EP0958985B1 - Schaltungsanordnung zur Überwachung von Betriebskenndaten von eisenbahntechnischen Sicherheitsmeldeanlagen - Google Patents
Schaltungsanordnung zur Überwachung von Betriebskenndaten von eisenbahntechnischen Sicherheitsmeldeanlagen Download PDFInfo
- Publication number
- EP0958985B1 EP0958985B1 EP99890161A EP99890161A EP0958985B1 EP 0958985 B1 EP0958985 B1 EP 0958985B1 EP 99890161 A EP99890161 A EP 99890161A EP 99890161 A EP99890161 A EP 99890161A EP 0958985 B1 EP0958985 B1 EP 0958985B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- circuit arrangement
- circuit
- voltage
- arrangement according
- input
- 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
Links
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Images
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
- B61L1/169—Diagnosis
-
- 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
- B61L1/20—Safety arrangements for preventing or indicating malfunction of the device, e.g. by leakage current, by lightning
Definitions
- the invention relates to a circuit arrangement for Monitoring of operating characteristics of railway engineering Security alarm systems, such as Track Detection Systems, Track Circuit Relays or axle counters, with which measuring voltages tapped and evaluated via an electrical resistance become.
- Train detection systems are used to monitor railway lines, to ensure safety during the journey. in principle are two different configurations of such systems common.
- a Measuring the track circuit with such a system suitable for applications of about 1500 m monitoring distance.
- there are a number of training which the retracting and extending axles within a test track detected by axle counter.
- the test section be chosen correspondingly larger.
- axle counters When using axle counters are usually defines a plurality of points of delivery that are at least on Beginning and at the end of a defined section are located and in be evaluated in a counter located counter.
- Metering points can be obtained from wheel sensors, rail contacts and be formed an associated electronic junction box. Rail contacts may consist of transmitters and receivers, which are mounted opposite to the rail track. Training
- axle counter can also sense direction allow the signals of different points of delivery or the Reception coils of such counters in the widest possible same branches are processed.
- an overvoltage protection become known, in which to achieve a sufficient Overload protection a surge arrester as well as an or two poly-PTC current limiters and a suppressor diode provided are.
- Devices for monitoring track sections are, for example DE 36 34 696 A1, DE 44 05 039 A1, the CH 684 257 A5, DE 196 31 564 or DE 42 21 779 A1 remove.
- AT 316 644 B is a circuit arrangement in Achs vomanlagen described which the functionality of Monitors monitored and then responds when a specific Fault, such as the failure of a voltage signal occured.
- Monitoring devices of the known type usually set additional sensors and additional facilities ahead, so that besides the fact that errors are not recognized until they occur are, not only the constructive effort is increased, but also the meaningfulness of such interference signals depends on the extent of the chosen redundancy.
- the invention now aims to provide a circuit arrangement of to create the type mentioned above, with which the monitoring of operational characteristics of railway security alarm systems without compromising the safe function of conventional Security alarm systems is ensured.
- the circuit arrangement according to the invention aims it, too in case of faults and defects of the circuit arrangement impermissible Signals safe from the railway safety security system decouple, so that the proven components of railway technical Security alarm systems through the additional Monitoring device are affected in any way.
- a monitoring device thus signal-technically separate from the security alarm system must be trained, it should thus be ensured that also Defects of the monitoring device no negative effects on the security system.
- the circuit arrangement according to the invention essentially in that the circuit arrangements in each measuring line symmetrically depending on an input resistance and a suppressor diode parallel to the tap resistance or contains a bidirectional Zener diode.
- the Circuitry in each measuring line symmetrically one each Input resistance, it is first ensured that Defects or short circuits in the subsequent monitoring device only via the input resistors to the security alarm system can react, the voltage drop or the maximum current flowing through these input resistors in the Short circuit at a non-critical level for the security alarm system can be held.
- the training hiebei made so that the Abgriffswiderstand is designed as a voltage divider and in the subcircuits capacitors for the formation of amplitude limiting Has low passes.
- the use of such Capacitors for eliminating high-frequency interfering signals requires the use of low capacity capacitors ahead. Power surges become effective from bidirectional Z-diodes or suppressor diodes suppressed.
- the training is made so the circuit arrangement has an integrated galvanic isolation circuit contains.
- Such integrated isolating circuits can in a simple way as an instrument amplifier, as an isolation amplifier and be designed as a DC / DC converter, in particular the DC / DC converter part in case of a defect in the Disconnect circuit to unwanted interference voltages give rise could, which is effective from the suppressor diode or the bidirectional Z diode can be eliminated.
- a further improvement in safety can be achieved by be that the integrated isolation circuit via series resistors connected to the voltage divider and the suppressor diode is, in case of a short-term increase in current in broken Circuit parts of the monitoring device over the current these series resistors can be limited and the rest with Safety from the suppressor diode or the bidirectional Zener diode can be derived.
- a basic circuit arrangement is shown, which is designed for different voltages.
- the input terminals are designated respectively 1 and 2, wherein the input resistors are labeled R1 and R2. It is Furthermore, a voltage divider consisting of the resistors R3 and R4, which becomes effective as a pick-off resistance. Alternatively, when using other input terminals of Resistor R5 available as a pick-off resistor.
- the input circuit contains capacitors C1 and C2, which form a low-pass filter for high-frequency interference.
- Parallel to the pick-off resistance is a suppressor diode DS1 switched over which inadmissible voltages or impermissible Be derived currents.
- the signals arrive via further input resistors R6 and R7, the input terminals 3 and 4 of the integrated circuit, which causes the galvanic separation, by a spark gap FST are bridged.
- the integrated Circuit U1 will supply voltage via the pins 10, 15 supplied, wherein the supply voltage in the of the railway technical security system in galvanic isolation Part of the integrated circuit is supplied.
- the galvanic Separation is schematically indicated by GT.
- the resistors used in the voltage measuring module are Precision metal film resistors for which defined Failure characteristics are present.
- the safety construction allows, that such a resistor by interruption extremely high impedance or acts as a galvanic separation. A short circuit of such Safety resistance is excluded. While the resistance in principle due to the safety design can increase, is the reduction of the resistance value limited to a reduction of 10%.
- a break caused by R1 or R2 disconnects thatstabsmeßmodul from the safety device and it can no measured quantities are detected. An influence on the Security alarm system is not possible.
- this voltage increase causes the Response of the suppressor diode DS1, which reduces the voltage at the Input of the isolation amplifier to a harmless value limited.
- the leakage current through the suppressor diode and thus The current taken from the backup system is through the resistors R1 and R2 are limited and in the range of some Microamps. In principle, such a disturbance thus leads to Measurement of incorrect voltage measurements and thus incorrect diagnostic data but the functioning of the security system or do not impair safety in a signal-technical sense.
- a short circuit has due to the use of safety designs no probability in the range of the mentioned resistances.
- the resistors R3 and R4 do not necessarily have to be in Safety types are used as a short circuit R3 results in a change of gear ratio, and so that only the voltage at the input terminals of the IC sinks. Thus, it will be false voltage readings of Diagnostic device transmitted.
- the functioning of the security system or the safety in the signal-technical sense remains unaffected. Also an enlargement of individual resistance values leads at best to a change in the translation ratio and falsifies the measurement of the measured quantities. The safety of the system is not endangered thereby.
- the resistors R1 to R7 become cold, i. little power, operated, so that only a slight warming of the resistors occur can.
- the influence of changes and in particular enlargements the thermal resistance is thus at best by caused the ambient temperature and has due to the low negligible effects.
- the capacitors C1 and C2 form together with the input voltage part a low pass and serve to suppress unwanted Frequency components.
- An interruption of the capacitor C1 or C2 would mean an increase in cutoff frequency, which only on the filter characteristics of the input circuit of the measuring module, but does not affect the function the safety system and no danger in the signaling Meaning.
- a short circuit caused by C1 means bridging of resistance R3. In this way, although there is a slight increase in the current drawn from the object to be measured Microampere range. Influencing the function of the security system and the danger in the signal-technical sense occurs however, due to the input resistors R1 and R2 not on. The same applies to the short circuit caused by C2.
- a reduction of the capacitance C1 or C2 leads to a Changing the filter characteristics without affecting the Security Devices.
- a loose contact is caused by C1 or by C2 a corresponding temporal change of the transmission properties the input circuit, which distorts the measured value evaluation, but has no effect on the security system.
- the electronic device includes the train detection system generator modules, Bandpallonsbauitatione with power supply, trigger amplifier modules and Pulse shaper assemblies, especially with digital delay.
- Frequency generators feed the transmitter coils of the rail contact.
- the generated alternating fields are in associated receiving coils different voltages depending on the strength of the coupling induce.
- the induced voltages which amplifies and then rectified, steer respectively astable Multivibrators.
- When unused rail contacts are the both rated frequencies delivered, with the generated square voltages the applied control voltages and so with the Reception voltages are proportional. If the receiving voltage rises or falls as it passes through a wheel so increased or decreased the frequency is corresponding.
- An error in the integrated circuit will cause the input terminals of the IC to output terminals and the component itself to the generator, the voltages with arbitrary amplitudes, frequencies and generates phase angles and its signals via the passive input voltage divider in the respective signal system be fed.
- the limitation of the height of such Faulty voltage that may be caused by a faulty voltage measuring module can be fed through the spark gap, the on the board of the voltage measuring between arranged the signal input pins of the integrated component is. With a suitable design of this spark gap is thus the maximum possible voltage that a faulty voltage measuring module can generate, limits, and remains unharmed adjusted counting point without functional impairment and thus without danger in terms of signaling safety.
Landscapes
- Engineering & Computer Science (AREA)
- Automation & Control Theory (AREA)
- Mechanical Engineering (AREA)
- Health & Medical Sciences (AREA)
- Biomedical Technology (AREA)
- General Health & Medical Sciences (AREA)
- Train Traffic Observation, Control, And Security (AREA)
- Electric Propulsion And Braking For Vehicles (AREA)
- Measurement Of Resistance Or Impedance (AREA)
- Control And Safety Of Cranes (AREA)
Description
Claims (6)
- Schaltungsanordnung zur Überwachung von Betriebskenndaten von eisenbahntechnischen Sicherheitsmeldeanlagen, wie z.B. Gleisfreimeldeanlagen, Gleisstromkreisrelais oder Achszählern, mit welcher Meßspannungen über einen elektrischen Abgriffswiderstand abgegriffen und ausgewertet werden, dadurch gekennzeichnet, daß die Schaltungsanordnungen in jeder Meßleitung symmetrisch je einen Eingangswiderstand (R1,R2) und parallel zum Abgriffswiderstand eine Suppressordiode bzw. eine bidirektionale Z-Diode (DS1) enthält.
- Schaltungsanordnung nach Anspruch 1, dadurch gekennzeichnet, daß der Abgriffswiderstand als Spannungsteiler (R3,R4) ausgebildet ist und in den Teilkreisen Kondensatoren (C1,C2) zur Ausbildung von amplitudenbegrenzenden Tiefpässen aufweist.
- Schaltungsanordnung nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß die Schaltungsanordnung eine integrierte galvanische Trennschaltung (GT) enthält.
- Schaltungsanordnung nach Anspruch 1, 2 oder 3, dadurch gekennzeichnet, daß eine integrierte Trennschaltung (GT) als Instrumentenverstärker, als Isolationsverstärker und als DC/DC-Wandler ausgebildet ist.
- Schaltungsanordnung nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, daß parallel zum Eingang (3,4) der integrierten Trennschaltung (GT) eine Funkenstrecke (FST) angeordnet ist.
- Schaltungsanordnung nach einem der Ansprüche 1 bis 6, dadurch gekennzeichnet, daß die integrierte Trennschaltung (GT) über Serienwiderstände (R6,R7) mit dem Spannungsteiler (R3,R4) und der Suppressordiode (DS1) verbunden ist.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| AT99890161T ATE311320T1 (de) | 1998-05-20 | 1999-05-19 | Schaltungsanordnung zur überwachung von betriebskenndaten von eisenbahntechnischen sicherheitsmeldeanlagen |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| AT87098 | 1998-05-20 | ||
| AT0087098A AT406856B (de) | 1998-05-20 | 1998-05-20 | Schaltungsanordnung zur überwachung von betriebskenndaten von eisenbahntechnischen sicherheitsmeldeanlagen |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| EP0958985A2 EP0958985A2 (de) | 1999-11-24 |
| EP0958985A3 EP0958985A3 (de) | 2002-05-22 |
| EP0958985B1 true EP0958985B1 (de) | 2005-11-30 |
Family
ID=3501712
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP99890161A Expired - Lifetime EP0958985B1 (de) | 1998-05-20 | 1999-05-19 | Schaltungsanordnung zur Überwachung von Betriebskenndaten von eisenbahntechnischen Sicherheitsmeldeanlagen |
Country Status (3)
| Country | Link |
|---|---|
| EP (1) | EP0958985B1 (de) |
| AT (2) | AT406856B (de) |
| DE (1) | DE59912851D1 (de) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB0304633D0 (en) * | 2003-02-28 | 2003-04-02 | Cdsrail Ltd | Condition monitoring apparatus and method |
| CN103955161B (zh) * | 2014-05-14 | 2016-12-07 | 华为技术有限公司 | 一种监控电路及电子设备 |
| CN109131437B (zh) * | 2018-08-23 | 2020-12-22 | 深圳科安达电子科技股份有限公司 | 计轴轨道电路系统 |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DD212932A1 (de) * | 1982-12-20 | 1984-08-29 | Werk Signal Sicherungstech Veb | Eigensichere elektronische schaltungsanordnung zur ueberwachung einer signallampe |
| DE3442838A1 (de) * | 1984-11-23 | 1986-05-28 | Siemens AG, 1000 Berlin und 8000 München | Einrichtung zum steuern eines passiven gleismagneten |
| DE3634696A1 (de) * | 1986-10-11 | 1988-04-14 | Standard Elektrik Lorenz Ag | Einrichtung zur ueberwachung eines gleisabschnittes |
| DE3908236A1 (de) * | 1989-03-14 | 1990-09-20 | Dehn & Soehne | Ueberspannungsschutz, insbesondere ueberspannungsschutzgeraet |
| DD282300C4 (de) * | 1989-04-12 | 1991-03-14 | Veb Wasserversorgung Und Abwasserbehandlung Potsdam,De | Schaltung zum ueberwachen des betriebsstromes in stromkreisen von einphasenwechselstrom-elektroenergieverbrauchern |
| DD282299C4 (de) * | 1989-04-12 | 1991-03-14 | Veb Wasserversorgung Und Abwasserbehandlung Potsdam,De | Schaltung zum ueberwachen des betriebsstromes in stromkreisen von gleichstrom-elektroenergieverbrauchern |
| US5001587A (en) * | 1989-05-24 | 1991-03-19 | Square D Company | Protection circuit for railroad signaling high voltage surge protection circuit |
| DE4133090A1 (de) * | 1991-09-30 | 1993-04-01 | Siemens Ag | Stromversorgungseinheit |
-
1998
- 1998-05-20 AT AT0087098A patent/AT406856B/de not_active IP Right Cessation
-
1999
- 1999-05-19 AT AT99890161T patent/ATE311320T1/de not_active IP Right Cessation
- 1999-05-19 DE DE59912851T patent/DE59912851D1/de not_active Expired - Lifetime
- 1999-05-19 EP EP99890161A patent/EP0958985B1/de not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| EP0958985A2 (de) | 1999-11-24 |
| EP0958985A3 (de) | 2002-05-22 |
| DE59912851D1 (de) | 2006-01-05 |
| ATA87098A (de) | 2000-02-15 |
| ATE311320T1 (de) | 2005-12-15 |
| AT406856B (de) | 2000-10-25 |
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