JP5296403B2 - Parking lot management system - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To exactly set an internal clock of a parking fee adjustment machine based on time information to be provided from the outside even when a receiving state of an atomic clock is poor due to an installation place or surrounding environment, or even at a small parking lot, and to exactly set the internal clock of the parking fee adjustment machine by hardly modifying the existing parking fee adjustment machine. <P>SOLUTION: Time of the internal clock of a parking lot management machine 3 is set by the time information received from an NTP server 20. Then, a time adjustment signal is transmitted from the parking lot management machine 3 to the parking fee adjustment machine 2 using communication by a polling system between the parking lot management machine 3 and the parking fee adjustment machine 2. An hour value and a minute value of the internal clock of the parking fee adjustment machine 2 are set based on an hour value, a minute value, and a second value included in the time adjustment signal, and a second value of the internal clock of the parking fee adjustment machine 2 is set to zero in timing that the parking fee adjustment machine 2 receives the time adjustment signal. <P>COPYRIGHT: (C)2010,JPO&amp;INPIT

Description

  The present invention relates to a parking fee settlement machine that mainly performs a parking fee settlement process, a flap device control or a gate device control in a small unmanned paid parking lot, and a plurality of such paid parking lots. The present invention relates to a parking lot management system having a parking lot management center to be managed and a parking lot management machine connected so as to be able to communicate and communicate, and more specifically, to a technology for performing time synchronization of a parking lot management machine and a parking fee settlement machine.

  Mainly in small and unmanned pay parking lots, gate devices are installed at the entrance and exit of the parking lot, and a gate type parking lot that collects charges when the vehicle leaves the parking lot, and for each parking area There is a flap-type parking lot that is provided with a flap device that locks the vehicle in a state in which the vehicle cannot be withdrawn, and that allows the vehicle to leave by releasing the lock by the flap device only when the fee is settled. In such a parking lot, a parking fee settlement machine is installed, and the parking fee settlement machine performs the parking fee settlement process, and further controls the gate device or the flap device in conjunction with the parking fee settlement process. Is called.

  Also, in recent years, a parking fee settlement machine can be connected to the parking lot management center so that communication can be performed between the parking lot user and the parking lot management center operator. Parking lot management systems that can perform data communication between a parking lot management center and a parking lot management center and that can remotely control a parking fee settlement machine from the parking lot management center have become widespread.

  According to such a parking lot management system, a complaint from a user at the time of unexpected failure can be processed in the parking lot management center. In addition, the operator of the parking lot management center can talk with the user and explain how to use the settlement machine. If a camera is installed on the parking fee adjustment machine side, the operator of the parking lot management center confirms the images taken by the camera, such as the user's behavior and facial expressions or the user's driver's license. And communication with users. Furthermore, if necessary, the operator of the parking lot management center can remotely operate the checkout machine and assist the user. Such a parking lot management system is a very convenient system for the user because an appropriate process can be performed in a short time for an unexpected device failure or some kind of trouble.

For example, Japanese Patent No. 3363276 (Patent Document 1) describes a technique related to such a parking lot management system.
Japanese Patent No. 3363276

  Nowadays, there are many people who own a wristwatch with an accurate radio clock function, and who have a car navigation device that displays an accurate time based on radio waves from GPS (Global Positioning System). A person is acting based on the exact time indicated by such a wristwatch or car navigation system. For this reason, if the display time of the parking fee settlement machine is advanced or delayed with respect to the standard time, the following problem may occur.

  For example, a user parks a vehicle in an unattended flap-type parking lot, goes to add it, then returns to the parking lot just before the fee system changes, and settles the goods before the fee system changes. Suppose that This user tried to complete the settlement before the fee system was switched based on the time indicated by the radio wristwatch owned by the user, but the time of the internal clock of the parking fee settlement machine was advanced several minutes. There are cases where the fee structure has already been switched and a high parking fee has to be paid against the intention of the user. When such a situation occurs, the user is dissatisfied and distrusted. In addition, when such a situation occurs, a complaint is sent from the user to the operator of the parking lot management center, which may cause an excessive burden on the business of the parking lot management center.

  In order to avoid such a problem, for example, the following method can be considered. That is, (1) a method for synchronizing the internal clock of the parking fee settlement machine with the radio clock, (2) a method for setting the internal clock of the parking fee settlement machine according to the time extracted from GPS, and (3) a personal The computer is connected, the personal computer acquires accurate time information from the NTP (Network Time Protocol) server of the time distribution organization via the Internet, and sets the time of the internal clock of the personal computer based on this time information. A method is conceivable in which accurate time information based on the time of the internal clock of the personal computer is transmitted from the personal computer to the parking fee adjusting machine, and the time of the internal clock of the parking fee adjusting machine is set based on this time information.

  However, when the parking lot uses a narrow site in a group of buildings in the city, it may not be possible to receive radio waves from the radio clock well. Further, if expensive GPS devices are arranged in all of the unmanned small parking lots scattered in the city, the cost becomes too high. In the case of a small unmanned parking lot that is normally used in a narrow space, it is extremely difficult to install a management room for installing a personal computer around the parking lot.

  Another possible method is to store a small personal computer or PDA (Personal Digital Assistance) in the parking fee settlement machine and set the time of the internal clock of the parking fee settlement machine using such a personal computer. However, many of the existing parking fee settlement machines have a problem that even if the time information from the personal computer can be received, it cannot be accurately reflected in the internal clock of the parking fee settlement machine. That is, the time information provided from the NTP server has an hour value, a minute value, and a second value, and the second value has a value after the decimal point. The internal clock of the personal computer also has an hour value, a minute value, and a second value, and the second value has a value after the decimal point. Therefore, the time information provided from the NTP server can be accurately reflected in the internal clock of the personal computer.

  However, an existing parking fee adjusting machine can set the hour value and the minute value based on time information provided from the outside, but it is difficult to set the second value. This is because the existing parking fee adjusting machine has only a function of setting the second value to zero at the timing of receiving the signal for synchronizing the time for setting the second value. In other words, the existing parking fee settlement machine is configured assuming a large parking lot, and the primary purpose was to synchronize the time within the same parking lot (for example, the exit fee settlement machine for the entrance ticket machine). The time of the second is simply set to zero under the specified hour and minute conditions when the time synchronization signal from the parent device is received. Yes. As a result, even if the existing parking fee settlement machine can receive time information indicating the hour, minute and second values from the personal computer, the time indicated by the time information reaches the second value with the time indicated by the internal clock. It is not easy to set accurately.

  On the other hand, it is technically possible to modify an existing parking fee settlement machine so that the time of the internal clock can be accurately set to the second value by the time information indicating the hour, minute and second values. Is possible. However, in order to realize this, it is necessary to reexamine the internal configuration of the existing parking fee settlement machine, which requires a large amount of development cost.

  The present invention has been made in view of the above-described problems, for example. The first problem of the present invention is that even if the reception state of the radio timepiece is bad due to the location of the parking lot or the surrounding environment, a personal computer or the like is used. Parking lot management system that can accurately set the internal clock of the parking fee settlement machine based on time information provided from the outside, even in small parking lots where there is no room to install facilities for indoor use Is to provide.

  The second object of the present invention is to provide a parking lot management system capable of accurately setting an internal clock of a parking fee payment machine without almost modifying an existing parking fee payment machine.

  In order to solve the above problems, the first parking lot management system of the present invention controls the vehicle movement restriction device that restricts the movement of the vehicle to the outside of the parking lot until the payment of the parking fee and the payment of the parking fee are completed. A parking fee settlement machine that is attached to the parking fee settlement machine and is communicably connected to a parking lot management center via a computer network, and performs a call or data transmission / reception with a parking lot user The parking lot management system includes: a first internal clock; and transmission of time information indicating a time matching standard time managed by the NTP server to the NTP server. A time request signal transmitting means for transmitting a requested time request signal to the NTP server via the computer network, and the time request signal transmitting means. Time information receiving means for receiving the time information transmitted from the NTP server via the computer network in response to the received time request signal, and the first internal clock based on the time information received by the time information receiving means. Time synchronization means for synchronizing the time of the first internal clock with a time that matches the standard time, and at least a time value and a minute value of the first internal clock at a predetermined time set based on the time of the first internal clock. A time adjustment signal transmission means for transmitting a time adjustment signal including the time adjustment signal to the parking fee adjustment machine, wherein the parking fee adjustment machine is transmitted from the second internal clock and the time adjustment signal transmission means of the parking lot management machine. A time adjustment signal receiving means for receiving the time adjustment signal, and at least a time included in the time adjustment signal received by the time adjustment signal reception means. The time value and the minute value of the second internal clock are respectively set based on the minute value, and the second value of the second internal clock is set when the time adjustment signal is received by the time adjustment signal receiving means. Time setting means for setting to zero.

  That is, the parking lot management machine synchronizes the time of the internal clock of the parking lot management machine with the time matching the standard time based on the time information received from the NTP server. Thereafter, the parking lot management machine transmits a time adjustment signal including at least the hour value and the minute value of the internal clock to the parking fee adjusting machine at a predetermined time set based on the time of the internal clock of the parking lot management machine. The parking fee settlement machine sets the hour and minute values of the internal clock of the parking fee settlement machine based on the hour and minute values included in the time adjustment signal received from the parking lot management machine, and the parking fee settlement When the machine receives the time adjustment signal, the second value of this internal clock is set to zero. For example, when the parking lot management machine sends the time adjustment signal to the parking fee settlement machine when the second value of its own internal clock becomes zero, the hour and minute values of the internal clock of the parking fee settlement machine And the second value can be accurately adjusted to the hour, minute and second values that match the standard time.

  In order to solve the above-mentioned problem, the second parking lot management system of the present invention is the above-described first parking lot management system of the present invention, wherein the parking fee settlement machine is configured to perform the parking from the parking lot management machine. Inquiry signal transmitting means for transmitting to the parking lot management machine at regular intervals an inquiry signal for inquiring to the parking lot management machine whether there is information to be transmitted to the fee settlement machine, and the parking lot management machine Transmits an inquiry signal receiving means for receiving the inquiry signal transmitted from the inquiry signal transmitting means of the parking fee adjusting machine, and transmits a response signal to the inquiry signal received by the inquiry signal receiving means to the parking fee adjusting machine. A response signal transmission means, wherein the time adjustment signal transmission means adjusts the time of the inquiry signal by the inquiry signal reception means. The time adjustment signal is transmitted to the parking fee settlement machine as a response signal to the inquiry signal at the time when it is received within the signal transmission period, and the second value of the first internal clock is the time adjustment signal transmission period. A period from a time point a predetermined time before a time point when it becomes zero to a time point when the second value of the first internal clock becomes zero, and / or a predetermined time period from the time point when the second value of the first internal clock becomes zero This is the period until elapses.

  That is, when the parking lot management machine receives the inquiry signal within the time adjustment signal transmission period, the parking lot management machine transmits the time adjustment signal to the parking fee adjusting machine as a response signal to the inquiry signal. By setting the time adjustment signal transmission period in the above range, the time of the internal clock of the parking fee adjusting machine can be adjusted to an accurate time that matches the standard time.

  In order to solve the above-mentioned problem, the third parking lot management system of the present invention is the above-described second parking lot management system of the present invention, wherein the time request signal transmission means of the parking lot management machine includes: The time request signal is transmitted to the NTP server immediately after the response signal is transmitted to the parking fee adjusting machine by the response signal transmitting means.

  That is, while the parking lot management machine is synchronizing the time of the internal clock of the parking lot management machine with the time information transmitted from the NTP server, communication is performed between the parking fee adjusting machine and the parking lot management machine. This can be avoided, and the time synchronization of the internal clock of the parking lot management machine based on the time information from the NTP server can be stably and quickly performed.

  In order to solve the above-mentioned problem, a fourth parking lot management system of the present invention is the first, second or third parking lot management system of the present invention described above, wherein the time adjustment of the parking lot management machine is performed. The signal transmission means transmits a time adjustment signal including the hour value, minute value and second value of the first internal clock to the parking fee adjusting machine, and the time setting means of the parking fee adjusting machine includes the time adjusting signal. The time value and the minute value of the second internal clock are respectively set based on the time value and the minute value included in the time adjustment signal received by the reception means, and the time adjustment signal is received by the time adjustment signal reception means. The second value of the second internal clock is set to zero when a predetermined standby time has elapsed from the time when the second internal clock is set, and the predetermined standby time is the second of the first internal clock included in the time adjustment signal. 60 or The time indicated by the value obtained by subtracting, time setting means of the parking fee adjustment machine calculates the predetermined waiting time on the basis of the second value included in the received time alignment signal by the time setting signal receiving means.

  That is, when the predetermined waiting time has elapsed from the time when the time adjustment signal is received, the second value of the parking fare adjusting machine's internal clock is set to zero, so the time of the parking fare adjusting machine's internal clock is set to the standard time. It is possible to adjust the time more accurately to the time that matches.

  In order to solve the above-mentioned problem, a fifth parking lot management system of the present invention is the first, second or third parking lot management system of the present invention described above, wherein the time adjustment of the parking lot management machine is performed. The signal transmission means transmits a time adjustment signal including the hour value, minute value and second value of the first internal clock to the parking fee adjusting machine, and the time setting means of the parking fee adjusting machine includes the time adjusting signal. The time value and the minute value of the second internal clock are respectively set based on the time value and the minute value included in the time adjustment signal received by the reception means, and the time adjustment signal is received by the time adjustment signal reception means. The second value of the second internal clock is set to zero when a predetermined standby time has elapsed from the time when the second internal clock is set, and the predetermined standby time is the second of the first internal clock included in the time adjustment signal. 60 or From the time indicated by the subtracted value, the communication time between the parking lot management machine and the parking fee adjusting machine or / and the time setting means of the parking fee adjusting machine perform the time setting process of the second internal clock. The time setting means of the parking fee adjusting machine includes a second value included in the time adjustment signal received by the time adjustment signal reception means, the parking lot management machine, and the parking lot. The predetermined waiting time is calculated based on a communication time with the fee adjusting machine and / or a time required for the time setting means of the parking fee adjusting machine to perform the time setting process of the second internal clock. .

  That is, due to the communication time between the parking lot management machine and the parking fee adjusting machine, and / or the time required for the time setting processing of the internal clock in the parking fee adjusting machine, there is an error in the time of the internal clock of the parking fee adjusting machine. Can be prevented, and the time of the internal clock of the parking fee adjusting machine can be more accurately set to the time that matches the standard time.

  According to the parking lot management system of the present invention described above, parking is performed based on the time information provided from the NTP server even in a small parking lot where there is no room for installing a facility for placing a personal computer or the like indoors. The internal clock of the fee adjustment machine can be set accurately. In addition, compared to the case where the time is adjusted using the radio wave of the radio clock, the internal clock of the parking fee settlement machine can be set accurately even if the radio clock reception is poor due to the location of the parking lot and the surrounding environment. it can. In addition, the internal clock of the parking fee payment machine can be accurately set without almost modifying the existing parking fee payment machine. Therefore, it is possible to eliminate the disadvantages caused to the parking lot user due to the error between the time of the radio wave wristwatch owned by the parking lot user and the time of the internal clock of the parking fee adjusting machine.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

(First embodiment of parking lot management system)
FIG. 1 shows a parking lot management system according to a first embodiment of the present invention, together with vehicle sensors and flap devices arranged in a parking space in a parking lot site. FIG. 2 shows a parking lot control system in which a plurality of parking lot management systems according to the first embodiment of the present invention are connected to an NTP server and a parking lot management center via a wide area communication network and the Internet.

  In FIG. 1, a parking lot management system 1 according to the first embodiment of the present invention includes a parking fee settlement machine 2 and a parking lot management machine 3. The parking fee settlement machine 2 performs a parking fee settlement process, and controls the flap device 4 that restricts the movement of the vehicle outside the parking lot until the parking fee is settled.

  Specifically, when the vehicle is received, the parking fee adjusting machine 2 detects that the vehicle has entered the parking space 5 by the vehicle sensor 6 embedded in the parking space 5, and is located below the vehicle. The flap plate 7 of the flap device 4 is raised. The raised flap plate 7 prevents the vehicle from being delivered. In addition, when the vehicle is released, the parking fee adjusting machine 2 performs a parking fee adjusting process and lays the flap plate 7 of the flap device 4 located under the vehicle of the user who has completed the adjusting process. As a result, the vehicle can be delivered. The parking fee settlement machine 2 is connected to the flap devices 4, 4,... And the vehicle sensors 6, 6,. In addition, an operation key 9, a coin insertion slot 10, a bill insertion slot 11, and a display 12 are provided at the front part of the parking fee settlement machine 2. The user uses these to settle the parking fee.

  The parking lot management machine 3 is attached to the parking fee settlement machine 2 and is connected to the parking lot management center 15 via a wide area communication line network 16 such as a PHS (Personal Handy-phone System) and the Internet 17. (See FIG. 2). The parking lot user can talk to an operator (not shown) of the parking lot management center 15 via the parking lot management machine 3. In addition, data can be transmitted and received between the parking fee settlement machine 2 and the parking lot management center 15 via the parking lot management machine 3.

  Specifically, the parking lot management machine 3 is housed in a small casing capable of protecting the stored items from rain and wind, and is attached to, for example, the upper part or the front part of the parking fee settlement machine 2. . The parking lot user uses the camera 18 provided in the front part of the parking lot management machine 3 and the interphone 19 provided in the vicinity of the parking lot management machine 3 through the voice and video with the operator of the parking lot management center 15. You can make a call. In addition, the parking fee payment machine 2 can transmit data related to the parking fee to the parking lot management center 15 via the parking lot management machine 3. In addition, the parking lot management center 15 can remotely control the parking lot management machine 3 and the parking fee settlement machine 2 by transmitting a remote operation signal to the parking lot management machine 3.

  Furthermore, as shown in FIG. 2, the parking lot management machine 3 is connected to the NTP server 20 via the wide area communication network 16 and the Internet 17, and the parking lot management machine 3 is based on time information transmitted from the NTP server 20. Has a function of synchronizing the time of the internal clock with a time that matches the standard time. That is, the NTP server 20 is a server that transmits time information indicating an accurate time that matches the standard time to a personal computer or other electronic device connected via the Internet based on the NTP (Network Time Protocol) protocol. . Based on the NTP protocol, the parking lot management machine 3 receives time information indicating an accurate time that matches the standard time from the NTP server 20, and based on the received time information, the time of the internal clock of the parking lot management machine 3 is obtained. , Set the time to match the standard time.

  Furthermore, the parking lot management machine 3 is communicably connected to the parking fee settlement machine 2 via a cable. The parking fee payment machine 2 and the parking lot management machine 3 communicate with each other by a polling selecting method. In this communication, the parking fee settlement machine 2 hits the parent machine, and the parking lot management machine 3 hits the child machine.

  Specifically, in the communication between the parking fee settlement machine 2 and the parking lot management machine 3, the parking fee settlement machine 2 transmits an inquiry signal to the parking lot management machine 3 at regular intervals (for example, every two seconds). . During the polling operation, the parking fee adjusting machine 2 transmits an inquiry signal for inquiring whether there is information to be transmitted from the parking lot managing machine 3 to the parking fee adjusting machine 2 to the parking lot managing machine 3. When there is information to be transmitted from the parking lot management machine 3 to the parking fee settlement machine 2 at the time of receiving the inquiry signal, the parking lot management machine 3 uses the information to be transmitted as a response signal as a parking fee settlement machine. 2 to send. Further, when there is no information to be transmitted from the parking lot management machine 3 to the parking fee settlement machine 2 at the time of receiving the inquiry signal, the parking lot management machine 3 indicates a simple response signal (for example, there is no event). (Acknowledge signal) is transmitted to the parking fee settlement machine 2.

  On the other hand, at the time of selecting operation, the parking fee adjusting machine 2 inquires whether the parking fee managing machine 3 can receive information to be transmitted from the parking fee adjusting machine 2 to the parking lot managing machine 3 in the future. A signal is transmitted to the parking lot management machine 3. When the information to be transmitted from the parking fee adjusting machine 2 to the parking lot management machine 3 can be received by the parking lot management machine 3 at the time of receiving this inquiry signal, the parking lot management unit 3 indicates that fact. A response signal is transmitted to the parking fee settlement machine 2. Further, when the parking lot management machine 3 cannot receive the information to be transmitted from the parking fee adjusting machine 2 to the parking lot management machine 3 at the time when the inquiry signal is received, the parking lot management unit 3 does so. Is sent to the parking fee settlement machine 2.

  The parking lot management machine 3 transmits the time adjustment signal including the hour value, the minute value, and the second value of the internal clock that the parking lot management machine 3 has to the parking fee settlement machine 2 by using communication by such a polling selecting method. Then, the parking fee adjusting machine 2 adjusts the time of the internal clock of the parking fee adjusting machine 2 based on the time adjustment signal transmitted from the parking lot management unit 3.

  Prior to that, the parking lot management machine 3 is time-synchronized with the NTP server 20, and the time of the internal clock of the parking fee adjusting machine 2 is set by adjusting the time of the internal clock of the parking fee adjusting machine 2 by the above-mentioned time adjustment signal. Can be accurately set to a time that matches the standard time.

(Parking fee adjustment machine and parking lot management machine)
FIG. 3 shows the internal structure of the parking fee settlement machine 2 and the parking lot management machine 3 in the parking lot management system 1 of the present invention. FIG. 4 shows a configuration of the parking fee settlement machine 2 realized by a CPU 31 (Central Processing Unit) of the parking fee settlement machine 2. FIG. 5 shows the configuration of the parking lot management machine 3 realized by the CPU 61 of the parking lot management machine 3.

  As shown in FIG. 3, the parking fee payment machine 2 includes a CPU 31, a ROM (Read Only Memory), a RAM (Random Access Memory), a memory 32 such as a flash memory and a hard disk, and an internal clock (RTC: Real Time Clock). 33. The CPU 31 and the memory 32 are connected to each other via a bus 34. The internal clock 33 is connected to the CPU 31. The internal clock 33 includes a battery (not shown) for holding time data.

  Furthermore, the parking fee settlement machine 2 displays an operation key 9 for inputting information when the parking lot user makes a settlement, and displays a settlement method, a parking fee amount, a settlement result, etc. to the parking lot user. Display device 12, an external communication unit 35 having a communication circuit for communicating with the parking lot management machine 3, a receipt printer 36, a coin selector 37, a coin dispensing device 38, a bill A reader 39, a speaker 40, and a flap device control unit 41 for controlling the plurality of flap devices 4, 4,. The operation key 9, the display 12, the external communication unit 35, the receipt printer 36, the coin selector 37, the coin dispensing device 38, the bill reader 39, the speaker 40 and the flap device control unit 41 are connected to the bus 34 via the interface 42. And placed under the control of the CPU 31.

  The CPU 31 functions as the inquiry signal transmission unit 51, the time adjustment signal reception unit 52, the time setting unit 53, and the control unit 54 shown in FIG. 4 by reading the computer program stored in the memory 32 and executing the computer program. The inquiry signal transmission unit 51 sends an inquiry signal for inquiring of the parking lot management machine 3 whether there is information to be sent from the parking lot management machine 3 to the parking fee settlement machine 2 (at intervals of 2 seconds, for example). Is transmitted to the parking lot management machine 3 via the external communication unit 35. The time adjustment signal reception unit 52 receives the time adjustment signal transmitted from the time adjustment signal transmission unit 76 of the parking lot management machine 3 via the external communication unit 35. The time setting unit 53 sets the time of the internal clock 33 based on the time adjustment signal received by the time adjustment signal reception unit 52.

  Specifically, the time setting unit 53 sets the hour value and minute value of the internal clock 33 based on the hour value, minute value, and second value included in the time adjustment signal received by the time adjustment signal receiving unit 52, respectively. At the same time, the second value of the internal clock 33 is set to zero when the time adjustment signal is received by the time adjustment signal receiver 52.

  The control unit 54 comprehensively controls the parking fee settlement machine 2. In addition, the control unit 54 controls the operation key 9, the display device 12, the components 36 to 40 related to the settlement process, and the like, and performs a parking fee settlement process. The control unit 54 controls the plurality of flap devices 4, 4,... In cooperation with the flap device control unit 41.

  On the other hand, the parking lot management machine 3 includes a CPU 61, a memory 62 such as a ROM, a RAM, a flash memory, and a hard disk, and an internal clock (RTC) 63, as shown in FIG. The CPU 61 and the memory 62 are connected to each other via a bus 64. The internal clock 63 is connected to the CPU 61. The internal clock 63 includes a battery (not shown) for holding time data.

  Furthermore, the parking lot management machine 3 connects the parking lot management machine 3 with a wide-area communication line in order to communicate with the external communication unit 65 having a communication circuit for communicating with the parking fee settlement machine 2 and the NTP server 20. When a call between a data terminal device (DCE: Data Circuit Termination Equipment) 66 for connecting to the network 16 and an operator of the parking lot user and the parking lot management center 15 is realized, a video of the user is taken. And an interphone 19 for inputting the voice of the user and outputting the voice of the operator when realizing a call between the parking lot user and the operator of the parking lot management center 15. Yes. The external communication unit 65, the data terminal device 66, the camera 18, and the interphone 19 are connected to the bus 64 via the interface 67 and are placed under the control of the CPU 61.

  The CPU 61 reads the computer program stored in the memory 62 and executes it to execute the time request signal transmission unit 71, time information reception unit 72, time synchronization unit 73, inquiry signal reception unit 74, response shown in FIG. It functions as a signal transmission unit 75, a time adjustment signal transmission unit 76, and a control unit 77. The time request signal transmitter 71 cooperates with the data terminal device 66 to transmit a time request signal to the NTP server 20 via the wide area communication network 16 and the Internet 17. The time request signal is a signal for requesting the NTP server 20 to transmit time information indicating a time that matches the standard time managed by the NTP server 20. The time request signal transmission unit 71 transmits the time request signal to the NTP server 20 immediately after the response signal is transmitted to the parking fee settlement machine 2 by the response signal transmission unit 75, as will be described later. The time information receiving unit 72 cooperates with the data terminal device 66 and is transmitted from the NTP server 20 via the wide area communication network 16 and the Internet 17 according to the time request signal transmitted by the time request signal transmitting unit 71. Receive time information. The time synchronizer 73 synchronizes the time of the internal clock 63 with the time that matches the standard time based on the time information received by the time information receiver 72. The inquiry signal receiving unit 74 receives the inquiry signal transmitted from the inquiry signal transmitting unit 51 of the parking fee adjusting machine 2 via the external communication unit 65.

  Immediately after the inquiry signal is received by the inquiry signal receiving unit 74, the response signal transmission unit 75 transmits a response signal to the inquiry signal to the parking fee settlement machine 2 via the external communication unit 65. The inquiry signal transmission unit 51 of the parking fee settlement machine 2 transmits the inquiry signal received by the inquiry signal reception unit 74 of the parking lot management unit 3 and the response signal transmission unit 75 transmits it to the parking fee settlement machine 2. Communication signal (polling operation) between the parking fee adjusting machine 2 and the parking lot management machine 3 described above is realized by the response signal (including the time adjustment signal as a response signal).

  The time adjustment signal transmission unit 76 transmits a time adjustment signal including the hour value, the minute value, and the second value of the internal clock 63 via the external communication unit 65 at a predetermined time set based on the time of the internal clock 63. Send to the parking fee settlement machine 2.

  Specifically, the time adjustment signal transmission unit 76 generates a time adjustment signal as a response signal to the inquiry signal when the inquiry signal reception unit 74 receives the inquiry signal within a time adjustment signal transmission period described later. Send to the parking fee settlement machine 2. In the present embodiment, the predetermined time point set based on the time of the internal clock 63 is any time point within the time adjustment signal transmission period set based on the time of the internal clock 63.

  The control unit 77 comprehensively controls the parking lot management unit 3. In addition, the control unit 77 cooperates with the data terminal device 66 when realizing the dialogue between the parking lot user and the operator of the parking lot management center 15, and performs voice data between the parking lot management center 15. Transmission / reception and transmission of video data to the parking lot management center 15 are also controlled, and remote control of the parking fee settlement machine 2 and data transmission / reception such as settlement data from the parking fee settlement machine 2 are also controlled.

(Communication between NTP server and parking lot management machine)
FIG. 6 shows the timing of communication between the NTP server 20 and the parking lot management machine 3 and the timing of communication between the parking lot management machine 3 and the parking fee adjusting machine 2, respectively. The time request signal transmission unit 71 of the parking lot management machine 3 transmits the time request signal to the NTP server 20 immediately after the response signal is transmitted to the parking fee settlement machine 2 by the response signal transmission unit 75. This point will be described with reference to FIG.

  The time request signal transmission unit 71 of the parking lot management machine 3 sets the time at a preset time (for example, 0 o'clock, 3 o'clock, 6 o'clock,...) Or at a preset time interval (for example, an interval of 3 hours). Preparation for transmitting the request signal to the NTP server 20 is performed (for example, it is assumed that a preset time interval has passed at about 31 minutes 20 seconds in FIG. 6). Then, the time request signal transmission unit 71 waits for the response signal transmission unit 75 to transmit a response signal to the parking fee settlement machine 2 in response to the inquiry signal transmitted from the parking fee settlement machine 2. Then, the time request signal transmission unit 71 sends the time request signal to the NTP server immediately after the response signal transmission unit 75 transmits the response signal to the parking fee adjusting machine 2 (for example, about 31 minutes 22 seconds in FIG. 6). 20 to send. When the interval at which the inquiry signal is transmitted from the parking fee adjusting machine 2 is 2 seconds, for example, the time request signal transmission unit 71 waits up to 2 seconds after preparing to transmit the time request signal to the NTP server 20. Then, a time request signal is transmitted to the NTP server 20.

  The NTP server 20 returns the time information of the NTP server 20 to the parking lot management machine 3 immediately after receiving the time request signal transmitted from the time request signal transmission unit 71 of the parking lot management machine 3. Then, the time information receiving unit 72 immediately receives the time information returned from the NTP server 20, and the time synchronizing unit 73 is a well-known one defined by the NTP protocol based on the time information received by the time information receiving unit 72. By using this calculation method, the time of the internal clock 63 is synchronized with the time that matches the standard time. Such reception of time information by the time information reception unit 72 and time synchronization of the internal clock 63 by the time synchronization unit 73 are performed by the inquiry signal reception unit 74 after the time request signal transmission unit 71 transmits the time request signal. Is completed (for example, at about 31 minutes 23 seconds in FIG. 6).

(Communication between parking lot management machine and parking fee adjustment machine)
FIG. 7 shows the communication timing between the parking lot management machine 3 and the parking fee adjusting machine 2 when a further time elapses from the time of FIG. When the inquiry signal receiving unit 74 receives the inquiry signal within the time adjustment signal transmission period, the time adjustment signal transmission unit 76 of the parking lot management machine 3 uses the time adjustment signal as a response signal to the inquiry signal to settle the parking fee. Transmit to machine 2. This point will be described with reference to FIG.

  In the present embodiment, the time adjustment signal transmission period is, for example, immediately after the time synchronization between the NTP server 20 and the parking lot management machine 3 is performed, and the internal clock 63 of the parking lot management machine 3 (the time of the internal clock 63). The time value received from the NTP server 20 is accurately adjusted to a time that matches the standard time), and the second value of the internal clock 63 becomes zero from the time two seconds before the time when the second value becomes zero for the first time. This is a period until a time point and a period until 2 seconds elapse from the time point when the second value of the internal clock 63 becomes zero. As an example, as shown in FIG. 7, the time adjustment signal transmission period is a period from 31 minutes 58 seconds to 32 minutes 02 seconds in the same value as in FIG.

  When the inquiry signal transmitted from the inquiry signal transmission unit 51 of the parking fee adjusting machine 2 is received by the inquiry signal reception unit 74 of the parking lot management machine 3 outside the time adjustment signal transmission period, the response signal of the parking lot management machine 3 The transmission unit 75 transmits a response signal to the parking fee settlement machine 2. The response signal in this case is not a time adjustment signal. For example, when there is no information to be transmitted from the parking lot management machine 3 to the parking fee settlement machine 2 when the inquiry signal is received, this response signal is an acknowledge signal indicating that there is no event.

  On the other hand, when the inquiry signal transmitted from the inquiry signal transmission unit 51 of the parking fee settlement machine 2 is received by the inquiry signal reception unit 74 of the parking lot management machine 3 within the time adjustment signal transmission period, the parking lot management machine 3 The time adjustment signal transmitter 76 transmits the time adjustment signal as a response signal to the parking fee settlement machine 2. This time adjustment signal includes the hour value, minute value, and second value of the internal clock 63 of the parking lot management machine 3.

  In the parking fee adjusting machine 2, the time adjustment signal receiver 52 receives the time adjustment signal transmitted from the time adjustment signal transmitter 76 of the parking lot management machine 3, and the time setting unit 53 is the time adjustment signal receiver 52. The time value and the minute value of the internal clock 33 are set based on the hour value, the minute value, and the second value included in the time adjustment signal received by. Further, the time setting unit 53 sets the second value of the internal clock 33 to zero when the time adjustment signal receiving unit 52 receives the time adjustment signal.

  The time setting of the internal clock 33 by the time setting unit 53 will be specifically described. The time adjustment signal in the present embodiment includes an internal time at which the time adjustment signal transmission unit 76 of the parking lot management machine 3 transmits the time adjustment signal. The hour value, minute value, and second value of the clock 63 are included. When the second value included in the time adjustment signal is less than 30 seconds, the time setting unit 53 sets the hour value and minute value included in the time adjustment signal as the hour value and minute value of the internal clock 33, respectively. Set the value to zero.

  On the other hand, when the second value included in the time adjustment signal is 30 seconds or more, the time setting unit 53 performs carry adjustment in units of minutes. That is, when the second value included in the time adjustment signal is 30 seconds or more, the time setting unit 53 increases the minute value included in the time adjustment signal by 1, and as a result, this minute value is changed from 59 minutes to 00 minutes. Only when this happens, the hour value included in the time adjustment signal is increased by one. Then, the time setting unit 53 sets the hour value and the minute value relating to the time adjustment signal after such carry adjustment is performed to the hour value and the minute value of the internal clock 33, respectively, and the second value is set. Set to zero.

  In order to accurately adjust the time of the internal clock 33 of the parking fee adjusting machine 2 to the time matched with the standard time, it is desirable that the time adjustment signal transmission period is short, and ideally, the internal clock of the parking lot management machine 3 It is desirable that it is a moment when the second value of 63 becomes zero. However, on the other hand, in order to ensure that the inquiry signal is received by the inquiry signal receiving unit 74 within the time adjustment signal transmission period, the inquiry signal transmission unit 51 of the parking fee adjusting machine 2 is used during the time adjustment signal transmission period. Is more than the time interval for transmitting the inquiry signal.

  Furthermore, the time adjustment signal transmission period is the time synchronization execution time of the NTP server 20 and the parking lot management machine 3 described above, that is, the parking lot management machine 3 sends a time request signal to the NTP server 20, and the time of the NTP server 20 More than the execution time of a series of time synchronizations until the time of the internal clock 63 is synchronized with the time matching the standard time by a known calculation method defined by the NTP protocol based on the time information and the like. It is desirable that the time interval is sufficiently long.

  The time adjustment signal transmission period in this embodiment is set in consideration of these points. That is, since the transmission interval of the inquiry signal in this embodiment is 2 seconds, the time adjustment signal transmission period is set to a time point 2 seconds before the time point when the second value of the internal clock 63 of the parking lot management machine 3 becomes zero. The period from when the second value of the internal clock 63 becomes zero and the period from when the second value of the internal clock 63 becomes zero until two seconds elapse. Thus, the inquiry signal receiving unit 74 can reliably receive the inquiry signal within the time adjustment signal transmission period, and the time of the internal clock 33 can be set to a maximum of ± 2 seconds (inquiry signal) with respect to the standard time. The transmission time can be set to an accurate time.

  If the time error of the internal clock 33 of the parking fee adjusting machine 2 can be kept within ± 2 seconds, the time of the radio watch owned by the parking lot user and the time of the internal clock of the parking fee adjusting machine are It is possible to eliminate the disadvantage caused to the parking lot user due to the error. Furthermore, if the inquiry signal transmission interval is shorter than 2 seconds, the time adjustment signal transmission period can be shortened accordingly, and the time accuracy of the internal clock 33 can be further increased.

(Second embodiment of parking management system)
FIG. 8 shows the communication timing between the parking lot management machine and the parking fee adjusting machine in the parking lot management system according to the second embodiment of the present invention.

  In the parking lot management system according to the second embodiment of the present invention, the time adjustment signal transmission unit 76 of the parking lot management machine 3 includes the hour value, the minute value, and the second value of the internal clock 63 of the parking lot management machine 3. A time adjustment signal is transmitted to the parking fee settlement machine 2. The second value included in this time adjustment signal has a second value after the decimal point.

  The time setting unit 53 of the parking fee adjusting machine 2 starts from the time adjustment signal transmission unit 76 of the parking lot management machine 3 when a predetermined waiting time elapses from the time when the time adjustment signal reception unit 52 receives the time adjustment signal. The hour value and minute value included in the transmitted time adjustment signal are set to the hour value and minute value of the internal clock 33, respectively, and the second value is set to zero. The predetermined waiting time is a time indicated by a value obtained by subtracting 60 from the second value of the internal clock 63 included in the time adjustment signal.

  That is, the time setting unit 53 of the parking fee adjusting machine 2 calculates the predetermined standby time based on the second value included in the time adjustment signal received by the time adjustment signal reception unit 52 as follows, for example. As shown in FIG. 8, the minute value (minute value before carry adjustment) and the second value included in the time adjustment signal transmitted from the time adjustment signal transmitter 76 of the parking lot management machine 3 are 31 minutes 58.80 seconds. In this case, the time setting unit 53 calculates the time 1.20 seconds between 31 minutes 58.80 seconds and 32 minutes 0 seconds by performing the calculation according to the following equation.

32'00 "-31'58" 80 = 1 "20
(1 "20 minus 58" 80 from 60 ")
In this example, the time setting unit 53 sets the internal clock 33 at 32 minutes 0 seconds when 1.20 seconds have elapsed from the time 31 minutes 58.80 seconds when the time adjustment signal reception unit 52 receives the time adjustment signals. Set the seconds value to zero.

  According to the second embodiment of the present invention, the time of the internal clock 33 of the parking fee payment machine 2 can be more accurately set to the time that matches the standard time. In particular, according to the second embodiment of the present invention, the second value of the time of the internal clock 33 of the parking fee adjusting machine 2 is changed to the second value of the time that matches the standard time until the value after the decimal point is reached with high accuracy. Can be matched.

(Third embodiment of parking management system)
Furthermore, in the parking lot management system according to the third embodiment of the present invention, the predetermined waiting time is determined based on the time indicated by the value obtained by subtracting the second value of the internal clock 63 included in the time adjustment signal from 60. This is a time obtained by subtracting the communication time between the management machine 3 and the parking fee adjusting machine 2 and the time required for the time setting unit 53 of the parking fee adjusting machine 2 to perform the time setting process of the internal clock 33.

  The time setting unit 53 of the parking fee settlement machine 2 includes the parking lot management unit 3 and the parking fee settlement that are measured in advance and stored in the memory 62, the second value included in the time adjustment signal received by the time adjustment signal reception unit 52. Based on the communication time with the machine 2 and the time taken for the time setting unit 53 of the parking fee adjusting machine 2 to perform the time setting process of the internal clock 33, which is measured in advance and stored in the memory 62, For example, the predetermined waiting time is calculated as follows.

  That is, as shown in FIG. 8, the minute value (minute value before carry adjustment) and the second value included in the time adjustment signal transmitted from the time adjustment signal transmission unit 76 of the parking lot management machine 3 are 31 minutes 58. It is 80 seconds, and the communication time between the parking lot management machine 3 and the parking fee adjusting machine 2 and the time required for the time setting unit 53 of the parking fee adjusting machine 2 to perform the time setting process of the internal clock 33 are totaled. If the calculated value is α, the time setting unit 53 calculates the predetermined waiting time by performing the calculation according to the following equation.

32'00 "-31'58" 80-α = 1.20-α
(Value obtained by subtracting communication time and processing time α from 1 ″ 20 obtained by subtracting 58 ″ 80 from 60 ″)
In this example, the time setting unit 53 sets the internal clock 33 at the time when (1.20−α) seconds have elapsed from the time 31 minutes 58.80 seconds when the time adjustment signal reception unit 52 received the time adjustment signal. Set the seconds value to zero.

  Note that the details of the error vary depending on the scale of the system, the arrangement of equipment and the state of the communication infrastructure in the implementation, and therefore it is not always necessary to consider the detailed adjustment of the waiting time for the parking lot management machine 3 and the parking fee adjustment machine. 2 and the time required for the time setting unit 53 of the parking fee settlement machine 2 to perform the time setting process of the internal clock 33, and the longer one is used. It is also possible to switch the calculation pattern as appropriate by incorporating a learning function.

  According to the third embodiment of the present invention, the time of the internal clock 33 of the parking fee adjusting machine 2 can be more accurately set to the time that matches the standard time. In particular, according to the third embodiment of the present invention, the second value of the time of the internal clock 33 of the parking fee adjusting machine 2 is changed to the second value of the time that matches the standard time until the value after the decimal point is reached. It can be adjusted to high accuracy.

  In the first embodiment described above, the time adjustment signal including the hour value, the minute value, and the second value of the internal clock 63 of the parking lot management machine 3 is transmitted from the parking lot management machine 3 to the parking fee adjusting machine 2, When the time setting unit 53 of the parking fee adjusting machine 2 sets the time of the internal clock 33, the hour value and the minute value to be set in the internal clock 33 are set in minutes based on the second value included in the time adjustment signal. Although the case where carry processing is performed has been described as an example, the present invention is not limited to this. For example, the time adjustment signal transmission period is a period from a time before a time when the second value of the internal clock 63 of the parking lot management machine 3 becomes zero to a time when the second value of the internal clock 63 becomes zero. In this case, the time adjustment signal transmission unit 76 of the parking lot management machine 3 includes the time adjustment signal based on the second value of the internal clock 63 before transmitting the time adjustment signal to the parking fee settlement machine 2. Carrying processing in units of minutes may be performed on the value and the minute value, and a time adjustment signal including the hour value and minute value after the carry processing may be transmitted to the parking fee settlement machine 2. In this case, the time setting unit 53 of the parking fee adjusting machine 2 sets the time value and the minute value included in the time adjustment signal transmitted from the time adjustment signal transmission unit 76 of the parking lot management machine 3 to the time of the internal clock 33. The value is set as the value and the minute value as they are, and the second value of the internal clock 33 is set to zero when the time adjustment signal receiving unit 52 of the parking fee adjusting machine 2 receives the time adjustment signal.

  When the time adjustment signal transmission period is a period from when the second value of the internal clock 63 of the parking lot management machine 3 becomes zero until a predetermined time elapses, the time adjustment signal of the parking lot management machine 3 The transmission unit 76 transmits a time adjustment signal including the hour and minute values of the internal clock 63 to the parking fee adjustment machine 2, and the time setting unit 53 of the parking fee adjustment machine 2 sets the time adjustment signal of the parking lot management machine 3. The time value and the minute value included in the time adjustment signal transmitted from the transmission unit 76 are set as they are as the hour value and the minute value of the internal clock 33, and the time adjustment signal reception unit 52 of the parking fee adjusting machine 2 sets the time adjustment signal. May be set to zero when the internal clock 33 is received.

  In the above-described embodiment, the time adjustment signal transmission period is immediately after the time synchronization between the NTP server 20 and the parking lot management machine 3 is executed, and the second value of the internal clock 63 of the parking lot management machine 3 is zero for the first time. ± 2 seconds before and after the time point. As a result, the frequency of the time synchronization operation of the NTP server 20 and the parking lot management machine 3 in this embodiment is the same as the subsequent time adjustment signal transmission operation from the parking lot management machine 3 to the parking fee settlement machine 2. Become. However, this can be changed as appropriate. For example, the time synchronization between the NTP server 20 and the parking lot management machine 3 is performed every three hours of the internal clock 63 of the parking lot management machine 3 as shown in the above embodiment, and thereafter The time adjustment signal transmission operation to the parking fee settlement machine 2 may be executed, for example, every hour of the internal clock 63 of the parking lot management machine 3 at the timing when the second value at that time becomes next zero. Even if the frequency and the combination thereof are changed as appropriate, the effects of the present invention can be sufficiently exerted.

  Moreover, in each embodiment mentioned above, although the case where the parking lot management system 1 was applied to the flap type parking lot provided with the flap apparatus 4 was mentioned as an example, this invention is not limited to this, The gate provided with the gate apparatus It can be applied to a parking lot.

  Moreover, in each embodiment mentioned above, although the case where it connects between the parking lot management machine 3 and the NTP server 20 via the wide area communication network 16 and the internet 17 was mentioned as an example, this invention is not limited to this. For example, the parking lot management machine 3 and the NTP server 20 may be connected only by the Internet, or the parking lot management machine 3 and the NTP server 20 may be connected to another computer such as a wireless LAN (Local Area Network). You may connect via a network and the internet.

  Further, the flap device 4 in FIG. 1 is a specific example of a vehicle movement restriction device, and the Internet 17 in FIG. 2 is a specific example of a computer network. Further, the internal clock 33 in FIG. 3 is a specific example of the second internal clock, and the internal clock 63 is a specific example of the first internal clock. Further, the inquiry signal transmission unit 51 in FIG. 4 is a specific example of the inquiry signal transmission unit, the time adjustment signal reception unit 52 is a specific example of the time adjustment signal reception unit, and the time setting unit 53 is a specific example of the time setting unit. It is an example. Further, the time request signal transmission unit 71 in FIG. 5 is a specific example of the time request signal transmission unit, the time information reception unit 72 is a specific example of the time information reception unit, and the time synchronization unit 73 is a specific example of the time synchronization unit. For example, the inquiry signal receiver 74 is a specific example of the inquiry signal receiver, the response signal transmitter 75 is a specific example of the response signal transmitter, and the time adjustment signal transmitter 76 is a specific example of the time adjustment signal transmitter. It is an example.

  Further, the present invention can be appropriately changed without departing from the gist or idea of the invention that can be read from the claims and the entire specification, and a parking lot management system with such a change is also a technical idea of the invention. include.

It is a perspective view showing a parking lot management system which is a 1st embodiment of the present invention with a vehicle sensor, a flap device, etc. which are arranged in a parking space in a parking lot site. It is explanatory drawing which shows the parking lot control system by which the parking lot management system which is several 1st Embodiment of this invention was connected to the NTP server and the parking lot management center via the wide area communication network and the internet. It is a block diagram which shows the internal structure etc. of the parking fee payment machine and parking lot management machine in the parking lot management system of this invention. It is a block diagram which shows the structure of the parking fee adjusting machine implement | achieved by CPU of a parking fee adjusting machine. It is a block diagram which shows the structure of the parking lot management machine implement | achieved by CPU of a parking lot management machine. The timing chart which shows the communication timing between an NTP server and a parking lot management machine, and the communication timing between a parking lot management machine and a parking fee adjustment machine in the parking lot management system which is the 1st Embodiment of this invention, respectively. It is. It is a timing chart which shows the communication timing between the parking lot management machine and the parking fee adjustment machine in the parking lot management system which is the 1st Embodiment of this invention. It is a timing chart which shows the communication timing between the parking lot management machine and the parking fee adjustment machine in the parking lot management system which is the 2nd Embodiment of this invention.

Explanation of symbols

1 Parking Lot Management System 2 Parking Fee Settlement Machine 3 Parking Lot Management Machine 4 Flap Device (Vehicle Movement Restriction Device)
15 Parking management center 17 Internet (computer network)
20 NTP server 31 CPU
33 Internal clock (second internal clock)
51 Inquiry signal transmission unit (inquiry signal transmission means)
52 Time adjustment signal receiver (Time adjustment signal receiver)
53 Time setting section (time setting means)
61 CPU
63 Internal clock (first internal clock)
71 Time Request Signal Transmitter (Time Request Signal Transmitter)
72 Time information receiving unit (Time information receiving means)
73 Time Synchronizer (Time Synchronizer)
74 Inquiry signal receiving unit (inquiry signal receiving means)
75 Response signal transmission unit (response signal transmission means)
76 Time adjustment signal transmission unit (Time adjustment signal transmission means)

Claims (5)

A parking fee settlement machine that controls the vehicle movement restriction device that restricts the movement of the vehicle to the outside of the parking lot until the parking fee settlement process is completed, and a computer network installed on the parking fee settlement machine. A parking lot management system that is communicably connected to a parking lot management center via a parking lot management machine that performs a call or data transmission / reception with a parking lot user,
The parking lot management machine
A first internal clock;
A time request signal transmitting means for transmitting a time request signal for requesting the NTP server to transmit time information indicating a time matching the standard time managed by the NTP server to the NTP server via the computer network;
Time information receiving means for receiving the time information transmitted from the NTP server via the computer network in response to the time request signal transmitted by the time request signal transmitting means;
Time synchronization means for synchronizing the time of the first internal clock with the time matching the standard time by the time information received by the time information receiving means;
A time adjustment signal transmission for transmitting a time adjustment signal including at least an hour value and a minute value of the first internal clock to the parking fee adjusting machine at a predetermined time set based on the time of the first internal clock. Means and
The parking fee settlement machine
A second internal clock;
Time adjustment signal receiving means for receiving the time adjustment signal transmitted from the time adjustment signal transmission means of the parking lot management machine;
And sets each time value and min value of the second internal clock based on the time value and min value that is part of the received time alignment signal by the time setting signal receiving means, by the time setting signal receiving means A parking lot management system comprising: time setting means for setting a second value of the second internal clock to zero at the time when a time adjustment signal is received. The parking fee adjusting machine sends an inquiry signal to the parking lot managing machine at regular intervals to inquire whether there is information to be transmitted from the parking lot managing machine to the parking fee adjusting machine. Inquiry signal transmission means for transmitting to
The parking lot management machine
Inquiry signal receiving means for receiving the inquiry signal transmitted from the inquiry signal transmitting means of the parking fee adjusting machine;
Response signal transmitting means for transmitting a response signal to the inquiry signal received by the inquiry signal receiving means to the parking fee settlement machine;
The time adjustment signal transmission means transmits the time adjustment signal as a response signal to the inquiry signal when the inquiry signal is received within the time adjustment signal transmission period by the inquiry signal reception means. And
The time adjustment signal transmission period is a period from a time before a time when the second value of the first internal clock becomes zero to a time when the second value of the first internal clock becomes zero, or / 2. The parking lot management system according to claim 1, wherein the parking lot management system is a period from when the second value of the first internal clock becomes zero until a predetermined time elapses.   The time request signal transmission means of the parking lot management machine transmits the time request signal to the NTP server immediately after the response signal is transmitted to the parking fee settlement machine by the response signal transmission means. The parking lot management system according to claim 2. The time adjustment signal transmission means of the parking lot management machine transmits a time adjustment signal including an hour value, a minute value and a second value of the first internal clock to the parking fee settlement machine,
The time setting means of the parking fee adjusting machine sets the hour value and the minute value of the second internal clock based on the hour value and the minute value included in the time adjustment signal received by the time adjustment signal receiving means, respectively. And setting the second value of the second internal clock to zero when a predetermined standby time has elapsed from the time when the time adjustment signal is received by the time adjustment signal receiving means,
The predetermined waiting time is a time indicated by a value obtained by subtracting the second value of the first internal clock included in the time adjustment signal from 60,
The time setting means of the parking fee adjusting machine calculates the predetermined waiting time based on a second value included in the time adjustment signal received by the time adjustment signal reception means. Or the parking lot management system of 3. The time adjustment signal transmission means of the parking lot management machine transmits a time adjustment signal including an hour value, a minute value and a second value of the first internal clock to the parking fee settlement machine,
The time setting means of the parking fee adjusting machine sets the hour value and the minute value of the second internal clock based on the hour value and the minute value included in the time adjustment signal received by the time adjustment signal receiving means, respectively. And setting the second value of the second internal clock to zero when a predetermined standby time has elapsed from the time when the time adjustment signal is received by the time adjustment signal receiving means,
The predetermined waiting time is a communication between the parking lot management machine and the parking fee adjusting machine from a time indicated by a value obtained by subtracting the second value of the first internal clock included in the time adjustment signal from 60. A time or / and a time obtained by subtracting a time required for the time setting means of the parking fee adjusting machine to perform the time setting process of the second internal clock,
The time setting means of the parking fee adjusting machine includes a second value included in the time adjusting signal received by the time adjusting signal receiving means, and a communication time between the parking lot managing machine and the parking fee adjusting machine or / And the time setting means of the parking fee adjusting machine calculates the predetermined waiting time based on the time taken for performing the time setting process of the second internal clock. The parking lot management system according to 3.

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