JP4034640B2 - Inter-vehicle communication device - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a vehicle-to-vehicle communication device , and more particularly to a vehicle-to- vehicle communication device that displays a waiting time for entering a vehicle facility.
[0002]
[Prior art]
There is a system that displays a waiting time at the entrance of a parking lot when the parking lot is full. In the parking waiting time display device disclosed in Japanese Patent Laid-Open No. 6-243396, when calculating the average of the entry time intervals of a predetermined number of vehicles, the weighted average is calculated by increasing the weight of the recent time interval and displayed. Thus, the average waiting time is displayed so as to be greatly influenced by the recent waiting time. Japanese Patent Laid-Open No. 11-312297 proposes an apparatus for measuring and providing a parking waiting time based on an entrance vehicle detection signal and an exit vehicle detection signal.
[Patent Document 1]
JP-A-6-243396 [Patent Document 2]
Japanese Patent Laid-Open No. 11-312297
[Problems to be solved by the invention]
Many parking facilities that provide waiting time for admission in the past provide waiting time near the entrance gate, and the waiting time for parking is unknown until the entrance is reached. For this reason, when the end of the queue is far from the entrance gate and the parking waiting time is not visible, it is not possible to accurately determine whether or not to wait, so we decided to wait, but we will regret because the waiting time becomes longer, or There are many cases where the user regrets that he / she could not park the car in a short period of time.
From the above, an object of the present invention is to enable the driver to display how long a waiting time can be entered when coming after the queue.
[0004]
[Means for Solving the Problems]
The present invention is a vehicle-to-vehicle communication device that displays a waiting time for entry of a vehicle into a parking lot, a storage means for storing a time when waiting for entry and a communication number of a subsequent vehicle immediately afterward, and an entry notification from a parking lot gate. Receiving means for receiving or detecting means for detecting passing through the parking lot gate, and calculating the waiting time by subtracting the admission waiting start time from the time passing through the parking lot entrance gate or the time allowed to enter. A waiting time calculating means for notifying the inter-vehicle communication device of the immediately following vehicle using the communication number and the vehicle of the following vehicle immediately following the waiting time received from the preceding vehicle. A communication means for notifying the inter-vehicle communication device, a display means for receiving and displaying the waiting time from the preceding vehicle, and a time when the waiting time is first received from the preceding vehicle, when starting the admission waiting And a means for storing in the storage means as. According to such an inter-vehicle communication device, it is possible to display to the driver how long the waiting time can be entered, and it is possible to accurately determine whether or not to wait.
[0005]
In addition, when a waiting time is received from the vehicle passing through the gate, the number of waiting vehicles is counted up, and the number of waiting vehicles and the waiting time are transmitted to the next rear vehicle. Thereafter, the rear vehicle counts up the number of waiting vehicles. The waiting time is transmitted to the next rear vehicle while each vehicle displays the number of waiting vehicles. Alternatively, when the waiting time is received from the gate passing vehicle, the vehicle position and the received waiting time are transmitted to the next rear vehicle, and thereafter, the rear vehicle sequentially determines the position of the preceding vehicle and the own vehicle position. At the same time, it is transmitted to the next rear vehicle, and each vehicle calculates and displays the distance to the head vehicle from the received position information. This makes it possible to make a more accurate determination as to whether or not to wait.
[0006]
DETAILED DESCRIPTION OF THE INVENTION
(A) Schematic diagram of the present invention FIG. 1 is an explanatory view of an entrance waiting time display according to the present invention.
(1) The last vehicle 11 at the end of the queue monitors whether a new vehicle 21 appears behind the vehicle-to-vehicle communication. When a new vehicle 21 enters the queue, the held waiting time Tw is transmitted to the new last vehicle 21.
(2) The last vehicle 21 in the queue presents the waiting time Tw obtained from the front vehicle 11 to the driver. Further, the time at this time (the time when the notification is first received) is recorded as the waiting start time _TWST .
(3) When the leading vehicle 31 is allowed to enter the parking lot, for example, when the leading vehicle 31 receives a gate entry notification from the parking lot gate 41, the waiting start time T _WST recorded in (2) from that time the subtracted to calculate the waiting time Tw, and notifies to the rear of the vehicle 51 _1.
(4) When each of the vehicles 51 _{1 to} 51n in the queue receives the entrance waiting time Tw from the preceding vehicle, it provides it to the driver and transmits it to the next vehicle in a chain.
With the configuration and operation as described above, as soon as entering the entrance queue, the latest entrance waiting time Tw at that time is displayed to the driver, and the entrance waiting time at the timing when the leading vehicle can enter, It can be referenced in all vehicles behind.
[0007]
(B) Configuration of the on-vehicle device FIG. 2 is a configuration diagram of the on-vehicle device of the present invention, in which the navigation device 50 and the inter-vehicle communication device 60 are provided so as to communicate with each other.
The inter-vehicle communication device 60 controls communication between a communication means (for example, Bluetooth device, wireless LAN means, etc.) 61 that communicates with surrounding vehicles, an inter-vehicle communication control unit 62 that controls inter-vehicle communication, and a navigation device. An interface unit 63, a display operation unit 64, a timer 65, and the like are provided. The storage device 71 of the inter-vehicle communication control unit 62 includes a program storage unit 71a and a data storage unit 71b in which various programs and data are stored. The data storage unit 71b includes (1) the waiting start time T _WST , (2) the waiting time Tw of the vehicle that has recently passed the gate, and (3) the communication number of the following vehicle immediately after itself (such as the Bluetooth device address) ) (4) Waiting number N, (5) Distance to gate, (6) Average waiting time Tw ', etc. are stored.
The navigation device 50 performs map display control around the vehicle, search control for searching for a guidance route to the destination, route guidance control along the searched guidance route, and the like. A function of detecting and notifying the inter-vehicle communication device 60 is provided.
[0008]
(C) Bluetooth communication protocol Bluetooth used for vehicle-to-vehicle communication (including vehicle-to-vehicle communication and vehicle-to-facility communication) is used between a mobile unit and a fixed unit, or between a mobile unit and a mobile electronic device, or between A wireless link intended for cable replacement. In Bluetooth communication, when a master wants to communicate, an inquiry (inquiry) is made with the IQ packet to determine what kind of slaves are in the vicinity, and each slave receives the Bluetooth device address and clock information necessary for establishing a connection with the FHS packet. Respond to the master. That is, by performing an inquiry, it is possible to collect device addresses and clock information of all slaves that respond to the inquiry. The Bluetooth device address is a unique address given to all Bluetooth devices.
Thereafter, the master performs a process called Page using the Bluetooth device address and clock information of the selected predetermined slave, and actually establishes a connection with the slave, and transmits and receives data. In other words, when the master sends an ID packet to the selected slave and receives a confirmation of receipt for this ID packet from the slave, the master sends an FHS packet to the slave, and its Bluetooth device address and clock information After that, the communication phase is entered.
[0009]
(D) Entrance waiting time display processing FIG. 3 is a processing flow of the last vehicle (tail vehicle) of the present invention.
It is monitored whether the waiting time Tw of the vehicle passing through the gate has been received from the preceding vehicle (step 101), and if it is received, it is determined whether or not the first waiting time Tw has been received (step 102). Save as T _WST (step 103).
After the process in step 103 or if the second waiting time Tw is received in step 102, the waiting time Tw of the received gate passing vehicle is displayed and stored (step 104). Note that the remaining waiting time can be displayed by subtracting the elapsed time from the waiting time Tw.
Next, it is monitored whether a new rear vehicle has appeared (step 105), and if it does not appear, the processing from step 101 is repeated. On the other hand, if a new rear vehicle appears, the latest waiting time Tw stored is transmitted to the rear vehicle, and if the rear vehicle is queued (step 106), the waiting state is changed from “end vehicle” to “ “Waiting vehicle (vehicles other than leading and trailing vehicles)” ”(step 107), the process is terminated. Note that the vehicle that becomes the “waiting vehicle” starts the processing of FIG.
[0010]
FIG. 4 is a processing flow of waiting vehicles (vehicles other than the head and tail vehicles).
Whether or not the vehicle is the leading vehicle is monitored (step 201). If the leading vehicle is reached, the waiting state is changed from "waiting vehicle" to "leading vehicle" (step 202), and the process is terminated. Note that the vehicle that becomes the “leading vehicle” starts the processing of FIG.
If it is not the first vehicle in step 201, it is monitored whether the waiting time Tw of the vehicle passing through the gate is received from the preceding vehicle (step 203). If not received, the process returns to step 201 to perform the subsequent processing. However, if the waiting time Tw of the passing vehicle is received, the waiting time Tw of the passing vehicle is displayed and stored (step 204). Then, the waiting time Tw of the vehicle passing through the gate is notified to the next rear vehicle (step 205), and the process returns to step 201.
[0011]
FIG. 5 is a processing flow of the leading vehicle.
Whether or not the gate entrance notification is received from the parking gate is monitored (step 301), and if received, the waiting time start time _TWST is subtracted from the current time Ta to calculate the waiting time Tw (step 302). ), The waiting time Tw is notified to the rear vehicle (step 303), and the process is terminated. It is also possible to detect the passage of the gate and subtract the waiting time start time _TWST from the passing time to calculate the waiting time Tw.
[0012]
(E) Modified Example Although the number of waiting vehicles is not displayed in the embodiment, it can be displayed as follows. That is, the waiting vehicle 51 _1, when receiving the wait time than Tw gate passing vehicle 31, counts up the waiting vehicle number N (N + 1 → N, the initial value is 0), the waiting and該待Chi vehicle speed N transmitting the time Tw to the next vehicle behind 51 _2. Thereafter, the rear vehicle 51 _i counts up the number N of vehicles waiting for reception (N + 1 → N), and transmits the received waiting time Tw to the next rear vehicle 51 _{i + 1.} And the waiting time Tw is displayed.
[0013]
Further, although the distance to the head is not displayed in the embodiment, it can be displayed as follows. That is, the waiting vehicle 51 _1, when receiving the wait time than Tw gate passing vehicle 31, and transmits the waiting time Tw and the received vehicle position data obtained from the navigation device 50 in the following vehicle behind 51 _2. Thereafter, the rear vehicle 51 _i sequentially transmits the received positions of the front vehicles 51 _{1 to} 51 _i-1 and the own vehicle position together with the waiting time Tw to the next rear vehicle. Each vehicle calculates the distance to the head vehicle from the received position information, and displays the distance and waiting time Tw.
In this way, it is possible to more accurately determine whether to wait.
[0014]
【The invention's effect】
According to the present invention as described above, the time when the entrance wait is started is stored, the waiting time is calculated by subtracting the entrance waiting start time from the time when the entrance gate is passed, and the waiting time is notified to the rear vehicle. The rear vehicle that has received the waiting time displays and stores the waiting time, and when a vehicle that becomes a new tail vehicle appears, the waiting time is sent to the vehicle. When it comes after the queue, it can be displayed to the driver how long it is possible to enter, and an accurate judgment as to whether or not to wait can be made.
[0015]
Further, according to the present invention, when the waiting time is received from the vehicle passing through the gate, the number of waiting vehicles is counted up, and the number of waiting vehicles and the waiting time are transmitted to the next rear vehicle. The waiting time is transmitted to the next vehicle while counting up the number of waiting vehicles, and each vehicle displays the number of waiting vehicles, or when the waiting time is received from a gate passing vehicle, The waiting time received is transmitted to the next rear vehicle. Thereafter, the rear vehicle sequentially transmits the position of the preceding vehicle and the own vehicle position together with the waiting time to the next rear vehicle, and each vehicle receives the received position information. Since the distance to the leading vehicle is calculated and displayed, it is possible to more accurately determine whether or not to wait.
[Brief description of the drawings]
FIG. 1 is an explanatory diagram of an entrance waiting time display according to the present invention.
FIG. 2 is a configuration diagram of a vehicle-mounted device of the present invention.
FIG. 3 is a processing flow of the last vehicle (tail vehicle) according to the present invention.
FIG. 4 is a processing flow of waiting vehicles (vehicles other than the head and tail vehicles).
FIG. 5 is a processing flow of a leading vehicle.
[Explanation of symbols]
11 Last vehicle 21 New last vehicle 31 First vehicle 41 Parking gate
51 _{1 to} 51n Lead vehicle, waiting vehicle other than highest peak vehicle

Claims (3)

In the inter-vehicle communication device that displays the waiting time for the vehicle to enter the parking lot,
Storage means for storing the time when waiting for entry and the communication number of the immediately following vehicle are stored;
Receiving means for receiving an entrance notification from the parking gate or detecting means for detecting that the parking gate has passed,
A waiting time calculating means for calculating a waiting time by subtracting the entrance waiting start time from the time when the parking lot entrance gate is passed or the time when entry is permitted;
The calculated waiting time is notified to the inter-vehicle communication device of the immediately following vehicle using the communication number, and the inter-vehicle communication device of the following vehicle immediately following the waiting time received from the preceding vehicle is notified. Communication means,
Display means for receiving and displaying the waiting time from the vehicle ahead,
Means for storing in the storage means the time when the waiting time is received for the first time from the preceding vehicle as the time when the waiting for entry is started;
A vehicle-to-vehicle communication device comprising: The communication means notifies the vehicle number N (initial value is 0) together with the waiting time to the inter-vehicle communication device of the following vehicle, and the inter-vehicle communication device of the subsequent vehicle sequentially counts up the waiting vehicle number (N + 1 → N) while transmitting the number of vehicles and the waiting time to the next succeeding vehicle, the display means of each inter-vehicle communication device displays the number N of waiting vehicles,
The inter-vehicle communication device according to claim 1. A navigation means for monitoring the position of the vehicle,
The communication means notifies the position of each preceding vehicle and the own vehicle position to the inter-vehicle communication device of the following vehicle together with the waiting time, and the inter-vehicle communication device calculates and displays the distance to the leading vehicle from the received position information. To
The inter-vehicle communication device according to claim 1.

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