FR2505532A1 - INDICATOR SYSTEM FOR PUBLIC TRANSPORT - Google Patents

Abstract

THE SUBJECT OF THE PRESENT INVENTION IS AN INDICATOR SYSTEM FOR PUBLIC TRANSPORT, CHARACTERIZED BY THE FACT THAT IT CONTAINS TABLES 1A, 1B, 2A AND 2B AS INDICATOR TABLES, WITH A LIQUID CRYSTAL DISPLAY DEVICE ARRANGED IN MATRICES.

Description

INDICATOR SYSTEM FOR PUBLIC TRANSPORT

  The present invention relates to an indicator system intended for public transport In trains and public transport vehicles, there is generally placed at the front an indicator table which indicates the line number and the destination, for example the terminus A similar board is usually found at the rear of the vehicle or train, while on the side, in the precise location o

  there are travelers who want to go up, there is generally

  Really no indicator tables The tables indicate

  teurs, in particular on old vehicles, are most often tables that the driver slips into pockets provided for this purpose; this work must be carried out each time the direction of the journey or destination is changed Changing several tables of this kind takes time, which could be the reason why so far the number of

  scoreboards is minimized.

  In another known indicator system, the inscriptions are on a wide strip of paper which is unwound from a roll and wound on another roll by means of a crank mechanism. Again, the change takes a long time and is difficult. The two known systems have the disadvantage of not ensuring the concordance of the different scoreboards of the same vehicle or train. In stations, it is often used scoreboards with electronic control which change like the pages of a book, but it again it takes a long time to find the new indication, and faults in the

  mechanics can also cause errors of indication.

  The object of the invention is to allow rapid and easy production of the desired indication and, even in the case

  a large number of scoreboards, to ensure the ident-

of their indications.

  The invention achieves this goal by using crystal display device tables as indicator tables.

  liquids arranged in matrices Liquid crystal display

  which arranged in matrices is already used for watches and other small indicating devices Studies have shown that displays with numbers or letters about 150 mm high are possible by the same system To represent all numbers and letters so that they are easy to read, just a matrix

  of 5 X 7 points, each point having approximately 20 X 20 mm.

  According to the invention, the screen display device

  liquid rate is controlled by a programmable memory of

  sufficient capacity to hold all lines and desti-

  nations The extraction of selected data from memory for the realization of a determined display on the liquid crystal display device can then be done by means of a microprocessor of known type. Thus, a simple press of a key ensures the simultaneous appearance on all indicator panels of the indication called from the program, so that the driver of the car no longer has

  to change several tables one after the other.

  The invention gives the possibility of placing an indicator board controlled by the same memory inside the vehicle, so that travelers who are in the vehicle can ensure that they have taken the right vehicle. inside the vehicle can also be used to visually indicate the next stop or the next station, whereas until now, in these vehicles, the next stop, in general, was only announced orally; however, apart from the fact that the announcements are often difficult to understand, foreigners who do not have or have a poor knowledge of the local language often do not know when they arrive at their station With the invention, these foreigners can read the inscription which appears on the scoreboard, because they generally noted the station where it

have to go down.

  This indication of the next stop or the next

  station can also be stored, so that a press-

  a single key is enough to produce the change of indicator

  This change can also be made automatically, preferably after closing the doors and following a certain distance, for example 100 m, or after

  certain time, for example 10 s Thus, the display of the pro-

  chain stop is not forgotten and is always done shortly after

departure from the previous stop.

  In addition, to exclude any errors, at the

  pick can, according to the invention, be placed a table indicating

  additional smaller counter, ordered at the same time as the others so that the driver can always make sure that the correct indication, that is to say the one he wants, has appeared on the indicator boards located outside and

  inside the vehicle The invention also gives the possibility of

  bility to install in addition to the driving position a small screen

  write write so that the driver can display on

  indication tables which are not pre-

  views in memory, for example in case of services or tra

  special jets or disturbances that require deviations

  tions. An exemplary embodiment of the indicator system of the invention is shown in the accompanying drawings in which:

  Fig 1 is a schematic section of a bus

pe of an indicator system.

  Fig 2 is a vertical section of a table showing

two lines.

  Fig 3 shows a 5 X 7 point matrix.

  Fig 4 is a block diagram of the indicator system

  tor with its control device.

  At the front of the vehicle, for example a bus, shown

  shown schematically in fig 1 is a table on which are indicated in the line number and in 2 at the destination, for example the terminus A similar table is on the right side of the vehicle It is indicated in lb

  the line number and in 2 b the destination.

  At the rear of the vehicle, it is usually enough to

  smaller table 3 on which only the number is indicated

  line marker Inside the vehicle there is an additional table 4 on which the next stop is displayed. This table can also be used to communicate other information to travelers.

  and 2 a or lb and 2 b can also appear inside, vi-

  passenger seats in the vehicle At the driving position there is a command and control device 5 which comprises on the one hand the keys by means of which the driver calls from the memory the data he wishes and

  on the other hand, a smaller indicator table on which

  appears the same text as on the large tables la, 2 a, and

lb, 2 b.

  The two-part table shown in Fig 2 consists of a frame 7 in which is mounted in the middle a printed circuit 8 The actual indicator table 10 is mounted on this circuit by means of sockets 9 This table includes for each character a 5 X 7 point matrix

  as shown in fig 3 As shown

  chage by liquid crystals is not luminescent, but repo-

  is on the dark coloration of the points of the matrix, it is clearly visible by good lighting, that is to say in daylight In case of bad lighting, that is to say at dusk and in the darkness, lighting of the scoreboard by

lamps 11 is required.

  Fig 4 is a block diagram of the entire

indicator system.

  The general control is done by a microprocessor of known type, for example a card p P 8085 One can use

  as memory any known permanent programmable memory.

  Thus, for example, an EPROM 2716 contains 128 words of 16 characters On a card can be saved captively 24 X 128 = 3072 words of 16 characters This number

  should, even in the case of larger trans-

  urban ports, sufficient to record the numbers of the li-

  bus genes, destinations and different stops and call them manually from memory by means of the command and control device located at the driving position As shown in fig 4, the desired indication is entered on the tester 5 by pressing keys after

  which the microprocessor 12 extracts the corresponding data

  tes from memory 14 and sends the correct control signals

  corresponding to the various indicator tables la, lb, 2 a,

2b, 3, 4 above.

  In addition, to the microprocessor 12 can be connected a

  control device 13 connected to the vehicle door contact

  cule, which can trigger a change of indication either immediately after the door is closed, or for a while

  after this or after a certain distance has been

ran.

Claims (2)

  1 Indicator system for public transport,   characterized by the fact that it includes, as indicator tables, tables (10) with display device with   liquid crystals arranged in matrices.   2 indicator system according to claim 1, ca-   characterized by the fact that the display device   liquid rate (10) is controlled by a programmable memory (14).   3 indicator system according to claim 2, ca-   characterized by the fact that the control of the programmed memory   table (14) and the sending of data to the indicator tables (la, lb, 2 a, 2 b, 3, 4) are ensured by a microprocessor (12).   4 indicator system according to one of claims   2 and 3, characterized by the fact that indicator tables   (la, lb, 2 a, 2 b) controlled by the same memory (14) are found   wind on the outside and inside of the vehicle.   5 indicator system according to one of claims   2 to 4, characterized in that inside the vehicle   there is an indicator board (4) on which can be displayed   the next stop or the next station.   6 indicator system according to claim 5, characterized in that the change of indication of the next stop is done automatically after the closing of the   gates and the course a short distance.   7 indicator system according to one of claims   2 to 6, characterized by the fact that an indicator table   additional (5) is located in the driving position.