JPS59181752A - Vehicle moving state display device - Google Patents

Abstract

PURPOSE:To execute polling at an extremely high speed by executing the polling basing on whether a data stored in a main memory means in a base station is new or not, and whether a data quantity exceeds a prescribed quantity or not. CONSTITUTION:While ''Is there a data display request?'' from a keyboard 2 is ''NO'', a device is held as it is. When ''Is there a data display request?'' becomes ''YES'', a command is outputted from the keyboard 2, a data stored in a main memory means 10, namely, ''Is there the car concerned in an object area?'' is decided. A data from a comparing means 6 is always counted by a counter means 12, and also stored in a temporary storage means 13, therefore, when a collected data in the counter means 12 does not exist, ''NO'' is obtained, and the operation is shifted to a ransmitting operation of a polling signal by the limiter means 14 and the command from the keyboard 2. When a data in the counter means 12 exists, ''YES'' is obtained, and subsequently, ''Is its data new or not?'' is decided.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention provides a vehicle dynamic display that enables a central base station to grasp the status of a large number of vehicles scattered within a certain area and whose positions and dynamics change irregularly. It is related to the device. For more details, please refer to taxi companies,
Bus companies, inspectors, transportation companies, etc. manage a large number of vehicles, and it would be great if base stations could automatically collect and display the status of each vehicle, such as where and what each vehicle is currently doing. This is what I did.

Conventionally, three methods have been known to be viable for vehicle dynamic display devices, especially for taxis: (1) semi-automatic method (manual setting method), (21 distributed transmission method), and (3) distributed reception method. It is being

(1) As shown in Fig. 1, the business area of semi-automatic taxis is divided into several to several tens of blocks (A), CB), etc., and numbers are assigned to each block. When a customer orders a ride, the base station presses the corresponding district button. Then, a district-specific polling signal is emitted. This signal is received by all mobile stations (taxi radios), but among them, if the driver has pressed the button for that area, it matches the polling signal, and the car is empty, the mobile station will send the taxi to the taxi. The number calls.

The base station receives this information, displays it, and issues a dispatch order from there.

(2) Distributed transmission method operation, the Nashi region will be divided in the same way as above. As shown in FIG. 1, a sign post (a) (1)) (small transmitter) is set at the center of each of the divided blocks (A), (B), and so on.

When vehicle (1) enters point (A1) from outside the business area, it memorizes the area (A) of the nearest signpost Ha) and then moves to point (A2).
Even if you pass through the point, keep the area (Al).Next, when you move to point (B1) in the area of another signpost Hb), the memory of position group No. 41 of the previous signpost) (a) will be erased. The position group (S (1) of the new signpos Hb)
Memorize 3+. In this way, each time the vehicle (1) moves, the position group signals (A), (B), etc. of the nearest signpost (aHb), etc. are stored. When the vehicle leaves the 4th area, the position group signal will be activated after a certain period of time (E
l) Erase at points. After the position group signal is stored in the mobile station in this way, the operation is similar to the semi-automatic system, in which a dispatch command is issued. In both the semi-automatic method and the distributed transmission method, position information is stored in the mobile station, and the corresponding vehicle returns its vehicle number in response to a region-designated polling signal from the base station.

(3) The distributed reception method business area is the same as the above (1) and (2) methods.
Divide into A, 1(B)... Each block (A) (
B) A distributed receiver for collecting vehicle number information is placed at the center of the vehicle, and this distributed receiver and the base station are connected by a dedicated circuit. Since the mobile station issues a car number signal when the car is empty, this signal is received by nearby distributed receivers, and the car number information is sent to the base station by wire. In this way, data on the location and vehicle number of the mobile station is collected. Regarding dispatch orders, see above (I
) (Same as the 2+ method.

Tsukil: Regarding the time slot during polling, the second
This will be explained based on the diagram.

When polling is performed by specifying the relevant area, empty vehicles within the relevant area will return their vehicle numbers, but there are multiple vehicles in that area. If these respond all at once, signal collision will occur and the base station will not be able to obtain correct information. As a countermeasure for this, as shown in Fig. 2, after the polling signal is sent, each vehicle has a unique response time (to~1, t, ~2, . . .
) to prevent collisions caused by simultaneous calls.

In the three methods mentioned above, especially in the case of taxis, data must be collected within a predetermined area by polling before issuing a dispatch order.
Because it takes 10 seconds, there were problems such as delays in dispatching dispatch orders and errors in polling operations during times of congestion.

The present invention has been made to solve the above-mentioned problems, and when collecting vehicle dynamics by polling, when storing the obtained data, the time at which the data was collected is also stored. At the same time, the stored data is checked before the next polling, and if the stored data is new data within a certain period of time and the amount of data exceeds a certain amount, the stored data is adopted and displayed. , old data is adopted after a certain period of time).Also, when new data does not reach a certain amount, new polling is performed and that data is displayed, and the previous data is updated. It is.

Hereinafter, one embodiment of the present invention will be described based on 131 planes.

In Figure 3, (2) is the keyboard that is operated when requesting the display of vehicle dynamic data;
2) is coupled to a transmitter (4) via a coding means (3) for encoding and further coupled to a transmitting antenna (5).
) is combined with Further, the keyboard (2) is
It is coupled to comparison means (6).

Next, (7) is a receiving antenna that receives a signal from a mobile station, this receiving antenna (7) is coupled to a receiver (8), and this receiver (8) is coupled to a display device (9). and is coupled to said comparison means (6) via main memory means αO) for collected data. A timer means (11) is connected to the input side of the main memory means (00) for decrementing the collection time data of the main memory means (10). The comparison means (6) is coupled with a collected data counter α2) and a temporary storage memory means 03) for temporarily storing the collected data. The counter means (1z7 is coupled to the data amount limiter means side,
This limiter means (I4) is connected to the coding means (3).
) and said temporary storage memory means 03)
is coupled with the output side of CI'1. It is coupled to said display device (9) such as T.

Next, the operation of the above configuration will be explained with reference to the flowchart of FIG.

From the keyboard (2), select “Is there a data display request?”
During "O", it remains on standby. When "Data display request" becomes [YE'SJ], a command is issued from the keyboard (2) to check the data stored in the main memory means (10), that is, "Is there a corresponding vehicle in the destination area?" is determined. ratio! Since the data from the bite means (6) is constantly counted by the counter means (12) and stored in the temporary storage memory means (I3), the data from the counter means (12)
When there is no collected data in i, it becomes "NOJ" and the operation moves to transmitting a polling signal according to commands from the limiter means 04) and the keyboard (2).Counter means 02)
If there is data within, the result is [-YESJ, and then it is determined whether the data is new or not. That is, the collection time data of the previous collection in the main memory means 00) is successively decremented by the output of the timer means 0]). If the data has passed for a certain period of time (for example, 3 minutes), it is determined that there is a high possibility that the vehicle is in the actual state or has moved to another area, so this is not adopted, and the counter means (counting by 12) is used. Therefore, we move on to the next operation of transmitting a hauling signal.
If it is within 1 minute), answer ``YESJ'' and then ask ``Whether the collected data of the corresponding car is more than a certain amount (for example, 3 cars).''
is determined. If there are less than 3 vehicles, there is a high possibility that the remaining vehicles are in operation or have moved to other areas, so the system becomes OJ and moves on to transmitting a polling signal. If there are three or more units, the answer is ``YES'', and the contents of the limiter means side and the gate means (151, temporary storage memory means 03) are displayed on the display device (9).

If there is no corresponding vehicle in the target area, if the collected data is old, or if the collected data is less than a certain amount, the transmitter (4) and transmits a polling signal from the transmitting antenna (5). Data is transmitted from the moving vehicle by this polling signal, and the data from the vehicle is received by the receiver (8) via the receiving antenna (7), and the received dynamic collected data is stored in the main memory along with the collected time data. The data is stored in the means (10) and displayed on the display device (9).

In the above embodiment, vehicle dynamics are displayed by polling by district, but the present invention is not limited to this. Vehicles may be divided into groups, and vehicle dynamics may be displayed by polling for each group. It can also be used in cases.

As described above, the present invention is configured to perform polling based on whether the data stored in the main memory means in the base station is new and whether the amount of data is above a certain value. If Koichi% is sufficient, it is enough to read it, and only when the data becomes old, poll the mobile station and replace it with new data. Therefore, polling can be performed at extremely high speed and the number of polling operations is small. By the way, if you poll like before,
A:'-! The I-ing time used to take 6 to 10 seconds, but with the present invention, the time was less than &-J: 0.1 seconds.

[Brief explanation of the drawing]

Fig. 1 is an explanatory diagram of the vehicle status when the business area is divided into multiple blocks, Fig. 2 is an explanatory diagram of time slots during polling, and Fig. 3 is an embodiment of the vehicle dynamic display device according to the present invention. The block diagram shown in FIG. 4 is a flowchart. (11... Vehicle (mobile station), (2+... Keychain, (3)... Coding means, (4)... Transmitter, (5)... Transmitting antenna, (6)... means of comparison,
(7)...Receiver (Th antenna, (8)...Receiver,
(9)... Display device, (101... Main memory, (1
,+1...Timer means, (12(...Kakunta means, (13)...Temporary storage/memory means, (141...
・Limiter means, 0 act...gate means. Patent Applicant Z.C.I.L. Co., Ltd. Representative Patent Attorney Shun Furutsu Same as above Patent Attorney Kao-Yuu No. 1
Diagram 2nd factor

Claims (1)

[Claims] (1) The base station transmits a polling signal to the mobile station, and the base station receives response signals from mobile stations within a predetermined area.
A vehicle dynamic display device that collects and displays dynamic data of a mobile station, comprising: main memory means for storing dynamic data collected during polling together with collection time data; and timer means for decrementing the collection time data of the main memory means. , a means for determining whether the dynamically collected data is new or old after a certain period of time has elapsed prior to the next polling, and a temporary storage device for temporarily storing the dynamically collected data if it is new. storage memory means; means for determining whether the amount of collected dynamic data is greater than or equal to a preset certain amount; A vehicle dynamic display device comprising: display means for displaying collected data; and polling means for transmitting a polling signal to a mobile station if the amount of dynamic collected data is below a preset constant.