JP2020160864A - Receiver for disaster prevention monitoring system - Google Patents

Abstract

To provide a receiver for a disaster prevention monitoring system capable of transmitting and receiving information by wireless communication between the receiver and an external terminal.SOLUTION: A receiver for a disaster prevention monitoring system includes a housing consisting of a metal box-shaped body (20), and a metal front panel (10) that has an operation display that allows input operation and is attached so as to close an opening of the box-shaped body. An opening is formed in the front panel, and a resin panel (30) having an information display unit corresponding to the opening is attached to a back surface of the front panel. An operation display board (31) provided with a circuit for controlling the operation display is mounted on the back surface of the resin panel. The operation display board is arranged on the back surface of the resin panel so as to create a space between the operation display board and the edge of the opening. Electronic components for communication (28a) having a wireless communication function is mounted on a control board. An antenna board (32) connected to the electronic components for communication via a cable is arranged in the space of the resin panel.SELECTED DRAWING: Figure 4

Description

The present invention relates to a receiver used in a disaster prevention monitoring system (including a fire notification system) such as a fire receiver that receives a signal from a fire detector, a transmitter, or the like to warn of a fire, and particularly to a radio in the receiver. Regarding the technology that is effective for mounting communication antennas.

Conventionally, a fire receiver that receives a signal from a fire detector or a transmitter to warn of a fire has an information display unit or information that displays the location (district) of an event such as a fire that has occurred and the content of the event. It is equipped with a 7-segment display that displays the above with simple numbers and symbols, and a speaker that emits an alarm sound. In addition, fire receivers are often installed in special rooms such as disaster prevention centers and management rooms, and wireless communication is used to notify the person in charge at a location away from the location where the fire receiver is installed. No function was provided.

Some receivers of conventional fire alarm systems have a function of displaying the status of the receiver on a display device connected by wire using a communication cable. Further, by providing a communication connection unit (connector) in the receiver, connecting the first wireless communication device to the connector, and connecting the second wireless communication device to the management terminal, the receiver and the management terminal can be connected. There is an invention in which settings can be made for a receiver and operation history information of the receiver can be transmitted to a management terminal by wireless communication between the two (Patent Document 1).

Japanese Unexamined Patent Publication No. 2016-11265

The housing of the fire receiver is generally a metal housing. Therefore, if a wireless communication module is built into the housing so that the fire receiver can have wireless communication, the housing becomes an electromagnetic shield and the strength of the transmitted and received radio waves decreases, making it impossible to send and receive accurate information. There is a problem.
On the other hand, in the communication system (fire alarm system) described in Patent Document 1, a communication connection portion (connector) is provided in the housing of the receiver, and a wireless communication device is connected to the connector. Therefore, it is possible to transmit and receive information while avoiding a decrease in the strength of radio waves due to the housing. However, in the system of Patent Document 1, when it is desired to perform wireless communication, a wireless communication device must be connected each time, which is troublesome. Further, if it is desired to keep the wireless communication device connected at all times, there is a problem that it is necessary to secure a dedicated installation space.

The present invention has been made in the background as described above, and an object of the present invention is to connect a wireless communication device or secure an installation space for the wireless communication device in the vicinity of a receiver each time wireless communication is performed. An object of the present invention is to provide a receiver for a disaster prevention monitoring system capable of transmitting and receiving information by wireless communication between a receiver and an external terminal without any trouble.
Another object of the present invention is to provide a receiver for a disaster prevention monitoring system capable of directly notifying the occurrence of an event by wireless communication from the receiver to a mobile terminal.

In order to solve the above problems, the invention according to the present application is
A metal box-shaped body with a built-in control board that can detect the occurrence of an event in response to a signal from a terminal device installed in the monitored area, and the occurrence and event of the detected event. It is provided with a housing composed of a metal front panel having an operation display unit capable of displaying information corresponding to the above and being capable of input operation and attached so as to close the opening of the box-shaped main body.
An opening is formed in the front panel.
A resin panel having an information display unit corresponding to the opening is attached to the front panel.
In a receiver for a disaster prevention monitoring system in which an operation display board provided with a circuit for controlling the operation display unit is mounted on the back surface of the resin panel.
The operation display board is arranged on the back surface of the resin panel so as to create a space between the operation display board and the edge of the opening.
A communication electronic component having a wireless communication function is mounted on the control board.
An antenna substrate connected to the communication electronic component via a cable is disposed in a portion corresponding to the space of the resin panel.

According to the receiver having the above configuration, since there is no metal front panel in front of the antenna board connected to the electronic component for communication (wireless communication module), the front panel serves as an electromagnetic shield and the radio wave strength. Therefore, even if a wireless communication device is provided inside the receiver, wireless communication can be performed with a device external to the receiver.
In addition, since a wireless communication device is provided inside the receiver, it is not necessary to connect the wireless communication device or secure an installation space for the wireless communication device in the vicinity of the receiver each time wireless communication is performed. , Information can be transmitted and received by wireless communication between the receiver and an external terminal. Furthermore, the occurrence of an event can be directly notified from the receiver to the mobile terminal by wireless communication.

Here, preferably, the front panel is attached to the side portion of the box-shaped body so as to be openable and closable by a hinge.
The space is provided between the edge of the opening on the side close to the hinge and the end of the operation display board.
The antenna substrate is mounted on the back surface of the resin panel.
According to this configuration, the communication electronic component (wireless communication module) is arranged at a portion close to the hinge, so that the communication electronic component arranged inside the receiver main body and the back surface of the front panel The length of the cable connecting to the arranged antenna substrate can be shortened. Further, since the wiring location of the antenna is arranged on the hinge side (position on the back side), it does not interfere with the work when the front panel of the receiver is opened to perform the connection work or the function check of the internal circuit.

Further, preferably, the antenna board is a vertically long printed wiring board on which a pattern for receiving radio waves is formed, and the space is provided over a predetermined range along the side edge of the opening, and the space is provided in the space. The antenna substrate is arranged.
According to such a configuration, it is possible to easily secure a space for arranging the vertically long antenna substrate.

Further, preferably, the power supply is located at the bottom of the box-shaped body.
The communication electronic component is mounted on the upper front surface of the control board at a position closer to the hinge than the center.
According to the receiver having the above configuration, the electronic component for communication (wireless communication module) is arranged at a position away from the power supply device, so that the influence of the electromagnetic noise generated by the power supply device is used for communication. Electronic components are less likely to be received, and good wireless communication can be performed.

Further, preferably, the operation display board is arranged on the back surface of the resin panel so as to form a gap between the operation display board and the upper edge of the opening in front view.
The communication electronic component is mounted on the control board so that the wireless communication module and the chip antenna are provided on the same board, the chip antenna is in an upward position, and the chip antenna is located behind the gap. To be.
According to this configuration, since there is no metal front panel in front of the chip antenna mounted together with the electronic components for communication, the front panel does not become an electromagnetic shield and reduce the radio wave strength, so that it is inside the receiver body. Wireless communication can be performed with an external device via the arranged chip antenna.

Also, preferably, one end of the cable is welded to the antenna substrate and the other end is provided with a connector.
The communication electronic component is provided with a terminal to which the connector provided at the end of the cable can be connected.
According to such a configuration, the antenna board can be detachably connected to the communication electronic component (wireless communication module), so that the antenna board can be provided or not provided as needed.

According to the receiver for a disaster prevention monitoring system of the present invention, even if a wireless communication device is provided inside the receiver, wireless communication can be performed with a device outside the receiver. Therefore, information by wireless communication between the receiver and an external terminal is not required to connect the wireless communication device or secure the installation space of the wireless communication device in the vicinity of the receiver each time wireless communication is performed. You can send and receive. In addition, there is an effect that the occurrence of an event can be notified from the receiver to the mobile terminal by wireless communication.

It is a front view which shows the front panel of one Embodiment of the fire receiver which is effective by applying the receiver which concerns on this invention. It is a rear view which shows the structural example of the control function part provided in the main body which comprises the fire receiver of embodiment. It is a rear view which shows the structural example of the operation display panel attached to the back of the front panel which comprises the fire receiver of embodiment. It is a rear view which shows the state which attached the operation | display board to the operation display panel attached to the back of the front panel. (A) and (B) are a plan view and a side view which show the structural example of the antenna board mounted on the back surface of the front panel in the fire receiver of embodiment.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
FIG. 1 shows an example of a front panel 10 of a fire receiver to which the present invention is applied. The fire receiver shown in Fig. 1 is installed in the disaster prevention center or central control room of the building, receives fire signals from detectors and transmitters installed in the building, and sounds the district acoustic device to cause a fire. In addition to being notified by sound, it has a function of notifying the occurrence of a fire by displaying a lamp or the like provided on the front panel 10 of the fire receiver.

The front panel 10 of this embodiment is a metal panel made of sheet metal, and the portion surrounded by the solid line 10a is an opening formed in the metal front panel 10, and various types of openings 10a are formed. A resin operation display panel 10A for performing display and input operations is provided.
As shown in FIG. 1, on the metal frame portion of the front panel 10 of the fire receiver, there is a district display window 12 for a fire alarm line that displays a line that triggered a fire or a line that has a broken sensor wire, and a fire. A district display window 13 for a smoke-proof line is provided to display the place where the fire has occurred and the place where the smoke-proof terminal has been operated.
The district display windows 12 and 13 have a plurality of lamps for notifying the occurrence of a fire or the operation of a smoke prevention terminal (smoke exhaust damper, smoke prevention shutter, etc.) for each district line, and the district name corresponding to each lamp. Alternatively, it is composed of a display column (display plate) indicating the installation location in characters.

On the other hand, the resin operation display panel 10A has a main operation unit 11 that displays the operating status of the fire receiver such as the power-on status, fire alarm, and input of the transmitter signal by lighting various lamps, and a fire outbreak. Information such as a speaker 14 for informing the receiver, an acoustic operation unit 15 equipped with a push button for stopping the sound of the receiver and a bell (district sound), the operation mode of the receiver, and the result when the battery test described later is carried out. Information display unit 16 consisting of a dot matrix type VFD (vacuum fluorescent display), etc., display operation unit 17 having a shift button for changing the display content, information display unit for fire content / abnormality content of the receiver, etc. An information operation unit 18 having an information button 18a and an information lamp 18b for displaying and confirming on the 16 is provided. The information display unit 16 may be a display device other than VFD, such as an LCD (liquid crystal display).

Further, at the lower part of the front panel 10 of the fire receiver, there is a battery test switch button 19A for instructing the start of the battery test, a fire test switch button 19B for instructing the start of the fire test, and a test recovery button for instructing recovery from the test. 19C, an internal operation unit 19 having a fire recovery button 19D for instructing recovery from a fire test is provided. The front surface of the internal operation unit 19 is covered with a transparent resin panel P so as to prevent accidental operation.
Further, although not shown in FIG. 1, the control board that drives each display unit (11, 16, 18) and the speaker 14 receives a fire reception by receiving a command input from the operation unit (11, 17, 18). It is installed inside the chassis of the machine. Further, a backup power supply device that supplies power to the control board and the like in the event of a power failure of the commercial AC power supply and a backup power supply test device for testing the standby power supply device are provided inside the housing of the fire receiver.

FIG. 2 shows a configuration example of a control function unit provided in the main body 20 of the fire receiver.
The main body 20 has a box shape with one side (front surface) open, and the front panel 10 is attached to the side thereof so as to be openable and closable by hinges 21A and 21B. The front panel 10 and the main body 20 form a housing for a receiver. To. The main body 20 is also made of metal.
As shown in FIG. 2, the main body 20 includes a control board 22 composed of a printed wiring board on which electronic components such as LSIs such as a microcomputer (CPU) and memory, ICs, resistance elements, and capacitors are mounted, and an AC voltage. A power supply device 23 made of an AC-DC converter or the like for converting the voltage into a DC voltage and a standby power supply device 24 made of a battery or the like are provided, and the upper end of the control board 22 is inside the opening 10a of the front panel 10. It is arranged so as to be located.

Further, a vertically long opening 20a for inserting a cable for inputting a signal from a sensor or the like is formed on the rear wall of the main body 20. A terminal block 25 to which the connector at the end of the cable inserted through the opening 20a is connected is provided on one side (left side in the drawing) of the control board 22, and the hinge of the control board 22 is provided. A terminal block to which a connector at the end of a cable (twisted pair cable) responsible for transmitting signals to the operation / display board on the back surface of the front panel 10 is connected to the side portion (right side in the figure) on the side closer to 26 is provided. Further, at the lower part of the control board 22, a terminal block 27 to which the connector at the end of the cable connecting the power supply device 23 and the standby power supply device 24 and the control board 22 is connected is provided.

Further, in this embodiment, a sub-board 28 on which a wireless communication module 28a capable of wireless communication conforming to, for example, a wireless LAN standard is mounted is mounted on the upper side of the control board 22 and near the hinge 21. Then, on the sub-board 28, a terminal 28b to which the connector 34 at the end of the cable 33 (see FIG. 5) connecting the wireless communication module 28a and the antenna board 32 on the front panel 10 side, which will be described later, is connected is provided. Has been done.
A chip antenna 28c for a wireless communication module is mounted on the upper portion of the sub-board 28. Therefore, the occurrence of the event can be directly notified from the receiver to the external mobile terminal by wireless communication.

Although not shown, the control board 22 has a serial communication port (serial I / O) that outputs event history information such as a fire detection signal stored in the memory to an external personal computer or the like via a communication cable. It is provided.
Further, in FIGS. 2 and 4, reference numeral 29 is attached to a ground wire connecting the front panel 10 and the main body 20, and the ground wire 29 is on the hinge side (position on the back side). The length is set so as to have a margin so as not to interfere with the opening and closing of the front panel 10.

As described above, the sub-board 28 on which the wireless communication module 28a and the chip antenna 28c are mounted is mounted on the upper part of the control board 22, and as described above, the upper end portion of the control board 22 is the opening of the front panel 10. Since it is arranged so as to be located inside the 10a, the metal portion of the metal front panel 10 does not exist in front of the chip antenna 28c. Further, an operation / display board mounted on the back surface of the front panel 10 exists in front of the chip antenna 28c, but since the operation / display board is made of resin, it does not serve as an electromagnetic shield. As a result, it is possible to prevent the front panel 10 from acting as an electromagnetic shield and weakening the strength of the radio wave of wireless communication emitted from the chip antenna 28c.
Moreover, in the present embodiment, as described below, since the antenna board 32 provided on the front panel 10 side is connected to the wireless communication module 28a via the cable 33, wireless communication can be reliably performed. ..

Next, the configuration of the back surface of the front panel 10 will be described with reference to FIGS. 3 to 5.
In the fire receiver of the present embodiment, on the back surface of the front panel 10 made of sheet metal, the plate portion 30a as shown in FIG. A resin operation display panel 30 having a reinforcing rib 30c is attached, and as shown in FIG. 4, a printed wiring board on which an LSI as a sub CPU, an indicator lamp, a push button switch, and the like are mounted. An operation display board 31 made of a board is attached.
The operation display board 31 is arranged so that the side end comes to a position slightly distant from the outer frame 30b on the hinge side (left side in the drawing) of the operation display panel 30, whereby the operation display board 31 can be operated with the outer frame 30b. It is configured so that a space is generated between the display board 31 and the display board 31.

The front surface of the operation display panel 30 is covered with a resin sheet such as a membrane sheet on which a mark such as a push button is printed. Further, as shown in FIG. 3, the operation display panel 30 has a rectangular opening 30d facing the VFD constituting the information display unit 16, a circular rib 30e with which the speaker 14 is engaged, and various display lamps. A plurality of small circular openings 30f facing each other are provided. Then, the operation display panel 30 is joined to the back surface of the front panel 10 and fixed by a screw inserted into a screw hole 30 g formed in the peripheral edge portion.

In this embodiment, the elongated strip-shaped antenna board 32 as shown in FIG. 5 is mounted in the space between the outer frame 30b of the operation display panel 30 and the operation / display board 31. There is. The antenna board 32 is formed by soldering one end of a cable 33 to a resin printed wiring board having a predetermined pattern formed of a conductive layer serving as an antenna on the surface thereof, and the other end of the cable 33 is the wireless communication module. A connector 34 that can be connected to the terminal 28b on the sub-board 28 on the main body 20 side on which the 28a is mounted is provided. Further, a protective tape 35 is attached to the soldered portion at the tip of the cable 33 to prevent peeling. The cable 33 has the same shape as the ground wire 29 shown in FIGS. 2 and 4, and has a space between the front panel 10 and the main body 20 on the hinge side so as not to interfere with the opening and closing of the front panel 10. It is set to a length with and is connected.

Further, in this embodiment, the operation display panel 30 is placed on the back surface of the front panel 10 so that the outer frame 30b on the hinge side of the operation display panel 30 substantially coincides with the edge of the opening 10a of the front panel 10. It is configured to be worn. Therefore, as described above, when the antenna board 32 is mounted in the space between the outer frame 30b and the operation display board 31, the metal portion of the metal front panel 10 does not exist in front of the antenna board 32. It becomes.
Moreover, although the plate portion 30a of the operation display panel 30 mounted on the back surface of the front panel 10 exists in front of the chip antenna 28c, the operation display panel 30 is made of resin and therefore does not serve as an electromagnetic shield. As a result, it is possible to prevent the front panel 10 from acting as an electromagnetic shield and weakening the strength of the radio wave of wireless communication that jumps into the antenna substrate 32.

Further, the operation / display board 31 mounted on the back surface of the front panel 10 via the operation display panel 30 is a printed wiring board, and is provided with a ground layer made of a conductive layer to which a ground potential is applied almost entirely. ing. Therefore, if an antenna pattern is formed on the operation display board 31, or if the antenna board 32 is arranged behind the operation / display board 31 such as in the vicinity of the control board 22 in the main body 20, the operation display is displayed. The ground layer of the substrate 31 acts as an electromagnetic shield and weakens the radio wave intensity that jumps into the antenna substrate 32.
On the other hand, according to the configuration as in the above embodiment, the operation display board 31 does not exist in front of the antenna board 32, and the antenna pattern is formed on a board different from the operation display board 31. It is possible to prevent the radio waves emitted from the substrate 32 from being blocked or weakened.

As described above, in the present embodiment, both the antenna substrate 32 and the chip antenna 28c on the sub-board 28 on which the wireless communication module 28a is mounted are located inside the opening 10a of the metal front panel 10. In addition, since spaces are provided on the sides and above the operation display board 31 on the back surface of the front panel 10, the metal front panel 10 and the ground layer of the operation / display board 31 serve as an electromagnetic shield for the antenna. It is possible to avoid weakening the strength of the radio wave of the wireless communication emitted from.

Further, since the sub-board 28 and the antenna board 32 on which the wireless communication module 28a is mounted are arranged near the hinge 21 which is the center of rotation of the front panel 10, the sub-board 28 and the antenna board 32 are connected to each other. The length of the cable 33 can be shortened. In addition, since the antenna wiring location is located on the hinge side (at the back side), it interferes with the work when opening the front panel of the receiver to perform wiring work or checking the function of the internal circuit. It doesn't become.
Further, in this embodiment, the power supply device 23 that easily generates noise is arranged in the main body 20, that is, the lower part of the housing, and the sub-board 28 and the antenna board 32 on which the wireless communication module 28a is mounted are arranged in the upper part of the housing. Since it is provided, there is an advantage that the wireless communication module 28a is not easily affected by noise generated from the power supply device 23.

From the viewpoint of avoiding the influence of noise, it is also conceivable to arrange the power supply device 23 in the upper part of the housing and arrange the sub-board 28 and the antenna board 32 on which the wireless communication module 28a is mounted in the lower part of the housing. However, since the power supply device 23 generates a lot of heat, by arranging the power supply device 23 at the lower part of the housing and arranging the control board 22 having a relatively large space on it, convection occurs in the housing. It is desirable that the power supply device 23 is arranged at the lower part of the housing because the power supply device 23 can be raised and the cooling efficiency can be improved. Therefore, it can be said that the most suitable arrangement is to dispose the wireless communication module 28a in the upper part of the housing far from the power supply device 23 which is a noise source.

Further, in the above embodiment, the antenna board 32 is arranged vertically with a space provided between the operation display board 31 on the back surface of the front panel 10 and the side outer frame 30b of the operation display panel 30. The antenna board 32 may be arranged sideways by providing a space between the operation display board 31 and the upper outer frame of the operation display panel 30.
Further, in the receiver of the model which does not provide the VFD constituting the information display unit 16, the opening 30d formed in the operation display panel 30 is covered with the membrane sheet, and the opening is shown by the alternate long and short dash line in FIG. The antenna substrate 32 may be arranged at the position of 30d. Further, in the above embodiment, the chip antenna 28c is mounted on the sub-board 28 on which the wireless communication module 28a is mounted, and the metal portion of the metal front panel 10 does not exist in front of the chip antenna 28c. In a receiver arranged in a space having a good radio wave environment, it is possible to omit the attachment of the antenna substrate 32.

Although the invention made by the present inventor has been specifically described above based on the embodiment, the present invention is not limited to the above embodiment. For example, in the above embodiment, the antenna board 32 is mounted on the back surface of the front panel 10, but the antenna board 32 is on the main body 20 side if it is located at the same position as in the above embodiment when viewed from the front. It may be attached to.
Further, in the above description, the case where the present invention is applied to a P-type fire receiver has been described as an example, but the present invention is not limited to the P-type fire receiver, and an R-type fire receiver and other monitoring systems can be configured. It can be applied to various receivers.

10 Front panel (housing)
11 Main operation unit 12 District display window for fire alarm line 13 District display window for smoke-proof line 14 Speaker 15 Sound operation unit 16 Information display unit (display device)
17 Display operation unit 18 Information operation unit 18a Information button (operation button)
18b Information lamp (information notification lamp)
19 Internal operation unit 20 Main body (housing)
21A, 21B Hinge 22 Control board 28 Sub board 28a Wireless communication module 28b Chip antenna 30 Operation display panel 31 Operation display board 32 Antenna board 33 Cable

Claims (6)

A metal box-shaped body with a built-in control board that can detect the occurrence of an event in response to a signal from a terminal device installed in the monitored area, and the occurrence and event of the detected event. It is provided with a housing composed of a metal front panel having an operation display unit capable of displaying information corresponding to the above and being capable of input operation and attached so as to close the opening of the box-shaped main body.
An opening is formed in the front panel.
A resin panel having an information display unit corresponding to the opening is attached to the front panel.
A receiver for a disaster prevention monitoring system in which an operation display board provided with a circuit for controlling the operation display unit is mounted on the back surface of the resin panel.
The operation display board is arranged on the back surface of the resin panel so as to create a space between the operation display board and the edge of the opening.
A communication electronic component having a wireless communication function is mounted on the control board.
A receiver for a disaster prevention monitoring system, characterized in that an antenna substrate connected to the communication electronic component via a cable is disposed in a portion corresponding to the space of the resin panel. The front panel is attached to the side of the box-shaped body so as to be openable and closable by a hinge.
The space is provided between the edge of the opening on the side close to the hinge and the end of the operation display board.
The receiver for a disaster prevention monitoring system according to claim 1, wherein the antenna substrate is mounted on the back surface of the resin panel. The antenna board is a vertically long printed wiring board on which a pattern for receiving radio waves is formed, and the space is provided over a predetermined range along the side edge of the opening, and the antenna board is arranged in the space. The receiver for a disaster prevention monitoring system according to claim 2, wherein the receiver is provided. The power supply is located at the bottom of the box-shaped body.
The receiver for a disaster prevention monitoring system according to claim 2 or 3, wherein the communication electronic component is mounted at a position closer to the hinge than the center of the upper front surface of the control board. .. The operation display board is arranged on the back surface of the resin panel so as to form a gap between the resin panel and the upper edge of the opening when viewed forward.
The communication electronic component is mounted on the control board so that the wireless communication module and the chip antenna are provided on the same board, the chip antenna is in an upward position, and the chip antenna is located behind the gap. The receiver for a disaster prevention monitoring system according to any one of claims 1 to 4, wherein the receiver is characterized by the above. One end of the cable is welded to the antenna substrate and the other end is provided with a connector.
The reception for a disaster prevention monitoring system according to any one of claims 1 to 5, wherein the communication electronic component is provided with a terminal to which the connector provided at the end of the cable can be connected. Machine.

Images