JPH0861822A - Centralized control apparatus for showcase and the like - Google Patents

Abstract

PURPOSE: To provide a centralized control apparatus for showcases and the like, capable of reducing time required for data communication processing between a main controller and each of system controllers and connecting more terminal side controllers to the system controllers. CONSTITUTION: A microcomputer of a main controller 3 transmits only the specific data to system controllers 4 and requests the system controllers 4 to transmit necessary data. Microcomputers of the system controllers 4 transmit the data, which have been transmitted from the main controller 3, to terminal side controllers 6, collect data on operational conditions from the terminal side controllers 6 to store the collected data in RAMs, and organize only the necessary data selected from among the data stored in the RAMs to transmit them to the main controller 3 according to the request by the main controller 3, or voluntarily.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a centralized management system for showcases or the like for collectively centrally managing the operating states of a plurality of showcases.

[0002]

2. Description of the Related Art A plurality of showcases are installed in stores such as supermarkets and convenience stores.
Conventionally, each showcase is conventionally individually controlled by a control device including a temperature controller and a defrosting timer. Therefore, various setting operations relating to the showcase temperature, defrost control, and the like must be individually performed at the place where the showcase is installed. Therefore, the work becomes extremely complicated when the setting is changed depending on the season or the weather.

Further, in order to grasp the operating conditions such as various set values and the temperature of the showcase, it is necessary to go to the place where the showcase is installed and check them individually. There was a problem that could not be easily grasped. Therefore, in the present application, for example, as shown in Japanese Patent Application Laid-Open No. 5-264145 (F25D11 / 00), it is possible to connect a required number of system control devices to a main control device configured by a microcomputer, and to connect each system control device to each system control device. Builds a centralized management device by enabling the connection of a required number of terminal side control devices provided in a showcase, etc., and collects data related to showcase operation control input by the main control device. Operation of multiple showcases is performed by supplying data to each terminal side control device via the system control device and collecting data on the operating conditions of the showcases from each terminal side control device via the system control device. We proposed a system for centralized management.

According to such a system, it becomes possible to collectively control the operation of a plurality of showcases.
The setting and management work is significantly simplified, and the system can be flexibly expanded according to the size of the store, that is, the number of showcases installed. by the way,
Conventionally, data transmission / reception has been performed between the main control device and the system control device, for example, once a minute using the protocol shown in FIG. That is, each terminal side control device has, for example, channel numbers 01 to 30. Is set, and the main controller first transmits the set value of channel 01 (data relating to the operation control of the showcase) and the data request command to the system controller. The data format in this case is shown in FIG. 12, and the data has a channel number. (01 in this case), data request, set temperature 1, 2 ... Other various setting items were included.

On the other hand, the system control device collects data (hereinafter referred to as channel data) relating to the operating state of the terminal side control device connected to itself, and stores the data in the format shown in FIG. Is the channel number. In addition to the above, various data such as the temperature inside the refrigerator and the contents of the alarm are included. Then, in response to the data request from the main controller, the conventional system controller transmits the data of channel 01 in the format of FIG. 13 to the main controller, and when the main controller completes the reception of the data of channel 01, A communication normal end command is transmitted to the system control device. Then, the data is transmitted to the terminal side control devices of all showcases by collecting and transmitting the channels 01 to 30, or the data is collected from the terminal side control devices of all showcases to the main control device.

[0006]

As described above, in the prior art, the data as shown in FIG. 12 is transmitted from the main control device to the system control device at regular intervals (once per minute), and in response, the system control device receives the data. The channel data as shown in FIG. 13 was directly transmitted to the main controller. However, FIG.
The amount of data in the format shown in FIG. 13 and FIG. 13 is large in quantity, and particularly when the number of installed showcases is large, it takes a long time for data communication between the main controller and the system controller,
There is a problem that interferes with other general control processing.

On the other hand, it is not necessary to constantly transmit the set temperature and the like, and it is sufficient if the main control unit transmits it to the system control unit when it is changed. Further, the content of the alarm will not be a problem if it is transmitted from the system controller to the main controller only when the alarm is issued. Therefore, in view of the conventional situation as described above, the present invention shortens the time required for the data communication processing between the main control unit and the system control unit, and enables more terminal side control units to be connected. The purpose is to provide a centralized management device such as a showcase.

[0008]

That is, the centralized control device of the present invention collectively manages the operating states of a plurality of showcases and the like, and comprises a main control device and a plurality of main control devices. A system control device that is connectable, and a terminal-side control device that is provided in each of a plurality of showcases and is connectable to a plurality of system control devices, and are configured.
The main control unit includes an input unit for inputting data relating to operation control of a showcase, a transmitting / receiving unit for transmitting / receiving data to / from the system control unit, and a control unit. The system control unit is a main control unit and a terminal side. The terminal-side control device includes a transmission / reception unit that transmits / receives data to / from the control device, a storage unit, and a control unit. , And a control means for transmitting data regarding the operating state of the showcase to the system control device, and the control means of the main control device transmits only the specific data input by the input means to the system control device. , The system control device is requested to transmit necessary data, and the control means of the system control device transmits the data transmitted from the main control device to the terminal side control device, The main control unit collects data on the operating state from the side control unit and stores it in the storage unit, and also organizes only necessary data from the data stored in the storage unit at the request of the main control unit or voluntarily. Is to be sent to.

[0009]

According to the centralized control device for a showcase or the like of the present invention, the control means of the main control device sends only specific data to the system control device and instructs the system control device to send necessary data. In response to a request from the main control device, or voluntarily, the control means of the system control device organizes only the necessary data from the data regarding the operating state from the terminal side control device stored in the storage means, Since the data is transmitted to the main control unit, unnecessary data communication between the main control unit and the system control unit can be eliminated, and only necessary data can be communicated.

As a result, the amount of data to be communicated is reduced, the communication processing time is significantly shortened, the adverse effect on other processing can be eliminated, and more terminal side control devices can be connected. It will be possible.

[0011]

Embodiments of the present invention will now be described in detail with reference to the drawings. FIG. 1 is a system configuration diagram of an embodiment of a centralized management device 1 of the present invention. The system of the centralized management device 1 of the embodiment is
A central control unit 2 composed of a personal computer, and a main control unit 3 composed of a microcomputer,
It is constructed from the system control device 4 and the terminal side control device 6.

The central control unit 2 is provided in a security room of a store, and as shown in FIG. 2, a microcomputer 7, a hard disk 8 and a ROM 9, a RAM 11, a floppy disk drive 12 connected to the microcomputer 7, and transmission / reception. It comprises means 13, output control means 14 and input control means 16. The transmitting / receiving means 13 is composed of a serial interface, and is connected to the main controller 3 described above via a communication line 17 such as RS-232C. In the hard disk 8, in addition to the control program of the central management unit 2 itself, various data regarding the operating state of the showcase S and the like sent from the main control unit 3 and data regarding the installation form (case layout) of the showcase S and the like, Furthermore, data regarding various operating conditions, communication protocols, etc. are stored. A printer 18 and a display 19 are connected to the output control means 14, and a keyboard 21 and a mouse 2 as input means are connected to the input control means 16.
2 are connected. Further, a modem 23 is connected to the microcomputer 7 so that it can communicate with the outside through a telephone line.

Next, the main controller 3 is also provided in the security room or the like, and as shown in FIG. 3, a microcomputer 24 as a control means, a ROM 26, a RAM 27, an EEPROM 40 connected to the microcomputer 24, and a transmitting / receiving means. 28, 29, output control means 31, and input control means 32. The transmitting / receiving means 28, 29 are configured by a serial interface, and the transmitting / receiving means 28
Is connected to the central management device 2 via the communication line 17, and the transmitting / receiving means 29 is connected to the system control device 4 described above via the communication line 33. The transmission / reception unit 29 has five connection ports, which allows connection of a maximum of five system control devices 4. Further, the ROM 26 stores a communication protocol and a control program of the main control device 3 itself, and the RAM 27 stores various data regarding the operating state of the showcase S and the like sent from the system control device 4 and various data sent to the system control device 4. Data, control data of the main control device 3 itself (display data of the liquid crystal display unit 34, etc.) are stored, and data relating to various settings and installation states of the showcase S and the like are stored in the EEPROM 40, and when power is cut off. Is also retained.

The output control means 31 is connected to a liquid crystal display section 34 having a display capacity of 16 characters × 2 lines, an external alarm output 99 consisting of relay contact outputs, and a buzzer 36. The input control means 32 serves as an input means. A key switch 37, a dip switch 38, and a slide switch 39 are connected. The key switch 37 is a switch for performing various settings and display commands described later, and the dip switch 38 is a switch for setting the connection state of the system control device 4. The slide switch 39 is a switch for performing lighting control of the showcase S and the like and setting related to night stop.

Next, the system controller 4 is, as shown in FIG.
It is composed of a microcomputer 41 as a control means, a ROM 42 connected to the microcomputer 41, a RAM 43 and an EEPROM 45 as a storage means, transmission / reception means 44, 46, an output control means 47 and an input control means 48. The transmitting / receiving means 44, 46 are configured by a serial interface, and the transmitting / receiving means 44 is connected to the main controller 3 via the communication line 33.
The transmitting / receiving means 46 includes the above-mentioned terminal side control device 6 and the communication line 49.
Connected through. The transmission / reception means 46 has 30 connection ports, and a maximum of 30 terminal side control devices 6
Is configured to be connectable, so that the central control device 1 is configured to be able to connect up to 150 terminal side control devices 6, that is, the showcase S and the like.

The ROM 42 stores a communication protocol and a control program for the system control device 4 itself, and a RAM.
Reference numeral 43 denotes various data (hereinafter referred to as channel data) relating to operating states of the showcase S and the like sent from the terminal side control device 6, and various operating conditions of the showcase S and the like sent from the main control device 3. Data is stored. Further, the EEPROM 45 stores setting data of various operating conditions of the showcase S and the like sent from the main control device 3 and is retained even when the power is cut off.

The output control means 47 has an LE for displaying an alarm.
The D display section 51 is connected to the input control means 48, and the input / output means 48 uses / unuses the channels allocated for controlling the showcase S and the like, and its own channel numbers A to E. L to set or display an alarm
A dip switch 52 for switching the ED display section 51 to an operation monitor is connected.

Next, the terminal side control device 6 is provided in each of the showcase S and the refrigerator R of FIG. 1, and as shown in FIG. 5, a microcomputer 54 as a control means.
And a ROM connected to this microcomputer 54
56, RAM 57, EEPROM 50, and transmitting / receiving means 5
8, output control means 59 and input control means 61.

The transmitting / receiving means 58 is composed of a serial interface, and is connected to the system controller 4 by the communication line 4.
It is connected through 9. Further, the ROM 56 stores a communication protocol and a control program for the terminal side control device 6 itself, and the RAM 57 stores data regarding various operating conditions such as the showcase S sent from the system control device 4. Further, the EEPROM 50 stores setting data of various operating conditions such as the showcase S set by the terminal side control device 6 and is retained even when the power is turned off.

The output control means 59 is connected to a display means 62 for displaying an alarm and an actuator (apparatus) 63. In the case of the showcase S, this actuator 63 is an expansion valve, a heater for defrosting, lighting, etc.
If so, it means a compressor motor or the like.
To the input control means 61, a setting switch 64 and a sensor 66 for detecting the temperature inside the showcase S, the condensation pressure of the refrigerator R, etc. are connected. The data detected by the sensor 66 is also stored in the RAM 57. The setting switch 64 is assigned channel numbers 1 to 30 for controlling the terminal side control device 6. Is for setting. In addition, the microcomputer 54
Holds a sensor ID as individual identification information set for each model of each showcase S and refrigerator R.

The showcase S and the refrigerator R are installed in a predetermined number and in a predetermined installation form, that is, a case layout according to the size of a store such as a supermarket or a convenience store.
The necessary number of units are connected to the main controller 3 in accordance with the number of units installed. That is, when a total of 91 to 150 showcases S and refrigerators R are installed in a large-scale store, 4
One to five system control devices 4 are connected. Further, in the case where 31 or more and 90 or less showcases S or refrigerators R in total are installed in a medium-scale store, two or three system control devices 4 are connected. Further, when a total of 30 showcases S or refrigerators R are installed in a small-scale store, one system control device 4 is connected.

In this way, the main control unit 3 and the system control unit 4 are separated, and one system control unit 4 is connected to the terminal side control unit 6 such as 30 showcases S. As a result, the number of connecting ports of the transmitting / receiving means 29 of the main control device 3 is reduced, and even in the case of a small-scale store, four unused ports are produced at worst, so that structural waste is reduced and cost is reduced. It is possible to flexibly respond to the scale of the store.

When the showcase S or the like is installed, each terminal side control device 6 is set by setting switches 64 to 1 to 30.
The channel of each terminal-side control device 6 is set by setting one of A to E in the system control device 4 to which the terminal-side control device 6 is connected. No. (For example, A01) is assigned and set.
If the number of showcases S or the like connected to the system control device 4 is less than 30, if the unused channel numbers (1 to 30) are set by the DIP switch 52, the unused channel numbers are set. Will be transmitted to the main controller 3 and will be ignored in the subsequent control.

The operation of each device having the above configuration will be described. In the central management device 2, according to the menu displayed on the display 19, a case layout which is an installation form of the showcase is created and input. Central management device 2
The hard disk 8 of the computer stores programs and data relating to case layout creation, and the mouse 22
By operating the etc., the showcase S in the store
It is possible to create a case layout on the display 19 according to an actual installation form such as.

Further, the window function allows the model name of the showcase S, the type of product such as fresh fish, and the channel N to be displayed.
o. The sensor ID can also be set. Data regarding the case layout created by such a case layout creation function is stored in the microcomputer 7
Is stored in the hard disk 8 and saved.

Further, the microcomputer 7 of the central control unit 2 displays various setting menus concerning the various settings of the main control unit 3 and the operating conditions of the terminal side control unit 6 on the display 19, and also displays the terminal control setting screen on the display 19. To display. In this terminal control setting screen,
The channel number assigned to each terminal side control device 6 by the keyboard 21 or the mouse 22. For each (for example, A01), it is possible to set operating conditions such as the set temperature in the refrigerator, various alarms, various set values for defrosting, control temperature, and the showcase S. The data relating to the operating conditions can be stored in the hard disk 8 by the microcomputer 7 and can also be transmitted to the main controller 3 by the transmitting / receiving means 13 by using the download function by operating the keyboard 21.

Next, the main controller 3 will be described. In the main controller 3, the key switch 37, the DIP switch 38, and the slide switch 39 are used to, like the central controller 2, the channel number assigned to each terminal-side controller 6 is assigned. For each (for example, A01), it is possible to set operating conditions such as the set temperature in the refrigerator, various alarms, various set values for defrosting, control temperature, and the showcase S. The data relating to the operating conditions of the showcase S and the like set by the main control unit 3 is stored in the RAM 27 and the EEPROM 40 by the microcomputer 24 and transmitted from the transmitting / receiving means 29 to the system control unit 4 as described above. When the data relating to the operating conditions is downloaded from the central control unit 2, the microcomputer 24 rewrites the contents of the RAM 27 and the EEPROM 40 into the downloaded data and transmits it to the system control unit 4.

Here, when the above-mentioned various setting items are changed, the microcomputer 24 of the main control unit 3 is operated as shown in FIG.
Data is transmitted / received to / from the system control device 4 by the protocol shown in FIG. That is, for example, when the set temperature in the refrigerator is changed, the microcomputer 24 of the main control device 3 transmits only the data of the changed set temperature in the chamber, which is the setting change content, to the system controller 4. The microcomputer 41 of the system control device 4 receives this and sends a setting reception confirmation command to the main control device 3. Then, the main controller 3 receives this and sends a communication end command to the system controller 4
Send to.

Similarly, for the other setting items, the main control unit 3 transmits only the data of the change contents to the system control unit 4. Therefore, the amount of data to be transmitted is remarkably reduced, and the communication processing time required for changing the setting is remarkably shortened. These data are the same as the channel No. The transmission is performed separately for each. Further, in response to a request from the central management device 2, the microcomputer 24 of the main control device 3
The data set by the key switch 37 or the like is uploaded to the central management unit 2 by the transmitting / receiving means 28. The central management device 2 can compare the data uploaded from the main control device 3 with the data set by the central management device 2.

Next, the system controller 4 transmits / receives data to / from the main controller 3 by the transmitting / receiving means 44. (AE)
Upon receiving the data regarding the operating conditions of the showcase S and the like (including the data at the time of the change), the microcomputer 41 temporarily stores (updates) the data in the RAM 43, and further, the transmission / reception means 46 causes the terminal side control device. The data regarding the operating condition is transmitted to the No. 6.

On the other hand, in the terminal side control device 6, the transmitting / receiving means 5
8 is his channel number. (01 to 30) Upon receiving the data regarding the target operating condition, the microcomputer 54 stores the data in the RAM 57. The microcomputer 54 is a showcase S from the sensor 66.
The output related to the in-compartment temperature and the in-reservoir set temperature in the data related to the operating conditions are compared to control the expansion valve or the compressor motor as the actuator 63, and the in-compartment temperature is controlled to the above-mentioned in-reservoir set temperature. Further, the heater as the actuator 63 is controlled based on the data regarding defrosting, and the defrosting control of the showcase S is executed, and
The actuator 63 based on the data regarding the lighting control
Control the lighting of the lighting.

Channel data such as the inside temperature of the showcase S and the like (data relating to the operating state)
Are sequentially stored and updated in the RAM 57 by the microcomputer 54. The format is the content shown in 12 above. Further, for example, the internal temperature of the refrigerator rises abnormally due to a failure of the expansion valve, etc.
When the set value for the alarm out of the data sent from the microcomputer exceeds the set value, the microcomputer 54 displays the alarm on the showcase S or the like by the display means 62, and
Information about the alarm (alarm content) is also included in the channel data and stored in the RAM 57.

Microcomputer 4 of system controller 4
1 is, for example, a maximum of 3 connected to itself once a minute
Polling is performed on the microcomputers 54 of the zero terminal side control devices 6. When the microcomputer 54 of the terminal-side control device 6 is polled by the system control device 4, the microcomputer 54 of its own channel number. The channel data in the format shown in FIG. 13 stored in the RAM 57 together with the sensor ID are transmitted from the transmitting / receiving means 58 to the system controller 4.

The system controller 4 receives and collects the channel data by the transmitting / receiving means 46, and outputs the data (the format of FIG. 13) relating to the operation state of up to 30 units for each terminal side controller 6, that is, for each channel. RAM43
Save in. The channel data in the RAM 43 is updated when data is transmitted from the terminal side control device 6 by the next polling. If the alarm content of the data transmitted from the terminal-side control device 6 contains alarm information, the microcomputer 41
Causes the LED display unit 51 to be turned on and displayed externally.

On the other hand, the microcomputer 24 of the main control unit 3 also sends to the system control unit 4 once a minute in accordance with the time when the system control unit 4 completes the data collection from each terminal side control unit 6. Poll. The protocol in this case is shown in FIG. That is, the microcomputer 24 of the main controller 3 first sends a temperature data request command to the system controller 4. Upon receipt of this temperature data request, the microcomputer 41 of the system control device 4 receives a plurality of units (for example, channel No. A) connected to itself.
01 to A30), only the temperature data (internal temperature) is extracted from the channel data (A01 to A30 in the format of FIG. 13) collected from the terminal side control device 6,
The temperature data in the format shown in FIG. 9 is organized.

Then, the microcomputer 41 of the system controller 4 organizes the temperature data of FIG. 9 (channel A).
01 to A30) is transmitted to the main controller 3 by the transmitting / receiving means 44. When the main controller 3 receives the temperature data by the transmitter / receiver 29, it transmits a communication end command to the system controller 4 from the transmitter / receiver 29. As described above, at the time of periodic polling, only temperature data is transmitted between the main control device 3 and the system control device 4, and unnecessary setting values and the like are not communicated (setting values are as described above. This is done only at the time of change), so the amount of data transmitted will be significantly smaller than in the past. Therefore, the communication processing time is significantly shortened, the adverse effect on other processing can be eliminated, and more terminal side control devices 6 can be connected.

The main controller 3 collects the temperature data in this manner and stores in the RAM 27 data for each terminal-side controller 6, that is, for each channel, a maximum of 150 units. Similarly, the data in the RAM 27 is updated by the temperature data transmitted from the system controller 4 in the next polling. Next, in the case where the channel data collected from the terminal side control device 6 includes the information (alarm content) related to the alarm, the system control device 4 operates as shown in FIG.
A command indicating that an alarm is issued is transmitted to the main control device 3 by the transmitting / receiving means 44 as in the protocol shown in FIG. When the main controller 3 receives this, the blower 29 transmits a command for requesting an alarm data to the system controller 4.

On the other hand, when the microcomputer 41 of the system control device 4 receives this alarm data request, a plurality of units (for example, channel No. A01 ...
Only alarm data (alarm content) is extracted from the channel data (A01 to A30 in the format of FIG. 13) collected from the terminal side control device 6 of A30).
The alarm data in the format shown in 0 is organized.

Then, the microcomputer 41 of the system controller 4 sends the organized alarm data (channels A01 to A30) of FIG.
Send to. When the main controller 3 receives the alarm data by the transmitter / receiver 29, it transmits a communication end command to the system controller 4 from the transmitter / receiver 29. As described above, during periodic polling, data transmission regarding the alarm is not performed between the main control device 3 and the system control device 4, and the system control device 4 calls the main control device 3 only when the alarm is issued. Since only the alarm data is transmitted, the amount of data transmitted as a whole is significantly reduced.

Microcomputer 24 of main controller 3
When the alarm data is received, that effect and the channel number of the showcase S or the like from which the alarm is generated are displayed. The alarm content is displayed on the liquid crystal display 34 and the buzzer 36
To operate. On the other hand, the microcomputer 7 of the central control device 2 also polls the main control device 3 once a minute in accordance with the time when the main control device 3 completes the collection of data from each system control device 4. When the microcomputer 24 of the main control unit 3 is polled by the central management unit 2, a maximum of 150 stored in the RAM 27 is stored.
The central management unit 2 receives the channel data (data relating to the operating state) of the showcases S etc.
Send to.

The central control unit 2 receives the channel data by the transmitting / receiving means 13 and stores the channel data for each terminal-side control unit 6, that is, for each channel at the maximum of 150 units in the hard disk 8 to collect the data. I do. Then, by operating the keyboard 21 or the like, the internal temperature of the showcase S or the like and the alarm are displayed on the display 19.

In the embodiment, the main control device 3 and the system control device 4 always transmit and receive data according to the protocols of FIGS. 6 to 8. However, the present invention is not limited to this, and normally, the system control device 4 and the terminal. Data may be transmitted / received between the side control devices 6, and when the number of connected terminal side control devices 6 exceeds a certain number, the transmission / reception may be switched to that shown in FIGS. 6 to 8.

[0043]

As described above in detail, according to the present invention, the control means of the main control device sends only specific data to the system control device, and also sends the necessary data to the system control device. At the same time as the request, the control means of the system control device organizes only the necessary data from the data relating to the operating state from the terminal side control device stored in the storage means, either by request from the main control device or spontaneously. Since the data is transmitted to the control device, unnecessary data communication between the main control device and the system control device can be eliminated, and only necessary data can be communicated.

Therefore, since the amount of data to be communicated is reduced, the communication processing time is remarkably shortened, the adverse effect on other processing can be eliminated, and more terminal side control devices can be connected. It will be.

[Brief description of drawings]

FIG. 1 is a system configuration diagram of a centralized management device such as a showcase according to the present invention.

FIG. 2 is a block diagram of an electric circuit of the central management unit.

FIG. 3 is a block diagram of an electric circuit of a main controller.

FIG. 4 is a block diagram of an electric circuit of the system control device.

FIG. 5 is a block diagram of an electric circuit of the terminal-side control device.

FIG. 6 is a diagram illustrating a communication protocol between a main control device and a system control device when a setting is changed.

FIG. 7 is a diagram illustrating a communication protocol between a main controller and a system controller when requesting temperature data.

FIG. 8 is a diagram illustrating a communication protocol between a main control device and a system control device when an alarm is issued.

FIG. 9 is a diagram showing a format of temperature data.

FIG. 10 is a diagram showing a format of alarm data.

FIG. 11 is a diagram illustrating a communication protocol between a conventional main controller and a system controller.

FIG. 12 is a diagram showing a format of a conventional set value and a data request command.

FIG. 13 is a diagram showing a format of channel data.

[Explanation of symbols]

 1 Central control device 2 Central control device 3 Main control device 4 System control device 6 Terminal side control device 24 Microcomputer 29 Transmitting / receiving means 37 Key switch 28 Dip switch 41 Microcomputer 44, 46 Transmitting / receiving means 66 Sensor S Showcase R Refrigerator

Claims (1)

[Claims] 1. A centralized control device for collectively controlling the operating states of a plurality of showcases and the like, wherein the centralized control device comprises a main control device and a system control device connectable to a plurality of main control devices. , The plurality of showcases and the like, each of which is provided with a terminal-side control device that is connectable to the system control device, and the main control device includes data relating to operation control of the showcase or the like. And input / output means for inputting / outputting data, transmission / reception means for transmitting / receiving data to / from the system control device, and control means, wherein the system control device transmits / receives data to / from the main control device and the terminal side control device. A transmission / reception unit, a storage unit, and a control unit, wherein the terminal-side control device transmits / receives data to / from the system control device;
The control means for controlling the equipment and transmitting data relating to the operating state of a showcase to the system control device is provided, and the control means for the main control device has a specific input from the input means. Only the data is transmitted to the system control device, and the system control device is requested to transmit necessary data, and the control means of the system control device transmits the data transmitted from the main control device to the terminal. It is transmitted from the data stored in the storage means at the request of the main control device or voluntarily stored in the storage means while being transmitted to the side control device, collecting the data on the operation state from the terminal side control device and storing the data in the storage means. A centralized management device for showcases, etc., characterized by organizing only unique data and transmitting it to the main control device.