JP2010187224A - Monitoring and control device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a monitoring and control device capable of stopping supply of an electric power to a panel unit prior to removing the panel unit, thereby avoiding occurrence of failure or other trouble which is caused by a noise such as a surge current or the like when the panel unit is removed from a body unit. <P>SOLUTION: The body unit 6 is provided with a power supply control unit 20 for controlling a power supply state from a power supply circuit 10 to a body-side connector 68 in accordance with an operation of an operation input unit 3 of the panel unit 7 at a state that the panel unit 7 is attached to the body unit 6. The power supply control unit 20 turns off a power supply switch interposed between the power supply circuit 10 and the body-side connector 68 to stop the power supply to the panel unit 7 when there is prescribed operation input in the operation input unit 3. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a monitoring control apparatus used in a remote monitoring control system that performs load monitoring control by communication.

  2. Description of the Related Art Conventionally, a technique for transmitting a transmission signal including on / off information of a switch through a signal line to perform remote monitoring control of a load and opening / closing a relay for turning on / off a load by the transmission signal is known.

  As this type of remote monitoring and control system, a centralized control type equipped with an operation terminal having a switch and a control terminal having a relay for turning on and off a load as a terminal device and a transmission unit as a center device. There is something. A plurality of operation terminals and control terminals may be provided. The transmission unit, the operation terminal, and the control terminal are connected to a two-wire signal line, and the transmission unit is connected to the operation terminal and the control terminal by using terminal addresses set individually for the operation terminal and the control terminal. Recognize each control terminal separately.

  The transmission unit includes a memory that stores a control table that is a data table in which operation terminals and control terminals are associated with each other by addresses. When this switch unit is notified of switch ON / OFF information in any of the operation terminals using a transmission signal (using a time division multiplex transmission signal), the transmission unit is associated with the operation terminal by the control table. An instruction to open / close the relay is transmitted to the control terminal using the transmission signal. In response to this instruction, the relay is opened and closed in the control terminal. Therefore, the load is controlled according to the on / off state of the switch.

  By the way, as a monitoring control device used as an operation terminal in the above-described remote monitoring control system, a communication circuit that transmits a communication command with a plurality of loads as monitoring control targets, a display panel including a liquid crystal display, and a screen of the display panel And an operation input unit made up of a transparent touch switch arranged on top of each other, and performs load control according to the operation input of the operation input unit associated with the display content of the display panel and screen display according to the load state The thing is proposed (for example, refer patent document 1).

  This monitoring control device is configured to be arbitrarily settable with respect to the display content (screen display) of the display panel and the response (load control) to the operation of the operation input unit. Can have a function. In addition, since the display content of the display panel can be changed according to the function of the operation input unit, multi-function operation is possible in a limited space, and even when a large number of loads are operated, the operation terminal The space occupied by the vessel can be reduced.

  Furthermore, this type of monitoring and control device is divided into a main unit fixed to the wall and a panel unit that is detachably mounted on the front side of the main unit. A power circuit and a signal line are provided on the main unit side. It is conceivable to include a communication circuit to be connected, and to include a display panel, an operation input unit, and a control unit on the panel unit side. In this configuration, the panel unit has a connector that is electrically connected to the connector provided on the front side of the main unit, and receives power supply from the power supply circuit via both connectors when mounted on the main unit. Operate. As a result, the main unit and the panel unit can be individually replaced. For example, by changing only the panel unit, it is possible to configure monitoring control devices having different display panel screen sizes.

JP-A-10-243478

  By the way, in the above-described configuration, the panel unit may be detached from the main body unit during maintenance of the monitoring control device. When the panel unit is removed from the main unit, the connection between both connectors is released, so the power supply from the power circuit of the main unit to the panel unit stops, but at this time, noise such as surge current may occur. is there. For this reason, if the panel unit is removed from the main unit while the panel unit is operating, for example, while the CPU in the panel unit is writing data to a storage area such as a flash memory, It can cause problems.

  The present invention has been made in view of the above-mentioned reasons, and is caused by noise such as surge current when removing the panel unit from the main unit by stopping the power supply to the panel unit before removing the panel unit. An object of the present invention is to provide a monitoring and control apparatus that can avoid the occurrence of problems such as failures.

  The invention of claim 1 is used in a remote monitoring control system that performs load monitoring control by communication, and is divided into a main unit fixed to a wall and a panel unit detachably mounted on the front side of the main unit. The main body unit includes a power supply circuit that outputs driving power and a communication circuit that transmits a communication command with a plurality of loads as monitoring and control targets, and the panel unit includes a display panel capable of displaying characters and figures. An operation input unit that receives an operation input by the user, a control unit that causes the display panel to perform load control according to the operation input of the operation input unit associated with the display content of the display panel and screen display according to the load state; A connector that is electrically connected to a connector provided on the front side of the main unit. An end operation unit that accepts a predetermined operation input, receives power from the power supply circuit via both connectors when the main unit is mounted, and the main unit receives a predetermined operation at the end operation unit when the panel unit is mounted. It has an energization control means for stopping power supply from the power supply circuit to the panel unit in response to an operation input.

  According to this configuration, the energization control means of the main unit stops the power supply from the power supply circuit to the panel unit in response to a predetermined operation input at the end operation unit when the panel unit is mounted. Before removing from the main unit, power supply to the panel unit can be stopped. Here, if the power supply to the panel unit is stopped in advance when the panel unit is removed from the main unit, noise such as surge current will not occur even if the connection between both connectors is released. . Therefore, when removing the panel unit, there is an advantage that it is possible to avoid a malfunction such as a failure due to noise such as a surge current.

  The invention according to claim 2 is the invention according to claim 1, further comprising an end switch provided with an operating element on one surface exposed when the end operation portion is mounted on the main body unit of the panel unit. The energization control means stops the power supply to the panel unit in response to an operation input when the operation switch of the end switch is operated.

  According to this configuration, when the operator removes the panel unit from the main unit, the operator simply stops operation of the power supply to the panel unit by operating the operation element provided on one surface of the panel unit. can do. The end switch may be, for example, a push button switch that is pressed by an operating element, or a slide switch that slides the operating element.

  According to a third aspect of the present invention, in the first aspect of the invention, the operation input unit is also used as the end operation unit.

  According to this configuration, since it is not necessary to provide an end operation unit separately from the operation input unit, an increase in the number of parts due to the end operation unit can be suppressed, and the structure can be simplified.

  According to a fourth aspect of the present invention, in the second aspect of the invention, the panel unit includes a mounting unit that is mechanically coupled to the main body unit and is released by operating a release button. A button is provided on a peripheral surface intersecting the front surface of the panel unit, and the operation element of the end switch is also used as a release button.

  According to this configuration, since the release button is provided on the peripheral surface of the panel unit that intersects the front surface, when the operator removes the panel unit from the main unit, the release button is provided on the peripheral surface of the panel unit. By grasping the formed portion, the panel unit can be supported when the connection with the main unit is released. Since the operation switch of the end switch is also used as a release button, the operation unit is inevitably operated when removing the panel unit, and the energization is performed without consciously operating the end operation unit. The power supply to the panel unit can be stopped by the control means. Therefore, there is an advantage that the panel unit can be prevented from being removed from the main unit before the power supply to the panel unit is stopped.

  According to a fifth aspect of the present invention, in any one of the first to fourth aspects of the present invention, the panel unit includes a lighting display portion that is turned on when power is supplied from the power supply circuit.

  According to this configuration, the operator can know that the power supply to the panel unit has been stopped when the lighting display unit is turned off, so that the panel unit is removed after the power supply to the panel unit has been reliably stopped. It becomes possible.

  In the present invention, when the panel unit is removed from the main unit, the energization control means stops the power supply from the power supply circuit to the panel unit in response to a predetermined operation input at the end operation unit provided in the panel unit. In addition, there is an advantage that it is possible to avoid problems such as a failure that may occur when the connection between both connectors is released while power is supplied to the panel unit.

It is a schematic block diagram which shows the structure of Embodiment 1 of this invention. It is a figure which shows the structure of the remote monitoring control system using the same as the above. It is a schematic block diagram same as the above. It is a perspective view same as the above. It is a perspective view which shows the state which isolate | separated the main body unit and panel unit same as the above. It is the perspective view which looked at the panel unit same as the above from the back side. It is a perspective view which shows the structure of Embodiment 2 of this invention.

  The monitoring control apparatus described in the following embodiments is used as an operation terminal in the remote monitoring control system shown in FIG. The basic configuration of this remote monitoring control system is the same as that of the remote monitoring control system described in the background art section.

Specifically, in the example of FIG. 2, the load L includes an incandescent lamp L ₁ , a fluorescent lamp L ₂ having an inverter type lighting device, a fan coil L ₃ of an air conditioner, and a speaker L ₄ . Incandescent _{L 1} is an incandescent lamp dimming control terminal of the capacitance corresponding to the number of lamps (1500 W, 800 W, 500 W) is controlled by 33A to 33C. Fluorescent L ₂ is controlled by a fluorescent lamp dimming control terminal 33E for controlling the control terminals 33D and the optical output having a relay for controlling the turning on and off. Fan coil L ₃ is controlled in three stages a medium is strong action intensity by fan coil control terminals 33F weak, speaker L ₄ are the volume is controlled by the volume control terminal 33G. It is also possible to use an electric curtain, an electric screen, a fan for ventilation, etc. as other loads.

The operation terminal, the operation terminal 31A having a switch S _0, and dimming operation terminals 31B, 31C, the contact input operation terminal 31D to connect the various sensors contact output is obtained provided. Furthermore, an operation unit can be configured by providing an operation unit in the wireless transmitter 34a and combining it with the wireless receiver 34b. In order to extend the signal line Ls, in the illustrated example, a repeater (amplifier) 35 is inserted on the signal line Ls so that the transmission signal can be transmitted without being attenuated. In the illustrated example, two monitoring control devices 1A and 1B (hereinafter simply referred to as monitoring control device 1 when they are not distinguished from each other) as operation terminals are connected, and one monitoring control device 1A has a commercial power supply ( For example, AC 24V power is supplied from a remote-control transformer 36 that is a step-down transformer that steps down and outputs AC 100V). Hereinafter, when the operation terminals 1A, 1B, and 31A to 31D are not distinguished from each other, the operation terminal 31 is simply referred to, and when the control terminals 33A to 33G are not distinguished from each other, they are simply referred to as the control terminal 33.

  Here, the transmission unit 30 periodically transmits a transmission signal to the signal line Ls, and a bipolar pulse width modulation signal of, for example, ± 24V is used as the transmission signal. The operation terminal 31 and the control terminal 33 other than the monitoring control device 1 secure an internal power supply by full-wave rectifying this transmission signal. The transmission unit 30 is supplied with power by a commercial power source.

Here, each operation terminal 31 has an input part (switch S ₀ , sensor, etc.) of a plurality of circuits, and a load L of a plurality of circuits is connected to each control terminal 33. The control table provided in the transmission unit 30 can be associated with each circuit of the input unit and the load L. That is, for example, when having a plurality of switches S ₀ like the operation terminal 31A, all the switches S ₀ provided in the operation terminal 31A correspond to only the terminal address unique to the operation terminal 31A. , it is not possible to uniquely identify a switch S ₀ which is actually operated. Therefore, in the operation terminal 31A, by using each allocation load number for each switch S _0, a material obtained by adding the load number after the terminal address of the operation terminal 31 as the address of the switch S _0, the actual operation It is to be able to uniquely identify the switch S ₀ was. Similarly, in the control terminal device 33, a load number is assigned for each load L, and the load address added after the terminal address of each control terminal device 33 is used as the load L address. Note that a plurality of loads L connected to one control terminal 33 may constitute one load circuit. In this case, the terminal address of each control terminal 33 is used as the load L address.

By the way, in the control table, in addition to linking the switch S ₀ and a load L in one-to-one, which is also possible to connect one-to-many. For example, if the power to the fluorescent lamp L ₂ as the load L is turned on / off in the remote monitoring control system, the transmission unit 30 turns on / off the fluorescent lamp L ₂ of one circuit with one switch S _0. Doo and individual control for, has become one with the switches S ₀ and lighting of the fluorescent lamp L ₂ of the plurality of circuits and extinguished can be set with the collective control performed collectively. In other words, the individual control means that the load L of one circuit is controlled by one instruction, and the collective control means that the load L of a plurality of circuits is controlled by one instruction. Such collective control includes group control and pattern control. In the group control, the range of the load L to be controlled is associated with the switch S ₀ in advance, and the load L in the range is turned on or off at once by operating one switch S ₀ . In the pattern control, the range of addresses of the load L to be controlled and whether the load L corresponding to each address is on or off are associated with the switch S ₀ in advance, and the operation of one switch S ₀ is performed. The load L in the range is turned on or off, respectively.

To perform the group control or the pattern control described above, in the control table of the transmission unit 30, the group number or pattern number corresponding to the switches S ₀ which performs group control or the pattern control, address of the load L range to be controlled Are associated with each other. When the switch S ₀ which performs group control or the pattern control has been operated, the transmission unit 30, to expand the address of the load L to be controlled by matching the control table further load L on and off After the state is determined, an instruction is given to the control terminal device 33 having the address obtained by referring to the control table.

That is, for example, if an attempt is made to individually control the operation of each load L in a place where there are a large number of loads L such as a conference room, a large number of switches S ₀ are required, and the occupied space of the operation terminal 31 increases. There is. Here, if group control or pattern control is performed, it is possible to control individual operations of the plurality of loads L with a single switch operation.

  Here, in order to perform group control, it is necessary to set in advance which loads L are to be controlled in advance, and in order to perform pattern control, which loads L are to be controlled in what state is set in advance. There is a need to. In the monitoring control device 1 described in the following embodiment, an operation mode for controlling a load in response to an operation of an operation input unit associated with the display content of the display panel, and load control (contents of group control and pattern control) ) Can be switched to a setting mode for performing settings related to.

  Below, operation | movement of the above-mentioned remote monitoring control system is demonstrated easily.

  The transmission unit 30 always performs polling to periodically transmit a transmission signal whose terminal address is changed cyclically to the signal line Ls. The transmission signal includes a start pulse indicating the start of signal transmission, mode data indicating the signal mode, address data for transmitting a terminal address for calling the operation terminal 31 and the control terminal 33 separately, and for controlling the load L. Control data (including a load number) for transmitting control data, checksum data for detecting a transmission error, and a signal return period that is a time slot for receiving a return signal from the operation terminal 31 or control terminal 33 Bipolar signals are used.

  When a monitoring input by a switch operation or the like is generated in any of the operation terminals 31, the operation terminal 31 sends an interrupt signal synchronized with the start pulse of the transmission signal to the signal line Ls. The operation terminal 31 that has generated the interrupt signal enters a latch state in which the interrupt flag is set. On the other hand, when the transmission unit 30 detects the interrupt signal, it transmits a transmission signal in which the mode data is the search mode. When receiving the search mode transmission signal, the operation terminal device 31 in the latched state returns the terminal address in the signal return period, and the transmission unit 30 receiving the terminal address latches the operation terminal device 31 of the terminal address. It is confirmed that the operation terminal 31 has generated the interrupt signal by transmitting a transmission signal for requesting the return of the state and confirming whether the state is a latched state. If it is confirmed that the operation terminal 31 has generated the interrupt signal, a transmission signal for releasing the latch state is transmitted, and the latch state of the operation terminal 31 is released.

  When the transmission unit 30 receives a request from the operation terminal 31 through the above-described operation, the transmission unit 30 requests the control terminal 33 associated with the operation terminal 31 to control the load L according to the control table. Next, a transmission signal for confirming the state of the load L to be controlled is sent out, and the load state is returned from the control terminal 33. The load state received from the control terminal 33 is confirmed by the transmission unit 30, and if the current load state is off, a transmission signal having a content that reverses the load state to on is transmitted to the operation terminal 31 that has received the monitoring input. At the same time, a transmission signal having the same content is transmitted to the control terminal 33. In addition, the transmission signal of the content which controls the control terminal 33 is transmitted also to the operation terminal 31 in order to reflect in display states, such as the indicator lamp for the on-off display provided in the operation terminal 31. Upon receiving the transmission signal indicating the load state, the control terminal 33 returns a reception confirmation.

The remote monitoring and control system described above, when the switch S ₀ of the operation terminal 31 is operated, the address of the switch S ₀ (terminal address + load number) is collated with the control table in the transmission unit 30, switches S ₀ A transmission signal for instructing control of the load L is transmitted from the transmission unit 30 to the control terminal 33 connected to the load L for which the correspondence relationship is set. By such an operation, the on / off information of the switch S ₀ can be reflected in the control of the load L.

(Embodiment 1)
As shown in FIG. 3, the monitoring control device 1 of 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 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 monitoring control device 1 includes a communication circuit 11 that is connected to a signal line Ls connected to the transmission unit 30 and that transmits and receives a transmission signal (communication command). The communication circuit 11 is connected to a main microcomputer 12 as a control unit, and the main microcomputer 12 operates according to a program and data written in a flash memory 13 provided as a built-in memory of the monitoring control device 1. In the flash memory 13, at least an address as the operation terminal 31 is written.

  Further, the flash memory 13 has an area for copying data of at least a memory card MC (see FIG. 6) made of an SD memory card (registered trademark). The memory card MC is introduced from an insertion slot 81 (see FIG. 6) opened in the side surface of the panel case described later, and is detachably attached to the socket 4. This memory card MC stores setting information related to screen display of the display panel 2 and load control, and various settings are performed using the setting information, so that the setting operation can be simplified.

  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 monitoring control apparatus 1 of this embodiment is provided with the substantially rectangular parallelepiped-shaped body 5 as shown in FIG. 4, and embeds the rear part of the body 5 in the wall similarly to the embedded wiring apparatus. Mounted on the wall. This monitoring control device 1 is detachably mounted on the front side of the main unit 6 in such a manner that the rear part is fixed to the wall in a form of being embedded in the wall, and the front part protrudes forward from the wall surface. The panel unit 7 is separated (see FIG. 5). Below, the structure of the monitoring control apparatus 1 is demonstrated by making the upper and lower sides and right and left in the state which attached the monitoring control apparatus 1 to the wall into upper and lower left and right.

  Here, the internal circuit of the monitoring control device 1 is divided into a main unit 6 and a panel unit 7. In the present embodiment, the power supply circuit 10 (see FIG. 3) for supplying DC power to the internal circuit and the communication circuit 11 are provided on the main unit side, and other circuits (the display panel 2, the operation input unit 3, and the main microcomputer 12). Are provided on the panel unit 7 side.

  As shown in FIG. 5, the main unit 6 includes a main 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 61. The main body case 60 is provided, and a circuit board (not shown) on which various electrical components are mounted is housed in the main body case 60. The main unit 6 includes a power terminal portion T1 (see FIG. 1) to which a power supply power supply line is connected and a signal terminal portion T2 (see FIG. 1) to which a signal line Ls is connected 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. 3) 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.

  The mechanical switch is provided, for example, to forcibly disable the operation of the operation input unit 3. That is, when the mechanical switch is pressed, the operation of the operation input unit 3 is invalidated and it is possible to avoid erroneous operation of the operation input unit 3 when wiping and cleaning the front surface of the panel unit 7. When the mechanical switch is pushed again in this state, the operation of the operation input unit 3 is valid thereafter.

  Here, the monitoring control device 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 that can be mounted by arranging three wiring devices with unit dimensions standardized by JIS in the width direction (vertical direction) for embedded wiring devices. A dimension in which two mounting frames for a single station are connected in the left-right direction is referred to as “double station”. 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.

  Each of the main body case 60 and the panel case 70 is provided with attachment means for coupling the panel unit 7 to the main body unit 6 by engaging with each other. As shown in FIG. 5, the main body case 60 has a fitting recess 66 on the front surface, and includes locking holes 67 provided on the left and right side surfaces of the fitting recess 66 as attachment means. The depth of the fitting recess 66 is set so that the bottom surface is behind the wall surface, and two locking holes 67 are provided in parallel in the vertical direction.

  As shown in FIG. 6, the panel case 70 has a fitting protrusion 78 that protrudes on the back side and fits into the fitting recess 66, and is a locking piece provided on each of the left and right sides of the fitting protrusion 78. 79 is provided as attachment means. The locking piece 79 is provided at each position corresponding to the locking hole 67 in a state in which the fitting protrusion 78 is fitted in the fitting recess 66, and protrudes from the front end portion to the outside of the panel case 70. The locking claw 79a has a cantilever type snap fit shape that allows the locking claw 79a to be inserted into and removed from the locking hole 67. As a result, when the fitting protrusion 78 is fitted into the fitting recess 66, the locking piece 79 is inserted into the locking hole 67 by inserting the locking claw 79 a provided at the tip thereof into the locking hole 67. The panel unit 7 is mechanically coupled to the main unit 6.

  The insertion slot 81 for inserting / removing the memory card MC is the left side surface (right side surface as viewed from the back side) of the fitting protrusion 78 in the panel case 70, and the main unit 6 and the panel unit 7 are attached to the wall. It is formed at a position that fits in the wall in a state. Therefore, the memory card MC is attached and detached with the panel unit 7 removed from the main unit 6.

  Here, the panel unit 7 is formed such that the front-rear dimension in the left-right direction is substantially the same as that of the main unit 6, and the vertical dimension is set slightly smaller than that of the main unit 6. Therefore, the entire front surface of the main unit 6 is not covered with the panel unit 7 in a state where the panel unit 7 is mounted on the main unit 6, and the portion of the mounting piece 63 in which the plate mounting hole 65 is formed is the panel. The unit 7 is exposed on both the upper and lower sides. However, this exposed portion is hidden by attaching a decorative plate to the attachment piece 63. Here, the thickness dimension (the dimension in the front-rear direction) of the panel unit 7 is set so that the amount of protrusion from the wall surface of the decorative plate and the panel unit 7 is substantially the same in a state where the decorative plate is mounted.

  The panel unit 7 has a panel-side connector 80 (see FIG. 6) for connecting the main unit 6 on the back side (the front end surface of the fitting protrusion 78). The main unit 6 is connected to the panel-side connector 80. The main body side connector 68 (see FIG. 5) to be connected is provided on the front side (the bottom surface of the fitting recess 66), and the panel side connector 80 and the main body side connector 68 are connected to each other. The unit 7 is electrically connected to each other. Thus, the panel unit 7 operates by receiving power supply from the power supply circuit 10 via the main body side connector 68 and the panel side connector 80 when mounted on the main body unit 6.

  Here, at least one of the main body side connector 68 and the panel side connector 80 is a movable type that can be displaced within a predetermined range with respect to the body 5 within the plane along the front surface of the body 5 (displaceable in the vertical and horizontal directions). It consists of a stack connector. Accordingly, relative displacement between the main body side connector 68 and the panel side connector 80 due to variations in the dimensions of the main body case 60 and the panel case 70 and variations in the mounting positions of components (connectors) on the circuit board. Even if this occurs, the main unit 6 and the panel unit 7 can be reliably connected. In addition, as the main body side connector 68 and the panel side connector 80, those having a horizontally long shape in which a large number of contacts are arranged in the left-right direction are used.

  By the way, in the monitoring control device 1 of the present embodiment, as shown in FIG. 1, the panel unit 7 is attached to the main unit 6 according to the operation of the end operation unit provided in the panel unit 7. Energization control means 20 for controlling the energization state from the power supply circuit 10 to the main body side connector 68 is provided in the main body unit 6. Here, the operation input unit 3 is also used as the end operation unit, and the energization control unit 20 turns off the energization to the main body side connector 68 when a predetermined operation input is made in the operation input unit 3 and the panel. The power supply to the unit 7 is stopped. In FIG. 1, the main microcomputer 12 and its peripheral circuits in the panel unit 7 are illustrated as the control unit 21, and components not related to the following description are omitted.

  The energization control means 20 controls on / off of the energization switch 22 inserted between the power supply circuit 10 and the main body side connector 68. When the operation input unit 3 receives a predetermined operation input, the operation input unit In response to the end signal generated in step 3, the energization switch 22 is turned off. When the energization switch 22 is turned off, the power supply circuit 10 and the main body side connector 68 are disconnected, so that the power supply from the power supply circuit 10 to the main body side connector 68 is stopped and the power supply circuit 10 is connected to the main body side connector 68 and the panel side. The power supply to the panel unit 7 performed through the connector 80 is stopped. The energization control means 20 is realized using, for example, a microcomputer. The energizing switch 22 may be either a contact switch or a contactless switch.

  In the present embodiment, the end signal output from the operation input unit 3 is transmitted to the energization control means 20 in the main unit 6 via the control unit 21, and the control unit 21 includes the operation input unit 3. When an end signal is received from, end processing for safely stopping all operations of the panel unit 7 is executed. The energization control means 20 does not turn off the energization switch 22 immediately after receiving the end signal, but turns off the energization switch 22 with a time delay for the control unit 21 to execute the end process after receiving the end signal. To do. As a result, the power supply to the panel unit 7 can be stopped after the termination process is completed and the operation of the panel unit 7 is safely stopped, so that, for example, the power supply is cut off during data writing to the flash memory 13. Thus, it is possible to avoid such a situation that the data being written is corrupted. Alternatively, the control unit 21 may transfer an end signal to the energization control unit 20 as the final step of the end process, and the energization control unit 20 may turn off the energization switch 22 immediately upon receiving the end signal.

  The operation input unit 3 can perform an operation associated with the display on the display panel 2. For example, by selecting an end icon (graphic or symbol) from the menu screen displayed on the display panel 2, the end process is performed. Moves to the selection screen of whether or not to execute. When an icon for executing an end process is selected on this selection screen, an end signal is input from the operation input unit 3 to the control unit 21, and the control unit 21 executes the end process and also sends an end signal to the energization control unit 20. Forward. Here, in order to avoid the end process from being erroneously performed by the user operating the operation input unit 3 in a steady state, for example, when selecting an icon for executing the end process, a predetermined password is required to be input. It is desirable to have a configuration. The operation input for generating the end signal in the operation input unit 3 is not limited to that described above, and may be an operation input such as touching a plurality of predetermined icons for several seconds.

  According to the configuration described above, when it is necessary to remove the panel unit 7 from the main unit 6 at the time of maintenance of the monitoring and control apparatus 1, an operation input for generating the end signal is performed in the operation input unit 3 in advance. Thus, the power supply to the panel unit 7 can be stopped in advance before the panel unit 7 is removed. Therefore, when the panel unit 7 is energized, the panel unit 7 is removed and the connection between the connectors 68 and 80 is released, so that it is possible to avoid the occurrence of noise such as a surge current. As a result, when the panel unit 7 is removed, it is possible to avoid a problem that the panel unit 7 or the main unit 6 is damaged due to noise such as surge current.

  Further, by stopping energization from the power supply circuit 10 to the main body side connector 68 before removing the panel unit 7, the main body side connector 68 in the energized state is exposed to the outside when the panel unit 7 is removed. Can be prevented. For this reason, it is possible to prevent a failure of the main unit 6 due to a foreign matter adhering to the main body side connector 68 in the energized state and a current flowing through the foreign matter.

  Further, as described above, the memory card MC is attached / detached with the panel unit 7 removed from the main unit 6, so that the memory card MC is not attached / detached while power is supplied to the panel unit 7. Therefore, when the memory card MC is attached / detached, noise such as surge current due to the voltage applied to the socket 4 can be prevented, and the memory card MC can be prevented from being broken due to the noise.

  By the way, in this embodiment, the main body unit 6 is provided with detection means 23 for detecting that the panel unit 7 is attached to the main body unit 6, and the energization control is performed after the detection means 23 detects the attachment of the panel unit 7. A configuration in which the means 20 starts supplying power to the panel unit 7 is adopted.

  The main body unit 6 has a detection power source 24 that is energized when the two connectors 68 and 80 are connected to the detection circuit Le connected to the panel-side connector 80 in the panel unit 7. Detects the attachment of the panel unit 7 by monitoring the potential at the connection point between the detection power supply 24 and the main body side connector 68.

  More specifically, here, of the contacts of the main body side connector 68 and the panel side connector 80, at least one pair of contacts that are paired with each other (contact each other) is set as the detection pins P1a and P1b, and the main unit 6 side The detection pin P1a is connected to the detection power source 24, and the detection pin P1b on the panel unit 7 side is connected to the detection electric circuit Le. The detection power supply 24 has a positive potential point Vc connected to the detection pin P1a via a pull-up resistor. Further, the end of the detection electric circuit Le opposite to the detection pin P1b is connected to the circuit ground. The detection means 23 is connected to a connection point between the detection power supply 24 and the main body side connector 68 (detection pin P1a), and monitors the potential at the connection point as a detection input. In FIG. 1, a contact for ground connection (connection between circuit grounds) between the main unit 6 and the panel unit 7 is not shown.

  Therefore, if the detection input is equal to or higher than the specified value (H level), the detection unit 23 determines that the panel unit 7 is not attached because the detection pins P1a and P1b are not connected to each other. On the other hand, if the detection input is less than the specified value (L level), it is determined that the panel unit 7 is mounted because the detection pins P1a and P1b are connected to each other. When the detection means 23 determines that the panel unit 7 is attached, the energization control means 20 receives the start signal from the detection means 23 and turns on the energization switch 24. When the energization switch 24 is turned on, the energization from the power supply circuit 10 to the main body side connector 68 is started, so that the power supply from the power supply circuit 10 to the panel unit 7 is started through the main body side connector 68 and the panel side connector 80. In addition, the detection means 23 is implement | achieved using a microcomputer etc., for example.

  With this configuration, even when the power supply from the power supply circuit 10 to the main body side connector 68 is stopped when the panel unit 7 is removed, the power supply to the main body side connector 68 is automatically installed by reattaching the panel unit 7 thereafter. The power supply to the panel unit 7 can be started again. Moreover, when the panel unit 7 is attached to the main unit 6, the connection between the power supply circuit 10 and the main body side connector 68 is cut off until the connection between the connectors 68 and 80 is detected by the detecting means 23. The panel side connector 80 can be connected to the main body side connector 68 in a non-energized state. As a result, when the panel unit 7 is mounted, the contacts of the connectors 68 and 80 come into contact with each other with the relative positions of the connectors 68 and 80 shifted, or each connector 68 and 80 has a contact for each contact. Even if there is a variation in the timing of contact with the contacts of the other connectors 68 and 80, an abnormal current does not flow, and there is no time difference in the timing of starting energization between the circuits.

  The power supply circuit 10 of the main unit 6 has a voltage value for the panel unit 7 as in the case of supplying different power sources to the main microcomputer 12 and its peripheral circuits (interface circuit, etc.), for example. There are cases where multiple systems of power supplies with different power are supplied. In such a case, it is desirable to provide a configuration in which the energization switch 24 is provided on each power supply path, and the energization control means 20 controls each energization switch 24 individually. As a result, a time difference (time lag) can be given to the timing of starting energization for each power supply. For example, after energizing the main microcomputer 12, it is possible to start energizing its peripheral circuits with a delay. Become.

  Further, in the present embodiment, the LED 77 provided in the panel unit 7 for displaying the position of the monitoring control device 1 is also used as a lighting display unit that indicates an energization state of the panel unit 7. That is, since the LED 77 is constantly lit by receiving power supply from the power supply circuit 10 during energization from the power supply circuit 10 to the panel unit 7, the energization state to the panel unit 7 is determined by the lighting state of the LED 77. Can be confirmed. Therefore, when removing the panel unit 7, the operator can know that the power supply to the panel unit 7 has stopped because the LED 77 is turned off, so that the power supply to the panel unit 7 is surely stopped. After that, the panel unit 7 can be removed. Here, while the control unit 21 is executing the end process, the lighting pattern of the LED 77 may be changed (for example, blinked) to notify the operator that the end process is being executed.

(Embodiment 2)
As shown in FIG. 7, the monitoring control apparatus 1 according to the present embodiment is provided with an end switch SW including a push button switch as an end operation unit of the panel unit 7 separately from the operation input unit 3, and operates the end switch SW. This is different from the monitoring control device 1 according to the first embodiment in that an end signal is generated according to the above.

  The operation switch 82 of the end switch SW is provided on the right side surface of a portion of the panel case 70 that is in front of the front surface of the main unit 6 when the panel unit 7 is attached to the main unit 6. An end signal is generated when is pressed. Therefore, when the operator removes the panel unit 7 from the main unit 6, the operator does not have to perform a troublesome operation with the operation input unit 3 by grasping the portion of the panel case 70 where the operation element 82 is provided. In addition, the power supply control means 20 can stop the power supply to the panel unit 7 before the connection between the connectors 68 and 80 is released.

  Here, the position where the operation element 82 is provided is not limited to the right side surface as long as it is a circumferential surface intersecting with the front surface of the panel case 70. However, in the present embodiment, the panel unit 7 and the main unit 6 are coupled by engaging the locking pieces 79 provided on the left and right side surfaces of the fitting protrusion 78 with the locking holes 67 of the main unit 6. Therefore, when the operator normally removes the panel unit 7, the operator grasps both the left and right sides of the panel case 70 in order to release the engagement between the locking piece 79 and the locking hole 67. Therefore, if the operator 82 is on the left or right side surface of the panel case 70, there is an advantage that the operator 82 can be operated naturally when the operator holds the panel case 70.

  As another configuration example of the present embodiment, the mechanical connection between the main unit 6 and the panel unit 7 can be released by operating a release button, and an operator of the end switch SW is connected to the release button. It can be considered that 82 is also used. Specifically, for example, the locking piece 79 of the panel unit 7 is interlocked with the release button so that the locking claw 79a is removed from the locking hole 67 when the release button is operated, and the main body until the release button is operated. The structure between the unit 6 and the panel unit 7 is not released. In such a structure, the release button must be operated in order to remove the panel unit 7. Therefore, the operation switch 82 of the end switch SW that is also used as the release button is necessarily operated. That is, when the panel unit 7 is removed, the operation element 82 is always operated, and the power supply control means 20 stops the power supply to the panel unit 7, and the power supply to the panel unit 7 is not stopped. It is possible to prevent the panel unit 7 from being removed.

  The end switch SW is not limited to the push button switch, and may be a slide switch for sliding the operation element 82, for example.

  Other configurations and functions are the same as those of the first embodiment.

  By the way, in each of the above-described embodiments, the monitoring control device 1 in which the main unit 6 is embedded is described. However, the main unit 6 is not limited to the embedded type, and is fixed to the wall so that the back surface faces the wall. The present invention may be applied to the monitoring and control apparatus 1 including the exposed main body unit 6.

1 Monitoring and Control Device 2 Display Panel 3 Operation Input Unit (End Operation Unit)
6 Main unit 7 Panel unit 10 Power supply circuit 11 Communication circuit 12 Main microcomputer (control unit)
20 Energizing control means 22 Energizing switch 68 Main body side connector 77 LED (lighting display part)
80 Panel side connector 82 Controller SW End switch

Claims (5)

  Used in a remote monitoring and control system that performs load monitoring control by communication, it is divided into a main unit fixed to the wall and a panel unit that is detachably mounted on the front side of the main unit. A power supply circuit that outputs power and a communication circuit that transmits a communication command with a plurality of loads as monitoring control targets, and the panel unit receives a display panel capable of displaying characters and figures, and accepts an operation input by a user. A monitoring control device comprising: an operation input unit; and a control unit that causes the display panel to perform load control according to the operation input of the operation input unit associated with the display content of the display panel and screen display according to the load state The panel unit has a connector electrically connected to a connector provided on the front side of the main unit and a predetermined operation input. And a power supply circuit that receives power from both power supply connectors when both are attached to the main unit, and the main unit responds to a predetermined operation input at the end operation portion when the panel unit is mounted. And a power supply control means for stopping power supply from the power supply circuit to the panel unit.   The end operation unit includes an end switch provided with an operation element on one surface exposed when the panel unit is mounted on the main body unit, and the energization control unit is operated by an operation element of the end switch. The monitoring control device according to claim 1, wherein power supply to the panel unit is stopped in response to an operation input due to being performed.   The monitoring control apparatus according to claim 1, wherein the operation input unit is also used as the end operation unit.   The panel unit has attachment means that is mechanically coupled to the main body unit and is released by operation of a release button, and the release button is provided on a peripheral surface of the panel unit that intersects the front surface. The monitoring control apparatus according to claim 2, wherein the operation element of the end switch is also used as a release button.   The monitoring control apparatus according to any one of claims 1 to 4, wherein the panel unit includes a lighting display unit that is turned on in response to power supply from the power supply circuit.

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