JP3901972B2 - Communication terminal device used for building equipment control device - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
TECHNICAL FIELD The present invention relates to a communication terminal device used in a building equipment, for example, a control device for controlling a refrigerator, and in particular, transmits the state of the building equipment to a network and applies to the building equipment via the network. The present invention relates to a communication terminal device that is used together with a control device that receives control commands and controls building equipment.
[0002]
[Prior art]
In general, building equipment (for example, a refrigerator) is controlled and monitored by a building equipment control device, and when the building equipment is controlled, the building equipment control device includes a state of the building equipment. And a setting value that defines the state of the building equipment is input and set, and the building equipment control apparatus controls the building equipment based on the setting value and the state of the building equipment.
[0003]
Further, the control state in the control device is sent separately to a central monitoring room or the like. There are various types of building facilities, and each building facility has a control device (for example, a refrigerator control device for a refrigerator, an elevator control device for an elevator, and a water supply facility for water supply) A control device is provided). Moreover, if it is attempted to monitor the control status of building equipment in a plurality of buildings, the number of building equipment becomes enormous. For this reason, in recent years, the state of each building equipment (that is, the control state in the control device) is monitored using a network. For example, a so-called local operating network (LON) is known as a network. Yes.
[0004]
When each building equipment is monitored using LON, a building equipment control device is generally connected to LON using a microcomputer chip called a neuron chip (this neuron chip has a communication protocol (LON TALK) ) Is stored.
[0005]
As described above, when a network such as LON is used, a large number of building facilities can be centrally managed in one place for a plurality of buildings.
[0006]
[Problems to be solved by the invention]
By the way, even in the same building equipment (for example, a refrigerator), the model is often different for each building. If the model is different, the control parameters handled by the building equipment control device and the building equipment The control information that represents the state quantity that represents the state is different, and when the building equipment control device is connected to a network such as LON, the control information is associated with the network variable according to the model and the network variable is associated with the model. It is necessary to correspond to the control information. That is, it is necessary to prepare a communication terminal device (a device equipped with a microcomputer chip such as a neuron chip) for each model even in the same building equipment.
[0007]
As described above, when the building equipment control device is connected to a network such as LON, a communication terminal device must be prepared according to the model, and a number of building equipment can be connected to the network for a plurality of buildings. In order to connect and centrally manage, a separate communication terminal device must be prepared for each model of building equipment. In other words, each time the model is different, it is necessary to prepare a communication terminal device in which control information and network variables are associated with each other, and it becomes extremely troublesome to connect the building equipment control device to the network. There is.
[0008]
An object of the present invention is to provide a communication terminal device that can easily connect a building equipment control device to a network regardless of the type of building equipment.
[0009]
[Means for Solving the Problems]
According to the present invention, when transmitting on the network receives control information on the corresponding building equipment control device for controlling the building equipment building before SL building equipment, correspondence to a predetermined network variable the control information In a building equipment management device consisting of a communication terminal device that sends
The building facility control device includes a process input / output device of a corresponding building facility, a first storage device having a control information storage area and a program storage area regarding the building facility,
On the other hand, the communication terminal device includes a model information storage area in which model information indicating the model name of the building facility is stored, and the control information and the network variable for each model name of the corresponding building facility. A second storage device comprising an associated network variable correspondence table; and the network corresponding to a model name corresponding to the model information obtained from the control device when connected to the control device. and a communication control means for searching the variable table as a search network variable correspondence table by referring to the search network variable correspondence table according to the model of the building equipment to associate with the network variables and the control information,
A communication terminal device for a building equipment control device is obtained, wherein the building equipment control device is configured to be connectable to a network via a communication control means of the communication terminal device.
[0010]
As described above, model information representing the model name of the building equipment is stored in the control device, and the communication terminal device includes a network variable correspondence table in which the control information and the network variable are associated with each model name of the building equipment. When the communication terminal device is connected to the control device, the communication terminal device obtains model information from the control device, searches the network variable table corresponding to the model name corresponding to the model information as a search network variable correspondence table, Since the control information and the network variables are associated with each other by referring to the variable correspondence table, the building equipment control device can be easily connected to the network even when the control information differs depending on the type of building equipment. be able to.
[0011]
The invention according to claim 1 is characterized in that, in addition to the gist, when the building equipment control device is connected to the network via the communication control means, the communication control means stores the search network in a second storage device . If there is no variable correspondence table, the communication control means obtains the network variable correspondence table stored in the second storage device as a sending network correspondence table, refers to the sending network variable table, and Control is performed to associate with a network variable.
[0012]
As described above, when the network variable correspondence table relating to the building facility controlled by the control device is stored in the control device, and the search network variable correspondence table does not exist, the communication terminal device is stored in the second storage device. The network variable correspondence table is obtained as the sending network correspondence table, and the control information and the network variable are associated with each other by referring to the sending network variable table. Even if the network variable correspondence table corresponding to the model does not exist in the communication terminal device, the building equipment control device can be easily connected to the network.
In addition to the gist of the present invention , the communication control means receives control data from the network when the building equipment control device is connected to the network via the communication control means. In this case, the network variable is controlled to be associated with the control data based on the search network variable correspondence table.
[0013]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, the present invention will be described in detail with reference to the embodiments shown in the drawings. However, unless otherwise specified, the dimensions, shapes, relative arrangements, and the like of the components described in this embodiment are merely illustrative examples and not intended to limit the scope of the present invention. In the following description, the building equipment will be described by taking a refrigerator as an example. However, the building equipment is not limited to a refrigerator, and includes, for example, an elevator equipment and a water supply equipment. The present invention can be applied.
[0014]
With reference to FIG. 1, the refrigerator 11 is controlled by a refrigerator control device 12. In the illustrated example, the refrigerator control device 12 includes a process input / output device 12a, a central processing unit 12b, a storage device 12c, and a communication interface 12d. The storage device 12c has a control information storage area 121 described later. A program storage area 122 is defined.
[0015]
The refrigerator control device 12 is connected to the refrigerator 11 by a process input / output device 12a. As will be described later, the state of the refrigerator 11 is input to the central processing device 12b by the process input / output device 12a and the central processing device. A control command is given to the refrigerator 11 from 12b. Furthermore, the refrigerator control device 12 is connected to a communication terminal device (herein referred to as a communication dedicated board) 13 by a communication interface 12d, and the refrigerator dedicated control apparatus 12 is connected to a network (for example, local operator) by the communication dedicated board 13. Network (LON) 14. In the following description, the network 14 is described as being LON.
[0016]
As illustrated, the communication dedicated board 13 includes a neuron chip 13a, a storage device 13b, and a communication interface 13c. In the storage device 13b, a model information storage area 131 is defined and at least one network variable correspondence is provided. A table 132 is defined. Then, the communication board 13 performs protocol conversion between the control information and the network variable as will be described later.
[0017]
Assuming that the refrigerator 11 is an absorption refrigerator, the process input / output device 12a indicates the state of the absorption refrigerator (device state information indicating the state of various devices constituting the refrigerator and the operation state of the refrigerator). Refrigerator status) is given from the absorption chiller, and the device status information and the chiller status are given from the process input / output device 12a to the central processing unit 12b (the process input / output device 12a receives input data from the absorption chiller) If it is an analog input, it is converted to digital, that is, A / D converted and provided to the central processing unit 12b). This equipment status information includes, for example, cooling water inlet temperature, cold / hot water outlet temperature, cold / hot water outlet temperature, high pressure regenerator solution temperature, exhaust gas temperature, high pressure regenerator pressure, etc. as analog inputs, and gas pressure as digital inputs. There are switches, pump motor overcurrent, cold / hot water pump interlock, cooling water pump interlock, etc.
[0018]
Further, the refrigerator status includes a status indicating that the cold water pump is operating, the cooling water pump is operating, the operating, the diluting operation, and the stopping.
[0019]
Various set values are set in the central processing unit 12b, and these set values include, for example, a cold water outlet temperature set value and a hot water outlet temperature set value. The central processing unit 12b gives various control commands based on these setting values, device state information, and refrigerator status. For example, the control commands include solution pump operation, refrigerant pump operation, extraction pump operation, cold / hot water pump start / stop command, cooling water pump start / stop command, and the like.
[0020]
The above-described device status information, refrigerator status, set value, control command, and operation command signal are stored in the control information storage area 121 as control information. Furthermore, the control information storage area 121 stores model information indicating the model of the refrigerator. Note that a control program or the like is stored in the program storage area 122, and the central processing unit 12b executes a control operation or the like based on the control program. Specifically, the control program includes analog control calculation, digital control calculation, communication processing, and the like.
[0021]
On the other hand, model information is stored in the model information storage area 131 defined in the storage device 13b of the dedicated communication board 13 as described later. The neckwork variable correspondence table 132 is a table that associates network variables exchanged on the LON with data exchanged between the refrigerator control device 12 and the communication dedicated board 13, and the table is defined for each model. Has been. For example, as shown in FIG. 2, each table stores a model name, a data type (control information), and an index number (network variable) corresponding to each data type. That is, the correspondence table between the data type and the network variable is stored in the neckwork variable correspondence table 132 for each model.
[0022]
Here, the case where the refrigerator control apparatus 12 mentioned above is connected to the network (LON) 14 using the board | substrate 13 only for communication is demonstrated. Referring to FIG. 3, now, when connected to the communication interface 12d of the refrigeration control device 12 and the communication interface 13c of the dedicated communication board 13, the neuron chip 13a is connected to the LON 14, and the power is turned on (step S1). The neuron chip 13a makes a model information request to the central processing unit 12b (step S2).
[0023]
In response to this model information request, the central processing unit 12b accesses the storage device 12c, reads model information indicating the model of the refrigerator from the control information storage area 121, and sends it to the neuron chip 13a as read model information. (Step S3). The neuron chip 13a stores the read model information as the model information to be written in the model information storage area 131 of the storage device 13b (step S4). As the writing model information, for example, a three-character ASCII character string is stored in the model information storage area 131, the gas-fired absorption refrigerator is “MGS”, the steam absorption refrigerator is “MDS”, and the turbo refrigerator is “TSR”. ".
[0024]
After storing the writing model information in the model information storage area 131 as described above, the neuron chip 13a searches the network variable correspondence table 132 using the writing model information as a key, and the model name corresponding to the writing model information is the neckwork. It is checked whether or not it exists in the variable correspondence table 132 (step S5). If there is a model name corresponding to the written model information, the neuron chip 13a uses a table in which the model name exists (hereinafter referred to as a corresponding table) as a correspondence table between control information and network variables (step S6). That is, the neuron chip 13a performs protocol conversion by associating the control information with the network variable with reference to the corresponding table.
[0025]
Thereafter, the neuron chip 13a makes a control information request to the central processing unit 12b at a predetermined cycle (every predetermined time) (step S7). In response to the control information request, the central processing unit 12b sends control information to the neuron chip 13a (step S8). Then, the neuron chip 13a checks whether or not there is control information whose value or state has changed in the period indicated by the above-mentioned predetermined cycle (step S9), and controls whose value or state has changed. If there is information, with respect to the control information, only the control information (whose value or state has changed) is set in the network variable with reference to the corresponding table (step S10). In this way, the neuron chip 13a sends the network variable to the LON 14.
[0026]
If there is no control information whose value or state has changed in step S9, the process returns to step S7, and the neuron chip 13a makes a control information request at a predetermined time.
[0027]
On the other hand, control information such as a command received via the LON 14 is given to the central processing unit 12b after the neuron chip 13a converts the protocol from the network variable to the control information (control command) with reference to the corresponding table. . The central processing unit 12a controls the refrigerator 11 based on this control command.
[0028]
In the above description, a correspondence table (network variable correspondence table) between data types and network variables for each model is stored in the neckwork variable correspondence table 132 in the communication dedicated board 13 in advance. It may be difficult to store a network variable correspondence table for. In other words, if there is no corresponding table in step S5, the neuron chip 13a cannot perform protocol conversion.
[0029]
For this reason, the network variable correspondence table of the refrigerator is stored in the storage device 12c of the refrigerator control device 12. If there is no corresponding table in step S5, the neuron chip 13a requests the central processing unit 12b to send a network conversion correspondence table (step S11). As a result, the central processing unit 12b reads the network variable correspondence table from the storage device 12c and sends it to the neuron chip 13a as a sending network variable correspondence table (step S12). The neuron chip 13a stores the sending network variable correspondence table in the storage device 13b (step S13). Thereafter, the neuron chip 13a executes Step S7.
[0030]
As described above, the neuron chip 13a performs steps S7 to S10 until the power is turned off. When the power is turned off, the neuron chip 13a stops processing. When the power is turned on again, since the model information has already been acquired, the neuron chip 13a executes steps S7 to S10 shown in FIG.
[0031]
In the example described above, an example in which at least one network variable correspondence table is stored in the storage device 13b has been described. However, the network variable correspondence table may not be stored in the storage device 13b in advance. In this case, when the communication dedicated board 13 is connected to the refrigerator control device 12, the network variable correspondence table is sent from the refrigerator control device 12 to the communication dedicated substrate 13 as described above.
[0032]
Further, the association between the network variable and the control information may be determined in advance for each model, and the central processing unit 12b may send the control information to the neuron chip 13a in association with the network variable according to the agreement. In this case, the control command received from the LON 14 is converted into a protocol according to the above-mentioned agreement and sent to the central processing unit 12b.
[0033]
【The invention's effect】
As described above, in the present invention, model information representing the model name of the building facility is stored in the control device, and the communication terminal device associates the control information with the network variable for each model name of the building facility. When the communication terminal apparatus is connected to the control apparatus, the communication terminal apparatus obtains model information from the control apparatus, and searches the network variable table corresponding to the model name corresponding to the model information as a search network variable correspondence table. By searching and referring to the search network variable correspondence table, the control information and the network variable are associated with each other. Therefore, even when the control information differs depending on the building equipment model, the building equipment control can be easily performed. There is an effect that the apparatus can be connected to the network.
[0034]
Furthermore, in the present invention, the network variable correspondence table related to the building equipment controlled by the control device is stored in the control device, and if the search network variable correspondence table does not exist, the communication terminal device is stored in the control device. Since the network variable correspondence table was obtained as the sending network correspondence table and the control information and the network variable were associated with reference to the sending network variable table, when the control information differs depending on the type of building equipment, Even if the network terminal correspondence table corresponding to the model does not exist in the communication terminal device, there is an effect that the building equipment control device can be easily connected to the network.
[Brief description of the drawings]
FIG. 1 is a block diagram showing an example of a communication terminal device according to the present invention together with a refrigerator and a refrigerator control device.
2 is a diagram showing an example of a network variable correspondence table used in the communication terminal device shown in FIG. 1. FIG.
FIG. 3 is a flowchart for explaining the operation of the communication terminal apparatus shown in FIG. 1;
[Explanation of symbols]
11 Refrigerator 12 Refrigerator Control Device 12a Process Input / Output Device 12b Central Processing Units 12c, 13b Storage Devices 12d, 13c Communication Interface 13 Communication Dedicated Board (Communication Terminal Device)
13a Neuron chip (communication control means)
14 Network (Local Operator Network (LON))
121 Control information storage area 122 Program storage area 131 Model information storage area 132 Network variable correspondence table

Claims (2)

Corresponding when sending on the network receives the control information about the building equipment building equipment control device and the front SL building equipment for controlling the building, the communication terminal apparatus for delivering in association with the predetermined network variable the control information In the building equipment management device consisting of
The building facility control device includes a process input / output device of a corresponding building facility, a first storage device having a control information storage area and a program storage area regarding the building facility,
On the other hand, the communication terminal device includes a model information storage area in which model information indicating the model name of the building facility is stored, and the control information and the network variable for each model name of the corresponding building facility. A second storage device comprising an associated network variable correspondence table; and the network corresponding to a model name corresponding to the model information obtained from the control device when connected to the control device. Communication control means for searching the variable table as a search network variable correspondence table and referring to the search network variable correspondence table according to the model of the building equipment to associate the control information with the network variable ;
The building facility control device is configured to be connectable to a network via a communication control means of the communication terminal device,
When the building equipment control device is connected to the network via the communication control means, wherein the communication control means is not present the search network variable correspondence table into the second storage device, said communication control means is the Obtaining the network variable correspondence table stored in the second storage device as a delivery network correspondence table and referring to the delivery network variable table to perform control so as to associate the control information with the network variable. A characteristic communication terminal device. Corresponding when sending on the network receives the control information about the building equipment building equipment control device and the front SL building equipment for controlling the building, the communication terminal apparatus for delivering in association with the predetermined network variable the control information In the building equipment management device consisting of
The building facility control device includes a process input / output device of a corresponding building facility, a first storage device having a control information storage area and a program storage area regarding the building facility,
On the other hand, the communication terminal device includes a model information storage area in which model information indicating the model name of the building facility is stored, and the control information and the network variable for each model name of the corresponding building facility. A second storage device comprising an associated network variable correspondence table; and the network corresponding to a model name corresponding to the model information obtained from the control device when connected to the control device. and a communication control means for searching the variable table as a search network variable correspondence table by referring to the search network variable correspondence table according to the model of the building equipment to associate with the network variables and the control information,
The building facility control device is configured to be connectable to a network via a communication control means of the communication terminal device,
When the building equipment control device is connected to a network via a communication control unit, the communication control unit receives the control data from the network and based on the search network variable correspondence table, the network variable and the A communication terminal device used for a building equipment control device, wherein control is performed so as to associate with control data.

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