JPS61176217A - Inter-vehicle communication equipment - Google Patents

Abstract

PURPOSE:To confirm the position of a target vehicle momentarily or when necessary through a terminal equipment, etc. by combining the radio intervention of a question unit and the automatic answers of an answer unit. CONSTITUTION:An identification controller C of a data processing part 9 of a question unit stores the question signals temporarily in an internal memory and then supplies them to a call command part 10 when necessary. The part 10 converts the question signals into microwave band carrier signals and supplies them to a transmission part 11. The part 11 amplifies those carrier signals up to a proper level of transmission power and radiates them into the air via an antenna 12. These transmitted signals are received by an antenna 1 of an answer unit and supplied to a question signal selector 3 after detecting by a reception part 2. The selector 3 compares the input question signals successively with its own code signals stored previously. Then the selector 3 transmits the coincidence signal to a data processing part 4 when the coincidence is obtained from said comparison.

Description

[Detailed Description of the Invention] (Industrial Application Field) The present invention is suitable for the operation management of not only long-distance trucks and buses that regularly travel on expressways, but also all types of vehicles equipped with the system. This is related to inter-vehicle communication equipment.
The main purpose is to always know the whereabouts of managed vehicles.

(Prior art and its disadvantages) Conventionally, the current location of a vehicle that has entered an expressway has been confirmed by a unilateral phone call from the driver of the vehicle being managed from an appropriate telephone facility along the highway. there was. However, if they were stuck in a traffic jam, there was no way to contact them and they were left with no choice. In addition, radio communication with Kibe has the disadvantage that its service range is narrow and specific, so it has the disadvantage that it is limited to activities within a specific area, such as taxi radio.

(Problems to be Solved by the Invention) The present invention provides a device that can confirm the location of a target vehicle over a wide range of routes from moment to moment or when necessary using a terminal installed in a wooden part, and furthermore, it can be automated. It is something to measure.

(Example configuration to solve the problem) The present invention will be explained in detail with reference to FIG.

W indicates a high-speed route, and S indicates a median strip. Interrogators Q1, Q2, etc. are placed at a predetermined distance from the median strip S.
・Has been installed. This interrogator group is connected to one identification control device C. Further, a group of user terminals UUU . . . are connected to the identification control device C via a suitable intermediate facility. Optical fibers will likely be used to transmit large amounts of data over considerable distances between these devices. Optical fiber communication is also advantageous in terms of communication speed and noise countermeasures. However, a well-known leaky cable transmission/reception method may be employed.

On the other hand, trucks T1 and T2 traveling on the road line...
Transponders A1, A2, . . . An are loaded on Tn, etc.

'' In a two-legged device, the operation will be explained when a user wants to know the current position of tracks T1 and T2 belonging to the user from the terminal device or the like. User y operates his own terminal U, and user ro operates his terminal U2 to track T1.
When a predetermined recognition code is input into T2, the identification control device C sequentially supplies these recognition codes to the questions mQ1, Machi, and Qn for a fixed period of time through processing by an internal computer.

Each interrogator sequentially fires into the air the recognition code (e.g., coded) for a predetermined period of time. Note that the transmission power is set so that the effective reception areas between adjacent interrogators do not overlap significantly with each other. In the case of the figure, the truck T1 is sent to the transponder A1 at the moment when the transponder Q1 transmits its interrogation signal.
You will receive this. Then, the transponder immediately returns a response signal containing a self-defined recognition code. The returned response signal is received by the interrogator Q1 and sent back to the identification control device C.

The identification control device C recognizes the returned interrogator and transmits the current position signal of the truck T1 to which it belongs to the user U1. At this time, if the odometer signal generated within the vehicle is included, it is possible to know the detailed current position within the interrogator installation interval. The terminal device U1 converts the position signal into a predetermined display signal and displays the position on a printout or a cathode ray tube display or the like.

In addition, in the above example, the connection i between each interrogator and the identification control device is
<Because they are parallel, the identification control device performs one communication with each interrogator using a switch, but when connected via a bus branch line, a dedicated code signal is assigned to each interrogator and a predetermined code signal is assigned next to these code signals. It is necessary to send a question signal.

, Also, the answering machine is 1. In addition to returning Question No. 9, you can also attach the message information.

(Configuration and operation of transponder and interrogator) As shown in Fig. 2, the transponder has a receiving antenna l, a receiving section 2,
, question signal sorter 3, data processing section 4, print output section 5
, a data input section 61, a transmitting section 7, and a transmitting antenna 8. As shown in FIG. 3, the interrogator includes a data processing section 9, a call command section 10, a transmitting section 11, a transmitting antenna 12, a receiving antenna 13, a receiving section 14, a response signal processing section 15, and a data processing section 9. configured.

In the above device, the data processing section 9 of the interrogator temporarily stores the interrogation signal sent from the identification control device C in FIG. The paging command section 10 converts the interrogation signal (digital signal) into a microwave band carrier signal and supplies it to the transmitting section 11 . Transmitter 1
1 increases this until it reaches an appropriate transmission power and transmits it to the antenna 1.
2 radiates into the air. This signal is received by the antenna 1 of the transponder shown in FIG. 2, detected by the receiver 2, and supplied to the interrogation signal selector 3. In the interrogation signal selection 4!13, the input interrogation signal is compared with the stored own code signal, and if they match, a matching signal is sent to the data processing section 4. The data processing section 4 has a predetermined number of memory circuits, and information to be transmitted from the track side to the wood section is input in advance from the keyboard of the data input section 6. The data processing section reads out the transmission information and its own recognition code from the storage circuit when the output from the interrogation signal sorter 3 is manually input, and sends it to the transmission section 7. The transmitter 7 modulates microwaves using these signals and emits them from the antenna 8 as a response signal.

If there is a message transmitted from Kibe among the signals inputted from the interrogation signal sorter 3, the Ichiriki data processing section 4 prints it out as a printout 5.

The response signal from the transponder reaches the antenna 13 of the interrogator, and after being detected by the receiving section 14, the response signal is sent to the response signal processing section 15.
The signal is converted into a digital signal and supplied to the data processing section 9. The data processing section 9 temporarily stores these digitized response signals internally and transmits them to the identification control device C at a timely manner.

(Other Embodiments) When carrying out operation management according to the present invention over a long-distance route, the network consisting of the identification control device C and the interrogator groups Q1, Q2, etc. in the embodiment described in 1-1 is connected to each interchange. It may also be possible to connect to one user terminal via a central control device installed between them and controlling the plurality of identification control devices C all at once. In this case, the search speed can be improved by instructing the route section from the user's terminal and by allowing the vehicle to register its own recognition code at each gate before searching.

Further, the response signal may simply be a signal whose presence can be recognized (common to all military forces), and in this case, it is sufficient to process the response signal in association with the interrogation signal during signal processing.

Furthermore, when transmitting interrogation signals from the entrance gate,
For example, by adding a military call code signal that has concluded an automatic toll payment contract and receiving response signals from all applicable vehicles, the subsequent toll collection work at the exit gate can be omitted. It is also possible to automatically collect tolls.

(Effects of the Invention) As described above, the present invention combines wireless mediation using an interrogator and automatic response using an answering machine, so that the headquarters can instantly know the current location of the affiliated vehicle at any time. Also, since the interrogator is driven in a time-division manner, it can communicate with many vehicles using one type of radio wave without interference. Moreover, compared to the direct communication method using radio equipment, users can maintain reliable communication without relying on the responder's discretion by investing in inexpensive equipment, and can perform operation management over a wide range of routes.

[Brief explanation of the drawing]

FIG. 1 is a system diagram for explaining the present invention in detail, FIG. 2 is a block diagram showing a configuration example of the answering machine in FIG. 1, and FIG. 3 is a block diagram showing a configuration example of the interrogator in FIG. 1. It is a diagram. Q1Q2...-11---Interrogator A0, A2
・・・・・・－－－111 answering machine TT・・・・・・－
111111 Vehicle 1' 2 C---------1---------Identification control device U
U --------------User 1 Terminal 1 2

Claims (1)

[Scope of Claims] 1) An interrogation signal that is installed at a predetermined interval in a lane at a predetermined interval and is controlled by an identification control device described later and is exclusive to a predetermined vehicle is emitted as a wireless signal to a predetermined range in the air, and from vehicles within the range. a plurality of interrogators that receive returned wireless response signals and transmit them to the identification control device; and a response signal that supplies interrogation signals for the vehicle to the plurality of interrogators in a time-division manner sequentially at fixed intervals. A road-to-vehicle communication device comprising an identification control device that receives a signal and identifies an interrogator, and a transponder that is mounted on the vehicle and that returns the response signal when receiving the interrogation signal exclusive to the vehicle. 2) The road-to-vehicle communication device according to claim 1, wherein the interrogator is also installed at an entrance or exit gate. 3) The interrogation signal of the interrogation machine installed at the entrance gate is
The road-to-vehicle communication device according to claim 2, characterized in that it includes a code corresponding to a specific contract, and the response signal includes a signal that responds to the code.