EP0007022B1 - Dispositif de signalisation lumineuse utilisé dans un système d'appel d'urgence pour voies routières - Google Patents

Dispositif de signalisation lumineuse utilisé dans un système d'appel d'urgence pour voies routières Download PDF

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Publication number
EP0007022B1
EP0007022B1 EP79102047A EP79102047A EP0007022B1 EP 0007022 B1 EP0007022 B1 EP 0007022B1 EP 79102047 A EP79102047 A EP 79102047A EP 79102047 A EP79102047 A EP 79102047A EP 0007022 B1 EP0007022 B1 EP 0007022B1
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EP
European Patent Office
Prior art keywords
signal
emergency
voltage
call
light
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
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EP79102047A
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German (de)
English (en)
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EP0007022A1 (fr
Inventor
Georg Dipl.-Ing. Märkl
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Tekade Felten and Guilleaume Fernmeldeanlagen GmbH
Felten and Guilleaume Fernmeldeanlagen GmbH
Original Assignee
Tekade Felten and Guilleaume Fernmeldeanlagen GmbH
Felten and Guilleaume Fernmeldeanlagen GmbH
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    • G—PHYSICS
    • G08—SIGNALLING
    • G08G—TRAFFIC CONTROL SYSTEMS
    • G08G1/00—Traffic control systems for road vehicles
    • G08G1/09—Arrangements for giving variable traffic instructions
    • G08G1/0962—Arrangements for giving variable traffic instructions having an indicator mounted inside the vehicle, e.g. giving voice messages
    • G08G1/0967—Systems involving transmission of highway information, e.g. weather, speed limits
    • G08G1/096733—Systems involving transmission of highway information, e.g. weather, speed limits where a selection of the information might take place
    • G08G1/096741—Systems involving transmission of highway information, e.g. weather, speed limits where a selection of the information might take place where the source of the transmitted information selects which information to transmit to each vehicle
    • G—PHYSICS
    • G08—SIGNALLING
    • G08G—TRAFFIC CONTROL SYSTEMS
    • G08G1/00—Traffic control systems for road vehicles
    • G08G1/09—Arrangements for giving variable traffic instructions
    • G08G1/0962—Arrangements for giving variable traffic instructions having an indicator mounted inside the vehicle, e.g. giving voice messages
    • G08G1/0967—Systems involving transmission of highway information, e.g. weather, speed limits
    • G08G1/096766—Systems involving transmission of highway information, e.g. weather, speed limits where the system is characterised by the origin of the information transmission
    • G08G1/096775—Systems involving transmission of highway information, e.g. weather, speed limits where the system is characterised by the origin of the information transmission where the origin of the information is a central station

Definitions

  • the invention relates to a light signal device for traffic routes, in which a message cable used for emergency purposes and in the course of this cable lying call pillars are additionally utilized and which is remotely fed via the message cable from central stations.
  • AT-B-343 017 specifies an arrangement for switching a number of serially connected switching elements of a signaling device which is also suitable for arrangement on roads, in which, by activating the switching device of a switching element, at least one of the switching elements following in the row by the control device of the activated switching element to the subsequent switching element output switching signals is switchable. It is thought of, e.g. To install hazard warning flashers in the guide posts at the roadside, each guide post with a warning device having a switch-on device and e.g. in the event of an accident, the switching device of the nearest guide post can be switched on. By means of the circuit arrangement described in this publication, the warning devices of a number of guide posts in front can then be switched on. By means of a synchronizing device, it is possible to optionally switch on these warning devices simultaneously or in succession. A remote controlled activation of individual from a certain number of warning devices in a defined manner is not provided.
  • the object of the invention is to provide a device of the type mentioned at the outset which enables a locally differentiated identification of a hazard point occurring at any point with reference to its distance and thereby largely reduces the shadowing effect by trucks.
  • the probability that a car driver will not see any of the flashing emergency call pillars due to shadowing by a truck is very small, for example by the 3rd power less than with only one flashing emergency column.
  • the driver can recognize his position within the group of flashing emergency call pillars and assess his distance from the danger point, since the blinking of an emergency call pillar can tell whether he is on the first, second or third emergency column in front of the danger point. This is particularly important if a truck has previously shaded an emergency call pillar.
  • Forming a group of several flashing emergency call pillars has another advantage: the warning of a danger point and thus the request to reduce the speed is not given by the emergency call point immediately in front of the danger point, but much earlier. This enables the driver to gradually reduce his speed.
  • Each emergency call pillar can be defined by a corresponding code signal as the first, second or third emergency call pillar of a group of, for example, three flashing emergency call pillars.
  • a group of flashing emergency call pillars can be moved along the motorway in steps of approximately 2 km, depending on the distance between two emergency call pillars and the respective location of a danger point.
  • each emergency call station has several signal lamps with differently adjustable flashing types, different information can be transmitted to the driver. For example, in addition to a general hazard warning, the driver can be signaled as further information that he should leave the highway because of a traffic jam or that a vehicle is capable of driving in the wrong direction.
  • Another advantage of the invention is that the light signaling device works on pairs of conductors already used in another way, that is, it does not require any additional pairs of conductors, and that the previous speech transmission to and from the emergency call pillars is nevertheless not impaired during the blinking operation.
  • the manned central offices ZB at a distance of approximately 2 km, emergency call stations NRS 1 to 22. These are connected to the autobahn departments ZB with a continuous voice line (not shown).
  • the central stations ZB supply the emergency call pillars NRS 1 to 6 and NRS 17 to 22 assigned to the motorway maintenance authorities.
  • the emergency telephones NRS 7 to 16 are powered by an unmanned central station ZU.
  • the supply circuits of the manned central units ZB and the unmanned central unit ZU are electrically isolated from each other.
  • Two pairs of conductors are used to power existing devices. One pair of conductors supplies the outside lighting of the NRS emergency telephones with alternating current. The other pair of conductors is used to supply AC power to an illuminated kilometer reading inside the funnel of the NRS emergency telephones. These two pairs of conductors are shown together in FIG. 1.
  • the emergency call pillars of the two directions of travel are also shown together.
  • NRS 4 that at this point an emergency call column is arranged in the direction of travel A-B and in the direction of travel B-A.
  • the emergency call pillars in both directions are connected to a common cable, a so-called bus line. This cable is only laid on one side of the highway.
  • the emergency telephones on the opposite side are connected to this cable by spur lines.
  • a manned central point ZB contains a remote feed device FE with a voltage selector SW and a transformer U1.
  • the center-grounded secondary winding of the transformer U1 is connected to the main lines St1 and St2 via the center tap of two chokes Dr1, which form the phantom circuit.
  • the decoupling from the phantom circuit takes place via similar tapped throttles Dr2.
  • the above-mentioned alternating voltages for the exterior lighting or the lighting of the mileage are connected to the main lines St1 and St2 via the transformers U2, U3 already used.
  • the formation of the described phantom circuit does not require a separation of the master lines St1 and St2.
  • the phantom circuit not only provides the AC signal for the light signal device, but also transmits code signals from the central points to the emergency call stations.
  • the code signals consist of a series of alternating current pulses with different voltage values.
  • the output a1 of the signal generator SG in FIG. 2 controls the voltage selector SW in accordance with the code signal to be transmitted. This connects a connection point L, H or D of the primary winding of the transformer U1 to the AC network N.
  • the winding part between the connection points D and A of the primary winding of the transformer U1 is designed for the nominal value of the mains voltage, for example 220 V.
  • the voltage at the phantom circuit is correspondingly lower. Due to the center grounding of the secondary winding of the transformer U1, the voltage prevailing between the master lines St1 and St2 is halved compared to the earth potential and thus also the hazardous voltage to persons.
  • the code signals are decoupled via the chokes Dr2 and evaluated in the emergency call pillars NRS.
  • the output a2 of the signal generator SG is used to control emergency call pillars via unmanned central stations, which is explained in connection with FIG. 4.
  • a phantom coupling and decoupling which blocks direct current, is provided for the trunk line St2.
  • 3 shows an exemplary embodiment of this.
  • the choke Dr1 of FIG. 2 is supplemented by two chokes Dr3 and two capacitors C.
  • the DC blocking is carried out by the capacitors C.
  • Two capacitors C are required for reasons of symmetry.
  • the two capacitors C are each supplemented by a choke Dr3 to form series resonance circuits, the resonance frequency of which is equal to the frequency of the remote feed current, in particular 50 Hz.
  • the decoupling on the emergency call pillars takes place via an analog circuit.
  • the emergency call pillars between two manned central points ZB belong to different, galvanically isolated dining areas, which are fed from a manned or unmanned central point ZB or ZU. If the phantom circle is formed from the stems St1 and St2 (cf. FIG. 2), via which the emergency pillar exterior lighting and the illumination of the mileage are fed, there are two separate phantom circles corresponding to these different dining areas. Then an emergency call column in the area of an unmanned central station ZU cannot be controlled directly from a manned central station ZB, but must be controlled via the relevant unmanned central station ZU.
  • Fig. 4 shows an embodiment for the control of an emergency column via an unmanned central station ZU.
  • the unmanned central unit ZU is connected to the AC network N like the manned central unit ZB and has the same remote feed device FE as this.
  • the signal generator SG sends signals S to its output a2. These are fed to a data transmitter DS and brought into a form suitable for data transmission.
  • the data is transmitted to the unmanned central station ZU on the continuous voice line SLt. There they are optionally amplified in an amplifier V and converted into the original output signals of the signal generator SG in a data receiver DE.
  • These recovered signals S control the output voltage of the remote feed device FE in the same way as in the manned central point (cf. FIG. 2).
  • the controlled output voltage is given in the unmanned central station ZU as a code signal KS via the phantom coupling Ph1 to the phantom line PhL, coupled out via the phantom coupling Ph2 and evaluated, for example, in the emergency call station NRS 7.
  • the phantom or coupling Ph1 or Ph2 is designed according to FIG. 2 or 3.
  • the signal generator output a1 is used to control the emergency call columns with code signals KS from the manned central point ZB, which was explained in connection with FIG. 2.
  • the signal generator SG can be constructed in such a way that the signal intended for it is automatically assigned to the corresponding output a1 or a2 depending on the area belonging to an emergency call column.
  • each emergency call pillar NRS (cf. FIG. 7). These are part of the signal lamps SL1 to SL4 (see FIG. 5). All signal lamps are located close to the head part KT of the emergency column. This avoids large leverage effects in strong winds. 5, in the angular receiving part At for the signal lamps or by displacing this receiving part with respect to the head part KT, lateral closure covers of the head part can still be kept free and accessible.
  • the receiving part At is fastened to the emergency pillar head part by brackets Ha.
  • NRSI is the group's first emergency number
  • NRSII is the second
  • NRSIII is the third number in the group. The point in time when a signal lamp lights up in relation to the time axis t is identified by a dot.
  • FIG. 6a shows an example of a warning of a danger point.
  • NRSI only signal lamp 1 flashes.
  • NRSII signal lamps 1 and 3 flash in succession.
  • NRSIII signal lamps 1, 2 and 3 flash in succession.
  • Fig. 6d which shows the flashing of NRSIII, this is symbolized by the arrow t.
  • the signal lamp that lights up is shown by a filled circle.
  • FIG. 6c shows an exemplary embodiment for further information for the road users. Shown is the signaling of the request “leave the highway” by the NRSII 'and NRSIII'. The flashing rhythm of NRSI remains unchanged: signal lamp 1 flashes. With NRSII ', signal lamps 3 and 4 flash and with NRSIII' signal lamps 3, 1 and 4 one after the other. In Fig. 6e the blinking of NRSIII 'is symbolized by the arrow t.
  • 6d and 6e show the clear difference between the two pieces of information and their suggestive effect.
  • the number of active signal lamps correspond to the respective ordinal number of an emergency call pillar, but also their blinking frequency: the number of light flashes between the respective breaks P1, P2 and P3 (see Fig. 6a) also corresponds to the ordinal number of an emergency call pillar.
  • FIG. 6b This is illustrated in FIG. 6b, in that only the temporal grouping of the flash sequence is shown and highlighted by brackets. This time grouping is also highlighted in brackets in FIGS. 6a and 6c.
  • the corresponding emergency call stations are switched to flashing either in only one direction of travel or in both directions of travel.
  • the danger point G denotes a fog route
  • the emergency call pillars 5 to 7 in the direction of travel A-B and the emergency call pillars 10 to 8 in the direction of travel B-A are switched to flashing. Since each emergency call pillar, as will be shown, is selectively controlled by an address signal, it is possible to activate the emergency call pillars regardless of the direction of travel, although the emergency call pillars of both directions are connected to a common cable.
  • FIG. 7 shows an exemplary embodiment for the generation of a desired flash sequence in an emergency call column.
  • the code signals sent from a central station and transmitted via the stems St1 and St2 are fed to the emergency call pillars via the phantom coupling Ph2 to a transmitter U4 with several secondary windings s, z, b-.
  • the voltage tapped at secondary winding s is rectified in a rectifier and charging device GLE and fed as code signal voltage Us to a signal device SE and evaluated there.
  • a power supply capacitor Cv (cf. FIG. 10) is charged in the rectifier and charging device GLE by the code signals transmitted with high energy. Its voltage is used to power various electronic circuits; this is indicated by the voltage arrow Uv.
  • An exemplary embodiment of the rectifier and charging device GLE and details of the derivation of the voltages Ub, Uz, Us and Uv are explained with reference to FIG. 10.
  • the following type signal at the output of the signaling device SE provides corresponding information which specifies the type of blinking.
  • the signaling device SE in FIG. 7 contains a commercially available series-parallel converter, which converts the series information arriving at the input of the pulses arriving one after the other into parallel information at the output; this is indicated by a multi-core connection line to a distributor Vt in a lightning sequence circuit Bfs.
  • the parallel information at the output of the signaling device SE controls the distributor Vt of the lightning sequence circuit Bfs in the flashing device BE in such a way that the switching points 1 '... 4' correspond to the type code with the switching points 1 ... 4 get connected.
  • the switching state that arises is saved. After the code signals have been transmitted, flashing begins.
  • the power supply capacitor Cv is constantly recharged in order to maintain the power supply voltage Uv.
  • the energy required for the flashing operation is also transmitted via the phantom circuit on the stems St1 and St2.
  • the voltage supplied is stepped up in the secondary winding b of the transformer U4, rectified in the rectifier and charging device GLE and fed as a flash voltage Ub to the flash tubes BR1 ..4 in the flash device BE.
  • the flash voltage Ub is smoothed by the charging capacitor Cb.
  • the diode D prevents the energy of the charging capacitor Cb from flowing back.
  • the unsmoothed lightning voltage Ub is also supplied to the signaling device SE. Their use there will be explained with reference to FIG. 13.
  • the flash sequence circuit Bfs has a clock switch T, which is controlled by a counter ZG. 50 Hz half-waves, e.g. B. the supply voltage for the emergency pillar exterior lighting or for lighting the mileage.
  • the counter ZG switches the clock switch T cyclically step by step after a predetermined number of half-waves.
  • the ignition voltage Uz formed in the rectifier and charging device GLE via the secondary winding z is cyclically switched through to one of the switching points 1 '... 4'.
  • the ignition voltage Uz is applied in succession to ignition transmitters Ü5.1 ... U5.4.
  • a glow lamp and a flash tube with auxiliary electrode are assigned to each of these ignition transmitters.
  • the ignition voltage Uz is applied to the ignition transformer Ü5.1, the glow lamp Gi1 ignites and in a known manner, via the high-voltage winding of the ignition transformer Ü5.1 and the auxiliary electrode HI, together with the flash voltage Ub, ignites the flash tube BR1.
  • the ignition of the other flash tubes is carried out analogously.
  • the ignition can be triggered from a central point by pulse-like increase or decrease or interruption of the remote supply voltage for the blinking operation in connection with voltage-evaluating circuits in the emergency call pillars.
  • the externally triggered ignition trigger has the advantage that the ignition of the various flash tubes within a group of flashing emergency call pillars is ensured at the specified times, which is not the case with charge-dependent ignition triggering, because a group of flashing emergency call pillars represents a complex charging system with several charging capacitors and different distance-dependent line resistances, the size of which also changes from case to case. Equalization and supplementary resistors can be used to largely align the individual charging time constants, but they can never be made absolutely identical. Therefore, in the case of charge-dependent triggering of the trigger, the charging capacitor with the smallest time constant would always trigger the ignition of the associated flash tube before the other flash tubes ignite. Its recharging would prevent the further charging of the other capacitors or delay them inadmissibly.
  • the charge-independent ignition trigger not only ensures that the blinking rhythm of each emergency call pillar, when viewed individually, corresponds to a fixed, specified time grid, but also prevents the ignition times of the different emergency call pillars from shifting against each other.
  • the ignition times are thus fixed after a phase-locked time grid.
  • a temporal mutual shift of the ignition times would periodically change the charging processes in the charging network and would mean that capacitors were temporarily no longer sufficiently charged.
  • the switching contacts a to i and the clock switch T are shown as mechanically operated contacts and switches for easier illustration. Of course, they can be implemented using electronic, integrated circuits.
  • the ignition voltage Uz is cyclically switched through to the switching points 1 '... 4' by the clock switch T controlled by the counter ZG.
  • the switching contacts a ... i are activated and closed according to the respective type signal by the signaling device SE in accordance with the table in FIG. 9. Closed contacts are marked with a dot.
  • the closed contacts switch the ignition voltage Uz through to the corresponding switching points 1 ... 4.
  • the signal lamps light up in rhythm according to Fig. 6a or 6c
  • FIG. 10 shows an exemplary embodiment for the generation of the voltages Ub, Uz, Us and Uv shown in FIG. 7.
  • the AC voltage U decoupled from the phantom circuit is raised in the secondary winding b of the transformer U4 directly to the value required for the flash tubes, fed to a full-wave rectifier Gb of the rectifier and charging device GLE and output as rectified, still unscreened voltage Ub.
  • the usual voltage stabilization which is primarily used to keep the flash sequence frequency constant, is not necessary since, as already mentioned, the ignition is triggered independently of the charge state of the charging capacitor Cb (cf. FIG. 7).
  • the capacitor Cz is charged with the voltage taken from the transformer winding z via a diode D9.
  • a low voltage is tapped from the transformer winding s and rectified in a rectifier Gv.
  • the power supply capacitor Cv is charged via the diode D11 and resistor R11 with the rectified voltage.
  • the code signals are also taken from the winding s and, after rectification in the rectifier Gv, are fed to the signal device SE for evaluation as a code signal voltage Us. Since the code signal transmission works with two different voltage values and the power supply capacitor Cv is recharged during the code signal transmission, the voltage at Cv is stabilized by a Zener diode Z11. The diode D11 prevents the charge from Cv from reaching signal-evaluating parts of the signaling device SE. The resistor R11 is used for decoupling.
  • the circuits fed with the supply voltage Uv are integrated circuits, so that their power consumption is very low compared to the flash tubes.
  • the Voltage transformation convert the 50 Hz alternating current into a current of higher frequency in a known manner via several intermediate stages (rectifier, oscillation stage, amplifier), so that a smaller transformer with a possibly better efficiency can be used.
  • this possibly better efficiency is offset by additional energy consumption by the intermediate stages.
  • transistors with a higher operating voltage are required, since the 50 Hz AC voltage supplied is higher than is customary for electronic circuits. Such transistors are more expensive and have less safety reserves;
  • the additional intermediate stages also contain such transistors and thus additionally reduce the reliability of the overall device.
  • FIG. 11 shows the example of a sequence of 50 Hz alternating current pulses transmitted in the phantom circuit for activating an emergency call pillar in its time profile t.
  • the alternating current is represented by the hatching within the pulses.
  • a charging pulse II has a longer duration than subsequent signal pulses Is of the code signal KS.
  • the charging pulse II is used to charge the power supply capacitor Cv (see FIG. 10), which feeds the electronic devices of the light signal device.
  • the code signals KS consist of alternating current pulses and are binary coded.
  • the voltage criterion is used exclusively among the various possibilities for forming the two binary states.
  • the lower voltage UI embodies the binary state zero.
  • the higher voltage Uh embodies the binary state L.
  • These voltages are present over several alternating current periods.
  • the duration of the individual signal pulses Is is not tied to any clock criteria. They can be of different lengths. Compared to the formation of the two binary states, this has a time criterion - e.g. B. pulse length coding - the advantage that the pulse transmission is independent of the transient response of the transmission path, which can falsify the beginning and end of a signal pulse Is.
  • the voltage used here is equal to the voltage Uh.
  • FIG. 12 shows a simplified, unipolar representation of a pulse example for a group of five code signals KS, which are assigned to an emergency call pillar.
  • a group of five code signals KS corresponds to the five different flashing cards according to FIGS. 6 and 9 (NRSI, II and 111. and NRSII 'and III').
  • the code signals KS consist of an address signal AS and a type signal TS.
  • the address signal AS is different for each emergency column.
  • the address signal AS comprises 5 bits.
  • the type signal TS specifies the number of signal lamps that are activated by the lightning sequence and their switch-on sequence and thus the position of the emergency call columns within a group of flashing emergency call columns as well as the type of information.
  • the type signal TS consists of 3 bits.
  • the properties of a binary code are optimally used. In this case, however, no transmission redundancy is possible, which may be desirable in the interest of a low transmission error probability.
  • FIG. 13 shows a circuit example for the evaluation of the code signals KS by the signal device SE in an emergency call column.
  • the derivation of the code signal voltage Us as well as the lightning voltage Ub and the power supply voltage Uv has already been explained with reference to FIG. 10.
  • the code signal voltage Us assumes the special values Uh 'or UI' during the signal transmission. These values are adapted to the usual voltage values for electronic circuits and are therefore lower than the voltage values Uh or Ul transmitted on the phantom line.
  • the voltage Us is supplied via diodes D12 and D13 and resistors R12 and R13 capacitors Cr and Cs.
  • the diodes D12 and D13 prevent the charges of the capacitors Cr and Cs from equalizing or flowing back into the rectifier and charging device GLE (cf. FIG. 10).
  • the resistors R12 and R13 prevent a capacitor from short-circuiting the voltage Us at the start of its charging and thus partially charging the charging process of others whose capacitors are interrupted.
  • the resistors are also used to set the charging time constants of different sizes for the capacitors Cr and Cs.
  • the capacitors Cr and Cs are charged to the voltage value Uh '.
  • the half-waves of the high DC voltage Ub occurring during this pulse are limited by an amplitude limiter Ab to a low value Uh ", which is somewhat greater than Uh '.
  • the limited voltage Uh” only drops below the value Uh "for a fraction of a half-wave duration ( 14, curve a)
  • These voltage drops are bridged by a capacitor Ck.
  • the charge and discharge time constants of the capacitor Ck are dimensioned such that it is charged or discharged at the latest after a half-wave (FIG. 4, curve b)
  • the voltage of the capacitor Ck is at a resistor R15 and at the base of transistors T1 and T2.
  • the capacitors Cr and Cs which are at the emitter of the transistor T1 and T2, have a greater charging time constant than the capacitor Ck Voltage at the bases of the transistors the value Uh "before the voltage at the emitters reaches the somewhat smaller value Uh '.
  • the transistors T1 and T2 block.
  • the charging current surge when charging the capacitor Ck via the amplitude limiter Ab creates a positive voltage pulse across a resistor R16. This pulse is applied to the quiescent input of a bistable multivibrator K via a diode D14. If this flip-flop is not in the rest position, it is switched to its rest position. If it is already at rest, it does not respond to this impulse.
  • the capacitors Cr and Cs are charged by several half-waves.
  • the voltage Uh 'that arises at them is greater than the breakdown voltage of threshold switches SW1 and SW2.
  • This breakdown voltage lies between the voltage values Uh 'and Ul'.
  • the threshold switch SW2 which is at the set input of the multivibrator K, switches through. This sets the binary state L at the working output of the flip-flop. This is located at the input of a series parallel converter SP.
  • the transistor T1 is still off, so that the voltage Uh 'present at the capacitor Cr does not reach the threshold switch SW1.
  • the voltage Uh "present at the resistor R15 keeps the transistors T1 and T2 in the blocking state.
  • the capacitor Ck discharges within a half-wave duration via the resistors R15 and R16.
  • the negative that occurs at the resistor R16 Voltage pulse is blocked by the diode D14
  • the discharge time constant is only slightly larger than the charge time constant, since the resistor R15 is small in comparison to the resistor R 16.
  • the resistor R15 does not reach the bases of the transistors T1 and These are switched through by the voltage Uh 'applied to the capacitors Cr and C.
  • the transistor T2 causes the discharge current of the capacitor Cs to generate a pulse pulse at a collector resistor R17 which is fed to the series-parallel converter SP
  • Binary state L present at the input of the series-parallel converter SP is sampled
  • Series-parallel converter SP is designed so that the binary state pending at its input is only evaluated by the pulse It.
  • Such series-parallel converters SP are known.
  • the capacitor Cr is discharged via the connected transistor T1 and the series circuit comprising a resistor R14 and a small inductance L.
  • the discharge current surge is slightly delayed by the inductance.
  • the time constant of the series connection is small compared to the discharge time constant of the RC element Cr, R14.
  • the voltage of the delayed pulse occurring at the resistor R14 is therefore only insignificantly less than the voltage Uh '.
  • the threshold switch SW1 is switched through by the pulse delayed compared to the pulse It.
  • the pulse is supplied as a reset pulse Ir to the series-parallel converter SP and the flash sequence circuit Bfs in the flash unit BE. As a result, both are brought into their starting position and ready for the immediately following code signal transmission.
  • the previously sampled binary state L and random switching states which may have arisen due to induced interference voltages when the device has not been used for a long time are thus erased by the reset pulse Ir.
  • the capacitor Cs is charged and discharged several times to the voltage Uh 'or UI'. Due to the charging current surge of the capacitor Ck at the beginning of each signal pulse Is, the flip-flop K is brought into the rest position in the manner described.
  • the blocking of the transistors T1 and T2 at the beginning of each signal pulse and their switching on after the end of the respective signal pulse and the associated generation of the pulse is done analogously to pulse II.
  • the transistors are blocked regardless of whether the voltage UI or Uh is present on the primary winding of the transformer, because the voltage value Uh "occurring after the amplitude limiter Ab is independent of which of the two voltages is present on the transformer.
  • the signal pulses Is are shorter than the previous charging pulse II and only last until the capacitor Cs is charged to the voltage Uh 'or U1'. Therefore, the charging voltage of the capacitor Cr remains noticeably lower than Uh 'or Ul' at the end of a signal pulse, since the charging time constant of Cr is noticeably larger is dimensioned as that of the capacitor Cs. The lower voltage across the capacitor Cr is not sufficient to break the threshold switch SW1 when the transistor T1 is turned on. The signal pulses therefore do not trigger a reset pulse Ir.
  • the discharge time constant of the capacitor Cr - including the delay caused by the inductance L - is markedly smaller than its charge time constant, so that its voltage always remains below the breakdown voltage of the threshold switch SW1, even if only signal pulses of the voltage Uh are transmitted.
  • the code signal voltage Us supplied to the signaling device SE is not smoothed, since the voltage changes between Uh 'and UI' and the pulse gap RZ would be covered by a filter capacitor.
  • the voltage Us periodically drops to zero in the cycle of the half-waves. Therefore, the voltage that arises across capacitor Cs does not rise monotonously during charging due to several half-waves, but is overlaid with a more or less pronounced voltage-wave line.
  • the voltage threshold of the threshold switch SW2 is broken several times until the final charge state is reached.
  • the flip-flop K If a signal pulse Is is transmitted with the voltage Uh, the flip-flop K generates the pearly state L at the input of the series-parallel converter SP. This is evaluated in the same way as after the charging pulse 11 during the subsequent pulse gap RZ by the pulse pulse It, thus only when the capacitor Cs has reached the stable final charge state.
  • the parallel outputs are provided via a corresponding multi-core control line of the lightning sequence circuit Bfs, a 3-bit sequence can be evaluated.
  • the series-parallel converter SP is constructed in such a way that the output information with which it controls the flash sequence circuit in the flash device is only present if the corresponding previous address signal AS. In this way, control processes are only triggered in the emergency call pillars to be activated. The performance required for this is therefore limited to these emergency pillars, in the example to three emergency pillars.
  • Such series-parallel converters are known on the market as integrated circuits.
  • the charging time constants T of the capacitors Cr and Cs are dimensioned such that their charging time with respect to the pulses 11 and ls is at least 5T, so that these capacitors always reach their final charge state. Therefore, the voltage across these capacitors in all emergency telephones, regardless of the respective line resistance, always reaches the value of the voltage applied in the feeding central stations.
  • the different line lengths between the central stations and the individual emergency call pillars thus have no influence on the signal evaluation by the threshold switches SW1 and SW2 with predetermined voltage thresholds in the signaling device SE.
  • switching means which are controlled by one of the devices described, in parallel to the contacts which are actuated by lifting the speech flap and which trigger the transmission of an identifier in accordance with German patent specification 2,251,400 and trigger the same switching functions as lifting the speech flap.
  • This can e.g. B. by the flash sequence Bfs, after which the switching state caused by the signaling device SE has been stored in the flash sequence circuit Bfs.
  • the switching means In order not to block the functions triggered when the speech flap is actually lifted, provision can be made for the switching means to be switched to a switching state which is equivalent to a raised speech flap only for a very short time. Since the activation of the emergency call stations is carried out by code signals transmitted one after the other, it is possible to carry out the corresponding feedback in a staggered manner and to separate them.

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Atmospheric Sciences (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Audible And Visible Signals (AREA)
  • Alarm Systems (AREA)

Claims (10)

1. Installation de signalisation lumineuse pour voies de circulation dans laquelle sont utilisés, en outre, un câble de télécommunication servant à des appels de détresse et des bornes d'appel de détresse (NRS) situées sur le trajet de ce câble, installation alimentée à distance par des postes centraux (ZB, ZU) en passant par le câble de télécommunication et caractérisée en ce que sur chaque borne d'appel de détresse (NRS) sont disposées plusieurs lampes de signalisation (SL) pouvant être branchées séparément, en ce que les différentes bornes d'appel de détresse faisant partie d'une pluralité de bornes d'appel de détresse, qui se succèdent quant à leur emplacement et formant un groupe peuvent être adressées sélectivement par un poste central (ZB ou ZU) grâce à des signaux codés (KS), et en ce que l'adressage sélectif des bornes d'appel de détresse déclenche un branchement tel d'une ou de plusieurs de leurs lampes de signalisation que les lampes de signalisation des différentes bornes d'appel de détresse d'un groupe clignotent avec un mode de clignotement différent d'une borne d'appel de détresse à une autre borne d'appel de détresse.
2. Installation de signalisation lumineuse selon la revendication 1, caractérisée en ce que la transmission des signaux codés (KS) et l'alimentation à distance de l'installation de signalisation lumineuse s'effectuent par l'intermédiaire d'un circuit fantôme commun (St1, St2).
3. Installation de signalisation lumineuse selon l'une des revendications précédentes, caractérisée en ce qu'aussi bien pour la transmission de signaux codés que pour l'alimentation à distance de l'installation de signalisation lumineuse, on utilise le courant alternativ, en particulier un courant alternatif de 50 Hz, et la tension des signaux codés (KS) et la tension d'alimentation à distance se situent dans le même ordre de grandeur.
4. Installation de signalisation lumineuse selon l'une des revendications précédentes, caractérisée en ce que le signal codé (KS) est formé d'impulsions de courant alternatif ayant deux valeurs de tension différentes (Uh, UI) et qu'entre les différentes impulsions de courant alternatif, la tension alternative est supprimée et amenée à la valeur zéro.
5. Installation de signalisation lumineuse selon l'une des revendications précédentes, caractérisée en ce que les signaux codés (KS) sont précédés d'une impulsion de charge (II) servant à charger un accumulateur d'énergie (Cv), qui fournit une tension d'alimentation (Uv) pour les dispositifs électroniques placés dans les bornes d'appel de détresse (NRS) et en ce que l'énergie des signaux codés (KS) est utilisée pour la charge complémentaire de cet accumulateur d'énergie (Cv).
6. Installation de signalisation lumineuse selon l'une des revendications précédentes, caractérisée en ce que le signal codé (KS) se compose d'un signal d'adresse (AS) servant à adresser une borne d'appel de détresse (NRS) déterminée et d'un signal de type (TS) servant à définir le mode de clignotement de cette borne d'appel de détresse.
7. Installation de signalisation lumineuse selon la revendication 6, caractérisée en ce que le signal de type (TS) commande, par l'intermédiaire de la sortie d'un dispositif de signalisation (SE), un dispositif de commutation (Bfs) servant à définir et à mémoriser la succession d'éclairs.
8. Installation de signalisation lumineuse selon l'une des revendications précédentes, caractérisée en ce que pour la transmission des signaux codés (KS) à des bornes d'appel de détresse (NRS) qui sont adjointes à un poste central dépourvu de personnel (ZU), dans les postés centraux pourvus de personnel (ZB), des signaux (S) d'un transmetteur de signaux (SG) sont convertis à une forme convenant à la transmission de données sur une ligne téléphonique (SLt) et sont transmis, sur celle-ci, au poste central dépourvu de personnel (ZU) où ils sont convertis en leurs signaux primitifs (S), à partir desquels, de la même façon que dans les postes centraux pourvus de personnel (ZB), des signaux codés (KS) sont formés et sont transmis aux bornes d'appel de détresse (NRS) qui sont adjointes aux postes centraux dépourvus de personnel (ZU).
9. Installation de signalisation lumineuse selon l'une des revendications précédentes, caractérisée en ce que l'on peut adresser au choix les bornes d'appel de détresse (NRS) d'un seul sens de marche (A-B ou B-A) ou des deux sens de marche.
10. Installation de signalisation lumineuse selon l'une des revendications 6 ou 7, caractérisée en ce que dans un dispositif de signalisation ou dans le dispositif de signalisation (SE) est prévu un convertisseur série-parallèle (SP) qui libère seulement l'adressage du dispositif de commutation (Bfs) lorsqu'il y a concordance du signal d'adresse (AS) avec l'adresse de la colonne d'appel de détresse (NRS) considérée.
EP79102047A 1978-07-08 1979-06-21 Dispositif de signalisation lumineuse utilisé dans un système d'appel d'urgence pour voies routières Expired EP0007022B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE2830063 1978-07-08
DE19782830063 DE2830063A1 (de) 1978-07-08 1978-07-08 Lichtsignaleinrichtung

Publications (2)

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EP0007022A1 EP0007022A1 (fr) 1980-01-23
EP0007022B1 true EP0007022B1 (fr) 1982-03-03

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EP79102047A Expired EP0007022B1 (fr) 1978-07-08 1979-06-21 Dispositif de signalisation lumineuse utilisé dans un système d'appel d'urgence pour voies routières

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EP (1) EP0007022B1 (fr)
AT (1) AT374022B (fr)
DE (2) DE2830063A1 (fr)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT1201047B (it) * 1983-05-17 1989-01-27 Nunzio Giuseppe Di Sistema di segnalazione a distanza luminosa e o acustica in successione contunua lungo i margini stradali di incidenti o ingombri stradali e impianto di attuazione di detto sistema

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH482254A (de) * 1968-07-17 1969-11-30 Zellweger Uster Ag Verfahren und Vorrichtung zur optischen Signalisierung längs Verkehrswegen
AT343017B (de) * 1973-06-22 1978-05-10 Titus Ing Schwanda Anordnung zum schalten einer anzahl seriell verbundener schaltglieder einer reihe

Also Published As

Publication number Publication date
DE2962229D1 (en) 1982-04-01
DE2830063A1 (de) 1980-01-17
ATA784278A (de) 1983-07-15
EP0007022A1 (fr) 1980-01-23
AT374022B (de) 1984-03-12

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