JP3710113B2 - Parking position confirmation system - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a parking position confirmation system that detects a parking position of a car in a parking lot.
[0002]
[Prior art]
In a vast indoor / outdoor parking facility, as a system in which a user of the parked vehicle can detect the parking position of the parked vehicle, for example, as disclosed in Japanese Patent Application Laid-Open No. Sho 62-27899, A “parking position verification system using a transponding card” that stores information as data and detects the position of a car has been proposed.
[0003]
In this parking position detection system, the fixed station of the facility is provided with an antenna that can monitor the position of each parking position of the vehicle, specifies the designated vehicle, and displays the position on the detection plate. Check the vacant parking area with a display on the detection board, park the car in a vacant area, and then enter the PIN by operating the TRC (IC card with wireless transmission / reception function) key. . The number is added to the unique information of the TRC and the vehicle position information and stored in the memory. The position information of the car is stored in the memory when the TRC receives the position information of the fixed station installed at the place. When searching for the parking position of one's own car, the personal identification number set by the user is input from the numeric keypad of the detection plate.
[0004]
[Problems to be solved by the invention]
In this conventional parking position detection system, it is necessary to store a personal identification number when parking each car. In addition, an antenna that can monitor the position of each parking position in the parking facility, a radio transceiver, a local radio control device, a transmission / reception antenna for a fixed station, a local radio control device, and a radio transceiver A fairly large-scale facility such as providing a detection plate is required.
[0005]
Therefore, an object of the present invention is to provide a parking position confirmation system that can quickly and accurately detect the parking position of one's car without requiring a personal identification number or the like.
[0006]
Another object of the present invention is to provide a parking position confirmation system that can quickly and accurately detect the parking position of one's own car without requiring a large-scale facility.
[0007]
[Means for Solving the Problems]
The parking position confirmation system according to the present invention is “position information in which a plurality of unit parking areas each having a plurality of parking spaces are provided in the parking facility, and position information indicating the location of the unit parking areas is transmitted. A transmitter, a wireless card that stores the position information and is portable, and a monitor device that is provided at the parking facility and displays the position information, and the wireless card in the vehicle parked at the parking facility is located at the position The position information received from the information transmitter is stored, and when the wireless card approaches the monitor device, the position information stored in the wireless card is read by the monitor device ”.
[0008]
In the present invention, the position information stored in the wireless card may be received when parking is completed at the parking position.
In the present invention, the completion of parking can be detected by detecting that the engine of the parked vehicle has stopped.
[0009]
In the present invention, the engine stop can be detected by detecting a noise signal from the engine.
[0010]
In the present invention, in the position information transmitter, the position information transmitters in the unit parking areas adjacent to each other may transmit the position information at different frequencies.
In the present invention, the wireless card determines whether the received electric field strength from the location information transmitter is equal to or greater than a predetermined threshold value, and receives the location information from the location information transmitter of the parked unit parking area. It can also be determined whether or not it is radio waves.
[0011]
In the present invention, the monitor device transmits a weak radio wave, and the wireless card that has received the weak radio wave transmits the location information stored in the card, and displays the transmitted location information on the monitor device. You can also.
[0012]
In the present invention, the monitor device can also convert the received position information into map information and display it.
[0013]
DETAILED DESCRIPTION OF THE INVENTION
Next, an embodiment of the present invention will be described in detail with reference to the drawings.
[0014]
Referring to FIG. 1, in one embodiment of the present invention, there are six unit parking areas 10 (10A, 10B, 10C, 10D, 10E, 10F) each having four parking spaces in a parking facility. Is provided. At the center of each unit parking area 10, there is provided a position information transmitter 11 (11A, 11B, 11C, 11D, 11E, 11F) that oscillates at a different frequency in the adjacent unit parking area. That is, the position information transmitters 11A and 11C use the frequency f1, 11B uses the frequency f2, 11D and 11F use the frequency f3, and 11E uses the frequency f4.
[0015]
The position information transmitter 11 transmits a packet data transmission radio wave 12 including position information of each unit parking area at a given frequency (one of f1 to F4).
As shown in FIG. 2, the packet data includes reception synchronization data 12a, packet number 12b, error correction data 12c, confirmation flag (card / position information transmitter) 12d, personal ID data 12e, and position information. It consists of data 12f and a packet frame end flag 12g.
[0016]
A driver who uses this parking lot has a wireless card 13.
As shown in FIG. 3, the wireless card 13 includes an antenna unit 13A that can receive a packet data transmission radio wave, a radio unit 13B that can detect received electric field strength and position information, and a unique characteristic generated from an engine of a parked vehicle. An engine operation sensing unit 13C that detects a noise signal and detects that the noise signal has stopped and detects engine stop, a memory 13D that stores position information of a vehicle (wireless card) at the time of detection of the engine stop signal, and overall operation And a control unit 13E for controlling.
[0017]
Next, with reference to FIG. 4 which shows the operation | movement flowchart of a present Example, the operation | movement until a vehicle is parked at a parking position is demonstrated in detail.
[0018]
First, when the power of the wireless card 13 is turned on, the card 13 is initialized (step 21), and the card 13 waits for packet data radio waves from the position information transmitter 11 (step 22).
[0019]
When the antenna unit 13A receives the radio wave from the position information transmitter 11, the radio unit 13B detects the received electric field strength (step 23), and the engine operation sensing unit 13C enters a state of waiting for an engine operation stop signal (step 24). .
[0020]
When the engine operation sensing unit 13C senses engine stop, it notifies the control unit 13E of an engine stop confirmation signal. When receiving this confirmation signal, the control unit 13E determines whether or not the received electric field strength received by the radio unit 13B is equal to or greater than a threshold value (step 25).
[0021]
If the received electric field strength is not greater than or equal to the threshold value, the received radio wave is not a radio wave from the location information transmitter in the unit parking area where the vehicle is parked, but a leaked radio wave from a location information transmitter in another adjacent area. The control unit 13E outputs a frequency switching signal to the radio unit 13B in order to switch to any of the other three frequencies (step 26). The received electric field strength received at the switched frequency is detected (step 27) and compared with a threshold value (step 25). This operation is repeated until the received electric field strength becomes equal to or higher than the threshold value.
[0022]
If the received electric field strength is greater than or equal to the threshold value, the received stored confirmation flag and position information data are accumulated in the memory 13D (steps 28 and 29). In this state, the wireless card 13 enters a standby state (step 30), and the position information data stored in the memory 13D is held until the engine operation sensing unit 13C senses the start of the engine.
[0023]
A parking position display monitor device 14 is provided near the exit of the parking lot (FIG. 1). As shown in FIG. 5, the parking position display monitor device 14 is provided with a wireless unit 14B that transmits a weak confirmation signal under the control of the control unit 14A. When the driver carrying the wireless card 13 approaches the parking position display monitor device 14, the wireless unit 13B of the wireless card 13 receives this weak confirmation signal. In response to the reception of the confirmation signal, the control unit 13E transmits the position information data and the personal ID signal stored in the memory 13D from the radio unit 13B in the format shown in FIG. 2 for a predetermined time (step). 31).
[0024]
The parking position display monitor device 14 that has been in the standby state for the position information data (step 32) receives this, extracts the position information data, and converts the parking position into map information data based on it (step 33). And the personal ID number are displayed on the monitor unit 14C (steps 34 and 35).
[0025]
The driver can easily find out the parking position of his / her car by looking at the monitor unit 14C.
[0026]
When the driver finds his or her own vehicle and starts the engine, the engine operation detection unit 13C of the wireless card 13 detects the engine start. Thereby, the control unit 13E erases the position information data stored in the memory 13D.
[0027]
【The invention's effect】
As described above, the present invention does not require a conventional large-scale system and can be realized with a simple configuration.
[0028]
Further, since the parking position is displayed as visual information just by storing the position information in the wireless card and the parking position information is brought close to the display device, the user (driver) does not need to keep a password or the like.
[0029]
Furthermore, since it is not necessary for the user (driver) to touch the parking position information display device, information can be obtained even if the user's hand is occupied.
[Brief description of the drawings]
FIG. 1 is a diagram showing a parking lot in an embodiment of the present invention.
FIG. 2 is a diagram illustrating a transmission format used in an embodiment of the present invention.
FIG. 3 is a block diagram of a wireless card in one embodiment of the present invention.
FIG. 4 is a flowchart showing the operation of one embodiment of the present invention.
FIG. 5 is a block diagram of a parking position display monitor device according to an embodiment of the present invention.
[Explanation of symbols]
10 unit parking area 11 position information transmitter 12 packet data 13 wireless card 13A antenna unit 13B radio unit 13C engine operation sensing unit 13D memory 13E control unit 14 parking position display monitor device 14A control unit 14B radio unit 14C monitor unit

Claims (8)

  A plurality of unit parking areas each having a plurality of parking spaces are provided in the parking facility, a position information transmitter that is provided in the unit parking area and transmits position information indicating the location, and stores the position information A wireless card that can be carried together with a monitor device that is provided in the parking facility and displays the position information, and the wireless card in the vehicle parked in the parking facility receives the position information received from the position information transmitter. A parking position confirmation system, wherein the position information stored in the wireless card is read by the monitor device when the wireless card approaches the monitor device.   The parking position confirmation system according to claim 1, wherein the position information stored in the wireless card is position information received when parking is completed at a parking position.   The parking position confirmation system according to claim 2, wherein the parking completion is detected by detecting that the engine of the parked vehicle has stopped.   The parking position confirmation system according to claim 3, wherein a noise signal from the engine is detected for detecting the engine stop.   The parking position confirmation system according to claim 1, wherein the position information transmitters of the unit parking areas adjacent to each other transmit the position information at different frequencies.   Whether the wireless card is a radio wave from the location information transmitter of the parked unit parking area by judging whether the received electric field intensity from the location information transmitter is equal to or higher than a predetermined threshold value The parking position confirmation system according to claim 5, wherein:   The monitor device transmits a weak radio wave, and the wireless card that has received the weak radio wave transmits position information stored in the card, and displays the transmitted position information on the monitor device. The parking position confirmation system according to claim 1.   The parking position confirmation system according to claim 7, wherein the monitor device converts the received position information into map information and displays the map information.

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