DK163807B - CIRCUIT DEVICE FOR MONITORING THE PRESENCE OF SKIN VEHICLES WITHIN SPECIFIC SKIN SECTION - Google Patents
CIRCUIT DEVICE FOR MONITORING THE PRESENCE OF SKIN VEHICLES WITHIN SPECIFIC SKIN SECTION Download PDFInfo
- Publication number
- DK163807B DK163807B DK144385A DK144385A DK163807B DK 163807 B DK163807 B DK 163807B DK 144385 A DK144385 A DK 144385A DK 144385 A DK144385 A DK 144385A DK 163807 B DK163807 B DK 163807B
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- DK
- Denmark
- Prior art keywords
- oscillator
- frequency
- time base
- clock time
- circuit
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- 238000012544 monitoring process Methods 0.000 title claims abstract description 8
- 238000011156 evaluation Methods 0.000 claims abstract description 26
- 230000008878 coupling Effects 0.000 claims abstract description 14
- 238000010168 coupling process Methods 0.000 claims abstract description 14
- 238000005859 coupling reaction Methods 0.000 claims abstract description 14
- 230000006698 induction Effects 0.000 claims abstract description 12
- 230000008859 change Effects 0.000 claims abstract description 4
- 230000010355 oscillation Effects 0.000 claims abstract description 4
- 239000010453 quartz Substances 0.000 claims description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 4
- 238000001208 nuclear magnetic resonance pulse sequence Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 3
- 238000013461 design Methods 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 229910052742 iron Inorganic materials 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000008901 benefit Effects 0.000 description 1
- 239000003990 capacitor Substances 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000001939 inductive effect Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 230000002123 temporal effect Effects 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B61—RAILWAYS
- B61L—GUIDING RAILWAY TRAFFIC; ENSURING THE SAFETY OF RAILWAY TRAFFIC
- B61L21/00—Station blocking between signal boxes in one yard
- B61L21/06—Vehicle-on-line indication; Monitoring locking and release of the route
-
- 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
- B61L1/02—Electric devices associated with track, e.g. rail contacts
- B61L1/08—Electric devices associated with track, e.g. rail contacts magnetically actuated; electrostatically actuated
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Automation & Control Theory (AREA)
- Train Traffic Observation, Control, And Security (AREA)
- Measuring And Recording Apparatus For Diagnosis (AREA)
- Emergency Alarm Devices (AREA)
- Auxiliary Drives, Propulsion Controls, And Safety Devices (AREA)
- Electric Propulsion And Braking For Vehicles (AREA)
Abstract
Description
iin
DK 163807 BDK 163807 B
Den foreliggende opfindelse angår en kredsløbsanordning til overvågning af tilstedeværelsen af skinnekøretøjer indenfor bestemte skinneafsnit ved hjælp af to induktionssløjfer, hvis induktansændringer detekteres med hver sin oscillator, hvis svingninger om-5 formes til firkantimpulser og deles i en respektiv frekvensdeler samt tilføres et efter frekvensdelerne indkoblet evalueringskredsløb, som i afhængighed af den pågældende induktansændring afgiver en optaget- eller fri melding og under iagttagelse af de fra begge induktionssløjfer hidrørende meldinger foretager en bestemmelse af 10 kørselsretningen.The present invention relates to a circuit device for monitoring the presence of rail vehicles within particular rail sections by means of two induction loops, the inductance changes of which are detected with each oscillator, the oscillations of which are transformed into square pulses and divided into a respective frequency divider and an input frequency cut in which, depending on the change inductance in question, gives a busy or free message and, taking into account the messages from both induction loops, determines the direction of travel.
En kredsløbsanordning af den foran beskrevne art er kendt fra DE-OS 31 00 724, hvor begge oscillatorer over en omskifter er koblet til et fælles evalueringskredsløb. De med forskellig frekvens arbejdende oscillatorer svinger til stadighed, selv om kun én 15 oscillatorfrekvens til enhver tid evalueres. Som omskifter anvendes en elektronisk tæller, der modtager sin omskifteimpuls fra den respektive netop i evalueringen værende oscillatorfrekvens, hvorved der fås den ulempe, at et omskifteforløb ikke finder sted, når den netop i evalueringen værende oscillator falder ud. Herved forbliver 20 den udfaldne oscillator forbundet med evalueringskredsløbet, så at hele systemet bliver uvirksomt. En yderligere ulempe består i, at omskifteren ved en ændring af oscillatorfrekvensen, eksempelvis på grund af milieupåvirkninger, omskifter i et på samme måde ændret tidsinterval, fordi omskifteprocessen er afhængig af den pågældende 25 oscillatorfrekvens. Følgelig er en overvågning af omskifteren ikke mulig.A circuit device of the kind described above is known from DE-OS 31 00 724, where both oscillators are connected over a switch to a common evaluation circuit. The oscillators operating at different frequencies constantly fluctuate, although only one oscillator frequency is evaluated at any one time. As a switch, an electronic counter is used which receives its switching pulse from the respective oscillator frequency just in the evaluation, thereby causing the disadvantage that a switching cycle does not occur when the oscillator in the evaluation falls out. In this way, the dropped oscillator remains connected to the evaluation circuit so that the entire system becomes inactive. A further disadvantage is that the switch, when changing the oscillator frequency, for example due to environmental effects, switches in a similarly changed time interval, because the switching process is dependent on the relevant oscillator frequency. Consequently, monitoring of the switch is not possible.
Såfremt induktionssløjferne for de to oscillatorer er installeret i skinnen rumligt tæt ved siden af hinanden og elektrisk adskilt fra hinanden af kortslutningsforbindelser, er der ved de 30 kendte fremgangsmåder endelig den ulempe, at der over skinnekøretøjernes jernmasser kan optræde som stød betegnede koblinger mellem de to til stadighed svingende oscillatorer, hvorved forskellen mellem de forskellige oscillatorfrekvenser ophæves, og en entydig tildeling af de enkelte frekvenser til deres respektive oscillatorer 35 ikke mere er mulig i tilstrækkelig grad. Denne tildeling er imidlertid tvingende nødvendig for en retningsbestemmelse af skinnekøretøjerne. Også når oscillatorernes frekvenser ændres stærkt på grund af et udfald af frekvensbestemmende elementer, er en rumlig tildeling og dermed en retningsbestemmelse i evalueringskredsløbet 2Finally, if the induction loops of the two oscillators are installed in the rail spatially close to each other and electrically separated from each other by short-circuit connections, the disadvantage of the 30 known methods is that the iron masses of the rail vehicles can act as shocks designated couplings between the two constantly oscillating oscillators, whereby the difference between the different oscillator frequencies is eliminated, and an unequivocal assignment of the individual frequencies to their respective oscillators 35 is no longer sufficiently possible. However, this allocation is imperative for a directional determination of the rail vehicles. Also, when the frequencies of the oscillators are greatly altered due to an outcome of frequency determining elements, a spatial assignment and thus a directional determination in the evaluation circuit 2
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ikke mere entydigt mulig.no more unambiguously possible.
Formålet med den foreliggende opfindelse er at tilvejebringe en kredsløbsanordning til overvågning af tilstedeværelsen af skinnekøretøjer indenfor bestemte skinneafsnit af den som kendt forudsatte 5 art, som ved udfald af en oscillator i det mindste stadig muliggør detektering af skinnekøretøjerne, idet den indbyrdes påvirkning af oscillatorerne skal forhindres, og overvågningen af omskiftningsforløbet skal gennemføres.The object of the present invention is to provide a circuit device for monitoring the presence of rail vehicles within certain rail sections of the known presumed type, which, at the failure of an oscillator, at least still allows detection of the rail vehicles, the interference of the oscillators to be prevented. and the monitoring of the switching process must be carried out.
Ifølge opfindelsen opnås dette ved, at en af oscillatorfre-10 kvensen uafhængig kvartsstabiliseret takttidsbasis skiftevis kobler oscillatorerne uvirksomme, at takttidsbasen er ført over galvanisk adskilte koblingsled, at den frekvensdeler, som er tildelt den til enhver tid uvirksom koblede oscillator dynamisk sættes i en defineret stilling, og at de to frekvensdelere hver er tildelt sit eget 15 evalueringskredsløb.According to the invention, this is achieved by alternately switching the oscillators inoperative of the oscillator frequency independent quartz-stabilized clock time base, the clock timing base being passed over galvanically separated switching joints, the frequency divider assigned to the inactive switched oscillator at any time. , and that the two frequency dividers are each assigned its own 15 evaluation circuit.
Kredsløbsanordningen ifølge opfindelsen har den fordel, at forskellige oscillatorfrekvenser ikke mere er nødvendige på grund af anvendelsen af hver deres evalueringskredsløb, og at en indbyrdes påvirkning af oscillatorerne ved rumligt tæt ved siden af hinanden i 20 skinnen installerede induktionssløjfer undgås ved, at en oscillator til enhver tid kobles uvirksom af takttidsbasen. En påvirkning af de to oscillatorkredse på grund af den fælles takttidsbasis forhindres ved, at denne over galvanisk adskilte koblingsled virker på oscillatorerne. Den reglementerede funktion af takttidsbasen kan overvå-25 ges over de to evalueringskredsløb ved på den ene side, at afstandene mellem impulsfølgerne overvåges i hvert evalueringskredsløb, og på den anden side overvåges modsætningsforholdet mellem de enkelte impulsfølger i begge evalueringskredsløb i afhængighed af frekvensen af takttidsbasen. Mellem de som en slags datatelegrammer virkende 30 impulsfølger optrædende støjimpulser bliver erkendt som sådanne, fordi frekvensen af takttidsbasen og dermed impulsfølgeafstandstiderne pr. system er kendte. For at holde impulsfølgeafstandstiderne konstante bliver frekvensdeleren sat i en defineret stilling, når den tilhørende oscillator bliver koblet uvirksom. Denne overføring 35 af frekvensdeleren til en defineret stilling sker dynamisk af den grund, at det herved undgås ved et udfald af takttidsbasen og på grund af den under visse omstændigheder på frekvensdeleren liggende vedvarende impuls, at hele systemet forbliver uvirksomt.The circuitry according to the invention has the advantage that different oscillator frequencies are no longer needed due to the use of each of their evaluation circuits and that an interference between the oscillators at spatially close to each other in the rail installed induction loops is avoided by an oscillator for any time is idle by the clock time base. An influence on the two oscillator circuits due to the common clock time base is prevented by this acting over galvanically separated switching joints on the oscillators. The regulated function of the clock time base can be monitored over the two evaluation circuits by, on the one hand, the distances between the pulse sequences are monitored in each evaluation circuit, and on the other hand, the contradiction between the individual pulse sequences in both evaluation circuits is monitored, depending on the frequency of the clock time base. Between the noise pulses acting as a kind of data telegrams, pulse noise pulses are recognized as such because the frequency of the clock time base and thus the pulse tracking distance times per minute. system are known. In order to keep the pulse tracking distances constant, the frequency divider is set to a defined position when the associated oscillator becomes inoperative. This transfer of the frequency divider to a defined position occurs dynamically because it is thereby avoided by a failure of the clock time base and because of the constant pulse on the frequency divider that the whole system remains inoperative.
Ifølge et yderligere særligt træk ved opfindelsen bliverAccording to a further particular feature of the invention
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3 koblingsleddene drevet med konstant strøm. Ved en overvågning af strømgennemgangen i evalueringskredsløbet ved hjælp af en operationsforstærker kan funktionen af takttidsbasen på denne måde ligeledes overvåges.3 coupling joints powered at constant current. By monitoring the current flow in the evaluation circuit by means of an operational amplifier, the function of the clock time base can thus also be monitored.
5 Ved en foretrukken udførelsesform ifølge opfindelsen er kob lingsleddene udformet som optokoblere og antiparallel kobl et. Ved denne udformning af koblingsleddene som optokoblere kan der anvendes i handlen værende komponenter.In a preferred embodiment of the invention, the coupling joints are designed as optocouplers and antiparallel coupler. In this design of the coupling joints as optocouplers, commercially available components can be used.
Ifølge et yderligere kendetegn ved opfindelsen er der mellem 10 takttidsbasen og hvert af koblingsleddene indkoblet en forstærker, hvoraf den ene forstærker har en inverteret indgang. Denne videre-udformning ifølge opfindelsen muliggør anvendelse af i handlen værende kvartsenheder som takttidsbasis.According to a further feature of the invention, between the 10 clock time base and each of the coupling links, an amplifier is connected, one of the amplifiers having an inverted input. This further design according to the invention enables the use of commercially available quartz units as a clock time basis.
Med opfindelsen bliver det endelig foreslået at forsyne hvert 15 evalueringskredsløb med en mikrodatamat, hvorved en del af funktionerne i stedet for kostbart materiel erstattes af en passende programmering af mikrodatamaten. Takttidsbasen er ifølge opfindelsen frit programmerbar.With the invention, it is finally proposed to provide every 15 evaluation circuits with a microcomputer, whereby some of the functions instead of costly equipment are replaced by an appropriate programming of the microcomputer. The clock time base according to the invention is freely programmable.
Opfindelsen skal herefter forklares nærmere under henvisning 20 til tegningen, der viser et udførelseseksempel på en kredsløbsanordning ifølge opfindelsen.The invention will then be explained in more detail with reference to the drawing, which shows an embodiment of a circuit device according to the invention.
Figuren viser to oscillatorer la,lb, som hver omfatter en indenfor et skinneafsnit udlagt induktionssløjfe 2a,2b. Efter hver oscillator la henholdsvis lb er der indkoblet en frekvensdeler 25 3a,3b, som opdeler de til firkantimpulser omformede svingninger fra oscillatoren la henholdsvis lb og overfører dem til en forstærker 4a henholdsvis 4b for sikkert at kunne overføre impulsfølgerne over gængse kabler fra oscillatorsiden til evalueringskredsløbet og for at være uafhængig af kablernes koblingskapaciteter. Ved hjælp af 30 denne forstærker 4a henholdsvis 4b bliver impulsfølgerne af firkantimpulser ved hjælp af en tolederledning 5a,5b videreført til et evalueringskredsløb 6a,6b, som er anbragt i en vilkårlig afstand fra induktionssløjferne 2a og 2b. Hvert evalueringskredsløb 6a,6b omfatter en signaludgang 7a,7b, der er udformet som et fra systemet 35 galvanisk adskilt element, eksempelvis som relækontakt eller som DIN-grænseflade for datasystemer. Hvert evalueringskredsløb 6a,6b er endelig forsynet med en spændingskilde 8a henholdsvis 8b, der samtidig over tolederledningen 5a henholdsvis 5b ved hjælp af en konstantspændingsregulator 9a henholdsvis 9b forsyner oscillatoren 4The figure shows two oscillators 1a, 1b, each comprising an induction loop 2a, 2b laid out within a rail section. After each oscillator 1a and 1b, respectively, a frequency divider 3a, 3b is divided which divides the oscillator 1a and 1b transforms into square pulses and transmits them to an amplifier 4a and 4b, respectively, in order to safely transmit the pulse sequences over conventional cables from the oscillator side to evaluation. and to be independent of the coupling capabilities of the cables. By means of this amplifier 4a and 4b, respectively, the impulse sequences of square pulses are transmitted by means of a dual conductor line 5a, 5b to an evaluation circuit 6a, 6b which is located at a random distance from the induction loops 2a and 2b. Each evaluation circuit 6a, 6b comprises a signal output 7a, 7b which is designed as a galvanically separated element from the system 35, for example as a relay contact or as a DIN interface for data systems. Each evaluation circuit 6a, 6b is finally provided with a voltage source 8a and 8b, respectively, which simultaneously supply the oscillator 4 via a constant voltage regulator 5a and 5b, respectively.
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la henholdsvis lb, frekvensdeleren 3a henholdsvis 3b og forstærkeren 4a, 4b med spænding.1a, 1b, frequency divider 3a and 3b, respectively, and the amplifier 4a, 4b with voltage.
Over den ene konstantspændingsregulator 9b bliver yderligere en takttidsbasis 10 forsynet med konstant spænding. Ved udføre!ses-5 eksemplet drejer det sig her om en kvartsstabiliseret takttidsbasis.Above one constant voltage regulator 9b, a further time base 10 is provided with constant voltage. In the Example 5 example, this is a quartz-stabilized clock time base.
Efter denne takttidsbasis 10 er der indkoblet to forstærkere 11a,11b, af hvilke forstærkeren 11a har en inverteret indgang. Disse forstærkere 11a,11b driver antiparallelt koblede koblingsled 12a,12b, som i udførelseseksemplet hvert er dannet af en lysdiode og 10 en fototransistor. Til fototransistoren er der sluttet såvel den tilhørende oscillator la henholdsvis lb som den tilsvarende frekvensdeler 3a henholdsvis 3b, idet tilslutningen af frekvensdeleren 3a henholdsvis 3b sker over en dynamisk indgang.After this clock time base 10, two amplifiers 11a, 11b are connected, of which amplifier 11a has an inverted input. These amplifiers 11a, 11b operate antiparallel-coupled coupling links 12a, 12b, each of which in the exemplary embodiment are formed by an LED and a phototransistor. Both the associated oscillator 1a and 1b, respectively, and the corresponding frequency divider 3a and 3b, respectively, are connected to the phototransistor, the connection of the frequency divider 3a and 3b being connected over a dynamic input.
I driftstilstanden svinger oscillatorerne la henholdsvis lb med 15 en af induktionssløjferne 2a henholdsvis 2b dannet induktion og til den tilhørende kondensator svarende frekvens. Disse svingninger bliver i frekvensdeleren 3a henholdsvis 3b omdannet til firkantim-pulser og ændret med hensyn til deres frekvens. En lysdiode i koblingsleddene 12a og 12b drives skiftevis i gennemgangsretning af 20 frekvensen af takttidsbasen 10. Den dertil hørende fototransistor kobler den tilførte spænding til den tilhørende oscillator la henholdsvis lb og frekvensdeler 3a henholdsvis 3b, hvorved oscillatoren la henholdsvis lb kobles uvirksom, og den tilhørende frekvensdeler 3a henholdsvis 3b bliver sat i en defineret stilling.In the operating state, the oscillators 1a and 1b, respectively, oscillate with an induction generated by the induction loops 2a and 2b, respectively, and frequency corresponding to the corresponding capacitor. These oscillations in the frequency divider 3a and 3b, respectively, are converted into square-hour pulses and changed with respect to their frequency. An LED in the coupling links 12a and 12b is alternately driven in a transverse direction by the frequency of the clock time base 10. The associated phototransistor couples the applied voltage to the associated oscillator 1a and 1b and frequency parts 3a and 3b respectively, whereby the oscillator 1a and 1b are respectively inoperative. frequency divisions 3a and 3b, respectively, are set in a defined position.
25 På denne måde bevirker takttidsbasen 10 over koblingsleddene 12a henholdsvis 12b, at til enhver tid kun én oscillatorkreds afgiver impulsfølger til det tilhørende evalueringskredsløb 6a henholdsvis 6b. Ved at drive lysdioderne med konstant strøm er det muligt i evalueringskredsløbet 6b ved hjælp af en foran indkoblet 30 operationsforstærker 13 at overvåge funktionsevnen af takttidsbasen 10, fordi den for takttidsbasen 10 benyttede spændingskilde 8b befinder sig i dette delsystem.In this way, the clock time base 10 across the coupling links 12a and 12b, respectively, causes only one oscillator circuit to give pulse sequences to the associated evaluation circuit 6a and 6b, respectively. By operating the LEDs at constant current, it is possible in evaluation circuit 6b by means of a pre-switched 30 operational amplifier 13 to monitor the performance of the clock time base 10, because the voltage source 8b used for the clock time base 10 is in this subsystem.
Så snart et skinnekøretøj med sin jernmasse kører over en i sporet udlagt induktionssløjfe 2a henholdsvis 2b, ændrer induktansen 35 af denne induktionssløjfe sig og dermed oscillatorfrekvensen af den tilhørende oscillator la henholdsvis lb. Denne ændring bliver konstateret i det tilhørende evalueringskredsløb 6a henholdsvis 6b og udnyttet som optaget melding for det overvågede sporafsnit.As soon as a rail vehicle with its iron mass runs over an inductive loop 2a and 2b respectively in the track, the inductance 35 of this induction loop changes and thus the oscillator frequency of the associated oscillator la and lb, respectively. This change is detected in the associated evaluation circuit 6a and 6b, respectively, and utilized as a recorded message for the monitored track section.
Ved den tidsmæssige sammenligning af de i de toBy the temporal comparison of those in the two
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5 evalueringskredsløb 6a og 6b konstaterede induktansændringer konstateres endvidere retningen af skinnekøretøjet i det overvågede sporafsnit. Denne retningsdetektering tjener til at ind- og udkoble til sporafsnittet tildelte signaler over baneovergangssikringer.Further, inductance changes detected in evaluation circuits 6a and 6b, the direction of the rail vehicle in the monitored track section is also noted. This directional detection serves to enable and disable assigned crossover fuse signals to the track section.
5 10 15 20 25 30 355 10 15 20 25 30 35
Claims (6)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE3412150 | 1984-03-31 | ||
| DE3412150A DE3412150C2 (en) | 1984-03-31 | 1984-03-31 | Circuit arrangement for monitoring the presence of rail vehicles within certain track sections |
Publications (4)
| Publication Number | Publication Date |
|---|---|
| DK144385D0 DK144385D0 (en) | 1985-03-29 |
| DK144385A DK144385A (en) | 1985-10-01 |
| DK163807B true DK163807B (en) | 1992-04-06 |
| DK163807C DK163807C (en) | 1992-09-07 |
Family
ID=6232303
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DK144385A DK163807C (en) | 1984-03-31 | 1985-03-29 | CIRCUIT DEVICE FOR MONITORING THE PRESENCE OF SKIN VEHICLES WITHIN SPECIFIC SKIN SECTION |
Country Status (5)
| Country | Link |
|---|---|
| EP (1) | EP0157099B1 (en) |
| AT (1) | ATE54882T1 (en) |
| DE (2) | DE3412150C2 (en) |
| DK (1) | DK163807C (en) |
| NO (1) | NO161427C (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AU599898B2 (en) * | 1985-03-28 | 1990-08-02 | Westinghouse Electric Corporation | Vital apparatus for determining train travel direction |
| AT397792B (en) * | 1990-06-05 | 1994-06-27 | Manfred Dipl Ing Uttenthaler | Signal system for protecting a single-track route section |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3863206A (en) * | 1974-03-12 | 1975-01-28 | Lee C Rabie | Digital Vehicle Detector |
| US3943339A (en) * | 1974-04-29 | 1976-03-09 | Canoga Controls Corporation | Inductive loop detector system |
| DE2840929C2 (en) * | 1978-09-20 | 1982-07-01 | Siemens AG, 1000 Berlin und 8000 München | Method for determining an occupied or vacant message for a route section |
| DE2929494B1 (en) * | 1979-07-20 | 1980-07-17 | Siemens Ag | Method and circuit arrangement for determining the entry and / or exit of a vehicle, in particular a road transport vehicle, into or from a defined monitoring area |
| DE3100724A1 (en) * | 1981-01-13 | 1982-07-29 | Scheidt & Bachmann GmbH, 4050 Mönchengladbach | Method for monitoring the presence of vehicles within certain traffic areas |
| DE3115863C2 (en) * | 1981-04-21 | 1983-01-05 | Siemens AG, 1000 Berlin und 8000 München | Track circuit for railway safety systems |
| DE3127672C2 (en) * | 1981-07-13 | 1984-05-17 | Siemens AG, 1000 Berlin und 8000 München | Equipment in shunting systems for track clearance measurement |
| DE3139068A1 (en) * | 1981-10-01 | 1983-04-14 | Siemens AG, 1000 Berlin und 8000 München | Track circuit arrangement |
-
1984
- 1984-03-31 DE DE3412150A patent/DE3412150C2/en not_active Expired
-
1985
- 1985-01-29 EP EP85100864A patent/EP0157099B1/en not_active Expired - Lifetime
- 1985-01-29 DE DE8585100864T patent/DE3578798D1/en not_active Expired - Fee Related
- 1985-01-29 AT AT85100864T patent/ATE54882T1/en active
- 1985-02-25 NO NO850747A patent/NO161427C/en unknown
- 1985-03-29 DK DK144385A patent/DK163807C/en not_active IP Right Cessation
Also Published As
| Publication number | Publication date |
|---|---|
| DE3578798D1 (en) | 1990-08-30 |
| DE3412150A1 (en) | 1985-10-03 |
| NO161427B (en) | 1989-05-08 |
| NO850747L (en) | 1985-10-01 |
| DK163807C (en) | 1992-09-07 |
| NO161427C (en) | 1989-08-16 |
| ATE54882T1 (en) | 1990-08-15 |
| DK144385D0 (en) | 1985-03-29 |
| DE3412150C2 (en) | 1986-01-23 |
| EP0157099A2 (en) | 1985-10-09 |
| EP0157099A3 (en) | 1987-09-30 |
| DK144385A (en) | 1985-10-01 |
| EP0157099B1 (en) | 1990-07-25 |
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