KR100902139B1 - Method for controlling in a showcase - Google Patents

Abstract

A control method of a show case is provided to prevent the communications barrier in advance by automatically resetting the power in the remote using software. A control method of the show case comprises following steps. The communication connection with each controller equipped in a plurality of show cases is performed(S101). If the communication is made, the communication state is detected and analyzed according to each controller(S103,S105). If the analyzed result has the communication barrier possibility(S107), the power source reset indication is produced(S109) so than the power source of each controller is reset remotely. The power reset data is provided to the controller having the communication barrier possibility(S111). The communication connection is made with each controller in which the power is reset(S113). If the time data is requested from the connected controller(S115), the current reference time data is transmitted to the connected controller on a real time basis(S117).

Description

Method for controlling in a showcase

The present invention communicates with a plurality of refrigeration / refrigerated show cases, analyzes the communication state, and when there is a risk of communication failure, the power of the show case is supplied by software (S / W) on the remote on-line. This technology relates to the control of the showcase for refrigeration / refrigeration to automatically reset to prevent communication failure in advance.

In general, the showcase for freezing / refrigeration is to maintain the cooling and freezing while displaying the product so that the ice cream and meat can be seen from the outside, this is made by the cooling circuit, the refrigeration cycle of the refrigerant circuit, The evaporator maintains the temperature while absorbing heat inside the freezer compartment as it exchanges heat.

That is, a low temperature is obtained by heat exchange between the evaporator heat and the outside temperature of the evaporator. At this time, frost is trapped on the surface of the evaporator by the difference between the heat of the evaporator and the outside temperature. The defrosting operation is performed to remove the frost for a time, and the defrosting operation removes the frost generated on the surface of the evaporator.

Looking at the power reset method in such a conventional show case, the user (administrator) to operate the power switch manually on the off-line (reset) to reset the power.

However, this conventional method is inconvenient due to manual operation because the power is reset by the manual operation of the user. In particular, when a manager manages several stores and a lot of show cases are installed in the stores, a great inconvenience arises as well as time loss due to the manual operation. In addition, when a large number of show cases are installed in a store in a situation in which power is required to be quickly reset, a considerable time for power reset is required. At this time, there may be a risk of deterioration of the stored food due to abnormality of the show case.

Accordingly, the present invention has been proposed to solve various problems occurring when the power is reset by manual operation in the conventional show case as described above.

The problem to be solved by the present invention is to communicate with a plurality of refrigeration / refrigerated show cases, and analyze the communication status when there is a risk of communication failure in the software (S / W) on the remote on-line The present invention provides a method of controlling a show case for automatically preventing a show failure by automatically resetting the power of the show case.

"Control method of the show case" according to the present invention for solving the above problems,

Performing communication connection with each controller provided in the plurality of show cases, and detecting and analyzing a communication state for each controller when communication is made;

If there is a possibility that a communication failure occurs as a result of the analysis, generating the power reset information and providing the power reset information to each controller that is likely to occur a communication failure to remotely reset the power of each controller.

The control method of the show case,

After connecting to each controller has been reset the power, characterized in that further comprising the step of transmitting the current reference time information to each controller in real time when time information is requested.

The detecting and analyzing of the communication state may include periodically attempting a plurality of communication connections for each controller, and determining a possibility of a communication failure or analyzing a communication connection time by comparing information on the number of attempted communication connections and the number of successful communication connections. To determine the possibility of a communication failure.

Each controller in the control method of the show case,

Initializing when the driving power is supplied, and attempting to connect with the information providing means while drawing a basic driving program to control driving of the show case;

In the communication connection with the information providing means, the received information is analyzed, and if a power reset command is performed, the power is automatically reset and then the initialization is performed.

The controller may further include connecting to the information providing means to request time information when the initialization is performed after the power reset, and receiving time information from the information providing means.

The controller may further include correcting the time of the RTC with the received time information and synchronizing with the information providing means.

According to the present invention described above, there is an advantage that can automatically reset the power of each show case remotely in software.

In addition, since the power of the multiple show cases can be automatically reset at the same time remotely by software, there is an advantage of eliminating the time and human waste caused by manual operation when resetting the power of the existing show case.

Hereinafter, described in detail with reference to the accompanying drawings a preferred embodiment of the present invention. If it is determined that the detailed description of the known function or configuration related to the present invention may unnecessarily obscure the subject matter of the present invention, the detailed description thereof will be omitted.

1 is a block diagram showing the configuration of a show case to which the present invention is applied, and is roughly divided into a show case 100 and an information providing means 200.

The show case 100 includes a function input unit 110, a temperature sensor unit 120, an RTC 130, a memory 140, a controller 150, a freezing unit 160, a defrost unit 170, and a power reset unit ( 180, the communication unit 190.

The function input unit 110 includes a plurality of function keys for selecting an operation mode and a defrost mode or for changing a defrost time, and provides a function signal to the controller 150 according to the operation of the corresponding function key. Or the keypad.

The temperature sensor unit 120 includes a plurality of temperature sensors used for cooling control and a temperature sensor for terminating defrost, and detects and provides the internal temperature for the control of each operation mode to the controller 150. Since the plurality of temperature sensors adopt a known temperature sensor that is used to detect the temperature in a general refrigerator or showcase, the detailed description thereof will be omitted.

The RTC 130 generates real-time time information and provides it to the controller 150. The real-time time information generated in this way is used in defrosting operation, late night operation, and power saving operation. The RTC 130 is preferably corrected to a reference time when a power reset occurs later.

The memory 140 stores a basic operation program, a defrost operation program for defrost control, a program for controlling late-night operation, a program for controlling power saving operation, a time correction program, and the like and store general digital information such as RAM or ROM. It is preferable to use a device.

The controller 150 controls the overall operation of the show case by drawing out the control program stored in the memory, and automatically controls the power reset operation when a power reset command is transmitted remotely through communication, and automatically after the power reset. It performs a function of requesting time information to the information providing means 200 located remotely. The controller 150 may use a control device having an integrated control function such as a central processing unit (CPU), a microprocessor, a main control unit (MCU), a microcomputer, and the like.

The refrigerating means 160 emits cold air by using a coolant and performs a refrigerating or freezing function through the refrigerant, and uses a general showcase refrigerating device such as a compressor, a condenser, an expansion valve, and an evaporator.

The defrost unit 170 performs a function for removing frost generated during a refrigeration or freezing function, and includes a defrost heater.

The power reset unit 180 operates to reset the power of the show case under the control of the controller 150, and the communication unit 190 stores data between the controller 150 and the information providing means 200 located remotely. As performing the communication, known wireless communication such as Bluetooth, short-range wireless communication, or wired communication such as RS-485 is used.

The information providing means 200 is located at a remote location and performs a function of remotely providing power reset or time information by communicating with a controller provided in each of a plurality of show cases, preferably a personal computer (PC). Implement with

As shown in FIG. 2, the information providing means 200 includes a communication unit 210 for performing data communication with the controller 150, and a communication state detection unit for detecting a communication state with the controller 150. 220, a controller 230 for providing necessary information to the controller 150 provided in the show case or transmitting a control command, a time information providing unit 250 for providing reference time information, and the communication state detection unit. And a communication state determination unit 260 for determining a communication state using the communication state detection information obtained at 220.

3 is a flowchart illustrating a control method of a show case according to the present invention, in which S represents a step.

As shown in the figure, performing communication connection with a controller provided in a plurality of show cases, and when communication is made, detecting and analyzing a communication state for each controller (S101 to S105); Generating a power reset information and providing power reset information to a controller in which a communication failure may occur, as a result of the analysis, and remotely resetting power of each controller (S107 to S111); After connecting to the controller having the power reset, the time information is requested, and the present time information is transmitted to the controller in real time (S113 ~ S117).

Here, as shown in FIG. 4, when the driving power is supplied, the controller initializes, draws out a basic operation program, and attempts to connect with the information providing means while controlling the operation of the show case (S201 to S209). Wow; Analyzing the received information in a communication connection with the information providing means and automatically resetting the power when the power reset command is executed (S211 to S215); Requesting time information by connecting to the information providing means when initialization is performed after the power reset, and receiving time information from the information providing means (S217 to S219); Compensating the time of the RTC with the received time information to perform synchronization with the information providing means (S221).

Referring to Figures 1 to 4 attached to the control method of the show case according to the invention made as described above in detail as follows.

First, when the power supply is made as in step S201, the controller 150 of the show case 100 performs initialization using the initialization program stored in the memory 140 in step S203, and the memory as in steps S205 and S207. The basic driving program is drawn out from 140 to control driving of the show case. Here, the driving control of the show case is made in the same manner as the driving method of the conventional show case, and thus a detailed description thereof will be omitted.

Next, in step S207, a connection is attempted with the information providing means 200 through the communication unit 190.

On the other hand, the control unit 230 of the information providing means 200 attempts to connect with the controller of each show case through the communication unit 210 as in step S101. Here, in the present invention, only the connection state with one show case 100 is shown for convenience, but the information providing means 200 is substantially connected to the plurality of show cases through communication.

When the connection with the show case is established, communication is performed as in step S103. In step S105, the communication state of the corresponding show case is detected through the communication state detection unit 220 and the communication state determination unit 260. The communication state is determined using the communication state information.

Here, the method for detecting and analyzing the communication state periodically attempts to establish a plurality of communication connections for each controller, and compares the number of attempted communication connection and the number of successful communication connections to determine the possibility of a communication failure, or to determine the communication connection time. Analysis will determine the possibility of communication failure. For example, if 10 communication connections are attempted at a predetermined time interval with one show case, and a response is detected normally, when 10 responses are detected normally, it is determined that the communication status is normal. If only one response occurs, it is determined that there is a possibility of communication failure.

Therefore, if there is a possibility of a communication failure through the communication state detection and analysis as described above in step S107, go to step S109 to generate power reset information, and use the generated power reset information as a show case in which there is a possibility of a communication failure. Will be sent.

When the information received from the information providing means 200 is a power reset command as in step S209, the controller 150 of the show case automatically moves to step S213 to automatically reset power through the power reset unit 180.

After that, the initialization is performed in step S215, and time information is requested to the information providing means (PC) 200 in step S217 for accurate operation control. This time information request is preferably performed through the communication unit 190.

If a connection is requested from the controller (show case) reset through the communication unit 210 in step S113, the control unit 230 of the information providing means 200 performs the connection and transmits the data transmitted from the reset controller in step S115. The analysis confirms whether the request is time information. Here, the time information is very important for synchronization between the main and server, or server (information providing means) and a terminal (show case) connected thereto in the synchronization system.

Next, in step S117, the information providing means 200 provides real-time time information (standard time) to the show case requesting time information. If the time information is received in step S219 in the controller of the show case, in step S221 The time of the RTC is corrected using the received standard time information. By such time correction, the synchronization of the information providing means 200 and the show case 100 is realized.

The present invention is not limited to the above-described specific preferred embodiments, and various modifications can be made by any person having ordinary skill in the art without departing from the gist of the present invention claimed in the claims. Of course, such changes will fall within the scope of the claims.

The present invention described above can automatically reset the power of the show case from a remote place, and can be applied to any control system in which a server and a plurality of terminals are connected to perform a communication as well as the show case.

1 is a block diagram showing the configuration of a system to which the present invention is applied.

2 is a detailed configuration diagram of the information providing means of FIG.

3 is a flowchart illustrating a control method of a show case according to the present invention;

Figure 4 is a flow chart illustrating a power reset and time correction process of the controller in the present invention.

<Description of the symbols for the main parts of the drawings>

100... Show case

110... Function input

120... Temperature sensor

130... RTC

140... Memory

150... controller

160... Freezing means

170... Defrost

180... Power reset section

190... Communication

200... Information provision means (PC)

Claims (6)

Performing communication connection with each controller provided in the plurality of show cases, and detecting and analyzing a communication state for each controller when communication is made; Generating power reset information and providing power reset information to a controller in which a communication failure may occur, as a result of the analysis; And And connecting the controllers of which the power reset is performed, and transmitting time information from the connected controller to the connected controller in real time when time information is requested from the connected controller. delete The method of claim 1, wherein the detecting and analyzing of the communication state comprises periodically attempting a plurality of communication connections for each controller, and determining a possibility of a communication failure by comparing information about the number of attempted communication connections and the number of successful communication connections. Or analyzing the communication connection time to determine a possibility that a communication failure occurs. The method of claim 1, wherein each controller, Initializing when the driving power is supplied, and attempting to connect with the information providing means while drawing a basic driving program to control driving of the show case; And performing an initialization after automatically resetting the power in response to a power reset command by analyzing the received information in a communication connection with the information providing means. The method of claim 4, wherein each controller further comprises the step of requesting time information by connecting to the information providing means when the initialization is performed after the power reset, and receiving the time information from the information providing means. The control method of the show case characterized in that. The method as claimed in claim 5, wherein each controller further comprises the step of correcting the time of the RTC with the received time information and synchronizing with the information providing means.

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