JP2007080115A - Data transmission system - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To speedily transmit measurement data to a terminal control section necessary for control in the case of fire/power failure without damaging ordinary data transmission performance of a centralized monitoring apparatus. <P>SOLUTION: When a state change (from OFF to ON) from a point stored in a fire determination point storage part of a main control section 1 is transmitted from a terminal device 6 to the main control section 1 of a centralized monitoring device, the mode switching means of the main control section 1 transmits a fire mode switching notice to an arithmetic unit 3. The arithmetic unit which receives the notice, selects a fire reference designation table using a built-in reference designation table selecting means, and transmits only measurement data designated that reference is present to a terminal control section 4 by the table, as regards acquired measuring point information. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a data transmission system, in particular, a terminal device such as a power facility, a lighting facility, and an air-conditioning / ventilation facility installed in a building or factory via a dataway based on a measurement value measured by a measurement sensor. The present invention relates to a data transmission system in a centralized control device that centrally controls terminal devices.

  Conventionally, this type of data transmission system checks (polling) the presence / absence of transmission data cyclically from the master unit to the terminal one by one, and delays control due to the time interval from one poll to the next polling. The disadvantage that a user unfamiliar with the centralized control system feels dissatisfied is solved (for example, see Patent Document 1).

  More specifically, the master unit sends address data for selecting a predetermined terminal unit and a signal including control data of the called terminal unit, and cyclically transmits this signal for each address one after another. To send repeatedly. Each terminal device determines whether or not it is a self-call from the content of the address data in the received data, and when it is determined that it is a self-call, it controls on / off of the controlled load by the control data. In addition, the wall switch provided with the operation switch corresponding to the terminal device also detects its own call from the address data when it receives data from the master unit, and transmits the operation state of the operation switch. The master device that has received the command sends data including control data to the corresponding terminal device every time each switch operation is performed.

  In the normal cycle, the master unit sequentially accesses the normal address storage unit storing the addresses of all currently connected terminals and polls all the terminals equally. The priority terminal table storing the addresses of the terminals to be polled more frequently than the terminals is sequentially accessed, and only the terminals having this address are polled.

  The selection data storage unit stores data for selecting whether the next cycle is a normal cycle or a priority cycle. For example, the following cycles are repeated such that nine priority cycles and one normal cycle are alternately repeated. A cycle is selected. The reception data storage unit stores the number of receptions from each terminal within a certain period, and among these, the one with the high reception frequency is selected and registered in the priority table. Also, if you want to increase the priority even if the usage frequency is low due to the load or the type of detector, forcibly register it in the priority terminal table by key entry so that it will not be deleted from the priority terminal table even if the reception frequency is low Keep it protected.

  In the event of a power outage, it will be a self-running operation, so a terminal table at the time of a power outage that stores only the address of the terminal required at the time of the power outage is provided, and the thinning operation is performed in the same way as the priority terminal table Yes.

Japanese Patent Laid-Open No. 56-139043 (first page, FIG. 4)

  However, in the above-described prior art, since the combination of the priority cycle and the normal cycle is determined in advance, the priority cycle is frequently repeated, for example, even in the normal case where there is no fire or power failure, and only the normal cycle is set. Since the frequency of data transmission to the terminal device is reduced, there is a first problem that the control operation triggered by the device is delayed.

  In addition, if the frequency of receiving addresses (normal addresses) in the normal cycle exceeds the upper limit setting value, a priority registration request is issued and the address is automatically added to the priority cycle by the program. There is also a second problem in that even the address of the terminal device that frequently transmits changes is added to the priority cycle, causing an increase in the amount of traffic on the data transmission path.

  Accordingly, an object of the present invention is to quickly transmit measurement data to each terminal control unit particularly required for control in the event of a fire / power failure without impairing normal data transmission performance, and a terminal due to information transmission time delay It is an object of the present invention to provide a data transmission system that minimizes control delay of a control unit.

  The data transmission system of the present invention is a data transmission system in a centralized control device that centrally controls a terminal device with measurement data based on measurement values of measurement points measured by a measurement sensor. Judgment point storage unit that stores observation points for observation, and a reference designation table that stores the presence / absence of reference to measurement data including measurement values at each measurement point for each state around the terminal device installation or part And the transmission control table storing the transmission destination of each measurement data, and if there is a notification of an abnormal state from the terminal device, check whether the observation point matches the observation point stored in the judgment point storage unit A mode switching means for switching a mode corresponding to the above state according to the result, and a reference indication for selecting one of the reference designation tables depending on the mode. It includes a table selecting unit, and transmits the transmission control table measurement data available reference in the reference designation table selected.

  More specifically, the data transmission system of the present invention centrally controls the terminal devices (6-1, 6-2, 6-3 in FIG. 1) based on measurement data based on the measurement values of the measurement points measured by the measurement sensor. In a data transmission system in a centralized control device, a fire judgment point storage unit (11 in FIG. 2) that stores observation points for observing a fire around a terminal device installation or a part, and a terminal device installation periphery or part Data that includes the measured values at each measurement point when the terminal installation area or part is in a normal state. Reference designation table (31 in FIG. 5) that stores the presence or absence of reference to and whether or not reference is made to measurement data including measured values at each measurement point when a fire has occurred around the terminal device or in the area The stored fire reference designation table (32 in FIG. 5) and the presence / absence of reference to the measurement data including the measurement values at each measurement point when a power failure occurs around the installation or part of the terminal device When a power failure reference designation table (33 in FIG. 5), a transmission control table (21 in FIG. 3) storing the transmission destination of each measurement data, and a notification of fire or power failure from the terminal device, the observation point Is the same as the observation point stored in the fire judgment point storage unit or the power failure judgment point storage unit, and mode switching means (15 in FIG. 2) for switching the fire mode or power failure mode according to the result, fire mode or Reference designation table selection means (36 in FIG. 5) is provided for selecting either the fire reference designation table or the power failure reference designation table in accordance with the power failure mode. And transmitting the measurement data there referred to by the transmission control table in Bull.

  Another data transmission system of the present invention is a data transmission system in a centralized control device that performs centralized control of a data terminal device based on measurement data based on measurement values of measurement points measured by a measurement sensor. A daytime judgment point storage unit (41 in FIG. 7) that stores observation points in the vicinity or part of a terminal device that operates according to a schedule that turns off at daytime end time, and turns on at night start time and turns off at night end time Night judgment point storage unit (42 in FIG. 7) that stores observation points around the installation or part of the terminal device that operates according to the schedule, and the presence or absence of reference to the measurement data including the measurement values of each measurement point in the daytime The daytime reference designation table (51 in FIG. 8) and the presence / absence of reference to the measurement data including the measurement value of each measurement point at night Night reference designation table (52 in FIG. 8), a normal reference designation table (53 in FIG. 8) that stores the presence / absence of reference to measurement data including measurement values at each measurement point in the day and night, and each measurement data When there is a transmission control table (21 in FIG. 3) storing the transmission destination and a notification of daytime start or nighttime start from the terminal device, the observation point is stored in the daytime determination point storage unit or nighttime determination point storage unit. Mode switching means (45 in FIG. 7) for switching between daytime mode and nighttime mode according to the result, and either daytime reference designation table or nighttime reference designation table depending on daytime mode or nighttime mode. Reference designation table selection means (55 in FIG. 8) for selecting the measurement data with reference in the selected reference designation table as a transmission control table And transmitting Ri.

  The first effect of the present invention is to quickly transmit measurement data to each terminal control unit particularly required for control in the event of an emergency such as a fire or power outage without impairing normal data transmission performance, thereby transmitting information. This is to minimize the control delay of the terminal control unit due to the time delay. The reason is that in an emergency, the measurement data to be transmitted to the data transmission path can be limited to the measurement data having priority.

  The second effect is that the measurement data flowing in the data transmission path can be prevented from being restricted in the normal mode. The reason is that measurement data transmission control by mode switching is executed only after the main control unit receives a change from the trigger point for determining emergency.

  Furthermore, the third effect is that the schedule control load of the main control unit is reduced. The reason is that the main control unit only controls a one-point schedule operation as a trigger, and the terminal device that operates based on the measurement data is schedule-controlled as a result of transmission / non-transmission of measurement data by mode switching. Because it will be.

  The data transmission system of the present invention relates to a data transmission system in a centralized control device that centrally controls a terminal device with measurement data based on measurement values of measurement points measured by a measurement sensor. For this purpose, a judgment point storage unit that stores observation points for observing abnormal conditions in the vicinity of the terminal device or the site, and whether or not there is a reference to measurement data including measurement values at each measurement point A reference designation table stored for each state of the periphery or part and a transmission control table storing the transmission destination of each measurement data are provided.

  Then, when there is a notification of an abnormal state from the terminal device, a mode switching unit that checks whether the observation point matches the observation point stored in the determination point storage unit, and switches the mode corresponding to the state based on the result. The reference designation table selecting means for selecting one of the reference designation tables according to the mode is provided, and the measurement data with reference in the selected reference designation table is transmitted by the transmission control table. Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

[Description of configuration]
FIG. 1 is a block diagram showing an embodiment of a data transmission system of the present invention. As a general function, this data transmission system controls the terminal devices 6-1, 6-2, 6-3 by the control data from the main control unit 1, and the terminal devices 6-1, 6-2, The information from 6-3 is displayed to the user via the user interface unit of the main control unit 1.

  Further, this data transmission system controls the terminal devices 6-1, 6-2, and 6-3 by measurement data based on measurement values from the measurement sensor 5. In addition, if there is a change in the status of a fire, power outage, etc. in the terminal devices 6-1, 6-2, 6-3, the terminal devices 6-1, 6-2, 6-3 that are the measurement data supply destinations are narrowed down. . As a result, the data transmission performance of the measurement data is not impaired during normal times, and the measurement data is quickly transmitted to the terminal control unit that is particularly necessary in the event of an emergency such as a fire or power failure.

  Terminal devices 6-1, 6-2, and 6-3 are power equipment, lighting equipment, air-conditioning ventilation equipment, etc., and are observation points (hereinafter referred to as “points”) for detecting state changes such as fires and power outages. ). The state change at the point is reported to the main control unit 1 via the terminal control unit and the repeater as state change information.

  This data transmission system includes a main control unit 1, two repeaters 2-1, 2-2, an arithmetic unit 3, three terminal control units 4-1, 4-2, 4-3, a measurement sensor 5 and three It consists of terminal devices 6-1, 6-2, and 6-3. Between the main control unit 1 and the repeaters 2-1 and 2-2, the data transmission line 7, between the repeater 2-1 and the arithmetic unit 3, the terminal control unit 4-1, the data transmission line 8-1 and the repeater 2-2 and terminal control units 4-2 and 4-3 are connected by a data transmission path 8-2.

  The main control unit 1 operates by program control based on data received from the terminal devices 6-1, 6-2, 6-3, and the terminal devices 6-1, 6-2, 6-3 and the arithmetic device 3 Centralized control. The main control unit 1 has a user interface.

  The repeater 2-1 relays data transmission between the main control unit 1 and the arithmetic device 3 and the terminal control unit 4-1, and receives measurement data from the arithmetic device 3, based on the internal reference designation table. Transmit to repeater 2-2 or terminal control unit 4-3. When the repeater 2-2 relays data transmission between the main control unit 1 and the terminal control units 4-2 and 4-3 and receives measurement data from the repeater 2-1, the repeater 2-2 creates an internal reference designation table. Based on this, the data is transmitted to the terminal control units 4-2 and 4-3. The terminal control units 4-1, 4-2, and 4-3 control the terminal devices 6-1, 6-2, and 6-3 based on the received control data and measurement data from the main control unit 1, respectively.

  Based on the measurement value received from the measurement sensor 5, the arithmetic unit 3 generates measurement data by referring to the internal reference designation table, the fire reference designation table or the power failure reference designation table, and transmits the measurement data to the repeater 2-1 . Which table to refer to is determined by the control of the main control unit 1. Measurement data means data including information indicating measurement points (referred to as measurement point information), information with reference designation, and measurement values.

  The measurement sensor 5 collects measurement values at measurement points a, b, c, and d required for controlling the terminal devices 6-1, 6-2, and 6-3. The measurement points a, b, c, and d are provided in the vicinity and portions of the terminal devices 6-1, 6-2, and 6-3, and the measurement targets are, for example, load power, illuminance, temperature, and the like.

  FIG. 2 is a block diagram showing details of the main control unit 1. The main control unit 1 includes a determination point storage unit 10, a current mode storage unit 13, a data processing unit 14, a data transmission / reception unit 17, and an input / output unit 18. The determination point storage unit 10 includes a fire determination point storage unit 11 and a power failure determination point storage unit 12, and the data processing unit 14 includes a mode switching unit 15 and a determination point input unit 16.

  The input / output unit 18 is a user interface unit. That is, the main control unit 1 transmits the control data for the arithmetic device 3 and the terminal control unit 4-1 input from the input / output unit 18 by the user via the transmission path 7, the repeater 2-1 and the transmission path 8-1. Then, the measurement sensor 5 and the terminal device 6-1 are controlled. Further, control data for the terminal control units 4-2 and 4-3 is transmitted via the transmission path 7, the repeater 2-2, and the transmission path 8-2 to control the terminal apparatuses 6-2 and 6-3.

  On the other hand, information from the measurement sensor 5, the terminal devices 6-1, 6-2, and 6-3 is collected by this reverse route, and this information is displayed to the user via the input / output unit 18. It has a function.

  The data transmitter / receiver 17 is connected to the transmission path 7 and transmits / receives data to / from the repeater 2-1 or the repeater 2-2.

  The fire determination point storage unit 11 stores a point serving as a fire occurrence trigger that is input in advance from the input / output unit 18 via the determination point input means 16 by the user. Similarly, the power failure determination point storage unit 12 stores a point serving as a power failure occurrence trigger that is input in advance from the input / output unit 18 via the determination point input means 16 by the user. The current mode storage unit 13 stores whether the current operation mode is normal, fire occurrence, or power failure.

  The mode switching means 15 compares the point in the state change information received by the data transmitting / receiving unit 17 with the point stored in the fire determination point storage unit 11 and the power failure determination point storage unit 12, and if they match, The data transmission / reception unit 17 notifies the arithmetic device 3 of a mode switching instruction to the matched mode.

  The repeaters 2-1 and 2-2 have the same configuration, and include a transmission control table 21 and a data transmitter / receiver 22 as shown in FIG. The transmission control table 21 stores the transmission destination for each measurement point information. The data transmitting / receiving unit 22 acquires a transmission destination corresponding to the measurement point information in the received measurement data from the transmission control table 21, and transmits the received measurement data.

  FIG. 4 illustrates the stored contents of the transmission control table 21. 4A shows the contents stored in the transmission control table 21 in the repeater 2-1, and FIG. 4B shows the contents stored in the transmission control table 21 in the repeater 2-2. Referring to FIG. 4A, the repeater 2-1 transmits measurement data corresponding to the measurement point information a and b to the repeater 2-1, and the measurement data corresponding to the measurement point information c is transmitted to the terminal control unit 4-1. The measurement data corresponding to the measurement point information d is not transmitted anywhere. In addition, referring to FIG. 4B, the repeater 2-2 transmits measurement data corresponding to the measurement point information a and b to the terminal control units 4-2 and 4-3, respectively, and corresponds to the measurement point information c and d. This indicates that the measurement data is not transmitted anywhere.

  FIG. 5 is a block diagram showing details of the arithmetic device 3. Referring to FIG. 5, the arithmetic device 3 includes a reference designation table storage unit 30, a data processing unit 35, and a data transmission / reception unit 37. The data transmission / reception unit 37 transmits / receives data to / from the repeater 2-1, and the data processing unit 35 generates measurement data and refers to the reference designation table storage unit 30. The reference designation table storage unit 30 stores a reference designation table 31, a fire reference designation table 32, a power failure reference designation table 33, and a fire / power failure reference designation table 34 as tables to be referred to by the data processing unit 35. Yes.

  FIG. 6 illustrates the storage contents of the reference designation table 31, the fire reference designation table 32, the power failure reference designation table 33, and the fire / power failure reference designation table 34. 6A is a reference designation table 31, FIG. 6B is a fire reference designation table 32, FIG. 6C is a power failure reference designation table 33, and FIG. 6D is a fire / power failure reference designation table 34. Each stored content is shown. The reference designation in each table indicates whether or not the measurement data is referred to by the repeater 2-1 for the measurement point.

The data processing unit 35 includes reference designation table selection means 36. The reference designation table selection means 36 is used for the corresponding mode among the reference designation table 31 in the reference designation table storage unit 30, the fire reference designation table 32, the power failure reference designation table 33, and the fire / power failure reference designation table 34. The presence / absence of transmission to the repeater 2-1 is searched from the table based on the measurement data in the data acquired by the data transmitting / receiving unit 37. The data transmitting / receiving unit 37 transmits only the measurement data corresponding to the measurement point information that is referred to as “present” in these tables to the repeater 2-1.
[Description of operation]
Next, the transmission operation of the measurement data of the present embodiment configured as described above to the terminal device will be described. The initial current mode is normal, and is stored in the current mode storage unit 13 of the main control unit 1 and is notified to the arithmetic unit 3.

  The measurement sensor 5 acquires the measurement values of the measurement points a, b, c, and d at a constant cycle, and the data processing unit 35 of the arithmetic device 3 generates measurement data based on the measurement values. Then, it is checked whether or not the measurement points a, b, c, and d are designated by reference with the reference designation table 31 shown in FIG. As a result, data (measurement data) including the measurement point information of the measurement points a, b, and c with reference designation, the information with reference designation, and the measurement value is transmitted to the repeater 2-1.

  The repeater 2-1 that has received the measurement data checks the transmission destination of the measurement data with reference designation using the transmission control table in FIG. 4A, and sends the measurement points a and b to the repeater 2-2 and the terminal control unit 4. The measurement data of each measurement point c is transmitted to -1.

  The terminal control unit 4-1 that has received the data controls the terminal 6-1 based on the measurement value in the measurement data. Also, the repeater 2-2 that has received the data checks the transmission destination of the measurement point information with reference designation by using the transmission control table of FIG. 4B, and sends the measurement point a to the terminal control unit 4-2. The measurement data of each measurement point b is transmitted to 4-3.

  The terminal control unit 4-2 that has received the measurement data controls the terminal 6-2 based on the measurement value in the measurement data, and the terminal control unit 4-3 that has received the measurement data performs the measurement in the measurement data. The terminal 6-3 is controlled by the value.

  When the main control unit 1 receives state change information indicating a state change (off to on), the mode switching means 15 of the main control unit 1 determines the point in the data acquired from the data transmitting / receiving unit 17 and The point stored in the fire determination point storage unit 11 is compared. As a result, if the points match, the mode switching means 15 switches the measurement value transmission mode to the fire mode, stores it in the current mode storage unit 13, and notifies the arithmetic device 3 of the fire mode switching instruction. The reference designation table selection means 36 of the arithmetic unit 3 that has received the fire mode switching instruction changes the reference designation table 31 in FIG. 6 (A) to the fire reference designation table 32 in FIG. 6 (B).

  After the change to the fire mode mode, the arithmetic unit 3 checks the reference designation of the measurement point by referring to the fire reference designation table 32 in FIG. 6B, and the measurement data corresponding to the measurement point with the reference designation is transmitted to the repeater 2. Send to -1. At this time, the number of measurement points with reference designation in the normal mode and the fire mode is clear by comparing the reference designation table 31 in FIG. 6A and the fire reference designation table 32 in FIG. 6B. Thus, the number in the fire mode is one less than two. For this reason, only the more important measurement data can be transmitted in the event of a fire.

  On the other hand, as a result of the comparison between the state change information and the points stored in the fire determination point storage unit 11, if the points do not match, the points in the data acquired from the data transmission / reception unit 17 and the power outage determination point storage unit 12 Compare with memorized points. As a result, when the points match, the mode switching means 15 switches the measurement value transmission mode to the power failure mode, stores it in the current mode storage unit 13, and notifies the arithmetic device 3 of the power failure mode switching instruction. The reference designation table selection means 36 of the arithmetic unit 3 that has received the power failure mode switching instruction changes the reference designation table 31 in FIG. 6 (A) to the power failure reference designation table 33 in FIG. 6 (C).

  After the change to the power failure mode, the arithmetic unit 3 checks the presence / absence of the reference designation of the measurement point by referring to the power failure reference designation table 33 in FIG. 6C, and obtains the measurement data corresponding to the measurement point with the reference designation. Send to 1. At this time, the number of measurement points with reference designation in the normal mode and the power failure mode is clear by comparing the reference designation table 31 in FIG. 6 (A) and the reference designation table 33 in the power failure in FIG. 6 (C). As such, the number in the power failure mode is smaller. For this reason, at the time of a power failure, only more important measurement data can be transmitted.

  In the power failure mode, if the point in the data acquired by the main control unit 1 from the data transmission / reception unit 17 coincides with the point stored in the fire judgment point storage unit 11, the mode switching means 15 transmits the measured value. The mode is switched to the fire / power failure mode and stored in the current mode storage unit 13, and a fire / power failure mode switching instruction is notified to the computing device 3. Upon receiving the fire / power failure mode switching instruction, the reference designation table selection means 36 of the arithmetic unit 3 changes the power failure reference designation table 33 in FIG. 6 (C) to the fire / power failure reference designation table 34 in FIG. 6 (D). To do.

  After the change to the fire / power failure mode, the arithmetic unit 3 checks the reference designation of the measurement point by referring to the fire / power failure reference designation table 34 in FIG. 6 (D), and obtains the measurement data corresponding to the measurement point with the reference designation. Send to repeater 2-1. At this time, the number of measurement points with reference designation in the normal mode and the power failure mode is clear by comparing the reference designation table 31 in FIG. 6 (A) and the reference designation table 33 in the power failure in FIG. 6 (C). Thus, the number in the power failure mode is one, which is 0. For this reason, at the time of a power failure, only more important measurement data can be transmitted.

  Switching from the fire mode to the normal mode is performed when the main control unit 1 receives a change in the state of the fire alarm point (ON to OFF), and switching from the power failure mode to the normal mode is performed by the main control unit 1 at the power failure alarm point. When the state change (ON to OFF) is received, the main control unit 1 performs. The same applies to switching from the fire / power failure mode to the normal mode, the fire mode, and the power failure mode.

  In the main control unit 1, switching to the fire mode, power failure mode and fire / power failure mode or vice versa is performed from the terminal devices 6-1, 6-2, 6-3 as described above. In addition to the method of notifying the user, the user can also change the mode from the input / output unit 18 of the main control unit 1.

  As described above, in this embodiment, in the data transmission of measurement data, the measurement data corresponding to the measurement points of low importance are not sent to the data transmission path only in case of an emergency such as a fire or a power failure. Therefore, it is possible to quickly transmit measurement data only to each terminal control unit required for control in the event of an emergency such as a fire / power outage without impairing normal data transmission performance, and terminal control due to data transmission time delay Part control delay can be minimized.

[Description of configuration]
Next, a second embodiment of the present invention will be described with reference to the drawings. The difference between the first embodiment and the first embodiment is that the first embodiment relates to mode switching in the event of an emergency such as a fire or power outage, while the second embodiment is mode switching based on schedule management. is there.

  The configuration of the data transmission system of the second embodiment is represented in FIG. However, details of the main controller 1 in this embodiment are shown in FIG. Referring to FIG. 7, the main control unit 1 includes a determination point storage unit 40, a current mode storage unit 73, a data processing unit 44, a data transmission / reception unit 48, and an input / output unit 49. The determination point storage unit 40 includes a daytime determination point storage unit 41 and a nighttime determination point storage unit 42, and the data processing unit 44 includes a mode switching unit 45, a determination point input unit 46, and a schedule determination unit 47.

  The functions of the current mode storage unit 43, mode switching unit 45, decision point input unit 46, data transmission / reception unit 48, and input / output unit 49 are the same as the units having the same names in the first embodiment shown in FIG.

  The daytime judgment point storage unit 41 stores points that are input in advance from the input unit 49 via the judgment point input unit 46 and that operate according to a schedule that is turned on at the daytime start time and turned off at the daytime end time. Similarly, the night judgment point storage unit 42 stores points that are input in advance from the input / output unit 49 via the judgment point input means 46 and that operate according to a schedule that is turned on at night start time and turned off at night end time. ing.

  Each decision point can be changed at any time. The mode switching means 45 compares the points in the data received by the data transmission / reception unit 49 with the points stored in the daytime judgment point storage unit 41 and the nighttime judgment point storage unit 42 of the judgment point storage unit 40, and matches. In such a case, the data transmission / reception unit 48 notifies the arithmetic device 3 of a switching instruction to the matching mode.

  When a point state change (on to off) that triggers the daytime end time is transmitted, the mode switching means 45 notifies the arithmetic device 3 of a normal mode switching instruction from the data transmitting / receiving unit 79. The schedule determination unit 47 determines which of the two switching instructions is to be notified.

  FIG. 8 is a block diagram illustrating details of the arithmetic device 3 according to the second embodiment. Referring to FIG. 8, the arithmetic device 3 includes a reference designation table storage unit 50, a data processing unit 84, and a data transmission / reception unit 56. The functions of the data processing unit 54 and the data transmission / reception unit 56 are the same as the units having the same names in the first embodiment shown in FIG.

  The reference designation table storage unit 50 includes a daytime reference designation table 51, a nighttime reference designation table 52, and a normal reference designation table 53. The daytime reference designation table stores the presence / absence of reference to measurement data including measurement values at each measurement point in the daytime, and the night reference designation table stores presence / absence of reference to measurement data including measurement values at each measurement point at night. Yes. In addition, the normal reference designation table stores the presence / absence of reference to measurement data including measurement values at each measurement point during the day and night.

  These tables store the presence or absence of reference for each measurement point, as illustrated in FIG. Reference designation in FIG. 9 indicates whether or not the measurement data is referred to by the repeater 2-1 for the measurement point, as in FIG.

  Receiving the mode switching notification, the arithmetic unit 3 transmits the measurement data in the data acquired by the data transmitting / receiving unit 56 to the repeater 2-1, from the table of the corresponding mode in the reference designation table storage unit 50, Whether or not measurement data is transmitted is searched for each measurement point, and transmission is performed for measurement points with transmission.

Switching modes between daytime and nighttime in this way is called “schedule function”. The daytime start time and the nighttime start time change from season to season, and the schedule function is executed by notifying the main control unit 1 of this as state change information from the terminal devices 6-1, 6-2, 6-3.
[Description of operation]
Currently, there are air conditioners that are used only during the day and air conditioners that are used only during the night, and the measurement points required to operate the air conditioner that is used only during the day are a and b. It is assumed that the measurement points are c and d.

  In this case, if the reference designation table used by the arithmetic device 3 in each mode is set as shown in FIG. 9, the air conditioner operating in the daytime can use the measured values of the measurement points a and b for control. Measurement data such as measurement values at measurement points c and d that are not required during the daytime do not flow through the data transmission path. Similarly, an air conditioner that operates at night can use the measurement values at the measurement points c and d for control, and measurement data such as measurement values at the measurement points a and b that are not required at night are data transmission paths. Does not flow. Furthermore, normally, measurement data such as measurement values at measurement points a, b, c, and d do not flow through the data transmission path.

  The measurement sensor 5 acquires the measurement values of the measurement points a, b, c, and d at a constant cycle, and the arithmetic device 3 generates measurement data for each of the measurement points a, b, c, and d. When the current mode is normal, the presence / absence of reference designation of the acquired measurement point is checked by referring to the reference designation table in FIG. 9C, and if the reference designation is present, the measurement data is transmitted to the repeater 2-1.

  The repeater 2-1 that has received the data checks the transmission destination of the measurement point information with reference designation by using the transmission control table (A) in FIG. 6, and sends the measurement data of the measurement points a and b to the repeater 2-2. The measurement data of the measurement point c is transmitted to the control unit 4-1.

  In addition, the repeater 2-2 that has received the data checks the transmission destination of the measurement data with reference designation by using the transmission control table in FIG. 4B, and sends it to the terminal control units 4-2 and 4-3 of the respective transmission destinations. Send measurement data. The terminal control unit 4-2 that has received the data controls the terminal 6-2 based on the measured value in the data. Similarly, the terminal control unit 4-3 that has received the data controls the terminal 6-3 according to the measured value in the data.

  When the main control unit 1 transmits a state change (off to on) of the point that triggers the daytime start time, the mode switching means 75 of the main control unit 1 includes the data in the data acquired from the data transmitting / receiving unit 78. When the points are compared with the points stored in the daytime judgment point storage unit 71 and coincide with each other, a daytime mode switching instruction is sent to the computing device 3 in order to switch the measurement value transmission mode to the daytime mode.

  Receiving the daytime mode switching instruction, the arithmetic unit 3 changes the internal reference designation table to be used to the daytime reference designation table 81 in FIG. 9A, and transmits the measurement data at the measurement point with the reference designation to the repeater 2-1. Send to.

  In the main control unit 1, the switching to the daytime mode, the normal mode or the night mode, and the switching in the opposite direction are changed from the terminal devices 6-1, 6-2, 6-3 as described above. In addition to the method of notifying information, the user can also change the mode from the input / output unit 79 of the main control unit 1.

  As described above, in this embodiment, the schedule function is used to determine the transmission / non-transmission of measurement data. Therefore, the data transmission path is changed according to the daytime and nighttime periods that vary throughout the year. The load by measurement data can be adjusted.

The block diagram which shows one Example of the data transmission system of this invention The block diagram which shows the detailed example of the main-control part in FIG. Block diagram showing details of repeater in FIG. The figure which shows the example of the memory content of the transmission control table in FIG. FIG. 1 is a block diagram showing a detailed example of the arithmetic unit in FIG. The figure which shows the example of the memory content of the reference designation table memory | storage part in FIG. The block diagram which shows the other detailed example of the main-control part in FIG. The block diagram which shows the other detailed example of the arithmetic unit in FIG. The figure which shows the example of the memory content of the reference designation table memory | storage part in FIG.

Explanation of symbols

1 Main control unit
2-12-2 Repeater 3 Computing device
4-14-2-4-3 Terminal controller 5 Measurement sensor
6-16-26-3 Terminal equipment 7,8-1,8-2 Data transmission path
10, 40 Judgment point storage
11 Fire judgment point storage
12 Power failure judgment point storage
13, 43 Current mode memory
14, 44 Data processing section
15, 45 Mode switching means
16, 46 Judgment point input means
17 Data transceiver
18, 49 I / O section
21 Transmission control table
22, 37, 48, 56 Data transceiver
30, 50 Reference designation table storage
31 Reference specification table
32 Reference table in case of fire
33 Power failure reference specification table
34 Fire / power outage reference designation table
35, 54 Data processing section
36, 55 Reference designation table selection means
41 Daytime judgment point storage
42 Night judgment point storage
47 Schedule judgment means
51 Daytime reference specification table
52 Night reference specification table
53 Normal reference specification table

Claims (3)

In a data transmission system in a centralized control device that centrally controls a terminal device with measurement data based on measurement values of measurement points measured by a measurement sensor,
A determination point storage unit that stores observation points for observing an abnormal state of the surroundings or part of the terminal device; and
A reference designation table that stores the presence or absence of reference to the measurement data including the measurement value of each measurement point for each state around the installation of the terminal device or the part;
A transmission control table storing the transmission destination of each measurement data;
When there is a notification of the abnormal state from the terminal device, it checks whether the observation point matches the observation point stored in the judgment point storage unit, and mode switching means for switching the mode corresponding to the state based on the result When,
Data transmission comprising reference designation table selecting means for selecting one of the reference designation tables according to the mode, and transmitting measurement data with reference in the selected reference designation table by the transmission control table system. In a data transmission system in a centralized control device that centrally controls a terminal device with measurement data based on measurement values of measurement points measured by a measurement sensor,
A fire judgment point storage unit that stores observation points for observing a fire around the installation or part of the terminal device;
A power outage determination point storage unit describing an observation point for observing a power outage around the installation of the terminal device or a part,
A reference designation table storing presence / absence of reference to measurement data including measurement values of the respective measurement points when the surroundings of the terminal device or the state of the part is normal;
A fire reference designation table storing presence / absence of reference to measurement data including measurement values of the respective measurement points when a fire occurs in the vicinity of the terminal device or in a site;
A power failure reference designation table storing presence / absence of reference to measurement data including measurement values of the respective measurement points when a power failure occurs around the installation or part of the terminal device,
A transmission control table storing the transmission destination of each measurement data;
When there is a notification of the fire or power failure from the terminal device, it is checked whether the observation point coincides with the observation point stored in the fire judgment point storage unit or the power failure judgment point storage unit. Mode switching means for switching the power failure mode;
Reference designation table selection means for selecting either the reference designation table at the time of fire or the reference designation table at the time of power failure according to the fire mode or the power failure mode, and the measured data with reference in the selected reference designation table is A data transmission system, wherein transmission is performed by a transmission control table. In a data transmission system in a centralized control device that centrally controls a terminal device with measurement data based on measurement values of measurement points measured by a measurement sensor,
A daytime judgment point storage unit that stores observation points of the surroundings or part of the terminal device that operates in a schedule that is turned on at daytime start time and turned off at daytime end time;
A night judgment point storage unit that stores observation points of the periphery or part of the terminal device that operates on a schedule that is turned on at night start time and turned off at night end time;
A normal reference designation table storing presence / absence of reference to measurement data including measurement values at each measurement point in the day and night;
A daytime reference designation table storing presence / absence of reference to measurement data including measurement values of the respective measurement points in the daytime;
A night reference designation table storing presence or absence of reference to measurement data including measurement values of the respective measurement points at night;
A transmission control table storing the transmission destination of each measurement data;
When there is a notification of daytime start or nighttime start from the terminal device, it is checked whether the observation point coincides with the observation point stored in the daytime judgment point storage unit or nighttime judgment point storage unit, and based on the result, the daytime Mode switching means for switching between mode and night mode;
Reference designation table selection means for selecting either the daytime reference designation table or the nighttime reference designation table according to the daytime mode or nighttime mode, and the transmission control of the measurement data with reference in the selected reference designation table A data transmission system, characterized by being transmitted by a table.

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