JPH1138025A - Vehicle operation control system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a vehicle operation control system capable of preventing the generation of invalid data by gasping the lifetime of a speed sensor adequately and previously. SOLUTION: A GPS receiver 19 is connected with an operation control meter main body 1 loaded on a vehicle 2, and a speed of vehicle 2 is calculated based on the positional information and time information obtained from a GPS satellite 20. A speed sensor 9 installed in the vehicle 2 is maintained and controlled by comparing the output thereof with the above calculated speed information. Therefore, the generation of error of the speed sensor can be always monitored and the lifetime thereof can be gasped previously.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vehicle operation management system for business vehicles such as trucks and taxis.

[0002]

2. Description of the Related Art For example, OA in the transportation industry extends not only in offices but also in vehicles such as trucks. In the trucking business, the vehicle is equipped with an operation management unit (also referred to as an on-board device). Automatically record on the freely mounted recording medium, after returning to the office, read the recorded content of the recording medium into a computer in the office, let this computer perform predetermined arithmetic processing, and various forms An operation management system that can be obtained has been introduced.

In the operation management system, sensor outputs from various sensors such as a speed sensor and an engine speed sensor provided in the vehicle are input to the operation management meter main body. Since the speed sensor has a mechanically movable part, it deteriorates and causes abnormalities with its use, and although its output gradually but irregularly occurs, it is output to an eye smaller than the actual speed. Become.

[0004] For this reason, conventionally, based on mileage and speed data collected in the operation control meter main body,
It has been determined whether an abnormality has occurred in the speed sensor.

[0005]

However, in the above-mentioned conventional method, when it is determined that it is time to replace the speed sensor, the speed sensor is considerably out of order, and the reliability of the data collected so far must be doubted. No longer. That is,
In the conventional method, the life of the speed sensor cannot be accurately grasped in advance.

SUMMARY OF THE INVENTION The present invention has been made in consideration of the above-mentioned matters, and an object of the present invention is to make it possible to accurately grasp the life of a speed sensor in advance and to generate invalid data. It is an object of the present invention to provide a vehicle operation management system capable of suppressing the traffic.

[0007]

In order to achieve the above object, a vehicle operation management system according to the present invention connects a GPS receiver to an operation management instrument main body mounted on a vehicle, and obtains position information obtained from a GPS satellite. The speed of the vehicle is calculated based on the time information, and the speed information obtained by the calculation is compared with the output of a speed sensor provided in the vehicle to maintain and manage the speed sensor.

In the vehicle operation management system having the above configuration, the output of the speed sensor can be constantly compared with the speed information of the vehicle obtained based on the position information and the time information obtained from the GPS satellite. It is possible to constantly monitor whether or not there is an error. Then, the deterioration of the speed sensor progresses in one direction, that is, progresses so that the value of the output speed always becomes smaller than the actual speed, so that the life of the speed sensor can be grasped in advance. . Therefore, for example, when an irregularity of the sensor output reaches a certain value, an alarm is generated, so that it is possible to accurately know the replacement time.
Maintenance can be performed rationally.

[0009]

Embodiments of the present invention will be described with reference to the drawings. 1 to 3 show one embodiment of the present invention. First, in FIG. 1, reference numeral 1 denotes an operation control main body provided near a driver's seat of a truck 2 as a vehicle. As shown in FIG.
It comprises a PU 3, a ROM 4, a RAM 5, a clock circuit 6, a power supply circuit 7, an interface 8, and the like. Information from various sensors provided on the truck 2, such as a speed sensor 9 and an engine speed sensor 10, and an appropriate key input device The work item information input by the input means 11 is configured to be recorded over time on a memory card 12 as a recording medium which is detachably attached to the operation management instrument main body 1. In FIG. 1, reference numeral 13 denotes a display unit formed on, for example, the front surface of the operation management meter main body 1.

In FIG. 1, reference numeral 14 denotes a computer as an information processing apparatus,
5, an input keyboard 16, a display 17, a printer (not shown), and the like. Reference numeral 18 denotes a reading device connected to the computer main body 15, which reads the contents of the memory card 12 to be inserted and reads the content of the memory card 12.
To send to. These devices 14 and 18 are installed, for example, in an office of a transportation company. The configuration so far is no different from the conventional vehicle operation management system.

Reference numeral 19 denotes GPS (Global Position).
GPS antenna 2 for receiving GPS data transmitted from a communication satellite 20 for an ioning system.
1 is mounted on a truck 2 on which the operation control unit main body 1 is mounted, and is connected to the operation control unit main unit 1 by a signal cable 22.

The GPS receiver 19 includes an arithmetic processing unit therein, and stores GPS orbit data (position data) from a plurality of GPS satellites 20 and GPS data such as satellite calendar (time data).
By receiving the data, it is possible to obtain position information such as the latitude and longitude of the track 2 at a certain point in time as data relating to the track 2 and to convert the time based on the satellite time of each GPS satellite 20 into units of year, month, day, hour, minute , The time information can be obtained, and the speed information of the truck 2 can be obtained from the relationship between the change in the latitude and longitude and the change in the time accompanying the movement of the truck 2.

The position information, time information and speed information obtained by the GPS receiver 19 are stored in the operation control main unit 1.
Is output at regular intervals (for example, every second).

The operation of the vehicle operation management system having the above configuration will be described with reference to FIG. The operation control meter main body 1 receives information on speed, engine speed, and the like from a speed sensor 9 and an engine speed sensor 10 provided on the truck 2, and inputs work item information by a key input device 11. The operation management console main unit 1 uses the memory card 1 based on the information.
2 is recorded (step S1).

The GPS data sent from the GPS satellite 20 is received by the GPS receiver 19 (step S2), and the position information on the track 2 is calculated by calculation.
Time information and speed information are obtained (step S3).

The speed information, together with the position information and the time information, is taken into the operation control main unit 1 at regular time intervals.
Then, in the operation control meter main body 1, the output of the speed sensor 9 is compared with the speed information obtained based on the GPS data, and it is determined whether or not there is a difference between them (step S4). If there is a difference that is larger than the predetermined value,
An alarm is output (step S5), and if there is no difference or if it is smaller than the set value, no alarm is output.

As described above, in the vehicle operation management system of the present invention, the output of the speed sensor 9 is constantly compared with the speed information of the vehicle obtained based on the position information and the time information obtained from the GPS satellite 20. Therefore, whether or not the speed sensor 9 is out of order can be constantly monitored. Since the speed sensor 9 deteriorates in one direction, the life of the speed sensor 9 can be grasped in advance. Therefore, for example, when an error in the sensor output reaches a certain value, an alarm is generated, so that the replacement time can be accurately known, and the maintenance can be performed rationally.

Then, at the beginning of the occurrence of the abnormality, the speed sensor 9
Is replaced with a new one, the occurrence of invalid data can be reduced as much as possible.

[0019]

As described above, according to the present invention, it is possible to constantly monitor whether or not the speed sensor is out of order, and it is possible to grasp the life of the speed sensor in advance. Therefore, for example, when an error in the sensor output reaches a certain value, an alarm is generated, so that the time for replacement can be accurately known, and maintenance can be performed rationally. As a result, accurate speed and distance information can always be obtained,
The reliability of the entire system is improved.

[Brief description of the drawings]

FIG. 1 is a diagram schematically showing an example of a vehicle operation management system according to the present invention.

FIG. 2 is a diagram schematically illustrating an example of a configuration of an operation control meter main body in the system.

FIG. 3 is a flowchart for explaining the operation of the system.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Main body of operation control meter, 2 ... Vehicle, 9 ... Speed sensor, 19
... GPS receiver, 20 ... GPS satellite.

──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. ⁶ Identification code FI G08G 1/00 G08G 1/00 D

Claims (1)

[Claims] 1. An operation control meter body mounted on a vehicle is provided with a GP.
Connecting the S receiver, calculating the speed of the vehicle based on the position information and time information obtained from the GPS satellites, and comparing the speed information obtained by this calculation with the output of the speed sensor provided in the vehicle. A vehicle operation management system, wherein the speed sensor is maintained.