DE1138090B - Pulse circuit for axle counting systems - Google Patents
Pulse circuit for axle counting systemsInfo
- Publication number
- DE1138090B DE1138090B DEV18843A DEV0018843A DE1138090B DE 1138090 B DE1138090 B DE 1138090B DE V18843 A DEV18843 A DE V18843A DE V0018843 A DEV0018843 A DE V0018843A DE 1138090 B DE1138090 B DE 1138090B
- Authority
- DE
- Germany
- Prior art keywords
- pulse
- resistors
- pulse circuit
- axle counting
- counting systems
- 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.)
- Pending
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B61—RAILWAYS
- B61L—GUIDING RAILWAY TRAFFIC; ENSURING THE SAFETY OF RAILWAY TRAFFIC
- B61L1/00—Devices along the route controlled by interaction with the vehicle or train
- B61L1/16—Devices for counting axles; Devices for counting vehicles
- B61L1/167—Circuit details
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03K—PULSE TECHNIQUE
- H03K3/00—Circuits for generating electric pulses; Monostable, bistable or multistable circuits
- H03K3/02—Generators characterised by the type of circuit or by the means used for producing pulses
- H03K3/26—Generators characterised by the type of circuit or by the means used for producing pulses by the use, as active elements, of bipolar transistors with internal or external positive feedback
- H03K3/28—Generators characterised by the type of circuit or by the means used for producing pulses by the use, as active elements, of bipolar transistors with internal or external positive feedback using means other than a transformer for feedback
- H03K3/281—Generators characterised by the type of circuit or by the means used for producing pulses by the use, as active elements, of bipolar transistors with internal or external positive feedback using means other than a transformer for feedback using at least two transistors so coupled that the input of one is derived from the output of another, e.g. multivibrator
- H03K3/286—Generators characterised by the type of circuit or by the means used for producing pulses by the use, as active elements, of bipolar transistors with internal or external positive feedback using means other than a transformer for feedback using at least two transistors so coupled that the input of one is derived from the output of another, e.g. multivibrator bistable
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Automation & Control Theory (AREA)
- Mechanical Engineering (AREA)
- Manipulation Of Pulses (AREA)
Description
Impulsschaltung für Achszählanlagen Die Erfindung betrifft eine Impulsschaltung für Achszählanlagen, mit welcher von der Fahrtrichtung abhängige Impulsfolgen über eine mit elektronischen Bauelementen ausgestattete Kippstufe Zählimpulse erzeugt werden.Pulse circuit for axle counting systems The invention relates to a pulse circuit for axle counting systems, with which the direction of travel dependent pulse sequences over a multivibrator equipped with electronic components generates counting pulses will.
Es sind Impulsschaltungen für Achszählanlagen bekannt, bei denen die durch einen Impulsgeber erzeugten überlappten Impulse auf eine mit elektronischen Bauelementen ausgestattete Kippstufe im Kombination mit einer Gatterschaltung gegeben und in Abhängigkeit von der Fahrtrichtung der auslösenden Achse in die entsprechende Zähleinrichtung eingegeben werden.There are pulse circuits for axle counting systems are known in which the pulses generated by a pulse generator overlapped with an electronic one Components equipped flip-flop in combination with a gate circuit and depending on the direction of travel of the triggering axis in the corresponding one Counting device can be entered.
Der Erfindung liegt die Aufgabe zugrunde, die bekannten Impulsschaltungen so zu verbessern, daß bei gleicher Arbeitsweise und Beibehaltung der geforderten Sicherheit der technische Aufwand wesentlich vermindert und damit auch die Störanfälligkeit verringert wird. Erfindungsgemäß wird dies in der Weise erreicht, daß die Kollektorenstromkreise zweier zur Kippstufe gehörenden Transistoren durch eine Reihenschaltung zweier Widerstände mit zwischengeschaltetem Kondensator verbunden sind, zwischen dem und den Widerständen sich die beiden Abgriffe für die richtungsunterschiedlichen Zählimpulse befinden.The invention is based on the object of the known pulse circuits to be improved in such a way that with the same working method and retention of the required Safety significantly reduces the technical effort and thus also the susceptibility to failure is decreased. According to the invention this is achieved in such a way that the collector circuits two transistors belonging to the multivibrator through a series connection of two resistors are connected with an interposed capacitor, between the and the resistors the two taps for the counting pulses in different directions are located.
Zum besseren Anpassen an die Speicher- bzw. Zählanordnungen sind nach einem weiteren Erfindungsmerkmal die Widerstände einstellbar.For better adaptation to the storage or counting arrangements are after Another feature of the invention, the resistors adjustable.
Eine weitere Ausbildung der Erfindung besteht darin, daß die Kippstufe unmittelbar an die Kontakte des Impulsgebers angeschlossen ist.Another embodiment of the invention is that the tilting stage is directly connected to the contacts of the pulse generator.
Die Erfindung sei an Hand des in der Zeichnung dargestellten Ausführungsbeispieles näher erläutert. Die Emitter E 1 und E2 der beiden zur Kippstufe gehörigen Transistoren T 1 und T 2 liegen über den Widerstand R 1 an Pluspotential. Da auch die Basen B 1 und B 2 der Transistoren über die in Grundstellung geschlossenen Kontakte x und y eines Impulsgebers an Pluspotential anliegen, sind beide Transistoren T 1 und T 2 gesperrt.The invention will be explained in more detail with reference to the embodiment shown in the drawing. The emitters E 1 and E2 of the two transistors T 1 and T 2 belonging to the trigger stage are connected to positive potential via the resistor R 1. Since the bases B 1 and B 2 of the transistors are also connected to positive potential via the contacts x and y of a pulse generator, which are closed in the basic position, both transistors T 1 and T 2 are blocked.
Wird nun zunächst der Kontakt x geöffnet, so liegt die Basis B 1 nunmehr über die Widerstände R 2 und R7 an Minuspotential; der Transistor T1 wird also leitend. Es fließt ein Strom vom Pluspotential über den Widerstand R1, Emitter El, Kollektor K l, Schaltpult P 1 und den Widerstand R 6 zum Minuspotential. Durch den Spannungsabfall über den Widerstand R 6 liegt am Schaltpult P 1 ein positives Potential gegen Minus, so daß sich der Kondensator C entsprechend auflädt.If the contact x is first opened, the base B 1 is now connected to negative potential via the resistors R 2 and R7; the transistor T1 thus becomes conductive. A current flows from the positive potential through the resistor R1, emitter El, collector K l, control panel P 1 and the resistor R 6 to the negative potential. Due to the voltage drop across the resistor R 6, there is a positive potential against minus at the control panel P 1, so that the capacitor C is charged accordingly.
öffnet nun im weiteren Ablauf der Kontakt y, so ändert sich durch das Anliegen des positiven Potentials vom Kollektor K 1 über Widerstand R 3 an der Basis B 2 des Transistors T 2 zunächst nichts, da der Transistor T 2 weiterhin gesperrt bleibt.If the contact y opens in the further course of the process, the application of the positive potential from the collector K 1 via resistor R 3 to the base B 2 of the transistor T 2 initially does not change anything, since the transistor T 2 remains blocked.
Erst wenn jetzt Kontakt x wieder schließt, wechseln die Transistoren T 1 und T 2 ihren Schaltzustand: Durch das Schließen von Kontakt x liegt wieder positives Potential an der Basis B 1, womit der Transistor T 1 gesperrt wird und der Stromfluß von Plus über R 1, E 1, K 1, P 1 und R 6 nach Minus unterbrochen ist. In demselben Moment wird jedoch der Transistor T 2 leitend, da seine Basis B 2 weder vom Kollektor K 1 noch über den geöffneten Kontakt y positives Potential erhält, sondern über die Widerstände R 3 und R 6 an Minuspotential anliegt. Das bedingt einen Stromfluß vom Pluspol über den Widerstand R 1, EmitterE2, KollektorK2, SchaltpunktP2 undWiderstand R 7 zumMinuspol. Durch den Spannungsabfall über Widerstand R 7 liegt am Schaltpunkt P 2 ein positives Potential gegen Minus. Zu dieser Spannung addiert sich die in Reihe liegende Ladung des Kondensators C, so daß sich ein Spannungsstoß ergibt, der fast das Doppelte des anliegenden Potentials beträgt. Dieser Spannungsstoß wird zwischen dem Widerstand R 4 und dem Kondensator C abgegriffen und ist jetzt ausreichend, um die Zählanordnung in bekannter Weise zu betätigen.Only when contact x closes again do transistors T 1 and T 2 change their switching state: By closing contact x, there is again a positive potential at base B 1, which blocks transistor T 1 and the flow of current from plus through R 1 , E 1, K 1, P 1 and R 6 is interrupted after minus. At the same moment, however, the transistor T 2 becomes conductive, since its base B 2 receives positive potential neither from the collector K 1 nor via the open contact y, but is connected to negative potential via the resistors R 3 and R 6. This causes a current to flow from the positive pole via the resistor R 1, emitter E2, collectorK2, switching point P2 and resistor R 7 to the negative pole. Due to the voltage drop across resistor R 7, there is a positive potential to minus at switching point P 2. The series charge of the capacitor C is added to this voltage, so that a voltage surge results which is almost twice the applied potential. This voltage surge is tapped between the resistor R 4 and the capacitor C and is now sufficient to operate the counting arrangement in a known manner.
öffnen und schließen die Kontakte y und x entsprechend der Fahrtrichtung, in umgekehrter Reihenfolge, so wechseln auch die Transistoren T 1 und T 2 ihren Schaltzustand in umgekehrter Reihenfolge. In diesem Falle hat auch der zu erzielende Spannungsstoß die entgegengesetzte Richtung und wird zwischen dem Widerstand R 5 und dem Kondensator C abgegriffen.open and close the contacts y and x according to the direction of travel, in reverse order, the transistors T 1 and T 2 also change their switching state in the reverse order. In this case, the voltage surge to be achieved also has the opposite direction and is tapped between the resistor R 5 and the capacitor C.
Der als Zählimpuls verwendete Spannungsstoß kann nur dann entstehen, wenn eine vorbeirollende Achse zunächst nur den einen Kontakt, danach beide Kontakte gleichzeitig und schließlich nur noch den anderen Kontakt betätigt. Damit ist das Entstehen eines Fehlimpulses durch eine Achse, die in den Bereich des die überlappten Impulse erzeugenden Impulsgebers einrollt und dann innerhalb dieses Bereiches ihre Fahrtrichtung ändert, entsprechend der Aufgabenstellung für solche Impulsschaltungen unterbunden.The voltage surge used as a counting pulse can only occur when an axis rolls by first only one contact, then both contacts operated at the same time and finally only the other contact operated. This is the creation of a missing pulse through an axis that is in the area of the pulse generator generating the overlapped pulses rolls in and then within this area changes its direction of travel, according to the task for such impulse switching prevented.
Claims (3)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DEV18843A DE1138090B (en) | 1960-06-22 | 1960-06-22 | Pulse circuit for axle counting systems |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DEV18843A DE1138090B (en) | 1960-06-22 | 1960-06-22 | Pulse circuit for axle counting systems |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE1138090B true DE1138090B (en) | 1962-10-18 |
Family
ID=7577411
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DEV18843A Pending DE1138090B (en) | 1960-06-22 | 1960-06-22 | Pulse circuit for axle counting systems |
Country Status (1)
| Country | Link |
|---|---|
| DE (1) | DE1138090B (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1019689B (en) | 1956-06-20 | 1957-11-21 | Siemens Ag | Pulse circuit for axle counting systems |
-
1960
- 1960-06-22 DE DEV18843A patent/DE1138090B/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1019689B (en) | 1956-06-20 | 1957-11-21 | Siemens Ag | Pulse circuit for axle counting systems |
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