KR20000074100A - Method of controlling a city bus traversal - Google Patents

Abstract

PURPOSE: A control system is provided to achieve an improved effectiveness and safety in operation of bus by allowing radio communication among bus, central control computer, and bus station. CONSTITUTION: A radio data transmitting/receiving system is mounted to a central control computer installed at a central management office, so that bus operation information is collected from a traffic information collector installed at a city bus and a position information generator installed at a bus station. In addition, the radio data transmitting/receiving system sends data needed for bus operation to the traffic information collector and position information generator. Such a data transmission/receiving is performed between the traffic information collector and the position information generator. The central control computer creates a database for the operation information collected from the traffic information collector and the position information generator, and outputs the processed information onto a monitor or a printer. The position information generator transmits bus station information and passed time of the previous bus, informing passengers staying at the bus station of expected arrival time for bus, and control communication protocol. The traffic information collector collects position information and passed time of the previous bus, reports the collected passed time to the position information generator, sensed running speed from an encoder, receives command from the central control computer, and informing the passengers of the position of bus station.

Description

Method of controlling a city bus traversal}

The present invention relates to a city bus operation control method, and in particular, the bus operation information between the bus and the central control room (management room) and the bus platform to exchange the wireless transmission and reception to make the bus operation efficient and safe and at the same time the driver and passengers It is intended to provide convenience to people.

Conventionally, methods for managing bus operation have already been devised and executed, but this is only collected by simple information such as bus operation time, starting and ending time, and driver's working status. As there is no management of driver's violent driving such as speeding of a running bus, departure of the bus, overtime and stop time, there is a problem that a number of safety accidents occur as well. Even though there are customers on the platform, there are many passenger complaints by just passing through or deliberately delaying, delaying, and displacing the service, and a method using satellites has been proposed to solve this problem, but it is too expensive to achieve popularization. There is a problem.

The present invention is to install the transmitter, the receiver in the bus, the central control room, the platform, respectively, to solve the existing discontinuities as shown above, so that all the bus operation information can be shared with the accompanying drawings. same.

1 is a block diagram to help understand the present invention.

A wireless data transmission and reception system is installed in a central management computer (CMC) in a central control room (office) to provide a traffic information collector (TIC) installed on a city bus and a location information generator (PIG :) installed at a stop. At the same time, it can collect driving information wirelessly from Posion Information Generator, and at the same time, it can send data such as announcements necessary for bus operation to the driving information collector and location information generator, and the operation information collector (TIC) and location generator. (PIG) also allows you to exchange data with each other.

Hereinafter, the function of each device will be described.

The central control computer (CMC) processes and processes the information collected from the bus information collector (TIC) of all buses and the location information generator (PIC) of the platform to be output to the monitor screen or printer.

The location information generator (PIC) sends the stop location information and the passing time of the front car to the FM and reports the estimated passing time of the bus from the bus information collection device (TIC) of the bus. It also informs you by text and remembers the arrival, waiting and departure times of the vehicle ahead and controls the communication protocol.

The operation information collector (TIC) is installed inside the bus and collects the location information and the passing time of the preceding vehicle from the location information generator (PIC) of each stop during operation, and reports the passing time of the passing vehicle to the location information generator (PIC). It senses the driving speed from the VFD display (VFI) and receives the voice information notification from the central control computer (CMC) through the VMC (CFI) or the voice synthesis circuit. It has a function of broadcasting.

In the central control room, the information necessary for bus operation management can be obtained from the TIC.

* Date of Service

Determine driving date by built-in real time clock (RTC)

* Stop passing time, parking time, stop time

Whenever you arrive at the stop, the TIC receives the signal from the location information generator (PIC) and stores the pass, parking and stop time of the stop in the backed up SRAM using the built-in real-time clock (RTC). Pass it to location information generator (PIG) for confirmation.

* Pass through time and stop time

Obtained from the location information generator (PIG) when passing through the stop.

* Starting time and ending time

At the starting point, the clock of the driving information collector (TIC) is calibrated with the reference time broadcast from the central control computer (CMC), and at the same time, the passing time is obtained. do.

* Detect route deviation during operation

If the signal is not received by the position information generator (PIG) in the given order, it is regarded as a departure and records the departure time in RAM.

* Travel time and mileage

△ Time of flight = end arrival time-start departure time

△ Total driving distance = route distance * number of trips

△ Running distance = (diameter of wheel * Encoder Speed

* Rapid braking, sudden start detection

△ Calculate acceleration to detect sudden braking and sudden start.

Acceleration a = (V2-V1) / t2-t1 ㎨)

When the permissible acceleration / deceleration is stored in the flash memory and the allowable acceleration / deceleration is exceeded, it is regarded as sudden braking or sudden acceleration.

△ Rapid braking Rapid oscillation is a problem that occurs at short distance, so count the pulse of the encoder and calculate the exact speed change (instantaneous speed).

ΔThe instantaneous speed ds / dt is the number of encoder pulses for one second of instantaneous speed x the distance traveled for one pulse (m / s).

* Number of people getting on and off

△ Check the getting on and off with the sensor using the infrared modulation wave at the entrance and exit.

Speed warning

△ The maximum allowable speed is stored in flash memory and it is regarded as overspeed when the allowable value is exceeded.

△ In case of speeding, keep in the hard disk of CMC for each driver.

* Breakdown vehicle

In case of a faulty vehicle, the fault indication data is transmitted to the central control computer (CMC) when the fault table indicates a fault by turning on the toggle switch.

△ In case that it is not possible to send / receive the fault indication data, the faulty vehicle is manually input by the administrator to the central control computer (CMC).

△ The failure situation is input by the central control computer (CMC) manager and the situation is stored on the hard disk.

* Suspension vehicle

△ If a vehicle which should be out of the CMC communication area is found to be in the parking lot on the CMC, it is regarded as a non-operation vehicle.

△ Vehicle information in operation is automatically stored in the hard disk.

The management status of the information obtained from the TIC is as follows.

△ Vehicle operation status by vehicle (vehicle number, driver's name, stopover, waiting, opening time, number of new doors, operation time, number of passengers, route, departure, arrival time, suspension vehicle)

Driving trajectory map (Graph interval, speeding fact, intentional delay, electrodeposition)

△ Driver Placement Chart (Working Status by Vehicle, Shift Time of Morning and Afternoon Workers, Operation Status)

△ Monthly traffic status by line

△ Number of times of operation (operation cycle, speeding, sudden stop, opening run, total passengers)

△ Monthly operation status by route (Monthly route operation time and violation indicators, number of trips, average time, operating vehicle, undersized, rapid acceleration, sudden stop, opening run, total passengers)

△ Service Status by Vehicle

△ Driving line operation status

△ Vehicle Status

△ Notice of delivery by vehicle (Voice notice, letter notice, notice to all vehicles, notice to specific vehicle, delivery confirmation, delivery time)

△ Delivery Timetable by Route

△ Traffic time for each vehicle

For each device, the central computer (CMC) uses the existing Internet TCP / IP protocol, but for security, the transmission and reception address (IP) uses 16 bits, and the operation information collector (TIC) and the location information generator (PGI). ) Uses its own protocol rather than TCP / IP for security and speed.

The database structure of each device is as follows.

The data received from the bus and the TIC are transmitted wirelessly to the relational data and the base data (RDBMS) as input files.The car number and the boarding passenger are 2 bytes each, and the arrival and departure times for each platform are 2 bytes. The number of platforms and the speed graph data per minute are 200 bytes.

* Output data structure from driving information collector (TIC) to location information generator (PGI)

byte 1 byte 2 byte 3 byte 4 byte 5 the car's number On passing Passage Pass second

* Output data structure from location information generator (PGI) to driving information collector (TIC)

byte 1 byte 2 byte 3 byte 4 byte 5 byte 6 platform Front vehicle number On passing Passage Pass second

Therefore, in the present invention, the central computer (CMC), the location information generator (PLG) and the operation information collector (TIC), which are capable of transmitting and receiving, are installed on the bus and the platform, respectively, in front of the management room through the central computer (CMC). Passing time and week / intermediate time, checking the number of people getting on and off, the driver's status by vehicle, the timetable of each vehicle's route, the timetable of the operating vehicle's operation by route, the driver's notice delivery, the stop passengers, the arrival time of the passing vehicle when waiting (Voice, Text), In-car announcements are possible, Vehicle route planetary plate auto-changing function, and information can be managed and supervised, such as providing a route to the driver when the route changes, so that the operation of the city bus can be operated more safely and efficiently. It can provide passengers with the best service by solving the inconveniences of passengers caused by bus delays, electrodepositions, bus stops, sudden start-ups and sudden braking. In addition, it is possible to inform the driver of each bus the road traffic information by voice and text in the office, so that the smooth communication of the traffic can be achieved.

Claims (1)

A wireless data transmission and reception system is installed in a central management computer (CMC) in a central control room (office) to provide a traffic information collector (TIC) installed on a city bus and a location information generator (PIG :) installed at a stop. At the same time, it can collect driving information wirelessly from Posion Information Generator, and at the same time, it can send data such as announcements necessary for bus operation to the driving information collector and location information generator, and the operation information collector (TIC) and location generator. (PIG) also controls the operation of city buses by allowing each other to send and receive data.