DE2041632B2

DE2041632B2 - SIGNAL TRANSMISSION SYSTEM

Info

Publication number: DE2041632B2
Application number: DE19702041632
Authority: DE
Inventors: Der Anmelder Ist
Original assignee: Gramcher, Heim, Prof Dr, Erlen bach (Schweiz)
Priority date: 1969-09-08
Filing date: 1970-08-21
Publication date: 1972-03-02
Also published as: BE755675A; ATA732670A; FR2060762A5; CH502660A; DE2041632A1

Description

lung auf das Zentralgerät geleitet wird. Im nächsten Antwortgerät löst der ankommende Impuls einen neuen Impuls aus, der auf der zugeordneten Ader weiterläuft.management is directed to the central device. In the next answering device, the incoming impulse triggers one new impulse which continues on the assigned wire.

Im Zentralgerät werden die ankommenden Impulse elektronisch durch integrierte Schaltelemente ge- *ählt. Die Anzeige erfolgt getrennt nach Antwortmöglichkeiten, und zwar als Summe aller eingegangenen Antworten z. B. mit Hilfe von Ziffernanzeigeröhren je nach Bedarf zwei- oder dreistellig. Es ist auch möglich, nicht die absolute Anzahl der eingegangenen Antworten, sondern die Prozentzahlen, bezogen auf die Gesamtzahl der abgegebenen oder der abgebbaren Antworten anzuzeigen. Mit bekannten Hilfsmitteln lassen sich diese Ergebnisse in Großanzeige sichtbar machen oder ausdrucken.In the central device, the incoming impulses are electronically generated by integrated switching elements. * counts. The display appears separately according to the possible answers, namely as the sum of all received Answers z. B. with the help of numeric display tubes two or three digits as required. It is also possible, not the absolute number of responses received, but the percentages related to indicate the total number of responses submitted or those that can be submitted. With known tools these results can be made visible in a large display or printed out.

Es besteht auch die Möglichkeit, die Antwortgeräte in mehreren Gruppen zusammenzufassen, um Antworten von verschiedenen Teilnehmergruppen getrennt einholen und auswerten zu können. In diesem Falle werden z. B. zwei zu dem Zentralgerät führende Kabelverbindungen vorgesehen, von denen jedes eine Gruppe von Antwortgeräten elektrisch parallel schaltet. It is also possible to combine the answering devices in several groups in order to provide answers to be able to collect and evaluate separately from different groups of participants. In this Trap are z. B. two leading to the central device cable connections are provided, each of which is one Group of answering devices electrically connected in parallel.

Es besteht auch die Möglichkeit, die Antwortgeräte über eine einzige, zum Zentralgerät führende Kabelverbindung statt elektrisch parallel, in Reihe zu schalten.It is also possible to connect the transponders via a single cable connection to the central unit instead of being connected electrically in parallel, in series.

Bei dem beschriebenen Ausfühn'ngsbeispiel ist bei fünf Antwortmöglichkeiten in allen an eine einzige Kabelverbindung angeschlossenen Antwortgeräten z. B. der ersten Antwortmöglichkeit aller Antwortgeräte nur eine einzige Ader der Kabelverbindung zugeordnet. Um die Möglichkeit der Koinzidenz mehrerer, von verschiedenen Antwortgeräten ausgelöster und auf einer einzigen Ader der Kabelverbindung übertragener Impulse vernachlässigbar klein zu halten, muß die Dauer der ausgelösten Impulse ausreichend klein, d. h. etwa 100 ns betragen.In the embodiment described, is at five answer options in all responders connected to a single cable connection z. B. only a single wire of the cable connection assigned to the first answer option of all answering devices. To the possibility of the coincidence of several, triggered by different transponders and to keep the pulses transmitted on a single wire of the cable connection negligibly small, the duration of the triggered pulses must be sufficiently small, i. H. be about 100 ns.

Für das Funktionieren der Anlage ist es nicht unbedingt erforderlich, daß der in einem Antwortgerät erzeugte Zählimpuls in jedem nachfolgenden neu gebildet wird. Es besteht auch die Möglichkeit, entspre-It is not absolutely necessary for the system to function in a transponder generated counting pulse is formed anew in each subsequent one. There is also the possibility of corresponding

»o chend einer Sitzanordnung in einem Auditorium mehrere Antwortgeräte zu einer Gruppe zusammenzufassen und den jeweils ausgelösten Zählimpuls erst in der nächsten Gruppe neu zu bilden.»To combine several transponders into a group according to a seating arrangement in an auditorium and to re-generate the counting pulse triggered in each case in the next group.

Die Antwortgeräte können so ausgebildet sein, daß der erste Tastendruck dieses elektronisch verriegelt, so daß die Abgabe von mehr als einer Antwort pro Gerät ausgeschlossen wird. Mit einer besonderen Taste auf dem Zentralgerät kann es ermöglicht werden, die Antwortgeber auch ohne Löschung der Ergebnis-The transponders can be designed so that the first keystroke locks them electronically, so that the delivery of more than one answer per device is excluded. With a special key It can be made possible on the central device to send the answerers without deleting the result

ao anzeige zu entriegeln.ao indicator to unlock.

Anlagen der beschriebenen Art lassen sich grundsätzlich beliebig groß dimensionieren. Es ist z. B. ohne weiteres möglich, sie für eintausend Antwortgeräte auszulegen. Falls die Anlage fest montiert wird, ist die Einsparung an Kabelverbindungen erheblich. Systems of the type described can in principle be of any size. It is Z. B. It is easily possible to design them for a thousand transponders. If the system is permanently installed, the savings in cable connections are considerable.

Diese Anlagen eignen sich aber auch besonders für den mobilen Einsatz, da sie leicht und mit kleinem Zeitaufwand aufgestellt und wieder abgebaut werden können.These systems are also particularly suitable for mobile use, as they are light and with small Time expenditure can be set up and dismantled again.

Durch die vollelektronische Arbeitsweise wird eine erhebliche Einsparung an Gewicht und Volumen erzielt. Außerdem wird weniger Geräusch erzeugt und die Abnutzung und Störanfälligkeit ist gering.The fully electronic mode of operation results in considerable savings in weight and volume. In addition, less noise is generated and the wear and tear and susceptibility to failure is low.

Claims

the. In modern teaching, especially at the university level, it is desirable to ask questions. all learners to check whether the material covered

1. Signal transmission system with multiple, understood and retained. This can be done by Devices generating counting pulses, which take a day 5 the known selection method, according to the jestatur have, the keys of which are different to the learner from a plurality of presented Responses are assigned and by means of which answers to the test question asked an answer Counting pulses are triggered, which has to be selected via mehrad-. By means of the signal transfer declaration Cable connections to a central device are available to the teacher the result of the submitted that the counting pulses are immediately available after the io answers. He can then Frequency of the different answers given, state the correct answer and comment and reply evaluates, thereby gekenrizeich- with the learner of the modern Lernpsyn e t that the number of cable connections is recognized as particularly important Central device is less than the number of kungseffekt cause.

the devices generating the counting pulses. 15 The well-known signal transmission conditions of the

2. Installation according to claim 1, characterized in that the genus mentioned works with mechanical indicates that a certain key is all on and electromechanical locking and unlocking Only cable connection connected, the buttons of the individual generate the counting pulses generating devices only a single generating device. Run from each of these devices Wire is assigned to the cable connection. 20 multi-core cable connections to the central unit.

3. Installation according to claim 1 or 2, characterized in that this requires a large amount of cables, so that characterized that several, counting pulses generate the known systems, only for a limited number of people Devices via a single cable connection number of devices generating counting pulses (maxielectric parallel. Times 64) were established. Mechanical and elec-

4. Anlap ·! according to claim 1, characterized in that there are 25 tromechanical locking and unlocking devices, Several stars that generate counting pulses also have the disadvantage that they are easy to use can be electrically damaged via a single cable connection, are very heavy are connected in series. and not work silently.

5. Plant according to one of claims 1 to 4, the invention is based on the object of a Sida characterized in that the counting impulses signal transmission system of the gate users mentioned at the beginning Devices are electronically unlocked and enabled to create the use of a possible be locked. large number of devices generating counting pulses

6. System according to one of claims 1 to 5, th allows and yet the cable expense in characterized in that digital integrated holds economically justifiable limits. aside from that Switching elements are used. 35 should be achieved that the assembly and disassembly

7. System according to one of claims 1 to 5, ge such a system is as simple as possible.
characterized in that this object is achieved in that the device generating the pulse pulses outgoing number of cable connections to the central device is low in one of the devices in the direction of the central device than the number of devices generating the pulse pulses again is formed. 40 the devices.

8. Plant according to one of claims 1 to 6, In the following the invention is based on a characterized in that the length of the Z ^ hI- usable signal transmission pulses in group lessons is about 100 ns. supply system explained.

9. System according to one of claims 1 to 8. The system can be a single, to the central device characterized in that several answer 45 leading cable connections have over which all devices are combined into a group that borrowed. Answer devices generating counting pulses elekdurch a single cable connection with the trisch are connected in parallel. Per answer possible central device are connected. A single core of the multi-core cable connection can be envisaged. With five possible answers

50 possibilities you need at least six, expedient

Usually, however, eight cores, namely five cores

for the answer options and one wire for the common reference potential, as well as one wire for the

The invention relates to a signal transmission system. Supply voltage and a wire in order to escape from the position with several devices generating counting pulses to the response devices, which have a keyboard, whose keys transmit an invalid signal. The interlocking of the different answers are assigned and triggered by means of response devices, ie the prevention of the possibility of counting impulses which, via the majority, can be pressed more than one key on the keyboard provided for the answer possible cable connections to a central device, will be instructed that the counting impulses are made immediately after the frequency 60 the response devices,
the various responses submitted are evaluated by pressing a zero key on the central unit. such systems can be set to zero especially in the modern and, as mentioned before, these seminars and in meeting rooms are electronically unlocked for the through-65 through group and class lessons, in lectures and control impulses to the answering devices . When pressing one of the five leadership of votes and elections, for the loading keys of a answering device is z. B. through the provision of seats in the transport sector and for integrated switching elements, an impulse is generated that is used on the wire of the cable assigned to this key in the hospitality industry.