823A (en) * | 1986-04-24 | 1993-03-23 | Multitecno S.P.A. | Deratization apparatus with remote terminals |
JPH01133494A (ja) * | 1987-11-19 | 1989-05-25 | Shinko Electric Co Ltd | ビデオハードコピー装置の自動調整方法 |
DE3739725A1 (de) * | 1987-11-24 | 1989-06-08 | Vdo Schindling | Anordnung zur ermittlung fehlerfreier digitaler elektrischer groessen bei einer mehrkanal-analog/digital-wandlung |
-
1994
- 1994-04-19 DE DE4413566A patent/DE4413566C2/de not_active Expired - Fee Related
-
1995
- 1995-02-02 EP EP95101404A patent/EP0678839B1/de not_active Expired - Lifetime
- 1995-02-02 DE DE59505880T patent/DE59505880D1/de not_active Expired - Lifetime
- 1995-03-28 US US08/440,309 patent/US5544166A/en not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
US5544166A (en) | 1996-08-06 |
DE4413566A1 (de) | 1995-10-26 |
EP0678839A1 (de) | 1995-10-25 |
DE4413566C2 (de) | 1999-12-23 |
DE59505880D1 (de) | 1999-06-17 |
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