JPS6239798B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a destination display for a vehicle, for example, in a bus, which transmits the destination displayed on the destination display as a code.

Due to the recent increase in transportation demand in large cities, the development and expansion of bus transportation is being reconsidered. One way to do this is to have a display at each bus stop that shows the progress of the bus passing through that stop, such as displaying that a bus has departed from the bus stop immediately before that bus stop, to inform passengers waiting at the bus stop about the progress of the bus. is proposed to be displayed.

In such a bus location system, each bus transmits a signal with a code corresponding to its destination as a radio wave, which is received at the bus stops it passes and transmitted from the bus stop to the central control center via a repeater, for example. Then, the central control center learns the operating status of the bus, and notifies the corresponding bus stop of the operating status of the bus that should pass through that bus stop, so that it is displayed at the bus stop. In such a bus location system, each bus must transmit a code indicating its destination.

For this reason, in conventional proposals, a radio is prepared inside the bus, and the destination is set by manually operating the data input section using keys.
Some devices constantly transmit the set destination from a wireless transmitter. These systems require the driver to set the destination on the radio, and if the driver sets the destination incorrectly, the bus location system will not operate correctly. Moreover, this method is undesirable because the driver operates the vehicle, which increases the driver's work, and even if this is not the case, the driver's various tasks also increase.

On the other hand, a bus system has been proposed in which the destination is automatically set on the destination display. This destination display is set by the driver operating the destination setting section, driving the curtain feed motor so that the set code and rotational position match, and automatically setting the destination display. be. However, there may be a mismatch between the setting device and the destination display actually displayed, or the automatic destination setting device may malfunction. Therefore, it is not necessarily correct to transmit the setting code for sending the curtain as the destination code.

An object of the present invention is to provide a destination display for a vehicle that allows an operator to display the destination accurately and easily, and that can be configured by adding only a few things to a conventional destination display. It is in.

Conventionally, in order to display a destination on a bus, for example, two buttons, a forward operation and a return operation, have been controlled to advance the curtain displaying the destination in the forward direction or in the reverse direction. The driver stops when the desired destination appears while watching the display. Such a semi-automatic destination display is used, but in the present invention, a stop mark is attached to each destination display shown on the curtain, and a stop mark is placed between the stop marks in the length direction of the curtain. A data mark indicating the destination will be placed on both sides. Means for detecting a mark on a curtain to which such a stop mark or data mark is attached is provided, and when the curtain is stopped, a data mark adjacent to the stop mark for the displayed destination is detected and transmitted. .

As described above, according to the present invention, since the data mark for the destination attached directly to the curtain on which the destination is attached is detected, there is no risk of erroneous detection, that is, there is no risk of transmitting an erroneous data mark. do not have. Moreover, this operation utilizes a conventional device that selects a destination display by sending back a curtain, and simply attaches stop marks and data marks to the curtain, and provides means for detecting these marks. The mark detection means can be optical, for example, and can be constructed very simply.

Next, this invention will be explained with reference to the drawings. FIG. 1 shows an example in which the vehicle destination display device of the present invention is attached to a bus, for example, and transmits its own destination code for use in a bus location system. bus 1
1 is equipped with a transmitter 12, which reads a data mark from a vehicle destination display 13 according to the present invention and transmits it as a destination code from an antenna. The radio waves are received at a nearby bus stop 14 and sent from there to a central processing center 15 via an underground cable or wirelessly. Central processing center 15 has other stops 14b
14d to 14d are also connected by cables, etc.
It receives signals from these sources or sends signals to them. In the central processing center 15, based on the received data, the bus 11 is routed to the bus stop 14a, 1, for example.
For example, if you pass 4b and 14c, stop 14
Display the operating status of the bus that should reach c.

For example, as shown in FIG. 2, the display section 17 displays the destination of the bus passing through the stop 14c, in this example, stop 1 for each of the three destinations bound for Shinagawa, bound for Shinjuku, and bound for Ikebukuro.
The bus that should arrive at 4c displays, for example, a light-emitting display to indicate which stop it has passed. That is, for buses bound for Shinjuku, the lamp 18 indicates that the bus has passed two stops before, and for buses bound for Ikebukuro, the lamp 19 indicates that the bus has passed the previous stop. displayed. Such light emission control is instructed by the central processing center 15.

FIG. 3 shows an example of a destination display for a vehicle according to the present invention, and the display main body 13 is attached to the upper part of the front of a bus, as shown in the bus 11 in FIG. 1, for example. The display main body 13 is connected to the opposing support plate 2
Guide rollers 23, 24 and the like are passed between the rollers 1 and 22, and take-up rolls 25, 26 are also rotatably attached. Both ends of the curtain 27 are wound between winding rolls 25 and 26, and the curtain 27 can be wound in either direction from one roll to the other. The winding rolls 25 and 26 are driven, for example, by a motor 28.

For example, the curtain 27 has display areas 29 arranged at regular intervals along its longitudinal direction, and each display area 29
A destination display 31 is attached to each one. In FIG. 3, the operation section 32 is provided with a forward button 33 and a return button 34, and these buttons 33, 3
4, the motor 28 is driven through the control section 35. That is, while the feed button 33 is pressed, the motor 28 is driven to feed the curtain 27 in the forward direction, and when the button 33 is released, it stops. While the return button 34 is pressed, the motor 28 is rotated in the opposite direction, and the curtain 27 is sent in the opposite direction. Therefore, the driver advances the curtain 27 while controlling the buttons 33 and 34, and operates the buttons so that the desired destination display 31 is obtained while viewing from the driver's seat, that is, from the back side of the curtain 27. After performing this operation, the train departs from the starting station. Such a destination display operation has been conventionally performed.

In the present invention, stop marks 36 are provided along one side edge of the curtain 27 in correspondence with the destination display 31, respectively. In this example, a stop mark 36 is placed at the center of each display area 29 in the length direction of the curtain 27 in a thick and long manner in the width direction of the curtain 27, as shown in FIG. Furthermore, data marks 37 indicating the corresponding destination display 31 are provided on both sides of each stop mark 36 in the length direction of the curtain 27. This data mark 3
7 is displayed, for example, in a binary system or a binary coded decimal system.

In order to facilitate reading of the data marks 37, clock marks 38 are spaced at regular intervals around the stop mark 36, as shown in an enlarged view in FIG.
are attached, and the space between adjacent clock marks 38 corresponds to one bit of a binary number. In the figure, each of the four adjacent intervals between the five clock marks represents one decimal digit of the data mark, and the data mark closest to the stop mark 36 is the first digit 37a, and the next five clock marks The four adjacent intervals are taken as the second digit 37b of the data mark. These data marks 37a and 37b are the stop marks 36
formed on both sides with the center at the center. In the example shown in FIG. 5, the first digit data mark 37a is 10.
It represents the sum of 1 and 4, that is, the number 5, in decimal notation, and the second digit 37b represents 2 in decimal notation, so the data mark 37 as a whole represents 25 in decimal notation.

Furthermore, in order to eliminate such a detection error of the data mark 37, a parity mark 39 is attached at the end of each of the data marks. That is, the parity mark 39 is placed at the farthest position from the stop mark 36. These stop marks 36, data marks 37,
Like the destination display 31, the clock mark 38 and parity mark 39 are printed in black on a milky-white curtain 27 made of synthetic resin material such as polyester.

These various marks are detected, and the stop mark 36 and adjacent data mark 37 corresponding to the selected destination display are read out and transmitted. The mark detection means is configured to perform optical detection, for example. That is, for example, as shown in FIGS. 6 and 7, a clock optical sensor 41 is provided opposite the passing position of the clock mark 38, and a data optical sensor 42 is provided opposite the passing position of the data mark 37. . Further, although these marks 38 and 39 do not pass through, a background optical sensor 43 is provided near the marks 38 and 39, facing the colorless portion of the curtain 27, that is, the background portion.

Each of these optical sensors is connected to the curtain 2 as shown in FIG.
7, a light emitting element 44 such as a light emitting diode is provided on one side, and a light receiving section 45 such as a phototransistor that receives light from the light emitting element 44 that has passed through the curtain 27 is provided on the other side. Ru. The optical sensors 41, 42, 43 are held as one sensor block 46, and the sensor block 4
6, for example, as shown in FIG.
It is fixed facing 7.

The light emitting diodes 44 of these optical sensors 41, 42, 43 are connected in series, as shown in FIG. 8, between the power supply terminal 50 and a common potential point, and each light emitting diode emits light. On the other hand, each light receiving phototransistor 4 of the sensors 41 to 43
5 are connected to each other and connected to the power supply terminal 50, and the phototransistor 4 of the background sensor 43 is connected to the power supply terminal 50.
The emitter of No. 5 is connected to each inverting input side of comparators 47 and 48, and is also connected to a common potential point through a resistor 49. Further, the emitters of the phototransistors 45 of the sensors 41 and 42 are connected to the non-inverting input sides of comparators 47 and 48, respectively, and to a common potential point through resistors 51 and 52, respectively. The resistance values of resistors 51 and 52 are made equal to each other, and this value is selected to be greater than the resistance value of resistor 49. Therefore, the output of the background sensor 43 and each output of the clock sensor and data sensor are compared by comparators 47 and 48, respectively.
The comparison results are output to output terminals 53 and 54, respectively. That is, a negative pulse is obtained at the output terminals 53 and 54 at the position of the clock mark 38 or the position of the data mark 37, respectively. If necessary, as shown in FIG. 9, at both ends of the curtain 27, that is, in the area where the destination display 31 is no longer present, blanks may be placed on the extension of the array line of the data marks 37 at one end, for example, to indicate both ends of the display. A signal end mark 55 is made at the other end, and an end mark 56 with all bits turned on is made at the other end.

The control section 35 in FIG. 3 can be configured using, for example, a microcomputer. For example, as shown in FIG. 10, the CPU 61 reads out the program in the read-only memory 63 via the data bus 62, decodes and executes the program, and sends the program to the send button 33 of the operation unit in FIG. 3 from the terminals 65, 65 through the input port 64. , captures the operating state of the return button 34, or captures the outputs of the clock output terminal 53 and data output terminal 54 in FIG.
In addition, the memory 67, which can be read and written, temporarily stores data or uses the stored data in arithmetic processing, and also sends a motor drive signal to the motor drive circuit 69 through the output port 68 to rotate the motor 28 forward, reverse, or It also drives the transmitter 12 through the output port 71 and sends out a signal indicating the detected data mark, that is, the displayed destination display, and uses the transmitted signal to store the read-only memory 72 as necessary. The read pattern signal is supplied to the display 74 through the output port 73, and the selected destination display is displayed on the display 74 as shown in FIG.

This control section 35 operates according to a flowchart as shown in FIG. 11, for example. That is, whether or not the operation button has been operated is periodically checked in step S _1. If it has not been operated, this is repeated. If it is detected that the operation button has been operated, it is checked in step S ₂ . It is checked whether the motor 28 is being controlled, and if the feed button is pressed, a command to rotate the motor 28 in the forward direction is issued in step _S8 ; if not, it is the case that the return button 34 has been operated, so the motor 28 is rotated in the reverse direction in step _S4 . Outputs rotational output.

Next, in step _S5 , one of the detected stop marks 36 is ignored. This is stop mark 36
If the curtain 27 does not face the sensor block 46 but is stopped slightly shifted from the sensor block 46, the stop mark may be immediately detected as soon as the curtain 27 begins to move, leading to a risk of malfunction. Therefore, such a stop mark is ignored. Next, it is checked in step _S6 whether there is a clock mark 38, and each time the clock mark 38 is detected, the number of clocks is counted in step _S7 . Thereafter, in step _S8 , when the data mark 37 is detected, it is stored in the memory 67.
Furthermore, in step _S9 , it is checked whether a stop mark is detected. If no stop mark is detected, return to step _S6 and check whether a clock mark is present. When a stop mark is detected, the clock count is reset at the next clock mark (step _S10 ).

Next, in step _S11 , a check is made to see if the operation button, that is, the forward button 33 or the return button 34, is pressed, and if it is, the process returns to step _S2 and the motor is driven again to perform the curtain forwarding operation. . The driver performs the operation while looking at the destination displays 31 that appear one after another, and stops the operation at the position where the desired destination display appears. Therefore, in step _S11 , it is detected that the button is not pressed, and the step is started.
The motor is stopped at _S12 . In other words, operation button 3
3 or 34 is turned off, the next stop mark 36
The motor will stop.

Next, in step _S13 , the number of clocks in the clock counter when it was reset earlier is determined, and it is determined whether it was 10, for example. If it is determined that the number of clocks is a predetermined number, a parity check is performed using the parity mark 39 in step _S14 , and if it is correct, an end mark, that is, mark 55 or 56 in FIG. ₉ , is checked in step S15. A determination is made, and if it is not the end, the code of the data mark read at that time is output to the transmitter 12 in step _S16 . In other words, this is the data that corresponds to the destination displayed on the destination display body at that time.

As can be seen from FIG. 5, the presence or absence of a data mark is checked between each adjacent clock mark from the next clock mark 38 with the stop mark 36 as the center, and the state of the data mark, that is, the on/off state of each 4 bits, is stored in the memory 67. Remember. data mark 37
Since the data mark 37 is stored with the stop mark 36 as the center, the data mark 37 can be read in the same way no matter which direction the curtain 27 moves from the stop mark 36.

If the number of clocks is not a predetermined number in step _S13 , or if the parity check is incorrect in step _S14 , reading is performed again in step _S17 . This re-reading is performed by moving the motor 28 by half a frame, that is, by half of the display area 29, in the opposite direction to the previous movement of the curtain, and then returning it again by half a frame, in other words, by reciprocating the curtain by half a frame. Perform reading. In step _S18 , it is determined whether the number of reading errors is within a predetermined value, and if it is within the predetermined value, the process returns to step _S2 . If it exceeds the predetermined value, an error signal is sent in step _S19 . When the end of the curtain is detected in step _S15 , the feeding direction of the curtain is reversed in step _S20 and the process returns to step _S2 .

As described above, according to the destination display for a vehicle according to the present invention, the driver only has to set the display screen before departure in exactly the same way as the operation of a conventional destination display. However, the driver can select and display the correct destination for operation, and also transmit the correct data because the destination display data corresponding to the destination display can be read directly from the displayed curtain. When the destination display is selected, the destination data code is automatically transmitted, and the driver does not need to do much to transmit the destination data code. In addition, in order to do this, a mark is placed on the curtain itself, the curtain is read by a sensor, and the control section outputs an output based on the reading. All you have to do is add a little something to the container.

Further, in the curtain 27, normal forwarding and reverse forwarding are performed, but in this invention, data marks of the display destination corresponding to the stop mark are attached before and after the stop mark as a reference, so this can be detected and the stop mark is also provided. Since the detection is based on this reference, accurate detection is possible, and each time a stop mark is obtained, the detected data mark is stored in the memory.
When the curtain is stopped, the data mark stored in the memory just before is read out and transmitted, which is very convenient when applied to a bus location system.

In addition, as shown in the figure, the number of clocks is counted and the parity check is performed, and the effects of dirt on the curtain and changes in the background due to changes over time are measured as explained in Figures 6 and 8. Correct reading is possible by setting the reading reference level using the output of the background sensor. The destination read in this way can be used not only to transmit the destination of the bus as a signal in the bus location system as described above, but also to display the destination on a display installed in the driver's seat, or to display the destination inside the bus. It can also be used as data for broadcasting.

Further, in the previous example, the data marks 37 were placed on both sides of the stop mark 36 in opposite directions, but they may be arranged in the same direction. That is, in FIG. 5, the upper and lower digits may be interchanged on one side of the stop mark 36, and the order of the weights of each bit of each digit may be interchanged. In this case, when outputting the read data, data corresponding to the reading direction may be output. Also, the clock mark 38 is not necessarily required. Although the stop mark 36 is detected by making the width wider than other marks, other methods may be used. Furthermore, the mark may be detected not only optically, but also by, for example, a mark made of a magnetic material and recorded magnetically, or a mark made of contact foil may be used.

[Brief explanation of the drawing]

Fig. 1 is an explanatory diagram showing an example of a bus location system, Fig. 2 is a diagram showing an example of the display section, and Fig. 3 is an explanatory diagram showing an example of a bus location system.
Figure 4 shows the structure of a vehicle destination display according to the present invention, Figure 4 shows the destination display on the curtain, stop marks, and data marks, and Figure 5 shows detailed examples of the stop marks, data marks, and clock marks. 6 is a diagram showing an example of a sensor that detects a mark, FIG. 7 is a diagram showing a specific example of a sensor, FIG. 8 is a diagram showing an example of a mark reading means, and FIG. 9 is a diagram showing an example of a sensor for detecting marks. FIG. 10 is a diagram showing the functional configuration of the control section, and FIG. 11 is a flowchart showing an example of its operation. 13: Display body, 27: Curtain, 28: Motor,
31: Destination display, 33: Forward button, 34: Return button, 35: Control section, 36: Stop mark, 3:
Data mark, 38: Clock mark, 41: Clock sensor, 42: Data sensor, 43:
Background sensor, 46: Sensor block.

Claims (1)

[Claims] 1. Destination indicators 31 are sequentially attached along the longitudinal direction, stop marks 36 are attached corresponding to each destination indicator 31, and stop marks 36 are attached on both sides of the stop marks 36 along the longitudinal direction. The curtain 27 is attached with a data mark 37 based on the mark, and the motor 28 is driven by operating the feed button 33 to send the curtain 27 in the forward direction, and the curtain 27 is moved in the forward direction by pressing the return button 34.
an operating section 32 that drives the motor 28 in the opposite direction to send the curtain 27 in the opposite direction and selectively displays a destination display on the curtain; the stop mark 36 and the data mark 37;
mark detection means 41 for detecting as an electrical signal;
42, and a memory 6 in which the detected data mark is stored for each data mark from the mark detection means.
7; and means for reading and transmitting the data stored in the memory immediately before each time the curtain 27 is stopped.