JPS5922233B2 - Destination display device for route vehicles - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a destination display device for a route vehicle, and more particularly to a device for detecting a shift in each display in an interlocking destination display device provided at a plurality of locations on a vehicle.

For example, a route bus is provided with a display device for displaying the destination.

Normally, display curtain winders are provided at the front, side, and rear of the vehicle to display the display, respectively, and the display at these three locations is configured to change in conjunction with each other.
However, conventional destination display devices do not have any special means for detecting such a shift between a plurality of displays. Therefore, to know whether there is a gap between each display,
It requires visual confirmation and is complicated to handle. The present invention has been made in view of the above-mentioned points, and an object of the present invention is to provide an interlocking destination display device that can automatically detect a shift between a plurality of displays.

In order to achieve this object, the present invention provides a mark indicating each display stage on the display curtain of each winder, and also provides a detector for each display curtain to detect the mark and know the display contents of the display curtain. This is an interlocking destination display device that can compare the detection contents of each of these detectors and detect any deviation between the displays. An embodiment of the present invention will be described below with reference to the accompanying drawings. FIG. 1 shows the structure of a display screen used in the present invention.

Three display curtains are used for the front, side, and rear of the vehicle, and they all have the same destination display A. This display A is provided on the display part of the display curtain,
It is not provided on both sides and both winding ends. Side display A
Marks B are provided on both sides of each display curtain to indicate the position of each stage. This mark B is made of a material such as aluminum foil, and adjacent display stages are marked with the mark B on different sides.
be arranged. Firstly, this is to prevent only one side from becoming thick when the display curtain is rolled up.
The second purpose is to avoid dimensional problems between the detectors for detecting the mark B or interference in the operation of the detectors. Therefore, speaking only from a principle point of view, Mark B
may be provided only on either side of the display screen. Further, when the three display curtains display the same image, the mark B is placed on the same side of each display curtain.

Marks B are also provided on the stop control sections at both winding ends, but the arrangement of the marks in this case is different from that of the display section. That is, the stop control section does not have a display stage, but instead has an adjustment position and a stop position, and marks B are provided corresponding to these positions. At the adjustment position, the marks B are provided on both sides of the display curtain, and at the stop position, the marks B are arranged on different sides of any of the three display curtains. Due to this arrangement of marks B, at the adjustment position, it is always detected that the marks B of each display curtain are aligned, that is, the display is normal, whereas at the stop position, one display curtain is always detected as This is detected as a state different from the two display curtains, that is, an abnormal display state.

In other words, the adjustment position and the stop position can be said to be for simulating when the display is normal and when it is abnormal. Therefore, by operating the device of the present invention using the adjustment position and the stop position, it can be confirmed whether each element of the device of the present invention operates correctly. Note that since it is sufficient that the marks B are aligned at the adjustment position, the marks may be provided only on one side of the display screen.

On the other hand, in order to detect mark B on the display curtain, detectors TFl, TF2,
TSl, TS2, TRl, and TR2 are provided. As this detector, a proximity switch or the like can be used, for example, and is provided near both sides of the display screen. 2 to 4 show control circuits of the device according to the present invention,
Fig. 2 shows a display detection circuit for the display curtain, Fig. 3 shows an operation circuit for controlling the movement of the display curtain according to the output of the detection circuit shown in Fig. 2, and Fig. 4 shows a display curtain detection circuit according to the circuit operation shown in Fig. 3. The figure shows a motor circuit that performs running drive.

In Figure 2, TFl, TF2, TSl, TS2, T
Rl and TR2 are the aforementioned detectors, and mark B
When mark B is detected, an H output is generated, and when mark B is not detected, an L output is generated.

Each of these detectors produces two outputs with the same content,
Each output of TFl, TSl, TRl is a NAND gate NAN
3 input terminals of Dl and NOR gates NORl, NOR2,
It is given to each one input terminal of NOR3, and also TF2,
Each output of TS2 and TR2 is 3 of NAND gate NAND2.
Input terminal and NOR gate NORl, NOR2, NOR
3 to each other input terminal. Nand Gate NA
When the signals applied to the three input terminals of NDl and NAND2 are all H, they produce an L output to energize relays 1 and 2. Furthermore, when an H signal is applied to at least one of the two input terminals of the NOR gates NOR1, NOR2, and NOR3, an L output is generated to energize relays F, S, and R. Relay 1, 2
is for detecting whether or not the display on each of the three display curtains matches, and the contact point is incorporated into the operation circuit shown in Figure 3.
It is used for two purposes: to form a motor energization circuit until the display curtains match and open it when they match, and to display an abnormality when the mismatch state of the three display curtains continues for a predetermined time or more. In addition, relays F, S, and R detect that mark B has reached the position of the detector, and their contacts are the fourth
It is incorporated into the motor drive circuit shown in the figure and is used for the purpose of stopping the current supply to the display curtain winding motor when mark B reaches the position of the detector. In Figure 3, 3A and 3B
is a keep relay coil, and when 3A is energized, the contact 3C is switched to the broken line side in the figure, and when 3B is energized, the contact 3C is switched to the solid line side in the figure. Contact 3C then remains in the switched position unless the other coil is energized. Reference numerals 4 to 9 indicate auxiliary relays which, when energized, close the a contact, open the b contact, and switch the c contact from the solid line side to the broken line side.

Further, PBl and PB2 are push button switches, which are used to determine the display curtain winding direction of the display curtain device by energizing the auxiliary relay 7 or 8 when operated.SW is an adjustment switch, and when operated, the auxiliary relay is energized to form an energizing circuit for auxiliary relays 7 and 8, and press button switches PBl and PB2 are activated.
This is to energize relays 7 and 8 when pressed. In FIG. 4, motors MF, M8, MB. When the relay contacts Fc, Sc, and Rc are at the solid line positions shown in the figure, the relay contacts 7c, 7a and 8c, 8a are energized to wind up the display curtain in either direction determined by the relay contacts 7c, 7a, and 8c, 8a, and the relay contact Fc , Sc, and Rc switch to the positions shown by the broken lines, the winding operation is stopped.

The relay contacts Fc, Sc, and Rc are the detectors TFl in Fig. 2,
These are the contacts of relays F, S, and R that respond to TF2, TSl, TS2, TRl, and TR2, and these detectors are marked B.
As long as (Fig. 1) is detected, the terminals of the motors MF, MS, and MR are short-circuited with a resistor at the position shown by the broken line.
Since the winding operation of the display curtain ends when the detector detects the mark B, the detector continues to detect the mark B when winding the display curtain is started next time. For this reason,
The motors MF, MS, and MR are started with the relay contacts Fc, Sc, and Rc on the side of the broken lines in the figure, but the starting current cannot flow in this case. Therefore, relay contacts 7c, 7
At the moment when a or 8c, 8a is closed, a pulsed starting current is applied to the motors MF, MS, MR through a series circuit of a resistor R8 and a capacitor Cs, which is a well-known circuit configuration. As a result, when the motor rotates slightly, the display screen is moved slightly and mark B is removed from the detector. As a result, relays F, S, and R are deenergized and relay contacts Fc, Sc, and Rc are switched to the solid line side shown in the figure, and marks MF and MS are transferred via relay contacts 7c, 7a or 8c, 8a.
, MR can be energized. The operation of this device will be described first when each detector detects the stop control section of the display curtain, and then when it detects the display section. a)
Operation by the display curtain stop control unit In the case of the first illustration, the display curtain stop control unit has the first and second stop control units.
There is a stop position and two adjustment positions arranged alternately with this stop position.The stop position is used to express the state where the display of each display curtain is shifted, and the adjustment position is used to express the state where the display of each display curtain is shifted. It is used to create a state where there is no display shift.

Each of these operations will be explained in connection with the explanation of the operation by the display section of the display curtain in the following section b. b) Operation by the display section of the display curtain It is now assumed that there is no display shift on each display and mark detection is performed by a predetermined group of detectors.

For example, when the detectors TFl, TSl, and TRl detect and produce an H output, the input condition of the NAND gate NANDl is satisfied and an L output is produced, setting the potential of the left end of the relay 1 in the diagram to L, and connecting the power supply connected to the right end of the relay 1 in the diagram. Relay 1 is energized because energizing current is passed from +E to relay 1. At this time, since the detectors TF2, TS2, and TR2 are not detecting the signal, the input condition of the NAND gate NAND2 is not satisfied, an H output is generated, and the relay 2 is not energized. As a result, the contacts 1a of the relay 1 are closed, the contacts 1b are opened, and the contacts 1c are switched from the solid line side to the broken line side in the figure.

Relay 4 is energized by switching contact 1c, and contact 4
A is closed to form part of the energizing circuit for motor energizing relays 7 and 8. Here, the relay 4 is provided with a CR time constant circuit, and even after the relay contact 1c returns, the display curtain remains on the display stage 1.
The energizing circuit continues to be formed for the time that the motor is energized so that the motor travels approximately one step. The energizing circuit of the relays 7 and 8 has the keep relay contact 3c on the solid line side in the figure, or the contact 9 of the relay 9 that is driven by the adjustment switch SW.
By closing b, a state is created in which an energizing current can flow.
When all the detectors detect the adjustment position mark in the stop control section of each display screen, the relays 1 and 2 are energized, and the keep relay contact 3c is connected to the keep relay coil 3.
B is energized and switched to the solid line side shown in the figure, and the adjustment switch SW is normally open and the relay contact 9b is closed. In this state, when push button switch PBl (or PB2) is pressed, relay 7 (or 8) is energized and its contact 7a
(or 8a) is closed, 7b (or 8b) is open, 7
c (or 8c) is switched to the broken line side, and the motors MF, Ms, and MR are energized for forward rotation (reverse rotation) by the motor energization circuit shown in FIG. Now, to explain the circuit shown in Fig. 4, motor MF, Ms, and MR are connected to the contacts of relay 7 (or 8) when the contacts Fc, Sc, and Rc of relays F, S, and R shown in Fig. 2 are on the solid line side. When the motor terminals are on the broken line side, the motor terminals are short-circuited via the resistor. These relay contacts Fc, Sc, and Rc are on the solid line side in the drawing when the relays F, S, and R are deenergized, and are on the broken line side when energized. And as mentioned above, relay contacts Fc, S
Even if the terminals of motors MF, M8, and MR are short-circuited by resistors c and Rc, the current-carrying circuit formed by contacts 7a and 7c (or 8a and 8c) is activated by relay 7 (or 8). Therefore, the motors MF, MS, and MR are energized. Therefore, the push button switch PBl (or PB
2) is pressed to energize relay 7 (or 8), a current supply circuit is formed for motors M, M8, MB, and these motors rotate in the forward direction (reverse direction). The same thing can be done by applying external signals to the terminals X2 and X3. Next, a case will be described in which the display shift of the display curtain continues for a long time.

Here, the term "long time" refers to a time longer than the time required to wind up just one display stage of the display curtain. In this case, the input conditions for both NAND gates NANDl and NAND2 are not satisfied and relays 1 and 2 are de-energized, so energizing current is applied to relay 6 through its contacts 1c and 2b, and contact 6c moves to the dashed line side. Switch.

At the same time that relay 6 is energized, a circuit is formed in parallel with relay contact 4a via diode D, and energizing current is applied to relays 7 and 8 by this circuit. As a result, the motor is energized by the relay contacts Fc, Sc, and Rc at this point, and the displacement of the display screen is eliminated. This deviation cancellation operation is performed only for the time limit of the time constant circuit of the base of the transistor Q.

Therefore, the time limit of this time constant circuit may be set to such an extent that the deviation elimination operation can be completed in the case of normal display deviation, for example, to such an extent that the time required to advance one display stage is maximized. When the relay 6 is deenergized and the contact 6c returns to the solid line side within this set time, the charge in the capacitor C is immediately discharged, and accordingly, the transistor Q remains not turned on. On the other hand, when the relay 6 is energized for a long time longer than the time limit of the CR time constant circuit due to the display deviation of the three display curtains, charging of the capacitor C is started in the CR time constant circuit, and after a predetermined time, the transistor Q turns on.

As a result, the keep relay coil 3A is energized, its contact 3c is switched to the broken line side, the energizing circuit of the relays 7 and 8 is opened, and the light emitting diode LED is emitted to indicate that the display curtain is out of alignment. Here the light emitting diode LED
Although the light source simply emits light continuously, a well-known configuration such as flicker light emission may be adopted. When the display deviation is displayed by the light emitting diode LED, turn the adjustment switch SW.
Close it and operate the pushbutton switches PBl and PB2, or operate the individual switches (not shown) provided for each display to turn the motor of the display in question and adjust the misalignment. conduct.

As described above, the present invention displays an abnormality when a display misalignment occurs between a plurality of display curtain devices in a route vehicle and is not resolved within a predetermined time, so that the plurality of display devices display inconsistent displays. It is possible to prevent a situation in which a vehicle running on a route continues to run with the vehicle in a closed position, causing inconvenience to passengers.

[Brief explanation of the drawing]

Fig. 1 is a diagram showing the structure of the display curtain used in the present invention, Fig. 2 is a circuit diagram for detecting the position of the display etc. of the display curtain in Fig. 1, and Fig. 3 is a running control diagram of the display curtain in Fig. 1. Operation circuit diagram, 4th
This figure is a circuit diagram of a motor that drives the display screen to travel in accordance with the circuit operation of FIG. 3.

Claims (1)

[Claims] 1 Each of the display curtains has a plurality of display curtains provided with a mark indicating the destination display position and a plurality of motor devices for winding up each of these display curtains separately, and the destination display is performed by winding up the display curtains with the motor device. a plurality of display curtain devices for changing the display curtain, and a plurality of detectors provided for each of these display curtain devices to detect the mark and detect whether or not the display curtain is being correctly rolled up by the display curtain device. a motor control circuit that energizes the motor device until each of these detectors detects the mark and stops energizing the motor device when the mark is detected; The time from when the motor control circuit is energized and each of the display curtains begins to be wound up until each of the detectors detects the mark is measured, and if the mark is not detected within a predetermined time, an abnormality is displayed. and an operation circuit for causing the motor control circuit to stop energizing the motor when a mark is detected within a predetermined time.