KR870000684B1 - A guide system of bus stop - Google Patents

Abstract

This invention is concerned with bus-stop guidance device with the computerized single board system. The displaying device with matrix- arrayed LEDs displays information in both Korean and English. By driver's simple switching operation, next bus stop is displayed on the LED matrix in both Korean and English, enabling passengers easily learn the bus-stop where they should get off.

Description

Stop Guide

1 is a schematic block diagram of the present invention.

2 is a detailed circuit diagram of the present invention.

3 is a view showing an embodiment of the present invention.

* Explanation of symbols for the main parts of the drawings

100: input device 200: input control setting unit

300: monostable multivibrator 400: counter

500: Main decoder 600, 603: Subordinate decoder

700, 702: ROM 800: Indicator

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a station guide device comprising a single board computer system in which a display device comprising a light emitting diode (LED) in a matrix arrangement is configured to display Korean and English characters.

In public transportation such as buses and trains, passengers or drivers are trained and announce the following stops and stops to passengers. Not only that, but also during the snowy, rainy, or foggy weather, or during nighttime, the passenger's clock was bad, which often led to the passing of the stop where he had to get off.

On the other hand, as a conventional technique for eliminating such closed ends, Utility Model Registration Application No. 84-3776, which is a prior application devised by the inventor of the present invention, is provided at an appropriate position in the vehicle and the next stop is displayed by the driver's switch operation. There is a stop guide, but since this is a mechanical structure operated by a motor, there is a possibility of malfunction due to wear of moving parts such as reducer, interlock, micro switch, etc. Because the letters written on the stop marker tape are not emitted by themselves, but are illuminated by fluorescent lamps installed on the inside, they have a weak point to remind the passengers of attention.

The present invention solves the above-mentioned disadvantages, and the driver of the bus or the train can guide the stop at the same time in Korean and English even when the operation is simple, and because the light emitting diode is used, the letters themselves emit light. In addition to being able to guide passengers to the next station or stop in a clear state, the use of semiconductors is almost semi-permanent in life and durability.

In the present invention as described above, a group of light emitting diodes (12 horizontally and 16 vertically) arranged in a matrix array to display Korean characters is installed in five groups to display a maximum of five Korean characters, and in order to display English characters, a matrix array is displayed. A display device that can display up to 12 characters using 12 groups of light emitting diodes (5 horizontal and 7 vertical), and a programmable read-only memory that stores all the information for all stops on a vehicle's driving route. (Program Read Only Memory: collectively referred to as ROM), the counter section that generates the reference pulse signal, and the station data of the vehicle stored in the ROM in accordance with the set and reset signals of the external input device are sequentially output. It is composed of control units.

The present invention will be described in detail with reference to the accompanying drawings as follows.

1 is a schematic diagram of the present invention.

The input device 100 includes three switches for generating a reset signal, an up / down count selection signal, and a stop selection signal.

The reset signal from the input device 100 is input to the input control setting unit 200 to set each ROM of the input control setting unit 200 to an initial state as described in detail later. The up / down count selection signal, that is, the up / down count selection signal indicating the direction of movement of the vehicle here, causes the up / down counter of the input control setting unit 200 to act as an up counter or a down counter.

The up / down count signal, that is, the stop selection signal of the clock signal is input to the monostable multivibrator 300 and is formed of a clock signal having a pulse width of a predetermined delay time, so that the up / down counter of the input control setting unit 200 As it is input to the clock input, the counter starts counting.

On the other hand, since the counter 400 has a clock signal having a pulse width of a predetermined delay time by using an oscillator provided therein, as a clock input of the counter therein, the counter generates a 2-bit information pulse to generate a programmable ROM ( 700-702, the main decoder 500, and the slave decoder 600-603.

In addition, since the main decoder 500 supplies a signal of level "0" on each control pin (INH IBIT terminal) of the four slave decoders 600-603, the operation of the slave decoder 600-603 is sequentially performed. To control.

The slave decoders 600-603 sequentially output signals of 16 bits under the control of the main decoder 500 in accordance with the four outputs of the counter unit 400. The ROMs 700, 701, and 702 generate an output signal for each output terminal according to the binary data address signal from the input control setting unit 200 and the counter unit 400. In the display unit 800, LEDs are arranged in a matrix arrangement in which 30 horizontal and 60 vertical columns are arranged, and a ROM is connected to one side of each matrix column, a bass is connected to an output side, a collector is commonly connected to a power supply, and an emitter is connected to the first of each matrix. The LED driving transistor connected to the cathode axis of the LED is installed in parallel, and at the same time, the base is connected to the output side of the decoder (600-603) on one side of each matrix new row, and the collector is connected to the first LED anode side in each matrix row. In addition, the emitter is grounded and includes a transistor for driving the LED according to the output of the decoders 700 to 702.

)를 통해 ROM(700－702)의 각 어드레스핀 (A₆－A₁₀)에 개별적으로 공접시키며, 클럭 발생기(OSC), 바이너리 카운터(CT₃), 저항(R₅)(R₆) 및 콘덴서(C₂)로 카운트부(400)를 구성하고, 상기 카운트부(400)내의 바이너리 카운터(CT₃)의 출력단(Q₀－Q₅)을 버패(B₆－B₁₁)를 통해 ROM(700－702)의 각 어드레스핀(A₀－A₅)에 개별적으로 공접시킴과 동시에 데코우더(500, 600－603)의 각 입력핀 (A₀)(B₀), (A－D)에 공접시키며, 상기 주데코우더(500)의 출력핀(Q₀－Q₃)을 차례로 종속데코우더(600－603)의 각 제어핀(1H)에 연결하고, 이 데코우더(600－60 3)의 각 출력핀(Q₀－Q₁₅)을 저항(R₃₀－R₈₉) 및 LED 구동 트랜지스터(TR₁－TR₆₀)를 통해 각각 LED(D₁－D₉₆₀)(D₉₆₁－D₁₃₈₀)로 된 한글 및 영문 표시용 LED 매트릭스( 3)(4)의 각 종측 접속선 (n₁－n₆₀)에 차례로 공접시키며, ROM(700－702)의 각 출력핀(Q₀－Q₇), (Q₀－Q6)을 구동 트랜지스터(TQ₁－TQ₂₃) 및 저항(R₇－R₂₉), (R₉₀－R₁₁₂)을 통해 한글 및 영문표시용 LED 매트릭스(3)(4)의 각 횡측 접속선(1₁－1₂₃)에 각각 연결한 구성으로서, 미설명 부호중 V_CC는 직류전원 입력단자, ST는 데코우더의 스트로우브 (strobe)핀, 그리고 Q, R, CK, U/D, Cl, CO는 각각 카운더, 클럭 발생기 및 단안정 발진기의 출력핀, 리세트핀, 클럭 입력핀, 업/다운 선택핀, 캐리인(Carry in) 및 캐리 아우드(Carry out)핀이며, 5는 정류장 표시판, 6은 정류장 안내기의 기체이다.If the present invention were constructed in this manner described in detail in accordance with claim 2, the input device 100 is a switch to make the up-counting and down-counting operation of the reset switch (SW), the up / down counter (SW ₂₎ And (SW ₃ ). Input control setting unit 100 each output (Q ₀₎ of the counter (CT ₁₎ (CT ₂₎ in the up / down counter (G ₁₎ and consists of (CT _2), the setting unit (1), ( Q _0- Q ₃ ) buffer

) Are individually shared to each address pin (A _6- A ₁₀ ) of the ROM 700-702, and the clock generator (OSC), binary counter (CT ₃ ), resistor (R ₅ ) (R ₆ ) and capacitor The counting unit 400 is configured by (C ₂ ), and the output terminal Q ₀ -Q ₅ of the binary counter CT _{3 in} the counting unit 400 is passed through the buffer B ₆ -B ₁₁ . Each address pin (A _0- A ₅ ) of -702 is individually shared and simultaneously with each input pin (A ₀ ) (B ₀ ), (A -D) of decoders 500 and 600-603. The output pins Q ₀ -Q ₃ of the main decoder 500 are sequentially connected to the respective control pins 1H of the slave decoder 600-603, and the Each output pin (Q ₀ -Q ₁₅ ) is connected to a LED (D ₁ -D ₉₆₀ ) (D ₉₆₁ -D ₁₃₈₀ ) through a resistor (R ₃₀ -R ₈₉ ) and an LED driving transistor (TR ₁ -TR ₆₀ ), respectively. The vertical and horizontal connection lines (n ₁ -n ₆₀ ) of the LED matrix (3) (4) for displaying Korean and English are in common with each other, and the ROM (700-702) Each of the output pins (Q ₀ -Q ₇ ) and (Q ₀ -Q6) of the through the driving transistors (TQ ₁ -TQ ₂₃ ) and resistors (R ₇ -R ₂₉ ), (R ₉₀ -R ₁₁₂ ) Each component is connected to each of the horizontal connection lines 1 _{1-1 23 of the} display LED matrix (3) (4), wherein V _CC is a DC power input terminal and ST is a strobe of the decoder. Pins and Q, R, CK, U / D, Cl, and CO are the output pins, reset pins, clock input pins, up / down select pins, and carry-in for counter, clock generator, and monostable oscillator, respectively. in) and Carry out pins, 5 is a stop sign and 6 is a stop guide gas.

The operation and effects of the present invention configured as described above are as follows. The Hangul display LED matrix (3) used in the present invention is composed of a total of 960 LED arrays of 60 vertically and 16 vertically, and as shown in FIG. 2, five LED groups (horizontal side) of the stop display panel 5 are shown. It can be separated into 12 and 16 vertically to display up to 5 Korean characters, and the LED matrix for English display (4) consists of a total of 420 LED arrays of 60 horizontally and 7 vertically. 12 LED groups (5 horizontally and 7 vertically) are installed at the bottom of the panel to display the maximum 12 English characters.

On the other hand, information on all the stops of the vehicle driving route, which are displayed by the above-described Korean and English LED matrix (3) and (4), is stored in each of the ROMs 700 to 702. Each piece of information on all stops displayed in this Hangul is stored by the ROMs 700 and 701, and the characters displayed by the upper horizontal connecting line 1 _{1-1 8} of the LED display 3 for Hangul display. information by a ROM (700) and the bottom transverse connection for the wire _(19-116) would information on the character represented by the stored by the ROM (701), also US LED matrix (4) for display Each piece of information on all stops displayed in English is stored by the ROM 702.

First, when V _CC power is supplied to the circuit of the present invention, it is set by the resistor R ₅ (R ₆ ) and the capacitor C ₂ at the output pin Q of the clock generator OSC in the counting unit 400. because the reference pulse of a constant frequency is output to the input clock input pin (CK) of the counter (CT ₃₎ is a counter (CT ₃₎ frequency division is output to each output pin (Q ₀ -Q _5). The output of the counter CT ₃ is input to each address pin A ₀ -A ₅ of the ROM 700-702 through the buffers B _6- B ₁₁ , respectively, to obtain the address of each ROM 700-702. each output pin of the decor at the same time as the specified zoom woodeo each input pin (a _0), (B _0), so also input to the (a-D) dependent decor woodeo (600-603) of the _{(500, 600-603) (Q 0} - Q ₁₅ ), the hexadecimal output signal is sequentially output corresponding to the output of the counter CT ₃ . However, at the same time, the output pins Q ₀ -Q _{3 of the main} decoder 500 also correspond to the output inputs of the output pins Q ₄ and Q ₅ of the counter CT ₃ in the counter 400. A quadrature output signal is output and input to the control pins 1H of the slave decoders 600-603, respectively, so that the control pins 1H of the four decoders 600-603 are in the "LOW" state. Since only one decoder operates normally, the decoder 600 normally operates in the order of the decoder 600, the decoder 601, the decoder 602, and the decoder 603. Therefore, the output corresponds to the output of the counter CT ₃ in the counting unit 400. First, the hexadecimal output signal is sequentially output from each output pin Q ₀ -Q ₁₅ of the slave decoder 600, and then the next decoder. A dynamic drive method is performed in order of (601), 602, and 603, thereby driving connected to each output pin Q ₀ -Q ₁₅ of the decoder 60 0 -603. When the transistors TR _{2 to} TR ₆₀ are sequentially turned on, the longitudinal connection lines n _{1 to} n _{60 of the} LED matrix 3 and 4 for the Korean and English displays connected thereto are also selected one by one in a "LOW" state. For example, when the output pin Q ₀ of the slave decoder 600 becomes "HIGH" and the transistor TR ₁ is turned on, the longitudinal side of the LED matrix 3 and 4 for Korean and English display. Since only the connection line (n ₁ ) is selected and goes to the "LOW" state, all LEDs (D ₁ , D ₆ ) connected to this longitudinal connection line (n ₁ ) ₁ , ... D ₉₀₁ , ... D ₁₃₂₁ ) is standby by being in the "LOW" state.

In such a state, when the stop selection switch SW ₃ of the input device is pressed once, one clock is input to the monostable multivibrator 300, thereby outputting to the output pin Q of the monostable multivibrator 300. One clock pulse having a constant pulse width set by the resistor R ₃ and the capacitor C ₁ is output and input to each clock pin CK of the up / down counter CT ₁ (CT ₂ ). .

Therefore, the output of each output pin (Q ₀ ) (Q ₀ -Q ₃ ) of the up / down counter (CT ₁ ) (CT ₂ ) is inverted once from the initial state, and then each buffer (B ₁ -B _5). By inputting to the address pins A ₆ -A ₁₀ of the ROM 700-702 through), input to each address pin A ₀ -A ₅ of the ROM 700-702 as described above. The total address of each of the ROMs 700-702 is specified together with the output of the counter CT ₃ in the counting unit 400, and the information stored at the address specified in this manner is assigned to each output pin of the ROM 700-702. Output via Q ₀ -Q ₇ ), (Q ₀ -Q ₇ ). Thus, the transistor connected to the output pin of “HIGH” state among the output pins (Q ₀ -Q ₇ ) (Q ₀ -Q ₆ ) by the addressing of each ROM 700-702 receives the base potential. If there is the continuity, for example, only the output pin (Q ₀₎ of the ROM (700) output pin (Q ₀₎ and ROM (702) that will be a "GIGH" state, associated with each of these output pins transistor (TQ ₁₎ (TQ _17), so only the conduction, thereby Hangul and the English display LED matrix (3) (4) All of transverse connecting lines for the _(11-123) of the transverse connecting lines ₍₁₁₎ to select only the ₍₁₁₇₎ In this state, all the LEDs (D ₁ -D ₆₀ ) (D ₉₆₁ -D ₁₀₂₀ ) connected to the transverse connecting line (1 ₁ ) (1 ₁₇ ) are brought to the "HIGH" state.

As described above, the moment of selection of the lateral connection lines 1 ₁ and 1 _{17 of the} LED matrix 3 and 4 for displaying in Korean and English, and the slave decoder 600-603 of the dynamic drive method as described above. by the sequential output Hangul and the English LED matrix (3) (4) longitudinal axis connecting lines for display (n ₁₎ is selected, is excited all the LED connected to a _{(D 1, D 61 ... D} 901, ... D 1321) When the timing of standby becomes coincident with the timing of the cathode being “LOW”, the horizontal connecting line (1 ₁ ) (1 ₁₇ ) and the vertical axis connecting line ( Only the LED (D ₁ ) (D ₉₆₁ ) connected between the points where n ₁ ) intersect with each other is energized and emits light, and thus each output pin (Q ₀ ) is changed as each address of the ROM 700-702 is changed _. -Q ₇ ) (Q ₀ -Q ₆ ) changes in the output and of each output pin (Q ₀ -Q ₁₅ ) of the slave decoder 600-603 of the dynamic drive method. Since the sequential change in output is all caused by the output from the output pins Q ₀ -Q ₅ of the counter DT _{3 in the} counting unit 400, each addressing speed and the dependent decoration of the ROM 700-702 are determined. The sequential output change rates of the respective output pins Q ₀ -Q ₁₅ of the orderer 600-603 are matched to match timing.

Therefore, as shown in FIG. 2, only the LED corresponding to each letter displayed on the LED matrix for Korean and English display (3) and (4) is applied to each address of the ROM 700-702 so that the LED can be energized and emitted. When the information to be stored is set, the longitudinal connecting line (n ₁ ) from the longitudinal connecting line (n ₁ ) of the LED matrix (3) (4) for Korean and English displays by the inverted output of the counter CT _{3 in the} counting unit 400. n ₆₀ ) in order, the LEDs corresponding to the display letters are sequentially energized to emit light, so that one stop is displayed on the LED matrix (3) (4) for the Korean and English display, and the LED for the Korean and English display is displayed. Since the 60 longitudinal connecting lines (n ₁ -n ₆₀ ) in the matrix (3) (4) are selected one line at a time, in order to prevent the LED emitted light from flickering visually, the number of lighting per one longitudinal connecting line is set to 1. More than 40 times per second Resistance (R ₅₎ (R ₆₎ and the capacitor (C ₂₎ 60 (full vertical axis connecting lines) the oscillation frequency of the subject to properly adjust the values, a clock generator (OSC) of the inside to give it, the count unit 400 for these When the number of times of lighting is set to be equal to or greater than × 40 (400 times of lighting), the characters displayed on the LED matrix for displaying Korean and English characters (3) and (4) appear to be lit at the same time without flickering. The set values of the resistors R ₅ (R ₆ ) and the capacitor C ₂ in the equations are expressed as follows.

Where f is the oscillation frequency of the clock generator (OSC).

One stop is displayed on the LED matrix (3) (4) for Korean and English display by the above circuit operation, and in this state, the stop select switch SW ₃ in the input device 100 is once again displayed. pressing each output pin (Q ₀₎ of the up / down counter (CT ₁₎ (CT ₂₎ the up / down counter is a clock is input to each clock pin (CK) of a _{(CT 1) (CT 2)} (Q The output of _0- Q ₃ is inverted, and the address of each ROM 700-702 is changed and designated by this inverted output, so that the information stored at this changed-designated address is written to each output pin (ROM-700). The following stop is displayed on the LED matrix 3 (4) for displaying Korean and English characters by outputting through Q ₀ -Q ₇ ) (Q ₀ -Q ₆ ).

On the other hand, the downward selection switch SW ₂ of the input device 100 is a switch for determining the ascending or descending between both end points of the vehicle driving route, and when the switch SW ₂ is "off", the up / down counter ( Since the CT ₁ ) (CT ₂ ) is operated as an up counter, each time the stop selection switch SW _{2 in the} input device 100 is pressed, the up / down counter CT ₁ (CT ₂ ) is released from the monostable multivibrator 300. As the clock pulse is input to each clock pin of CK, the output of each output pin Q ₀ (Q ₀ -Q ₃ ) of the up / down counter CT ₁ (CT ₂ ) proceeds to UP. The address of each ROM 700-7 02 is changed so that the route of each stop displayed on the LED matrix (3) (4) for Korean and English display is shifted upward, while the switch SW ₃ is used. If you turn on, each up / down counter (CT ₁ ) (CT ₂ ) acts as a down counter. The line of each stop displayed on the ED matrix 3 and 4 changes downward.

That is, for example, if the driver presses the stop selection switch (SW ₃ ) once in a state in which the stop route is set up by the up and down selection switch (SW ₂ ) in the input device 100, the Korean and English signs may be used. Since the stops displayed on the LED matrix 3 and 4 are changed in the upward direction, passengers can easily know the next stop. In this state, when the passenger car moves to the downward direction after the vehicle reaches the end point, if the above upward and downward selection switch (SW ₂ ) is turned on and set to downward, this time the stop selection switch (SW ₃ ) is pressed once. The stops displayed on the LED matrix (3) (4) for Hangul and English display are changed in descending order every time. In the present invention, two ROMs (700-702) are used for 2K × 3 bytes. Up to 32 stops can be displayed in turn by the memory function and the output of each counter (CT ₁ ) (CT ₂ ) (Q ₀ ) (Q ₀ -Q ₃ ) in the setting section (1). Increasing the capacity of (700-702) can increase as much.

And among the LED matrix (3) (4) of the Korean and English display of the present invention, the LED (D ₁ -D ₉₆₀ ) constituting the LED display matrix (3) of the Korean display is a red LED, the LED display (4) The LED (D _961- D ₁₃₈₀ ) that constitutes the green LED can be installed in two colors, such as green LED, and the visual effect can be enhanced.

As described above, the present invention is a useful invention that allows the passenger to easily check the stop to be stopped by allowing the driver to switch the next stop by the driver's simple switch operation on the LED matrix for displaying Korean and English.

Claims (1)

The input control setting unit is composed of a counter for generating an initial set control signal and a counter for generating upper address information bits by inputting a clock pulse from a monostable multivibrator, and a counter unit for input of an oscillator and an oscillator for generating a reference pulse. Control the output of a plurality of programmable ROMs by the upper address binary information and the lower address binary information, and at the same time by a partial output from the counter. The 4-bit output of the main code is sequentially set to "LOW", and accordingly, the output of the slave decoder is sequentially set according to the control output of the main decoder, while the input of a plurality of subordinate decoders simultaneously receiving the remaining outputs from the counter. The output is controlled so that the display Stop guidance device which let Ryujang display.

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