KR20110067824A - Remote control system for chiller and method therefor - Google Patents

Abstract

PURPOSE: A remote control system for a refrigerator and a control method therefor are provided to monitor the operating state of a refrigerator continuously and individually observe and manage states of components of the refrigerator. CONSTITUTION: A remote control system for a refrigerator comprises a refrigerator controller(10), a serial device server(20), and a management server(30). The refrigerator controller is attached to individual components of the refrigerator. The refrigerator controller is connected to a wireless and wired sensor communications terminal(300). The serial device server loads data of the controller to a wired and wireless network(100) including the Internet network. The serial device server transfers a control command input through a management server of a user and an administrator to the controller. The management server collects data through the wired and wireless network. The management server indicates the collected data on a monitor screen. The management server generates a signal indicating the state of the refrigerator based on an abnormality signal and a warning signal generated in the refrigerator.

Description

Refrigerator remote control system and control method using this system {Remote control system for chiller and method therefor}

The present invention relates to a refrigerator remote control system for attaching a sensor for monitoring the operating state to the refrigerator and transmitting the operating state of the refrigerator to the management server remotely using wired or wireless communication.

In general, there are many signs of abnormality of the refrigerator, and several kinds of abnormalities are common in monitoring the operating state of individual components. However, if early diagnosis and maintenance are made in advance for such various abnormal operations, the damage of the freezer can be minimized. In particular, the damage of the freezer and the economic damage of the installation plant can be minimized. Can be.

Existing remote control methods of the refrigerator have generally performed remote management of the refrigerator by monitoring the condition of the surrounding factors such as the operating temperature, pressure, opening, and the like of the individual refrigerators and individual components of the refrigerator. This method is capable of efficient management of individual refrigerators, but has a disadvantage in that individual management of remote refrigerators is difficult.

Accordingly, the present invention has been proposed to solve the conventional problems as described above, an object of the present invention is to monitor the operating state of the refrigerator using a detachable sensor, for example, a ubiquitous sensor, and the operating state to the management server Its purpose is to achieve reliable operation to inform and keep the refrigerator in good working condition at all times.

In order to achieve the above object, the present invention,

Attached to each individual component of the refrigerator, it is powered on its own and enables wired and wireless signals to allow administrators and users to control the operation from a distance, and to select and collectively control each corresponding refrigerator. A refrigerator controller connected to a wired / wireless transceiver for mutual wired / wireless communication,

It connects to RS-232 or RS-485 serial port of the refrigerator controller to load main data such as temperature, pressure and operation information of the controller on the internet network, and control commands through the management server of the administrator and user side connected to the refrigerator wired or wireless. If you enter a serial device server that delivers this wired and wireless to the controller of the refrigerator,

 Installed in a service center or a remote monitoring center, the main data can be collected through a wired or wireless communication network including an internet network, displayed on a monitor screen, the entire data can be stored, and the refrigerator can be controlled remotely. It generates a signal informing the state of the refrigerator according to the abnormal signal and the alarm signal of the generated state, and it is configured to include a management server for processing according to the control command of the administrator generated on the computer screen by the remote administrator There is a characteristic.

The management server is configured to notify the remote administrator of the input state signal of the corresponding refrigerator via the wired / wireless transceiver, and when the remote administrator inputs a forced driving set value change control command through the wired / wireless transceiver, the controller according to the control command of the administrator. desirable.

It is preferable that the communication terminal is connected to the wired / wireless transceiver to receive or confirm an abnormal state of the refrigerator, and a communication terminal for easily transmitting a control signal for the refrigerator from a remote location is provided.

The remote control system of the remote freezer according to the present invention can monitor the operating state of the remote freezer at all times, thereby helping to ensure reliable operation of each component of the freezer.

In addition, the remote control system of the refrigerator proposed in the present invention, in addition to the management of individual refrigerators and buildings generally proposed and performed, monitors the operation status of individual components of the refrigerator, and immediately in case of abnormality, the management server Notification provides the advantage of efficient observation and management of the individual components of the refrigerator.

Therefore, according to the present invention, it is possible to observe the operating state of the individual refrigerators at all times, which may help the operation of a good refrigerator.

In addition, the present invention can be expected to reduce the management cost through the prevention of abnormal operating conditions in the individual refrigerators with a minimum number of management personnel.

Referring to the preferred embodiment of the refrigerator remote control system according to the present invention configured as described above in detail with reference to the accompanying drawings as follows. In the following description of the present invention, detailed descriptions of well-known functions or configurations will be omitted if it is determined that the detailed description of the present invention may unnecessarily obscure the subject matter of the present invention. It is to be understood that the following terms are defined in consideration of the functions of the present invention, and may be changed according to the intention of the user, the operator, or the precedent, and the meaning of each term should be interpreted based on the contents will be.

1 is a block diagram of a remote control system of a refrigerator according to an embodiment of the present invention.

The remote control device of the refrigerator as described above includes a controller 10 for controlling the refrigerator as a whole as shown in FIG. 1; A serial device server 20 connected to the RS-232 or RS-485 serial port of the refrigerator controller 10 to load main data such as temperature, pressure, and operation information of the controller 10 onto the Internet network; Installed in a service center or a remote monitoring center, the main data is collected through the internet wired / wireless communication network 100, displayed on a monitor screen, and is made of a management server 30 that stores the entire data and controls the refrigerator remotely. .

In other words, a system for remotely controlling a refrigerator at a remote location using the Internet according to the present invention is attached to each individual component of the refrigerator and is powered on its own, allowing administrators and users to control operation remotely. A refrigerator controller 10 connected to a wired / wireless sensor communication terminal 300 capable of wired / wireless signal transmission and enabling wired / wireless communication to select and collectively control the respective refrigerators, and the freezer controller 10. Connect to RS-232 or RS-485 serial port of) to load the main data such as temperature, pressure and operation information of the controller 10 to the wired / wireless communication network 100 including the Internet network, the manager connected to the freezer and wired and wireless When a control command is input through the management server 30 of the user side, the controller 10 of the corresponding refrigerator is inputted. Through the wired / wireless serial device server 20 and the serial device server 20, installed in a service center or a remote monitoring center, the main data is collected through the wired / wireless communication network 100 and displayed on a monitor screen. In addition, it is possible to store the entire data and to control the refrigerator remotely, and to generate a signal informing the status of the refrigerator according to the abnormal signal and the alarm signal of the state generated in the refrigerator, and by the remote administrator on the computer screen The management server 30 is configured to process according to the generated control command of the administrator.

In addition, the management server 30 informs the remote administrator of the input state signal of the corresponding refrigerator through the wired / wireless sensor communication terminal 300 and the controller 10 and the remote administrator is forced through the controller 10. When an operation setting value change control command is inputted, it is configured to process according to the control command from the management server 30.

In addition, the wired / wireless sensor communication terminal 300 is configured to receive or confirm the abnormal state of the refrigerator, and has a function that allows the administrator to easily transmit a control signal for the refrigerator from a long distance.

In addition, the wired / wireless sensor communication terminal 300 having the component object identification tag 320 to which the measurement sensor unit 310 is attached includes a management server 30 that integrates the received data and monitors abnormal operation conditions; It consists of a wired and wireless transmission and reception unit 330 that can receive the operating state of the remote monitoring refrigerator and the management server 30.

In other words, the wired / wireless sensor communication terminal 300 includes an individual component identification tag 320, a measurement sensor unit 310, and a near distance wired / wireless transmission / reception unit 330. Individual component identification tag 320 and the near-field wired and wireless transceiver 330 is composed of a wired and wireless transmitter and receiver that can be assigned TAG.

Here, as an example of the near distance wired or wireless transceiver 330, it may be composed of a radio frequency identification (RFID), Bluetooth (Bluetooth), Zigbee (Zigbee) and the like. The measurement sensor unit 310 may use a single or multiple sensors capable of measuring a variety of parameter signals such as temperature, pressure, valve opening, motor current, operation mode of the individual components of the refrigerator, and each of the refrigerators at regular time periods. The operating signal of the component is measured and transmitted selectively over wired or wireless.

The output signal generated by the wire / wireless sensor communication terminal 300 is transmitted to the controller 10.

In addition, the signal received by the controller 10 receives the individual component identification tag 320 and the individual operation status signal of the individual component, the near-field wired and wireless transmission and reception unit 330 as described above RFID, Bluetooth, ZigBee TAG can be used for short-range wireless communication, and according to the receiving radius of each short-range wireless communication by constructing multiple near-field wireless receivers can systematically manage the receiving radius and multiple refrigerators.

The signal transmitted to the near distance wired / wireless transmitter / receiver 330 is sent to the management server 30 via the controller 10 and the serial device server 20 to process the signal.

The management server 30 stores the temperature, pressure, opening degree, operation mode, state, time and number, and history of individual components of the refrigerator (S410). In addition, the signal sensed by the wire / wireless sensor communication terminal 300 (S440) is analyzed for the presence or absence of the abnormality by comparing the operation signal classification and reference information of each individual component received from the controller 10 (S450).

The management server 30 analyzes whether there is an error and attaches the received signal to the existing individual component information DB when there is no error, and if there is an error, the management server (300) through the wired / wireless sensor communication terminal 300. At the same time, the abnormal signal is transmitted to the existing individual component information DB.

Here, when there is an error in the operation of the individual freezer of the transmitted signal, the management server 30 generates the abnormal condition alarm of the individual components of the refrigerator via the wired / wireless sensor communication terminal 300 and the corresponding controller 10 ( S450).

The wired / wireless communication network 100 includes a Short Message Service (SMS) Server, a Multimedia Message Service (MMS) Server, and the like, and transmits the above-mentioned refrigerator operation abnormal state alarm.

The wired / wireless communication network 100 is, for example, a mobile terminal capable of MMS, SMS transmission such as a mobile phone, PDA, SmartPhone, etc., whether the abnormality of the signal on the individual operation of the refrigerator, such as the location of the refrigerator, the refrigerator number, the pressure temperature, etc. Receives and forwards to the management server 30. (S470)

As shown in FIG. 2, when the program of the management server 30 is started, an initial screen in which site information, a communication port number or address, alarm status, etc., on which a refrigerator is installed is displayed is displayed, and each of the refrigerators installed in each region is displayed. Start communication with the controller 10. If the wired / wireless communication network 100 is connected, this operation is performed within a few seconds. When communication starts, data of all the refrigerators registered in the management server 30 are automatically stored in the server, and the storage cycle can be changed at any time. .

When the desired freezer is selected on the initial screen (FIG. 7), the selected freezer status screen (FIG. 3), an alarm screen (FIG. 4), a graph screen (FIG. 5), and a report screen (FIG. 6) may be viewed. In the status screen (Fig. 3), status input values such as temperature, pressure, valve opening, motor current, operation mode (local, remote, and schedule operation), operation status (operation and stop), operation time, and operation frequency of the refrigerator are displayed. and;

 Status output values such as operation of various pumps, heaters, valves, motors, etc., and interlocking outputs of cold water pumps, cooling water pumps, and cooling tower fan motors;

 Displays the cold water (temperature) set temperature, the maximum valve value for each operation mode (cooling / heating), restart delay time, and remote control values such as forced operation / stop.

In the alarm screen (FIG. 4), all alarms of the refrigerator are displayed and divided into an alarm predicted value displayed when the refrigerator approaches an alarm set value and an alarm state value displayed when an actual alarm occurs.

 The alarm predicted value displays refrigerant low temperature predictive alarm, condenser high pressure predictive alarm, regenerator high temperature / high pressure predictive alarm, coolant high temperature predictive alarm and the like.

Alarm status values include temperature sensor and pressure sensor abnormality, refrigerant overcooling alarm, cold water subcooling alarm, regenerator high temperature / high pressure alarm, cold water / cooling water level alarm, pump overheat / overcurrent alarm, burner error, evaporation pressure drop, condensation pressure rise. , Maneuver based abnormalities, etc. are displayed.

In the graph screen (Fig. 5), various values such as temperature, pressure, vane opening, burner opening, motor current, etc. of the refrigerator are continuously displayed in a predetermined cycle, and previous values stored in the main server can be viewed in a graph. have.

 Report screen (Fig. 6) is a screen showing the main data of the refrigerator stored in the main server can be shown in the form of hourly, daily, monthly and yearly. The hourly report shows the data of the unit in minutes and is generated every hour on the hour, the daily report shows the data in hours and is generated at midnight every day, the monthly report shows the data in daily units and is generated once a month, and the annual report data Is displayed monthly and is generated once a year. The data to be recorded in the report can be predefined. The data can be easily changed. The data recorded can be selected as the average value of each unit, or the instantaneous value of the time can be selected.

 Selecting remote control such as cold water (hot water) set temperature, operating mode (cooling / heating) valve maximum value, restart delay time, forced start / stop, etc., can change the value of the selected item or force remote operation or stop. have. For example, selecting the remote control of the chiller cold outlet temperature can change the chilled water outlet temperature set point and limit the range of setpoints that can be specified.

 When an alarm occurs in the freezer, the management server 30 automatically displays an alarm screen and sends a text message and an e-mail through the mobile phone text message transmission setting screen (FIG. 8). If cleared, you will also receive a text message and an email saying the alarm has been cleared. The mobile phone number of the person who wants to receive the text message can be specified in advance, easily changed, and the text message can be sent to several people at the same time. In the management server 30, communication is continuously performed, and all the predetermined data are stored in the database of the server.

As described above, according to the system for remote control of the freezer at a remote location using the Internet, it is possible to remotely monitor all data of the freezer installed and operated at a remote location, to change the main data remotely, In the event of an alarm, a text message on the mobile phone can be implemented to automatically notify the facility manager. In addition, all operating data are automatically stored in the remote server, and periodic reports such as the hourly, daily, monthly and yearly reports of the refrigerator can be automatically generated, and the alarm generation history can be automatically saved. It also has the function of automatically notifying the facility manager and service engineer by mobile phone text message or e-mail when an alarm occurs or is released from the remote refrigerator. The system can be installed and operated at the refrigerator manufacturer's service center, or at the central monitoring center at the site where the freezer is installed to simultaneously monitor or control the data. Furthermore, the management server 30 can control the refrigerator in a group mode or an individual mode using a communication terminal.

Although the above has been described as being limited to the preferred embodiment of the present invention, the present invention is not limited thereto and various changes, modifications, and equivalents may be used. Therefore, the present invention can be applied by appropriately modifying the above embodiments, it will be obvious that such application also belongs to the scope of the present invention based on the technical idea described in the claims below.

1 is a block diagram of a refrigerator remote control system according to an embodiment of the present invention.

FIG. 2 is a detailed flowchart illustrating a method of remotely controlling a refrigerator, including a method of forcibly controlling a freezer and an abnormal state monitoring method using the freezer remote control system of FIG. 1.

3 to 8 are conceptual views illustrating an example of displaying a menu that can be set by a user by the logic of FIG. 2.

Explanation of symbols on the main parts of the drawings

  10: controller 20: serial device server

  30: management server 100: wired and wireless communication network

 300: wired or wireless sensor communication terminal

 310: measurement sensor unit 320: object identification tag

 330: wired and wireless transceiver

Claims (8)

Attached to each individual component of the refrigerator, it is powered on its own and enables wired and wireless signals to allow administrators and users to control the operation from a distance, and to select and collectively control each corresponding refrigerator. Refrigerator controller 10 connected to the wired / wireless sensor communication terminal 300 capable of mutual wired / wireless selection communication and the RS-232 or RS-485 serial port of the refrigerator controller 10 to control the temperature and pressure of the controller 10. And loads main data such as driving information to the wired / wireless communication network 100 including the Internet network, and inputs a control command through the management server 30 of the manager and the user connected to the freezer / wireless unit to the controller 10 of the corresponding refrigerator. Through the serial device server 20 and the serial device server 20 for wired and wireless transmission to the service, Installed in the remote monitoring center or the remote monitoring center to collect the main data through the wired and wireless communication network 100, to display on the monitor screen, to store the entire data and to control the refrigerator remotely, the state generated in the freezer It generates a signal informing the state of the refrigerator according to the abnormal signal and the alarm signal of the, and the management server 30 to be processed in accordance with the control command of the administrator generated on the computer screen by the administrator of the remote Refrigerator remote control system. The method of claim 1, When the management server 30 informs the remote administrator of the input state signal of the corresponding refrigerator through the wired / wireless sensor communication terminal 300 or the controller 10 and the remote administrator inputs a forced driving set value change control command, management Refrigerator remote control system, characterized in that configured to process according to the control command from the server (30). The method of claim 2, The wired / wireless sensor communication terminal (300), the remote control system of the refrigerator, characterized in that the individual component identification tag (320), a measurement sensor unit (310), and a near-field wired / wireless transceiver (330). Measurement of various parameter signals, such as temperature, pressure, valve opening, motor current, operation mode, etc. of individual components of the refrigerator by means of the measuring sensor 310 accompanying the refrigerator remote control system according to claim 1. This possible single or multiple sensors can be used, measuring the operating signals of the individual components of the refrigerator at regular intervals and transmitting them via the controller 10, The output signal generated by the wire / wireless sensor communication terminal 300 is transmitted to the serial device server 20, The signal sent to the serial device server 20 is sent to the management server 30 to process the signal, The management server 30 stores the temperature, pressure, opening degree, operation mode, state, time and number and history of individual components of the refrigerator by DB (S410), The management server 30 compares the signal sensed by the wire / wireless sensor communication terminal 300 with the operation signal classification and reference information of each individual component received from the wire / wireless sensor communication terminal 300. ), The management server 30 generates an abnormal state alarm of the individual components of the refrigerator through the wired / wireless sensor communication terminal 300 and the controller 10 when there is an error in the operation of the individual refrigerator among the transmitted signals. The wired / wireless communication network 100 is, for example, a mobile terminal capable of MMS, SMS transmission such as a mobile phone, PDA, SmartPhone, etc., whether the abnormality of the signal on the individual operation of the refrigerator, such as the location of the refrigerator, the refrigerator number, the pressure temperature, etc. Receiving that includes the transfer to the management server 30, The management server 30 analyzes whether there is an error and attaches the received signal to the existing individual component information DB when there is no error, and if there is an error, the management server (300) through the wired / wireless sensor communication terminal 300. And transmitting the abnormal signal at the same time as 30) and attaching the abnormal information to the existing individual component information DB. The method of claim 4, wherein The wired / wireless communication network 100 is composed of a Short Message Service (SMS) Server, a Multimedia Message Service (MMS) Server, and the like, and the remote control method of the refrigerator comprising a step of transmitting an operation abnormal state alarm of the refrigerator. . The method of claim 5, Inputting an actuating signal of the individual components of the refrigerator, The configuration of the input menu is When the desired freezer is selected on the initial screen (FIG. 7), the selected freezer status screen (FIG. 3), an alarm screen (FIG. 4), a graph screen (FIG. 5), and a report screen (FIG. 6) may be viewed. In the status screen (FIG. 3), status input values such as various temperature, pressure, valve opening degree, motor current, operation mode (local, remote, and schedule operation), operation status (operation and stop), operation time, and operation frequency of the refrigerator are displayed. ;  Status output values such as operation of various pumps, heaters, valves, motors, etc., and interlocking outputs of cold water pumps, cooling water pumps, and cooling tower fan motors;  A remote control method of a refrigerator, comprising: a screen configured to display a cold water (temperature) set temperature, a valve maximum value for each operation mode (cooling / heating), a restart delay time, a remote control value such as forced operation / stop, and the like. The method of claim 6, Alarm menu for alarming the abnormal state is All the alarms of the refrigerator are displayed, and the remote control method comprising a screen configured to be divided into the alarm predicted value displayed when the freezer is close to the alarm set value and the alarm status value displayed when the actual alarm occurs. The method of claim 7, wherein In the alarm predict value, a refrigerant low temperature warning alarm, a condenser high pressure warning alarm, a regenerator high temperature / high pressure warning alarm, a coolant high temperature warning alarm, and the like are displayed. Alarm status values include temperature sensor and pressure sensor abnormality, refrigerant overcooling alarm, cold water subcooling alarm, regenerator high temperature / high pressure alarm, cold water / cooling water level alarm, pump overheat / overcurrent alarm, burner error, evaporation pressure drop, condensation pressure rise. Refrigerator remote control method, characterized in that the screen is configured to display the start-up abnormalities.

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