JPS5833568A - Collector for information of moving body - 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 The present invention relates to a mobile information collection device for grasping the operation status of a mobile object by providing absolute time information to a ground-based roadside transceiver and adding time information to mobile object information. It is something.

Conventionally, there have been devices of this type as shown in FIGS. 1 and 2.

In Fig. 1, (1) is a mobile object, (2) is a Todai transceiver, (21) is a transmitter/receiver unit that transmits and receives mobile information, and (2) is a transmitter/receiver for transmitting and receiving mobile information.
2) controls this transmitting/receiving section (21) and also controls mobile object information. (23) Time N when generating Vi time information
The first part (24) is a power supply part. (3) is the Tojo antenna for transmitting and receiving mobile information between Tojo and the ground.

(4) is a street antenna. (5) Based on mobile information
1, (51
) A transmitting/receiving unit that transmits and receives iJ mobile information between ground and Hi, (5
2) is a control unit that controls the transmission/reception unit (51) and also controls the transmission of mobile information; A certain terminal section (54) is a power supply section.

(6) is a central processing unit that collects and processes moving object information detected by the roadside transceiver (5). (7) is a wired transmission line between this central processing unit (6) and the roadside transceiver (5).

In FIG. 2, (8) is mobile object information.

Next, the operation will be explained. When the mobile vJ body (1) travels and reaches the service area of the roadside transceiver (5),
Mobile object information is transmitted from an on-vehicle transceiver (2) mounted on a mobile object (1) to an on-road transceiver (5). in this case,
Mobile information transmitted from Higashijo to the ground includes the number 4, system, crew scent, and time.

The in-vehicle transmitter/receiver (2) includes a transmitter/receiver section (21) and an anatomy section (22).
), a power supply section (23), and a clock section (24), the time is output from the clock section (24) along with information such as tun 1h- set in the control section (22), and mobile information is transmitted and received. from section (21) to 4j-I: transmitted via antenna (3) 17. Next, the mobile information is transmitted from the car to the ground via the roadside antenna (4) and the roadside transmitter/receiver (5).
It consists of a transmitter/receiver (5) f(t), a transmitter/receiver section (51), a restraining section (52), a terminal section (53), and a power supply section (54).

The 441 body information is received by the transmitter/receiver (51), and sent to the controller (51).
52), transmission line (7
) to the central processing unit (6).

As a result, the central processing unit (6) collects mobile object information,
Can process calculations.

The conventional mobile information collection device 1 is configured as above, and the time information is transmitted from Higashijo to 1lb-1-, so the time i-1 function must be installed in 1f-1-11.
However, in-vehicle transceivers are complicated and expensive, and the service area for transmitting data between Tojo and the ground using guided communication is narrow, so when passing through the area at high speed,
Although it is desirable to reduce the amount of data transmitted, there are several disadvantages in that the amount of data transmitted increases by the amount of time information.Also, when clocks are provided between complex moving objects, it is difficult to match the absolute time of each. This method is difficult and has the drawback that it is useless if multiple pieces of moving object information with poor time accuracy are collected.

This invention was made in order to eliminate the drawbacks of the conventional ones as described above, and instead of providing a clock function to the in-vehicle transmitter/receiver between moving objects, the present invention uses a clock of a central processing unit that collects and processes information of moving objects. In order to set the time as standard time (absolute time), an absolute time 1n report is periodically transmitted by wire from the central Jffli device to the roadside transceiver, and with this absolute time information,
- Calibrating the clock of the transmitter/receiver, adding the absolute time information at the time when the transmitter/receiver received the mobile body information from Higashijo to the mobile body information, and transmitting it by wire to the central processing unit. This allows you to collect highly accurate moving object information!
(The purpose is to provide a 111 body information collection device.

Note that it is easiest to add absolute time J-1 when the data is imported into the central processing unit, but (1) if there are a large number of roadside transceivers or moving objects, the amount of data may be If a low-speed terrestrial line is used to configure the system at low cost, it will take time to import the data to the central processing unit, and the feeding time assigned by the central processing unit may differ from the actual bus time. This causes an error in the time the data was sent.

(2) When a failure occurs in the central processing unit, all data during the failure period becomes invalid.

There is a drawback. Therefore, in the present invention, by providing a function to assign an absolute time to a roadside transceiver (1) and a function to memorize it, it becomes possible to collect information on mobile objects that eliminates the above-mentioned drawbacks.

Hereinafter, one embodiment of the present invention will be described with reference to the drawings. In FIG. 3, ( ]) is a moving body, (2) a vehicle-mounted transmitter/receiver, (21) is a transmitting/receiving unit that transmits and receives mobile body information 1r1, and (
22) controls 11 this transmitting/receiving section (21), and
Control mobile information. (24) fz1 power supply section.

(On the 3rd, J +LF J is an antenna for transmitting and receiving mobile information between Higashijo and the ground. (4) is a roadside antenna. (5) It is a roadside transceiver that collects information on moving objects on the ground. (51) is a transmitter/receiver that transmits and receives mobile information (
+': 1 copy, (52) N transmitting/receiving unit (51) open side] and 11 copies for transmitting transfer U/F4C information.
(53) is the ink face part between the on-road transmission/reception (A (7M (!'i)) and the central processing unit (6) l'f:d
The child part (54) is a power supply part, and (55) is a time B1. (
6) i1': l-way - a central processing unit that processes the moving object information detected by the transceiver (5).

(61) is the CPU section, (62) is 1 control section, (63
), (64) is a terminal section, and (65) is a power supply section.

Next, the operation will be explained.

Now, when the mobile object ( ) reaches the service area of the roadside transceiver ( 5 ), the transmission and reception 134 (
5), the mobile object (71 mounted on υ) receives a polling signal from
It is assumed that mobile object information (8) shown in FIG. 4 is transmitted from the fc, tl'j-mounted transceiver (2) to the on-road transceiver.

In this case, since the Todai transceiver (2) does not have a clock section, the moving object information transmitted from the vehicle to the ground is shown in Figure 4: sea urchin, 111, system, crew scent, etc. The data does not include time information. Time information is absolutely necessary in order to understand the movement status of each mobile object (1). However, although there is a method of equipping moving vehicles with clocks, it is difficult to set the clocks to a certain standard time and to maintain accurate time.

In order to collect the time information of this invention, the transmitter/receiver (5) is equipped with a clock section (55), and absolute time information is added each time mobile information (8) from Higashijo is received. This is a device that collects information (including time information) on each moving body by transmitting data on the route shown in FIG. 4 and transmitting it to the central processing unit (6).

In addition, the time of the clock section (55) of the road transmitter/receiver (5) is periodically calibrated with the standard time of the clock section (63) of the central processing unit (6) in order to further improve accuracy. shall be. By doing so, the time information of the moving objects can be unified, and highly accurate moving object information can be obtained.

In other words, the tonne transmission/reception 784 mounted on the moving body (1)
In shallow (2), the control part (22) operates by transmitting and receiving polling signals from the ground, and the mobile information (2) shown in Fig. 4 is generated.
8) is transmitted to the ground via the transmitter/receiver section (2]) and the Tojo antenna (3). This mobile HV report (8) is transmitted via the roadside antenna (4) and the transmitting/receiving unit (51) to the control unit φ41 (5
2).

Next, the control section (52) takes in the time information from the clock section (55) and adds additional data (detected time information) to the moving body information (8) shown in FIG. The on-road transmission data (toward the center) shown in Figure 4 is transmitted from the terminal section (53) to the transmission line (7).
is transmitted to the terminal section (64) of the central processing unit (6). Furthermore, the information is input to the CPU section (61) via the control section (62), where it is arithmetic-processed and mobile object information is collected.

In the above embodiment, the case where there is only one roadside transceiver (5) has been explained, but a plurality of roadside transceivers are installed at key points to accommodate a large number of moving objects that move over a wide range. (1)
This is particularly effective in understanding the operating status of vehicles.

As shown below, according to the present invention, the on-board transceiver rM machine of each mobile vehicle does not incorporate the hour B1, but the roadside transceiver has an hour 1, and this clock is read by the central processing unit's hour d1 information. Since it is configured to be calibrated periodically, tun Jl −, t
There is no need to transmit time information between lj and lj, and there is no need to transmit time information between
There is a young fruit that reduces the amount of data transmitted between the two and allows highly accurate moving object information to be obtained.

[Brief explanation of drawings]

Figure 1 is a system diagram showing a conventional mobile information collection device;
The figure is a diagram showing the transmission status of data transmitted and received at the center of Higashijo, Road 1 of a conventional mobile information collection device. FIG. 3 is a system diagram showing a mobile news collection device according to an embodiment of the present invention, and FIG. 4 is a diagram showing the transmission status of overflow reception data on the vehicle, on the road, and in the center. (1)...mobile body, (2)...ton-mounted transceiver, (21
)...transmission/reception unit, (22)...control unit, (23)...
・Power source section, (24)・Clock section, (3)...Tun-L antenna, (4)...Road antenna, (5)...Road (9) upper transceiver, (51)...Transmitter/receiver section , (52)...1 part for use, (53)...terminal part, (54)...power supply part,
(55) Occasionally 1° section, (6) ... central processing unit, (6
1) -c PU section, (62)... Control 1ll1 section, (63)... Clock section, (64)... Terminal section, (6
5)・Power supply section, (7)...transmission line, (8)...mobile information. Note that the same symbol in I'N indicates the same or equivalent part. Agent Shin Kuzuno - (10)

Claims (2)

[Claims] (1) In a device that collects information regarding the operating status of a mobile object to a central processing unit via a roadside receiver, the information from the moving object collected by the roadway receiver is transmitted from a time device installed in the roadside receiver. A mobile object information collection device characterized by a cylindrical device that collects time information to a central processing unit. (2) The time device installed in the road receiver at 111 should be completed periodically based on the time information from the central processing unit.
A patented mobile object information collecting device 11 characterized by the following.