JPS6079496A - Running condition managing system for vehicle - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a travel management terminal device that senses a traveling vehicle and transmits a vehicle sensing signal, and a travel control terminal device that receives a vehicle sensing signal transmitted from the travel management terminal device. The present invention relates to a vehicle driving state management system including a management solid device.

<Prior art and points in between> Conventional vehicle running condition management systems detect running vehicles, measure their speed or distance between vehicles, and issue speed warnings or distance warnings as necessary. It is equipped with a terminal device and a driving management solid device that receives a vehicle sensing signal transmitted from the driving management terminal device, and the signal sent from the driving management terminal device to the driving management solid device includes a vehicle detection signal. In addition to the sensing signal, a speed signal indicating the traveling speed of the vehicle and a warning signal indicating whether a speed warning or distance warning has been performed by the driving management terminal device are given to the driving management solid device. For example, the number of speeding vehicles is counted. However, in such a driving state management system, the inter-vehicle interval time is given to the driving management solid device.
The problem was that the driving status of the vehicle could not be grasped in real time.

<Object of the Invention> The present invention has been made in view of the above-mentioned points, and an object of the present invention is to enable a real-time driving state of a vehicle to be accurately grasped in real time using a driving management solid-state device.

<Structure and Effects of the Invention> In order to achieve the above-mentioned object, the present invention includes a storage means for storing the vehicle sensing signal in the driving management solid device that receives the vehicle sensing signal transmitted from the driving management terminal device. and a calculation means for reading out the vehicle sensing signals stored in the storage means at predetermined time intervals and calculating a time interval between the vehicle sensing signals, and a display means for displaying the output from the calculation means. There is. Therefore, according to the present invention, it is possible to know the inter-vehicle interval time using the driving management solid device, thereby making it possible to grasp and monitor the driving situation of the vehicle in real time.

<Description of Examples> Examples of the present invention will be described in detail below with reference to the drawings. FIG. 1 is a simplified configuration diagram of one embodiment of the present invention. The running state management system of the vehicle includes a plurality of running pipes p1 and 2 for sensing the distance between running vehicles;
and a driving management solid device 3 that receives vehicle sensing signals from these driving management terminal devices 2. Travel management terminal equipment f
The IF 2 is equipped with an ultrasonic transducer as a vehicle sensor, detects the distance between two vehicles, sends a vehicle detection signal to the travel management terminal device 3, and measures the speed and distance between vehicles. Then, if necessary, speed warnings and distance warnings will be given by means of τ. The speed of the traveling vehicle and whether or not a speed warning and warning for inter-vehicle distance have been issued are transmitted to the driving management solid device 3 as a speed signal and a warning signal together with a vehicle detection signal. In this embodiment, the travel management terminal device 2
The vehicle is equipped with two vehicle snoring detectors, each of which detects vehicles traveling in different lanes.

Travel management ψ111) Vehicle sensing signal bow S in terminal device 2
+ is shown in FIG. 2a, and the driving management solid device 3 is given the vehicle 11 knowledge signal S2 which is shifted by the period T shown in FIG. For example, this period T1 is 30
It is 0 milliseconds. Vehicle sensing signal S1. S2 becomes high level when a vehicle is detected.

A speed signal S3 indicating the speed of the vehicle is shown in FIG. 2C, and the speed warning signal and the distance warning signal are signals S4 having the same timing as shown in FIG. 2D. The high level period T2 of the signal S4, ie, the period during which the warning is issued, is, for example, 100 milliseconds or more. Note that the period T3 in FIG. 2 is, for example, 400 milliseconds.

The driving management solid device 3 that receives these signals transmitted from the driving management terminal device 2 includes an input/output means 4, a data memory 5 as a storage means for storing vehicle sensing signals, and a storage device in the data memory 5. It includes a CPU 6 as a calculation means for reading out the vehicle sensing signals at predetermined time intervals and calculating the time interval between the vehicle sensing signals, and a display means 7 for displaying the output from the CPU 6.

In the data memory 5, signals transmitted from the travel management terminal device 2 are stored in association with eight characters A to G, as shown in FIG.

Each character A-G is further divided into four characters D+-D4. Running '+ri of this embodiment, ・Real terminal device 2
has two vehicle alarms as mentioned above, and a third
In the figure, vehicle detection (i No. 1, speed signal 1, etc. is a signal based on one vehicle sensor, vehicle detection signal 2, speed 4; 4 bow, 2, etc. is a signal based on the other vehicle sensor. For example, the vehicle detection signal from one vehicle sensor is stored in Dl of character A, and the vehicle detection signal from the other vehicle sensor is stored in Dl of character B. Furthermore, characters F and G have , a status signal of the travel management terminal device 2, such as a warning plate abnormality signal, etc., are stored.

The CPU 6 as a calculation means reads each signal stored in the data memory 5 at predetermined intervals, for example, every 50 milliseconds, and turns the signal ON (/1 level) 10FF.
(low level), the vehicle sensing signal ON continuous counter 8 and the vehicle sensing signal O in the sensing determination area shown in FIG.
FF continuous counter 9, speed warning 11 bow ON counter 1
0, and are counted by the distance warning signal ON counter 11, respectively. These counters 8.9, 10. Based on the J1 value in II, determine how many milliseconds each signal has been in the ON or HOFF state, and further calculate the time interval between vehicle detection signals, that is, the inter-vehicle time, according to flowchart 1 described later. Output.

The vehicle sensing determination flag 12 in the sensing determination area of the CPU 6 is turned ON when it is determined that a vehicle has been detected, and the travel processing flag 13 is turned ON when sensing of one vehicle is completed.
be done. When this travel processing flag 13 is ONL,
Assuming that the sensing is completed, data such as speed is collected as described below.

A display means 7 for displaying speed, inter-vehicle time, etc. output from the CPU 6 is shown in FIG.
In addition to the speed of the previous vehicle and whether there was a warning for that vehicle, the inter-vehicle time with the latest vehicle is 5.
The data is displayed in units of 0 milliseconds, and the latest vehicle data is similarly displayed on the display unit 15. In this example,
In order to eliminate the influence of noise when each signal stored in the data memory 4 is read out every 50 milliJ seconds to make a judgment, if the signal remains ON or OFF for a certain period of time, for example, 100 milliseconds. The final judgment will be made only by

Next, the operation will be explained based on flowchart 1 in FIG. Starting the processing of vehicle sensing signals, the steps used to be:
It is determined whether the vehicle sensing signal is ON this time, and if it is ON, the process moves to step n2, and it is determined whether the vehicle sensing signal was ON last time (50 milliseconds ago).

If it is determined in step 1]2 that the vehicle sensing signal is ON, the process moves to step n3, where 1 is added to the vehicle sensing signal ON continuous counter 8, and the process moves to step n6. Step 1] If it is determined that the vehicle detection signal is not ON this time, step 1
] 4, it is determined whether the previous vehicle sensing signal was OFF. If it is determined in step n4 that the previous vehicle sensing signal was OFF, the process moves to step +15, and the vehicle sensing signal is turned OFF.
Add 1 to the F continuous counter 9 and proceed to step n6. In step n6, it is determined whether the speed warning signal is ON, and if it is not ON, the process moves to step +17, and it is determined whether the distance warning signal is ON. If it is determined in step n6 that the speed warning signal is ON, the process moves to step nlo.
Add 1 to speed warning signal ON counter 1o and step 1
] Move on to 7. If the inter-vehicle warning signal is not ON in step n7, the process moves to step rl12, and the vehicle detection determination flag 1
2 is OFF.

If it is determined in step 117 that the distance warning signal is ON, the process moves to step 1]11, where 1 is added to the distance warning signal ON counter 11, and step! ]Move on to 12. step n
At +2, the vehicle intelligence determination flag 12 is OFF, that is, l
If it is determined that the vehicle has not been detected by the judgment jf times (50 milliseconds ago), the process moves to step n13, where 50 milliseconds is added to the latest inter-vehicle time on the display section 15 of the display means 7, and the process moves to step n+4. At step +114, the vehicle detection signal is ON for 100 consecutive times! It is determined based on the vehicle detection signal ON continuous counter 8 whether it is longer than 1 seconds or not, and if so, the process moves to step n15, and it is determined whether the latest inter-vehicle time is 100 milJ seconds or more. If the latest inter-vehicle time is 100 milliseconds or more, the process moves to step 1116, where it is determined that a vehicle is being sensed, and the vehicle manufacturer/knowledge determination flag 12 is turned on. In this way, in order to eliminate the influence of noise, the latest inter-vehicle time is set to 100 milliseconds or more.
When the time period continues for 100 milliseconds or more, it is determined that a vehicle is being sensed, and the vehicle sensing determination flag 12 is turned ON.

Thereafter, the process returns to step n1.

When it is determined in step +112 that the vehicle detection determination flag 12 is not OFF, that is, the vehicle detection determination flag 12
is ON, the process moves to step n+7, where it is determined whether the vehicle sensing signal has been OFF for more than 100 milliseconds continuously.
Step n18 transfers the latest warning and speed on the display section 15 of the display means 7 to the latest one on the display section 14, and moves on to step n19, where the latest warning and speed on the display section 15 of the display means 7 are transferred to the previous one. In order to extract the pressure, 100 milliseconds is subtracted, the data is transferred to the latest one on the display section 14, and the process moves to step n2Q. step r120
Then, the current speed signal is set to the latest speed on the display unit 15, and the process moves to step n2+, where it is determined whether the speed warning signal is continuously ON for 100 milliJ seconds or more, and if so, the process moves to step n22. . If it is determined in step n21 that the speed warning signal is ON for 100 milliseconds or more continuously, the process moves to step n28, where it is determined that there is a speed warning and the latest speed warning is set on the display section 15. In step n22, it is determined whether the inter-vehicle distance warning signal ON is 100 milliJ seconds or more, and if not, the process moves to step n23, where the speed warning signal ON counter 10 and the inter-vehicle distance warning signal ON counter 11
is reset, and the process moves to step n24.

If it is determined in step n22 that the distance warning signal is ON for 100 milliseconds or more continuously, the process moves to step n29, where it is determined that there is a distance warning and the latest distance warning is set on the display unit 15. In step 1] 24, the latest inter-vehicle time on the display section 15 is set to 100 milliseconds, and the process moves to step 1125. In step nzs, the vehicle detection determination flag is turned off.
Then, the process moves to step n26. In step n26, the travel processing flag is turned on and the next processing, such as totaling, is performed. At step n+7, the vehicle detection signal is OFF continuously.
If it is determined that it is not longer than 00 milliseconds, go to step n1 again.
Return to

[Brief explanation of drawings]

FIG. 1 is a simplified configuration diagram of an embodiment of the present invention, FIG. 2 is a waveform diagram of a signal transmitted from the travel management terminal device 2, FIG. 3 is a diagram for explaining a data memory, and FIG. The figure is CP
A diagram showing the sensing determination area of tJ 6, FIG. 5 is the display means 7
FIG. 6 is a flowchart for explaining the operation. 2...Traveling management terminal device, 3. Old...Travel management solid device, 5...Data memory, 6...CP
U, 7...Display means. Applicant Tateishi Electric Co., Ltd. Agent Patent Attorney Kazuhide Okada Figure 2, Figure 3, Figure 3, Figure 4

Claims (1)

[Claims] (1) The driving management device includes a driving management terminal device that senses the distance between traveling vehicles and transmits a vehicle sensing signal, and a driving management solid device that receives the vehicle sensing signal transmitted from the driving management terminal device; The device includes a storage means for receiving and storing vehicle sensing signals, a calculation means for reading out the vehicle sensing signals stored in the storage means at predetermined time intervals and calculating a time interval between the vehicle sensing signals, and a calculation means for calculating the time interval between the vehicle sensing signals. 1. A vehicle running state management system comprising: a display means for displaying the output of a vehicle;