JP2010199684A - Operation terminal of remote monitoring control system - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To make a system configuration simpler than a conventional embodiment while making an operation alternately effective and ineffective. <P>SOLUTION: A control means (main microcomputer 12) can be switched between a permitted state and an inhibited state by operating a switch S1 of the other operation terminal (operation terminal 110 for switching). Then an operation input accepted by an operation input accepting means (operation input unit 3) is made ineffective in the inhibited state, so that a repeating device need not be installed between the operation terminal and a transmission controller 100 unlike conventional embodiments, and while the operation can be made alternately effective and ineffective, the system configuration can be made simpler than the conventional embodiment. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to an operation terminal used in a remote monitoring control system that controls and monitors a load operation from a remote location.

  Conventionally, a remote monitoring control system configured as shown in FIG. 5 has been provided for load control (see, for example, Patent Document 1). In this remote monitoring control system, a plurality of operation terminals 110 and control terminals 120 are connected in a branch connection (multidrop connection) to the two-wire signal line Ls connected to the transmission control device 100. A unique address is set for each operation terminal 110 and each control terminal 120, and the transmission control apparatus 100 recognizes the operation terminal 110 and the control terminal 120 individually using these addresses. The operation terminal device 110 includes a switch S, and a load L is connected to the control terminal device 120. Further, the operation terminal 110 is provided with confirmation lamps 110a and 110b made of display elements (light emitting diodes) for confirming the operating state of the load L. The load L is not particularly limited, but an illumination load is often used.

  The transmission control apparatus 100 sends a transmission signal Vs having the format shown in FIG. 6A to the signal line Ls. That is, the synchronization signal SY indicating the start of signal transmission, the mode data MD indicating the mode of the transmission signal Vs, the address data AD for calling the operation terminal 110 and the control terminal 120 separately, the control data CD for controlling the load L, In the case of bipolar (± 24V) consisting of a signal return period WT which is a time slot for receiving checksum data CS for detecting a transmission error and a return signal (monitoring data) from the operation terminal 110 or the control terminal 120 It is a division multiplexed signal, and data is transmitted by pulse width modulation (FIG. 6B). In each operation terminal 110 and each control terminal 120, when the address data AD transmitted by the transmission signal Vs received via the signal line Ls matches the preset address, the control data CD is obtained from the transmission signal Vs. At the same time, the monitoring data is returned as a current mode signal (a signal sent by short-circuiting the signal line Ls through an appropriate low impedance) in the signal return period WT of the transmission signal Vs.

  When data is transmitted from the transmission control apparatus 100 to a desired operation terminal 110 or control terminal 120, the mode data MD is set as the control mode, and the address of the operation terminal 110 or the control terminal 120 is set as the address data AD. If the transmission signal Vs is transmitted and the transmission signal Vs is transmitted to the signal line Ls, the operation terminal device 110 or the control terminal device 120 matching the address data AD receives the control data CD, and the monitoring data is transmitted in the signal return period WT. Return it. The transmission control apparatus 100 confirms that the control data CD has been transmitted to the desired operation terminal 110 or control terminal 120 based on the relationship between the transmitted control data CD and the monitoring data received during the signal return period WT. The control terminal 120 outputs a load control signal for controlling the load L according to the received control data CD, and the operation terminal 110 outputs a monitoring signal for performing an operation confirmation display of the load L according to the received control data CD. To do.

  On the other hand, the transmission control device 100 always sends a transmission signal Vs in which the mode data MD is a dummy mode at regular time intervals, and when the operation terminal 110 attempts to transmit some information to the transmission control device 100. Then, an interrupt signal as shown in FIG. 6C is generated in synchronization with the synchronization signal SY of the transmission signal Vs in the dummy mode. At this time, the operation terminal 110 sets an interrupt flag to prepare for subsequent information exchange with the transmission control apparatus 100. When the transmission control apparatus 100 receives the interrupt signal, the mode data MD is set to the interrupt polling mode and the upper half of the address data AD (the upper 4 bits if the address data AD is 8 bits) is sequentially increased. In the operation terminal 110 that has transmitted the transmission signal and generated the interrupt signal, the upper 4 bits of the address data AD of the transmission signal in the interrupt polling mode match the upper 4 bits of the address set in the operation terminal 110. In this case, the lower half of the address bits are returned to the transmission control apparatus 100 during the signal return period WT. In this way, the transmission control apparatus 100 searches for 16 operation terminals 110 that have generated interrupt signals in batches, so that the operation terminal 110 can be found in a relatively short time.

  When the transmission control device 100 acquires the address of the operation terminal 110 that generated the interrupt signal, the mode data MD is set to the monitoring mode, and a transmission signal having the acquired address data AD is sent to the signal line Ls. In response to the transmission signal, the operation terminal 110 returns information to be transmitted in the signal return period WT. Finally, the transmission control apparatus 100 sends a signal instructing an interrupt reset to the operation terminal 110 that has generated the interrupt signal, and cancels the interrupt flag of the operation terminal 110. As described above, information transmission from the operation terminal 110 to the transmission control device 100 is performed by four signal transmissions from the transmission control device 100 to the operation terminal 110 (dummy mode, interrupt polling mode, monitoring mode, Complete). When the transmission control device 100 tries to know the desired operating state of the control terminal 120, it is only necessary to send a transmission signal using the mode data MD as monitoring data.

  The above operations will be briefly summarized. First, when input data by the switch S is generated for the operation terminal 110, monitoring data corresponding to the input data is returned to the transmission control device 100, and the transmission control device 100 transmits the control data CD to the control terminal 120. The control terminal 120 controls the load L by outputting a load control signal. Here, a load monitoring input is given to the control terminal 120, monitoring data corresponding to the load monitoring input is returned to the transmission control device 100, and the returned monitoring data is transmitted to the operation terminal 110. The operation terminal 110 outputs a monitoring signal by this transmission signal. The monitoring output is usually used to turn on / off the confirmation lamp.

  By the way, when the remote monitoring control system described above is installed in a tenant building or commercial facility, the operation terminal 110 installed in a place where an unspecified number of people can operate is carelessly operated and the load L is reduced. There is a risk that the operation stops (for example, the lighting load is turned off). Therefore, conventionally, a relay device that can selectively switch between a permission state that enables operation of an operation terminal connected to a downstream signal line and a prohibition state that disables operation of the operation terminal. The operation terminal 110 that is connected to the signal line Ls and is installed in a place where an unspecified number of people can operate as described above is connected to the signal line on the downstream side of the relay device (for example, a patent) Reference 2). In other words, if the relay device is set to the prohibited state, the operation of the operation terminal connected to the signal line downstream of the relay device becomes invalid, so that an erroneous operation of the operation terminal by an unspecified number of people Can be prevented.

JP 2003-9260 A Japanese Patent Laid-Open No. 7-15773 (see Example 2)

  However, in the conventional example described in Patent Document 2, since it is necessary to provide a relay device between the operation terminal unit that enables / disables the operation and the transmission control device 100, the cost increases and the signal line increases. There is a problem that the wiring design is complicated, and there is a problem that the relay device is moved and the signal lines are rewired with the layout change.

  The present invention has been made in view of the above circumstances, and an object of the present invention is to provide an operation terminal for a remote monitoring control system that can switch the validity / invalidity of the operation and can simplify the system configuration as compared with the conventional example. There is.

  In order to achieve the above object, according to the first aspect of the present invention, there is provided an operation terminal having a plurality of switches and having a unique address set for each switch, and a plurality of loads connected and a unique address for each load. Any load is controlled based on the monitoring data received from the control terminal when it is connected to the control terminal to be set and the signal line connecting the control terminal and the control terminal in a branch connection. A transmission control device that transmits control data to a control terminal connected to a load for which control data is generated and a correspondence relationship with the operated switch is set. The transmission control device is operated by the switch. When an interrupt signal transmitted via the signal line is received from the operated operation terminal, the address of the operation terminal that is the transmission source of the interrupt signal is searched for and the operation of the transmission source is performed. An end device is an operation terminal used in a remote monitoring control system that returns a transmission signal including its own address in response to an address search by a transmission control device, and transmits a transmission signal and an interrupt signal via a signal line. Generating transmission data, a plurality of switches, an operation input receiving means for receiving operation inputs of the switches, a storage means for storing the address, and monitoring data corresponding to the operation inputs received by the operation input receiving means And a control means for transmitting a transmission signal including the monitoring data from the transmission means, and the storage means stores a unique switching address for which a correspondence relationship is set with a switch of another operation terminal. The control means alternatively selects a permission state in which the operation input accepted by the operation input acceptance means is valid and a prohibition state in which the operation input is invalid. When switching to the permitted state, the monitoring data is generated according to the operation input and the transmission signal including the monitoring data is transmitted, and when switched to the prohibited state, the monitoring data corresponding to the operation input is executed. In addition, when the control data corresponding to the operation of the switch of the other operation terminal set with the switching address is received from the transmission control device, the permission state and the prohibition state are determined according to the control data. It is characterized by switching.

  According to the first aspect of the present invention, the control means can be switched between the permitted state and the prohibited state by operating a switch of another operation terminal, and the operation input received by the operation input receiving means is invalidated in the prohibited state. Therefore, it is not necessary to install a relay device between the transmission control device as in the conventional example, and the system configuration can be simplified as compared with the conventional example while enabling / disabling operation can be switched.

  The invention of claim 2 is characterized in that, in the invention of claim 1, the control means invalidates only the operation input corresponding to one or more switches previously selected from the plurality of switches.

  According to the invention of claim 2, since only the operation of some of the plurality of switches can be invalidated, it is easy to use.

  According to the present invention, the system configuration can be simplified as compared with the conventional example while enabling / disabling operation can be switched.

It is a block diagram which shows embodiment of the operating terminal which concerns on this invention. It is a perspective view same as the above. (A), (b) is explanatory drawing of the screen in the same as the above. It is a system configuration diagram of a remote monitoring control system including the same as above. It is a system block diagram of the conventional remote monitoring control system. It is explanatory drawing of the transmission signal in the same as the above.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

  FIG. 4 is a system configuration diagram of a remote monitoring and control system including the operation terminal 1 of the present embodiment. In this remote monitoring and control system, the operation terminal device 1 of this embodiment, another operation terminal device (switching operation terminal device to be described later) 110, and the two-wire signal line Ls connected to the transmission control device 100, A control terminal (relay control terminal) 120 is branched and connected (multi-drop connection). The control terminal 120 controls the latching type remote control relay 130 for turning on / off the power supply from the commercial AC power supply AC to the load (lighting load L). Here, 140 is a remote control transformer which creates and supplies the remote control relay 130, the control terminal 120, and the operation wires (AC 24V) of the operation terminal 1 from the commercial AC power source AC.

  As shown in FIG. 1, the operation terminal 1 according to the present embodiment includes a display panel 2 in which a backlight is integrated with a liquid crystal display, and a transparent plate-like shape that is disposed on the screen (front surface) of the display panel 2. And an operation input unit (operation input receiving means) 3 including a touch switch. The display panel 2 uses a matrix display type in which a large number of pixels are arranged in a matrix form vertically and horizontally, and displays a figure by a combination of pixels. The operation input unit 3 is a resistive pressure-sensitive touch that arranges a large number of contact portions made of transparent electrodes on a transparent sheet-like member and outputs which part of the sheet-like member is touched when a finger touches the sheet-like member. It is a switch and constitutes a touch panel display together with the display panel 2.

  The operation terminal 1 includes a communication circuit (transmission means) 11 that is connected to a signal line Ls connected to the transmission control device 100 and transmits and receives a transmission signal. The communication circuit 11 is connected to a main microcomputer 12 as control means, and the main microcomputer 12 operates in accordance with a program and data written in a flash memory 13 provided as a built-in memory (storage means) of the operation terminal device 1. At least an address as the operation terminal 1 is written in the flash memory 13.

  The main microcomputer 12 outputs data indicating the display contents of the display panel 2 to the liquid crystal controller 15 through the latch circuit 14. The liquid crystal controller 15 displays predetermined contents at predetermined positions on the display panel 2 using data registered in advance in the DRAM 16. The contrast of the display panel 2 and the brightness of the backlight are automatically adjusted by the main microcomputer 12 controlling the contrast adjusting unit 17 and the backlight inverter circuit 18. Further, the main microcomputer 12 has a function of causing the buzzer 19 to ring according to the operation of the operation input unit 3.

  By the way, the operation terminal 1 of this embodiment is provided with the substantially rectangular parallelepiped-shaped container 5 as shown in FIG. 2, and it embeds the rear part of the container 5 in the wall similarly to the embedded type wiring apparatus. Can be attached to the wall. This operation terminal 1 is detachably mounted on the front side of the main unit 6 with the main unit 6 fixed to the wall so that the rear part is embedded in the wall and the front part protruding forward from the wall surface. The panel unit 7 is separated. The internal circuit of the operation terminal 1 is divided into a main unit 6 and a panel unit 7. In the present embodiment, the power supply circuit 10 (see FIG. 1) for supplying DC power to the internal circuit and the communication circuit 11 are provided on the main unit 6 side, and other circuits (the display panel 2, the operation input unit 3, the main microcomputer). 12 are provided on the panel unit 7 side.

  The main body unit 6 includes a main body case 60 including a main body body 61 formed in a box shape having a rectangular opening on the front surface, and a main body cover 62 covered on the front surface of the main body body 61. A circuit board (not shown) on which various electrical components are mounted is configured to be stored in the main body case 60. The main unit 6 includes a power supply terminal portion T1 (see FIG. 1) to which a power supply line for receiving power supply from the remote control transformer 140 is connected, and a signal terminal portion T2 (see FIG. 1) to which the signal line Ls is connected. Provided on the back side.

  The panel unit 7 includes a panel case 70 including a panel body 71 formed in a thin box shape having a rectangular opening on the front surface, and a panel cover 72 covered on the front surface of the panel body 71. A circuit board (not shown) on which various electrical components such as the main microcomputer 12 are mounted is housed in the panel case 70. Further, the panel unit 7 has a rectangular display window 74 formed on a part of the front wall of the panel case 70, and includes the display panel 2 and the operation input unit 3 in the display window 74. Below the display window 74 on the front wall of the panel case 70, an operation unit 75 for operating a mechanical switch (not shown) is provided at the center in the left-right direction, and an LED 77 ( An LED window 76 for taking out light from (see FIG. 1) is provided. The LED 77 is always lit when the panel unit 7 is energized, and has a function of indicating the position of the monitoring control device 1 to the user when the room is dark.

  Here, the operation terminal 1 of the present embodiment suppresses the amount of protrusion of the container body 5 from the wall surface, and gives a sense of unity in appearance with the commonly used embedded wiring apparatus, In order to reduce the cost of the member used for attachment, the member is attached to the wall using an embedded box (not shown) for an embedded wiring apparatus installed in the wall.

  The main body unit 6 is attached to the embedding box from the front through a construction hole provided in the wall surface, and the main body case 60 is formed in a shape and size that can accommodate the rear portion in the embedding box. In the present embodiment, the main body case 60 of the main body unit 6 is formed in a size corresponding to an embedding box in which up to two mounting frames (not shown) can be mounted. The single mounting frame here means a mounting frame standardized by JIS for an embedded wiring device (a mounting frame for a large-angle continuous wiring device). A dimension in which two pieces are connected in the left-right direction is referred to as “double use”. That is, the main body unit 6 of the present embodiment is set to a size that can be attached to the double embedded box.

  More specifically, the main body case 60 has a pair of attachment pieces 63 that extend in a direction away from each of the end faces in the vertical direction. The pair of attachment pieces 63 are provided so as to protrude in the vertical direction from the front end portion of the main body case 60, and are formed over substantially the entire length of the main body case 60 in the left-right direction. Each mounting piece 63 has a plurality (two in this case) of box holes 64 through which mounting screws are inserted, like the mounting frame used when fixing the embedded wiring device to the embedded box. Is formed. Note that a decorative plate (not shown) attached to cover the attachment piece 63 around the front end portion of the container 5 is screwed to the outside of the box hole 64 in the attachment piece 63 in the vertical direction. The plate mounting hole 65 is formed.

  By the way, since the operation terminal device 110 of the conventional example is configured to receive the operation input of the switch by the push button switch, the number of switches provided in one operation terminal device 110 is about four at the maximum. On the other hand, in the operation terminal device 1 of the present embodiment, the operation input unit 3 that receives an operation input constitutes a touch panel display together with the display panel 2, and the graphic or character displayed on the display panel 2 and the operation input unit 3. It is possible to have five or more switches depending on the combination. However, in order to simultaneously display a large number of switches corresponding to all the loads L to be controlled in one screen, a display panel 2 having a large screen size is required, which is expensive and increases in size as a whole. . Therefore, the number of switches that are simultaneously displayed in one screen is relatively small, and a plurality of screens on which different switches are simultaneously displayed (hereinafter, these screens are referred to as “pages”) are displayed. The screen size of panel 2 is reduced.

  Next, the structure which becomes the summary of this embodiment is demonstrated. In the operation terminal device 1 of the present embodiment, the main microcomputer 12 serving as the control means enables the operation input accepted by the operation input unit 3 serving as the operation input accepting means, and the prohibited state invalidates the operation input. When switching to the permitted state, the monitoring data is generated according to the operation input and the transmission signal including the monitoring data is transmitted, and when the operation input is switched to the prohibited state, the operation input is performed. The monitoring data corresponding to is not generated. However, the main microcomputer 12 can be set so as to invalidate only operation inputs corresponding to one or more switches selected in advance among a plurality of switches, as will be described later.

  Here, the flash memory 13 serving as the storage means has a unique switching address (to be described later) for which a correspondence relationship is set with a switch (switch) S1 of another operation terminal (switching operation terminal 110). Is set (stored) in advance. When the main microcomputer 12 receives control data corresponding to the operation of the changeover switch S1 of the switching operation terminal 110 from the transmission control device 100, the main microcomputer 12 switches between the permitted state and the prohibited state according to the control data. ing.

  FIG. 3A shows a setting screen W1 displayed on the display panel 2 when the main microcomputer 12 of the operation terminal device 1 performs setting related to switching between the permitted state and the prohibited state. On this setting screen W1, selection of whether or not to switch between the permitted state and the prohibited state, selection of a switch (page) to be switched, and setting of a switching address are performed. Operation input can be accepted. In the example shown in the figure, the method of switching (performing) the permission state and the prohibition state is selected, and a check is displayed in the corresponding check box CB11, and “page 1”, “page 2”, and “page 3” are displayed. “Page 2” and “Page 3” are selected as switching objects, a check is displayed in the corresponding check boxes CB22 and CB23, and “63-4” is displayed in the address display box AB of the switching address. "Is displayed. Here, the operation terminal 110 of the conventional example includes a switch S having a maximum of four circuits, the control terminal 120 can control a load L of a maximum of four circuits, and each of the operation terminal 110 and the control terminal 120 includes In order to individually recognize the switch S and the load L, a 2-bit load number is added. In the conventional remote monitoring and control system, the address of the operation terminal unit 110 or the control terminal unit 120 is called a channel, and the channel and the load number are collectively called an address. Address is set. That is, in FIG. 3A, the address “63-4” representing the load number 4 of the channel 63 is selected as the switching address.

  In the setting screen W <b> 1 in FIG. 3A, an operation button (switch) displayed in the upper right corner with a character “decision” and a rectangular figure is operated, and an operation input of the switch is received by the operation input unit 3. The main microcomputer 12 switches the contents selected on the setting screen W1, that is, “page 2” and “page 3” between the permitted state and the prohibited state and the address “63-4”. It is stored (set) in the flash memory 13 to be the address for use.

  On the other hand, the same address “63-4” as the switching address is assigned to the switching switch S1 of the switching operation terminal 110, and the setting contents are also registered in the transmission control apparatus 100. However, since a method for assigning an address to the switching switch S1 of the switching operation terminal 110 and a method for registering an address setting for the transmission control device 100 is well known in the conventional remote monitoring control system, a detailed description thereof will be omitted.

  Thus, the operation terminal device 1 of the present embodiment is installed in a place where an unspecified number of people can operate, and an unspecified number of people with respect to the switch groups displayed on the screens of the pages 2 and 3. If it is desired to prevent an erroneous operation due to the operation, the main microcomputer 12 of the operation terminal 1 may be switched from the permitted state to the prohibited state by operating the switch S1 of the switching operation terminal device 110. That is, when the switch S1 of the switching operation terminal 110 is operated, control data is transmitted from the transmission control device 100 to the operation terminal 1, and the main microcomputer 12 of the operation terminal 1 that has received the control data receives the control data. It is switched from the permitted state to the prohibited state. However, if the control data is received when the main microcomputer 12 is in the prohibited state, the state is naturally switched from the prohibited state to the permitted state.

  Here, when the switch of “page 2” or “page 3” is operated when the main microcomputer 12 is in the prohibited state, the main microcomputer 12 operates the switch as shown in FIG. Is displayed on the display panel 2 for a certain period of time (for example, for a few seconds), for example, a message for notifying the operator that is invalid. 2 ”or“ page 3 ”) is displayed on the display panel 2.

  As described above, according to the operation terminal 1 of the present embodiment, the control means (main microcomputer 12) is permitted and prohibited by operating the switch S1 of another operation terminal (switching operation terminal 110). Since the operation input received by the operation input receiving means (operation input unit 3) is invalidated in the prohibited state, it is necessary to install a relay device between the transmission control device 100 as in the conventional example. Further, there is an advantage that the system configuration can be simplified as compared with the conventional example while enabling / disabling the operation can be switched. In addition, since only a part of the switches that can be switched between valid / invalid of the operation can be used, it is easy to use.

  By the way, in this embodiment, the operation of the operation terminal 1 is switched between valid / invalid by a person operating the switch S1 of the switching operation terminal 110, but automatically when a preset time is reached. If a switching operation terminal having a timer function for transmitting monitoring data is used, it is also possible to automatically switch the validity / invalidity of the switch operation of the operation terminal 1 in accordance with the time zone. However, since a terminal device having such a timer function is well known in the art, a detailed description thereof will be omitted.

1 Operation terminal 3 Operation input part (operation input receiving means)
11 Communication circuit (transmission means)
12 Main microcomputer (control means)
13 Flash memory (memory means)

Claims (2)

An operation terminal having a plurality of switches and having a unique address set for each switch, a control terminal having a plurality of loads connected and setting a unique address for each load, an operation terminal and a control terminal The control data for controlling any load is generated on the basis of the monitoring data received from the operation terminal when any switch is operated connected to the signal line branched and connected to the operated switch. A transmission control device that transmits control data to a control terminal connected to a load to which the switch is set, and the transmission control device transmits the control data transmitted from the operation terminal on which the switch is operated via a signal line. When an interrupt signal is received, the address of the operation terminal that is the transmission source of the interrupt signal is searched, and the operation terminal that is the transmission source responds to the address search by the transmission control device. A operation terminal used for remote monitoring and control system for returning a transmission signal containing the own address and,
Transmission means for transmitting a transmission signal and an interrupt signal via a signal line, operation input reception means for receiving an operation input of the switch having a plurality of switches, storage means for storing the address, and operation input reception means Control means for generating monitoring data corresponding to the operation input accepted by the transmission means and transmitting a transmission signal including the monitoring data from the transmission means,
The storage means stores a unique switching address for which a correspondence relationship is set with a switch of another operation terminal,
The control means selectively switches between a permission state in which the operation input received by the operation input reception means is valid and a prohibition state in which the operation input is invalid, and responds to the operation input when switching to the permission state. The monitoring data is generated and the transmission signal including the monitoring data is transmitted, and when switching to the prohibited state, the monitoring data is not generated according to the operation input, and the switching address is set. When the control data corresponding to the operation of the switch of the other operation terminal is received from the transmission control device, the operation terminal of the remote monitoring and control system is switched according to the control data .   The operation terminal of the remote monitoring control system according to claim 1, wherein the control unit invalidates only an operation input corresponding to one to a plurality of switches selected in advance among the plurality of switches.

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