KR20190113205A - Integrated control system of mechanical parking facility - Google Patents

Abstract

The present invention relates to an integrated control system for a mechanical parking facility, and more particularly, to an integrated control system for a mechanical parking facility, which enables access a PLC via a double authorization code, generates an authentication code periodically according to the management policy of a remote integrated management server, or according to an update command such that the authentication code of the PLC is periodically and variably updated, periodically or variably updates a PLC program, built into a library, according to the management policy of the remote integrated management server, allows an extension module for performing data communications with the remote integrated management server at an encryption level of 256 bits or higher to be embedded in a control panel, thereby preventing unlocking and PLC duplication or change caused by access to the PLC of an unauthorized person, preventing an external intrusion, and enhancing security. The integrated control system for a mechanical parking facility comprises: programmable logic controllers (PLCs) installed in the control panel built in each mechanical parking facility to control the operation of the mechanical parking facility and collect operation and control information; the expansion module mounted on the control panel to manage authentication for access to the PLC, receive the operation and control information collected from the PLC, and transmit the same to the remote integrated management server; and the remote integrated management server receiving the operation and control information to control each mechanical parking facility and control the authentication management policy of the extension module.

Description

Integrated control system of mechanical parking facility

The present invention relates to a mechanical parking facility integrated control system, and in particular, to enable access to a programmable logic controller (PLC) through a dual authentication code, and periodically or according to an update command according to the management policy of the remote integrated management server. Generate and update the authentication code of the PLC periodically, and periodically or variably update the PLC program that is library according to the management policy of the remote integrated management server. By installing an expansion module embedded in the control panel to perform communication, it is possible to prevent unlocking, PLC duplication or change by unauthorized access to the PLC, and mechanical parking facility integrated control system that can prevent external intrusion and enhance security. It is about.

Mechanical parking facility is a facility to provide parking space by inducing the entrance and exit of a vehicle safely by using a mechanical device.It is installed in a building that cannot secure a large amount of parking space. It is used.

Recently, as the vehicle penetration rate increases and the city center expands, the lack of parking space is a serious problem, and as a way to solve such problems, various researches on mechanical parking facilities have been made. ought.

Typically, a mechanical parking facility is equipped with a programmable logic controller (PLC), and the PLC is configured to control each driving unit and collect log information and error information for each part through sensors. Since the mechanical parking facilities configured in this way are installed in the field, various kinds of contaminants, electric power loads, communication loads, environmental conditions, external shocks, etc. cause a failure. How quickly responding to obstacles is a very important issue directly related to the performance of the parking facility.

However, in the past, when a failure occurs, the maintenance company is dispatched to the site by the report of the facility manager or customer to identify the cause of the failure, and then recovery is performed. Excessive delay and lack of speed has structural limitations. In particular, when a disturbance occurs in the middle of the night, the time until the failure recognition, notification, reception and on-site visits are further delayed, not only to reduce the convenience of customers, but also increase the complaints.

In order to solve this problem, it is necessary to introduce a known remote management system into a mechanical parking facility system. In this case, a remote management system detects a failure of a specific equipment to be managed by a remote server, and when a failure occurs, promptly a maintenance company System to notify the user.

In this regard, the Republic of Korea Patent No. 10-1817219 (hereinafter referred to as "prior art document") refers to the IOT equipment that is installed to be compatible with the various standards and standards of PLC (Programmable Logic Controller) of the mechanical parking facility This paper proposes an automatic fault detection system for mechanical parking facilities using IOT equipment that can quickly detect faults and at the same time recover faults to a normal state when a fault occurs, thereby minimizing secondary damage.

By the way, such prior art documents merely suggest a technical configuration that can be quickly recovered in the event of a failure to prevent secondary damage, and the authentication reinforcement method or security that can prevent the unlocking of the PLC, replication or change of the PLC There is no suggestion about reinforcement.

If the PLC that drives the mechanical parking facility is easily unlocked by an unauthorized person, or is easily accessed and easily copied or changed, unexpected accidents may occur, resulting in damage and loss of life and property. Can be.

Republic of Korea Patent No. 10-1817219 (Notification date: January 10, 2018, the title of the invention: Automatic fault detection system for mechanical parking equipment using IOT equipment)

The present invention was devised to solve the problems of the prior art as described above, to enable access to the PLC through a double authentication code, and generates an authentication code periodically or according to the update command according to the management policy of the remote integrated management server. In addition, the authentication code of the PLC is periodically updated, and the PLC program that is library is periodically updated or changed according to the management policy of the remote integrated management server. By installing an expansion module embedded in the control panel to prevent unlocking, PLC duplication or change by unauthorized persons access to the PLC, and integrated parking control system for mechanical parking facilities that can prevent external intrusion and enhance security. Its purpose is to provide.

In order to solve the technical problem as described above, the constituent means of the integrated mechanical parking facility control system of the present invention are installed in a control panel constructed in each mechanical parking facility to control the operation of the mechanical parking facility and collect operation and control information. Programmable Logic Controllers (PLCs), an expansion module installed in the control panel to manage authentication for access to the PLC, receive an operation and control information collected from the PLC, and transmit it to a remote integrated management server, and the operation and control information. It is characterized in that it is configured to include a remote integrated management server for controlling each mechanical parking facility receiving the transmission and control the authentication management policy of the expansion module.

Here, the PLC stores and manages an authentication code generated and provided by the expansion module, and the expansion module controls the PLC access permission procedure to proceed through an authentication code when the PLC access is attempted, and the PLC Access is allowed only when the same authentication code as the storage management code is input.

Herein, the extension module periodically generates a new authentication code and provides it to the PLC according to the authentication management policy provided by the remote integrated management server, and the PLC updates the authentication code stored and managed by the new authentication code. It features.

According to the mechanical parking facility integrated control system of the present invention having the above problems and solving means, to enable the PLC access through the dual authentication code, and the authentication code periodically or according to the update command in accordance with the management policy of the remote integrated management server To generate a variable update of the authentication code of the PLC periodically, and to periodically or variablely update the PLC program that is library according to the management policy of the remote integrated management server. Since the expansion module for performing data communication is embedded in the control panel, it is possible to prevent unlocking, PLC duplication or change by unauthorized access to the PLC, and to prevent external intrusion and enhance security.

1 is a schematic block diagram of a mechanical parking facility integrated control system according to an embodiment of the present invention.
2 is a detailed block diagram of a mechanical parking facility integrated control system according to an embodiment of the present invention.

Hereinafter, with reference to the accompanying drawings will be described in detail a preferred embodiment of the present invention mechanical parking facility integrated control system having the above problems, solving means and effects.

In this process, the size or shape of the components shown in the drawings may be exaggerated for clarity and convenience of description. In addition, terms that are specifically defined in consideration of the configuration and operation of the present invention may vary depending on the intention or custom of the user or operator.

1 is a schematic block diagram of a mechanical parking facility integrated control system according to an embodiment of the present invention, Figure 2 is a detailed block diagram.

As shown in Figure 1 and 2, the mechanical parking facility integrated control system 100 according to an embodiment of the present invention is programmable logic controllers (PLC) (10) installed in each control panel (1), the Remote integrated management server that is embedded in the control panel (1) and performs data communication with the expansion module 30 for performing real communication with the PLC 10 and the expansion module 30 with an encryption level of 256 bits or more And a local management device 40 that optionally performs data communication with the expansion module 30 and the remote integrated management server 50 at an encryption level of 256 bits or more. Can be.

Each of the programmable logic controllers (PLC) 10 is installed in each control panel 1 constructed in each mechanical parking facility to control the operation of each mechanical parking facility, and to collect the operation and control information.

Each mechanical parking facility guides and performs a vehicle's ingress and parking according to a control operation of the corresponding PLC 10, and a plurality of sensors are arranged at various locations. As such, each of the mechanical parking facilities are installed at the site to induce the entry and exit of the vehicle to provide a parking space of the vehicle, according to the parking method lift type, plane reciprocating type, vertical circulation type, multilayer circulation type, etc. These mechanical parking facilities are already well known techniques, and thus detailed descriptions thereof will be omitted.

Each of the mechanical parking facilities is connected to the PLC 10 and driven through the control of the PLC 10. In addition, a plurality of sensors are installed for each predetermined part in the mechanical parking facilities. At this time, the sensing data detected by each sensor is input to the PLC (10). The PLC 10 corresponding to the mechanical parking facility is connected to each of the mechanical parking facilities, and is configured to detect failure by analyzing sensing data input from sensors of the connected mechanical parking facility.

More specifically, each of the PLC 10 manages and controls the operation of the mechanical parking facility connected to each of the mechanical parking facilities. In addition, each of the PLC 10 analyzes the sensing data input from the sensors of the connected Sykes mechanical parking facility to detect the operation state or failure and type. In addition, when it is determined that a failure occurs, each of the PLCs 10 outputs a failure generation signal to the expansion module 30 according to a preset output method.

Specifically, each of the PLC (10) controls the operation of the corresponding mechanical parking facility connected to each other, and continuously collects the operation status information related to the failure or failure and the control information related to the operation control. Furthermore, the operation and control information and the analysis or determination result information thereof are output to the expansion module 30.

Each of the PLCs 10 is built in a control panel 1 built in the corresponding mechanical parking facility. The control panel 1 is essentially constructed in a general mechanical parking facility, has an input / output terminal or port, and an operation panel is connected or attached. The PLC 10 and the expansion module 30 are embedded in the control panel 1.

The PLC 10 built in the control panel 1 may be externally accessed through an input port or a terminal. However, the PLC 10 according to the present invention is not directly accessible through the input port or terminal from the outside as in the prior art, but is configured to be accessible through the expansion module 30.

When the expansion module 30 attempts to access the PLC 10 through the input port or the terminal from the outside, the expansion module 30 allows access to be allowed through an authentication process according to a predetermined authentication policy, and the PLC 10 Various information output from the data, that is, operation and control information, and analysis or determination result information (failure or failure information, control information, control result information, etc.) about them are received and transmitted to the remote integrated management server 50 to be integrated. To be controlled.

Specifically, the expansion module 30 is mounted on the control panel 1 to manage authentication for the corresponding access to the PLC 10 and to receive the operation and control information collected from the corresponding PLC 10 remotely. Perform the operation of transmitting to the integrated management server (50).

As described above, the expansion module 30 simply receives the operation and control information collected by the PLC 10 and analysis or determination information thereof and transmits the received information to the remote integrated management server 50 as an upper element. In addition, when accessing the PLC 10 from the outside, mediation and control is performed so that access can be determined through an authentication process according to a predetermined authentication policy.

As a result, the PLC 10 is not made easy to access from the outside, unlike the existing, since it is configured so that access can be determined only through the authentication process according to a certain authentication policy, unlocking of the PLC, PLC program Replication and modification is not as simple as it is, and this prevents unauthorized access to the PLC, preventing unexpected accidents and improving intrusion prevention and security.

The expansion module 30 transmits the various information input from the PLC 10 to the remote integrated management server 50. Then, the remote integrated management server 50 may monitor each PLC 10 corresponding to the expansion module 30 and mechanical parking facilities corresponding to the PLC 10, and remotely as necessary. Since it can be controlled, a plurality of mechanical parking facilities and the corresponding PLC 10 can be remotely integrated.

When the remote integrated management server 50 determines or recognizes that the mechanical parking facility has a failure through the various information, the PLC 10 may be controlled to reset so that the failure of the mechanical parking facility can be solved. have. That is, the remote integrated management server 50 transmits a reset control signal to the expansion module 30 built in the control panel 1 corresponding to the failing mechanical parking facility. Then, the expansion module 30 controls the PLC 10 to be reset in response to the reset control signal.

Furthermore, the remote integrated management server 50 may control the PLC 10 program to be updated or updated. To this end, the remote integrated management server 50 transmits a PLC program to be changed to the expansion module 30 corresponding to the PLC 10 that needs to be updated, and at the same time or later to transmit an update control signal. Can be. Then, the expansion module 30 may update the program of the PLC 10 in response to the control of the remote integrated management server 50.

As described above, the remote integrated management server 50 receives the operation and control information to control each mechanical parking facility, and furthermore, if the external integrated management server 50 intends to access the PLC 10 from the outside, the expansion module. It performs an operation of controlling the authentication management policy of the extension module 30 so that the 30 can control the authentication process.

As such, the remote integrated management server 50 receives the operation and control information to control each mechanical parking facility and to control the authentication management policy of the expansion module 30. The authentication management policy of the extension module 30 is a policy that can enhance authentication and improve security. The authentication management policy of the extension module 30 corresponds to a policy related to application of a double authentication code, update of authentication code, and update of a library program.

In order to allow external access to the PLC 10 only to authorized persons, basically, the PLC 10 stores and manages an authentication code, and the authentication code input from the outside is the same as the authentication code stored and managed by the PLC 10. Only access is allowed, and the expansion module 30 controls the authentication process as described above when the external device tries to access the PLC 10. The authentication code stored and managed in the PLC 10 may be generated and provided by the extension module 30, and may be a single authentication code, but it is more preferably a double authentication code, and further preferably continuously updated. .

That is, the PLC 10 stores and manages an authentication code generated and provided by the expansion module 30, and the expansion module 30 attempts to access the PLC through an input terminal or port from the outside. The PLC access permission procedure is controlled to proceed through the PLC, and the PLC 10 permits access only when the same authentication code as the storage management authentication code is input.

Preferably, the PLC 10 stores and manages two different authentication codes. For this purpose, the expansion module 30 generates two different authentication codes and provides them to the PLC 10. According to the authentication management policy of the management server 50, the two authentication codes are controlled to be updated every specific period or according to an update control signal at a specific time point of the remote integrated management server 50.

As described above, the PLC 10 stores and manages two different authentication codes, and two authentication codes inputted sequentially or at a time difference through an input port or a terminal from the outside, and two authentication codes stored and managed are provided. Allow access only if they are identical.

This authentication process is carried out and controlled through the expansion module 30. Specifically, when the external access to the PLC 10 is attempted, the expansion module 30 receives the first authentication code from the external access device to provide to the PLC 10, the primary from the PLC 10 When the authentication confirmation is delivered, the second authentication code is received from the external access device and provided to the PLC 10, and when the second authentication confirmation is transmitted from the PLC 10, the PLC 10 can finally be accessed. Connect it so that

In order to perform this operation, the expansion module 30 includes an authentication and security control unit 31, as shown in FIG. That is, the authentication and security control unit 31 performs an operation for controlling the above authentication process to proceed when the PLC access from the outside.

The authentication procedure for accessing the PLC 10 through the double authentication code described above proceeds under the control of the authentication and security control unit 31, and the policy regarding the progress of the authentication procedure through the double authentication code is remotely integrated. It is determined according to the control command of the management server 50. That is, the remote integrated management server 50 transmits a "control command for applying dual authentication codes" to the authentication and security control unit 31 of the extension module 30 so that the authentication management policy for applying the dual authentication code is reflected. To transmit. Then, the authentication and security control unit 31 of the expansion module 30 may be provided with two different authentication codes, that is, a double authentication code to the PLC 10 according to the "control command of applying the dual authentication code". Further, according to the separate authentication management policy of the remote integrated management server 50, the two authentication codes are controlled to be updated periodically or when there is an update command.

In this way, the authentication and security control unit 31 allows to continuously update the authentication code of the PLC (10). Specifically, the expansion module 30 generates a new authentication code to the PLC 10 periodically or whenever there is an update command according to the authentication management policy provided by the remote integrated management server 50, The PLC 10 performs an operation of updating the authentication code stored and managed by the new authentication code.

In order to perform such an operation, the extension module 30 includes an authentication code generator 33. The authentication code generator 33 generates an authentication code under the control of the authentication and security control unit 31. Then, the authentication and security control unit 31 provides the new authentication code generated by the authentication code generation unit 33 to the PLC 10 to be updated. The PLC 10 updates and replaces the authentication code currently stored and managed with the newly provided new authentication code.

In more detail, the authentication and security control unit 31 is provided with an authentication management policy for updating the authentication code from the remote integrated management server 50. For example, the remote integrated management server 50 transmits an authentication management policy regarding the authentication code update corresponding to the "authentication code update period" to the authentication and security control unit 31. The authentication and security control unit 31 controls the authentication code generation unit 33 to generate a new authentication code at each authentication code update period. Then, the authentication code generation unit 33 generates a new authentication code, the authentication and security control unit 31 provides the generated new authentication code to the PLC (10). The PLC 10 having received the new authentication code updates the authentication code by newly storing and managing the new authentication code.

If, as described above, the authentication and security control unit 31 is provided with the authentication management policy for applying the dual authentication code from the remote integrated management server 50, the authentication code generation unit (for each authentication code update period) 33) control to generate two authentication codes so that two authentication codes are updated at the same time, or control to generate only one authentication code in turn so that the authentication code is alternately updated.

As such, when the authentication and security control unit 31 controls the authentication code generation unit 33 to generate a new authentication code to generate a new authentication code, the authentication and security control unit 31 generates the new authentication code. Not only provided to the PLC 10, but also necessarily transmitted to the remote integrated management server (50). As a result, the remote integrated management server 50 integrally stores and manages the authentication code stored and managed in each PLC 10 corresponding to each mechanical parking facility.

The expansion module 30 is connected one-to-one with the PLC 10 to perform serial communication. In addition, the remote integrated management server 50 also needs to input the authentication code that is stored and managed in the PLC 10 in order to access the PLC 10 through the expansion module 30. As a result, if the remote integrated management server 50 or the expansion module 30 does not know the authentication code stored and managed in the PLC 10, they also cannot access the PLC 10, Therefore, the authentication code and the program library of the PLC 10 cannot be updated.

Since the expansion module 30 is embedded in the control panel 1, in some cases, the expansion module 30 may be separated from the control panel 1 and stolen, or a self failure may occur. In this case, after the new expansion module is mounted in the control panel 1, in order for the new expansion module to access the PLC 10, it is necessary to know an authentication code that the new expansion module is stored and managed in the PLC 10. .

In preparation for such a situation, the authentication and security control unit 31 provides a new authentication code to the PLC 10 and also transmits it to the remote integrated management server 50 at the same time. Then, when the new expansion module 30 is newly mounted in the control panel 1, the remote integrated management server 50 provides the authentication code of the PLC 10 to the new expansion module 30 to provide the PLC ( 10), as a result, it is possible to continuously update the authentication code and the program library of the PLC (10) afterwards.

On the other hand, the configuration program of the PLC 10 is not composed of source code, but is composed of a program library. That is, the PLC 10 corresponds to a library PLC program. Since the PLC 10 is configured as a library program as described above, even if access is made to the PLC 10 by an unauthorized person, the PLC program can not be easily changed, and even after being duplicated. Can be difficult to reuse.

In addition, the program constituting the PLC 10 is also configured to be updated periodically or whenever there is an update command according to the update policy of the remote integrated management server 50. To this end, the expansion module 30 includes a library storage unit 35.

As described above, the PLC 10 is composed of a program libraryed for a specific purpose. Therefore, the PLC program constituting the PLC 10 is preferably configured to be updated in units of libraries. When the PLC program is composed of a plurality of libraries, all of the plurality of libraries may be updated at one time, or only some libraries may be updated.

The library storage unit 35 of the expansion module 30 stores and manages a library for updating the PLC program of the PLC 10. The library storage unit 35 stores and manages a library constituting the PLC program received from the remote integrated management server 50.

In detail, the remote integrated management server 50 transmits a library to be updated to the expansion module 30 corresponding to the PLC 10 to which the PLC program is to be updated. Then, the library to be updated is stored and managed in the library storage unit 35 of the expansion module 30.

Thereafter, the authentication and security control unit 31 stores the library every time a PLC program update period provided from the remote integrated management server 50 or whenever the remote integrated management server 50 transmits a PLC program update command. A PLC program library stored and managed at 35 is provided to the PLC 10 to be updated.

The remote integrated management server 50 may transmit a PLC program update command together with the library to be updated, wherein the authentication and security control unit 31 temporarily stores the transmitted library in the library storage unit 35. After the library transfer is completed, the program is immediately provided to the PLC 10 so that the PLC program is updated. Through such an update process, the library storage unit 35 may be operated at a minimum capacity corresponding to a buffer function.

On the other hand, as shown in Figures 1 and 2, the mechanical parking facility integrated control system 100 according to the present invention may further comprise a local management device (40). The local management device 40 may perform a relay role between the remote integrated management server 50 and the expansion module 30 described above, and to efficiently manage the mechanical parking facilities at the site where the mechanical parking facilities are located. Can be adopted.

Data communication between the above-described expansion module 30 and the remote integrated management server 50 or between the expansion module 30 and the local management device 40 and the remote integrated management server 50 is performed at a high encryption level. It is preferable to proceed. Specifically, the mechanical parking facility integrated control system 100 according to the present invention is configured such that data communication is performed at an encryption level of 256 bits or more from the expansion module 30 to the remote integrated management server 50. Such a configuration can further improve security.

Although embodiments according to the present invention have been described above, these are merely exemplary, and it will be understood by those skilled in the art that various modifications and equivalent embodiments of the present invention are possible therefrom. Therefore, the true technical protection scope of the present invention will be defined by the following claims.

1: Control panel 10: PLC (Programmable Logic Controller)
30: expansion module 31: authentication and security control
33: authentication code generation unit 35: library storage unit
40: local management device 50: remote integrated management server
100: mechanical parking equipment integrated control system

Claims (3)

Programmable Logic Controllers (PLC) installed in a control panel built in each mechanical parking facility to control the operation of the mechanical parking facility and collect operation and control information;
An expansion module mounted on the control panel to manage authentication for access to the PLC, and receive and transmit operation and control information collected from the PLC to a remote integrated management server;
And a remote integrated management server configured to receive the operation and control information to control each mechanical parking facility and control the authentication management policy of the expansion module.
The method according to claim 1,
The PLC stores and manages an authentication code generated and provided by the expansion module, and the expansion module controls the PLC access permission procedure to proceed through an authentication code when the PLC access is attempted, and the PLC manages the storage. Mechanical parking facility integrated control system, characterized in that the access is allowed only when the same authentication code is inputted.
The method according to claim 2,
The expansion module periodically generates a new authentication code and provides it to the PLC according to the authentication management policy provided by the remote integrated management server, and the PLC updates the authentication code stored and managed by the new authentication code. Mechanical parking equipment integrated control system.

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