JP2005122538A - Industrial facility centralized management system - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an industrial facility centralized management system which ensures stable radio communication without being affected by electromagnetic noises and fading in industrial facilities, while effectively utilizing frequency channels used for radio transmission when information between an information detector and a centralized management part is transmitted by radio. <P>SOLUTION: The industrial facility centralized management system is provided with the information detector 11 which is arranged for each monitoring object and detects the detection information of the monitoring object, a plurality of radio slave units 10 which transmit each monitoring information by radio, a radio master unit 20 which receives the monitoring information through the radio slave units, and a centralized management part 40 which centrally manages the monitoring information thus received. The radio master unit is provided with a directive antenna 21 which is arranged for each the radio slave unit, an antenna switching part 23 which switches and selects an arbitrary directive antenna, a UWB radio communication part 24 which communicates with a radio slave unit corresponding to the arbitrary directive antenna by means of a UWB method through the arbitrary directive antenna, and a control unit 28 which controls the antenna switching part so as to switch and select the arbitrary directive antenna in response to a prescribed signal. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention is arranged for each monitoring target of industrial equipment such as a manufacturing line of a factory, for example, detects monitoring information such as monitoring information such as production progress information and abnormality alarm information of the manufacturing line, and each monitoring target The present invention relates to an industrial facility centralized management system that collects monitoring information using wireless communication and centrally manages the monitoring information to be monitored.

  Conventionally, such an industrial equipment centralized management system is arranged for each monitoring target of industrial equipment such as a production line, and monitoring information such as production progress information and abnormality alarm information of the manufacturing line, for example. A centralized management unit that collects monitoring information detected by each information detection unit using wired communication and centrally manages the monitoring target monitoring information. The department can centrally manage monitoring information such as production progress information and abnormality alarm information of each production line.

  According to such a conventional industrial equipment centralized management system, the centralized management unit can centrally manage the monitoring information of each monitoring target. Therefore, the user of this centralized management unit displays, for example, the centrally managed information on the screen. By displaying, it is possible to visually recognize the status of each monitoring target, for example, production progress information and abnormality alarm information of the production line.

  However, according to the above-described conventional industrial equipment centralized management system, monitoring information to be monitored detected by each information detection unit is transmitted to the centralized management unit through wired communication. When a monitoring target is added or changed due to a change or a change, the addition or change work related to the wire between the information detection unit and the central management unit that detects the monitoring information of the monitoring target is very troublesome.

  Therefore, in recent years, in order to cope with such a situation, it is considered that a communication method for transmitting monitoring information to be monitored between the information detection unit and the central management unit is performed by wireless communication instead of wired communication. Although the prior art using such wireless communication is not related to the technical field of industrial equipment centralized management system, the status information of the installation location is obtained from the built-in PHS slave at the installation location by PHS wireless communication. There is known a technical content of transmitting to a PHS base station and transmitting state information received by the PHS base station to a central monitoring device (see, for example, Patent Document 1).

  When such technical contents of Patent Document 1 are applied to an industrial equipment centralized management system, it is conceivable to perform a method of transmitting monitoring target monitoring information between the information detection unit and the centralized management unit by PHS wireless communication.

According to such an industrial equipment centralized management system, a communication method for transmitting monitoring information to be monitored between the information detection unit and the centralized management unit is performed by PHS wireless communication, thereby adding or changing equipment such as a production line. Even if this occurs, it is not necessary to perform addition or change work related to the wire between the information detection unit and the centralized management unit, and the work effort can be greatly reduced.
Japanese Unexamined Patent Publication No. 2003-32387 (see abstract and FIG. 1)

  However, according to the above-described conventional industrial equipment centralized management system, PHS wireless communication is assumed for information transmission to be monitored between the information detection unit and the centralized management unit. However, such PHS wireless communication uses an omnidirectional antenna. Since it is used, particularly in a communication environment in an industrial facility where electromagnetic noise, fading, and the like frequently occur, stable wireless communication cannot be secured due to the influence of electromagnetic noise, fading, and the like.

  Furthermore, according to the conventional industrial equipment centralized management system, the built-in PHS slave unit is arranged for each monitoring target. However, since the PHS wireless communication uses the omnidirectional antenna, the adjacent built-in PHS slave unit is used. When the same frequency channel is used between the machines, it is affected by radio wave interference, and in order to prevent the influence of such radio wave interference, the frequency channel used is classified for each PHS slave unit. In the trend of increasing the number of monitoring objects in industrial facilities, the number of PHS slave units increases with the increase in the number of monitoring objects, which in turn increases the number of frequency channels used. The actual situation is that effective utilization of frequency channels is desired.

  The present invention has been made in view of the above points, and an object of the present invention is to effectively use frequency channels used for wireless transmission when wirelessly transmitting information between the information detection unit and the centralized management unit. Another object of the present invention is to provide an industrial facility centralized management system capable of ensuring stable wireless communication without being affected by electromagnetic noise or fading in industrial facilities.

  In order to achieve the above object, the industrial facility centralized management system of the present invention is arranged for each monitoring target in the industrial facility, and an information detection unit for detecting information of the monitoring target, and detection by each information detection unit A plurality of wireless slave devices that wirelessly transmit the information, wireless communication with the plurality of wireless slave devices, and through each wireless slave device, the wireless master device that receives the monitoring target information detected by each information detection unit, An industrial facility centralized management system having a centralized management unit that centrally manages information of each monitoring target received by the wireless master unit, wherein the wireless master unit is connected to the same wireless slave unit for each of the wireless slave units. Directional antennas arranged for each of the wireless slave units so as to have directivity suitable only for wireless communication, and an antenna switching unit for switching and selecting an arbitrary directional antenna among the plurality of directional antennas And this antenna switching section When the directional antenna is switched and selected, a wireless communication unit that wirelessly communicates with a wireless slave device corresponding to the arbitrary directional antenna through the arbitrary directional antenna, and the arbitrary directional antenna according to a predetermined signal A control unit for controlling the antenna switching unit.

  The industrial facility centralized management system according to the present invention is arranged for each wireless master device so that the wireless slave devices have directivity suitable only for wireless communication with the same wireless master device. The slave unit side directional antenna, the slave unit side directional antenna, the slave unit side antenna switching unit for switching and selecting any slave unit side directional antenna, and the slave unit side antenna switching unit When the slave unit side directional antenna is switched and selected, the slave unit side wireless communication unit that wirelessly communicates with the wireless master unit corresponding to the arbitrary slave unit side directional antenna through the optional slave unit side directional antenna, A slave unit side control unit that controls the slave unit side antenna switching unit to switch and select the arbitrary slave unit side directional antenna according to a slave unit predetermined signal.

  In the industrial facility centralized management system of the present invention, the UWB system is used for wireless communication between the wireless master unit and the wireless slave unit.

  According to the industrial equipment centralized management system of the present invention configured as described above, the wireless master unit has a plurality of directional antennas having wireless communication directivity for each wireless slave unit in accordance with a predetermined signal. Of these, when an arbitrary directional antenna is selected for switching, wireless communication can be performed only with a wireless slave device corresponding to the arbitrary directional antenna through the arbitrary directional antenna, that is, by using the directional antenna. Since the one-to-one wireless communication between the wireless slave unit and the wireless master unit is ensured, the effective use of the frequency channel is avoided by avoiding the influence of radio interference between the wireless slave units that use the same frequency channel. Furthermore, by using a directional antenna, by securing stable wireless communication without being affected by electromagnetic noise or fading in industrial equipment, The information to be monitored can be centrally managed.

  According to the industrial facility centralized management system of the present invention, the wireless slave unit is in accordance with a slave unit predetermined signal, among a plurality of slave unit side directional antennas having radio communication directivity for each wireless master unit, By switching and selecting any slave unit directional antenna, wireless communication can be performed only with a wireless master unit corresponding to this slave unit directional antenna via this slave unit directional antenna. Since the one-to-one wireless communication between the wireless slave unit and the wireless master unit is ensured by using the machine side directional antenna, the influence of radio interference between wireless slave units that use the same frequency channel is avoided. In this way, the frequency channel can be effectively used. Furthermore, by using the directional antenna on the slave unit side, stable wireless communication can be achieved without being affected by electromagnetic noise or fading in industrial equipment. communication By securing, it is possible to centrally manage the information for each monitored.

  According to the industrial facility centralized management system of the present invention, the UWB system is adopted for the wireless communication between the wireless master unit and the wireless slave unit, that is, it is strong against the influence of electromagnetic noise, fading, etc. in the industrial facility. Since the ultra-wideband system is adopted, stable wireless communication can be ensured between the wireless master device and the wireless slave device, and information on each monitoring target can be centrally managed.

  Hereinafter, an industrial facility centralized management system showing an embodiment of the present invention will be described based on the drawings. FIG. 1 is a block diagram showing a schematic configuration inside an industrial equipment centralized management system showing the present embodiment.

  The industrial facility centralized management system 1 shown in FIG. 1 is arranged for each monitoring target of an industrial facility, for example, a manufacturing line of a factory, detects monitoring information such as production progress information and abnormality alarm information of the manufacturing line, and detects these. The wireless slave unit 10 wirelessly transmits the monitored information by the UWB (Ultra Wide Band) method, and wirelessly communicates with the wireless slave unit 10 by the UWB method, so that each wireless slave unit 10 transmits the wireless information. The wireless master unit 20 that receives the monitoring information is connected to the wireless master unit 20 through the LAN 30 by wire, and the monitoring information of each monitoring target is received through the wireless master unit 20, so that A central management unit 40 such as a personal computer is provided for collecting the monitoring information and centrally managing the monitoring information.

  Note that the UWB system is a wireless system that spreads energy over a very wide frequency range of, for example, several GHz to several tens GHz by using a very narrow impulse wave of 1 ns or less, for example. Is extremely low, and stable wireless communication can be performed even if some frequencies are lost due to noise or fading.

  The wireless slave unit 10 detects the monitoring information such as the production progress information and abnormality information of the production line, and performs UWB wireless processing on the monitoring information detected by the information detecting unit 11, and this monitoring information Is transmitted to the wireless master unit 20 by the UWB system through the slave side directional antenna 12.

  The wireless master unit 20 wirelessly communicates with the wireless slave unit 10 through the plurality of directional antennas 21 and the directional antennas 21 in order to wirelessly communicate with each wireless slave unit 10, and the central management unit 40 and the LAN. And a wireless master device main body 22 to be connected. The broken lines in the figure illustrate the directivity of the directional antenna 21 of the wireless master unit 20 and the directivity of the slave side directional antenna 12 of each wireless slave unit 10. Since the directivity of the directional antenna 21 of the mobile unit 20 and the directivity of the handset side directional antenna 12 of each wireless slave unit 10 are matched, the wireless master unit 20 and the wireless slave unit 10 are connected to each other. This ensures wireless transmission.

  FIG. 2 is a block diagram showing a schematic configuration inside the wireless master unit 20 and the wireless slave unit 10 according to the present embodiment.

  The wireless slave unit 10 shown in FIG. 2 has a directivity suitable only for wireless communication with the wireless master unit 20 for each wireless master unit 20 as a communication target. A plurality of slave unit side directional antennas 12 respectively arranged, a slave unit side antenna switching unit 14 for switching and selecting an arbitrary slave unit side directional antenna 12 among the plurality of slave unit side directional antennas 12, and The slave unit side UWB wireless communication unit 15 that performs UWB wireless communication and the slave unit side UWB wireless communication unit 15 through the arbitrary slave unit side directional antenna 14 selected by the slave unit side antenna switching unit 14. When the wireless communication is performed, the slave-side signal processing unit 16 that performs signal processing such as scramble processing on the transmission information and signal processing such as descrambling processing on the reception information, and a child that stores various programs and information Machine A memory 17, and a slave-side controller 18 that controls the entire radio personal station unit 10.

  The slave unit side control unit 18 controls the slave unit side antenna switching unit 14 to switch and select an arbitrary slave unit side directional antenna 12 among the plurality of slave unit side directional antennas 12, and selects the same. A wireless communication operation with the wireless master device unit 20 corresponding to the slave device side directional antenna 12 is executed through an arbitrary slave device side directional antenna 12.

  The wireless master unit 20 is arranged for each wireless slave unit 10 so that each wireless slave unit 10 to be communicated has directivity suitable only for wireless communication with the wireless slave unit 10. A plurality of directional antennas 21, an antenna switching unit 23 that switches and selects an arbitrary directional antenna 21 among the plurality of directional antennas 21, and an arbitrary directional antenna 21 that is switched and selected by the antenna switching unit 23 Then, when performing wireless communication with the UWB wireless communication unit 24 and the UWB wireless communication unit 24 that wirelessly communicates with the wireless slave unit 10 corresponding to the arbitrary directional antenna 21 through the arbitrary directional antenna 21, The signal processing unit 25 performs signal processing such as scramble processing on the transmission information, and performs signal processing such as descrambling processing on the reception information, and the centralized management unit 40. A LAN interface 26 which controls the interface with LAN30 which has a memory 27 for storing various programs and information or the like, and a control unit 28 that controls the entire radio cell station unit 20.

  The control unit 28 controls the antenna switching unit 23 to switch and select an arbitrary directional antenna 21 among the plurality of directional antennas 21 according to a predetermined signal, and the arbitrary directional antenna 21 selected and switched. Through this, the wireless communication operation with the wireless slave unit 10 corresponding to the directional antenna 21 is executed. The predetermined signal corresponds to, for example, a timing signal for wireless communication with each wireless slave unit 10 when performing polling communication with each wireless slave unit 10, a wireless communication request signal from the wireless slave unit 10, and the like. To do.

  Each directional antenna 21 can establish one-to-one wireless communication with an arbitrary slave unit side directional antenna 12 in the wireless slave unit 10, and further, radio interference of other slave unit side directional antennas 12 can be established. It is assumed that each wireless slave unit 10 is arranged so as to have directivity that is not affected. In order to provide the directional antenna 21 with a desired directivity, the control unit 28 variably controls, for example, the direction of directivity for changing the sensitivity direction through the antenna switching unit 23, and the directivity, for example, like a beam. If the directivity is strong, the directivity area (communication area) is narrow, and if the directivity is weak, the directivity area (communication area) is wide. I have to. Similarly, each handset-side directional antenna 12 can establish one-to-one wireless communication with an arbitrary directional antenna 21 in the wireless base unit 20, and further, radio interference of other directional antennas 21 can be established. It is assumed that each wireless master unit 20 is arranged with directivity that is not affected. Similarly, in order to provide the slave unit side directional antenna 12 with desired directivity, the slave unit side control unit 18 variably controls the direction of directivity through the slave unit side antenna switching unit 14. The slave unit side directional antenna 12 is provided with desired directivity by variably controlling the strength of the directivity.

  Further, the slave unit side control unit 18 in the wireless slave unit 10 switches and selects an arbitrary slave unit side directional antenna 12 among the plurality of slave unit side directional antennas 12 according to the slave unit side predetermined signal. Therefore, the antenna switching unit 14 is controlled, and the wireless communication operation with the wireless master unit 20 corresponding to the slave unit directional antenna 12 is executed through the arbitrary slave unit directional antenna 12 selected for switching. It is. The slave-side predetermined signal is, for example, a timing at which a wireless communication request signal from the wireless master device unit 20 is transmitted to the wireless master device unit 20 spontaneously when abnormal information is detected by the information detector 11. This corresponds to a signal or a timing signal linked to the polling communication of the wireless master unit 20.

  The wireless master unit is a wireless master unit 20, a wireless slave unit is a wireless slave unit 10, a wireless communication unit is a UWB wireless communication unit 24, and a slave unit side wireless communication unit is a slave unit side UWB wireless communication unit. This corresponds to 15.

  Next, the operation of the industrial facility centralized management system 1 showing this embodiment will be described.

  The slave unit side control unit 18 of each wireless slave unit 10 sequentially detects monitoring information such as production progress information in the information detection unit 11 and sequentially stores the detected monitoring information in the slave unit side memory 17. .

  When the control unit 28 of the wireless master unit 20 detects a predetermined signal of polling communication, for example, the control unit 28 supports the wireless slave unit 10 in order to wirelessly communicate with the wireless slave unit 10 to be communicated corresponding to the predetermined signal. The antenna switching unit 23 is controlled so that the selected directional antenna 21 is switched. The predetermined signal includes unit identification information for identifying the wireless slave unit 10 to be communicated among the plurality of wireless slave units 10, and the control unit 28 includes unit identification information included in the predetermined signal. Based on the above, the wireless slave unit 10 to be communicated and the directional antenna 21 corresponding to the wireless slave unit 10 are recognized.

  Further, the slave side controller 18 of the radio slave unit 10 monitors the polling communication timing of the radio master unit 20, and when a slave unit predetermined signal at the polling communication timing is detected, the radio corresponding to the polling communication timing is detected. In order to perform wireless communication with the parent device unit 20, the child device side antenna switching unit 14 is controlled so as to switch and select the child device side directional antenna 12 corresponding to the wireless parent device unit 20.

  That is, the wireless master unit 20 switches and selects the directional antenna 21 corresponding to the wireless slave unit 10 to be communicated, and the wireless slave unit 10 is a slave corresponding to the wireless master unit 20 to be communicated. The side directional antenna 12 is switched and selected, and the wireless master unit 20 and the wireless slave unit 10 have completed the antenna preparation for one-to-one wireless communication through the directional antenna 21 and the slave side directional antenna 10. become.

  When the switching selection of the slave unit side directional antenna 12 is completed, the slave unit side control unit 18 of the wireless slave unit 10 establishes wireless communication with the wireless master unit 20 corresponding to the slave unit side directional antenna 21. Therefore, the slave side UWB wireless communication unit 15 is controlled.

  When the switching selection of the directional antenna 21 is completed, the control unit 28 of the wireless master unit 20 sets the UWB wireless communication unit 24 to establish wireless communication with the wireless slave unit 10 corresponding to the directional antenna 21. Control.

  When the wireless communication between the wireless master unit 20 and the wireless slave unit 10 is established, the slave unit side control unit 18 of the wireless slave unit 10 displays monitoring information such as production progress information stored in the slave unit memory 17. The monitoring information is read and transmitted to the handset side signal processing unit 16.

  The handset side signal processing unit 16 performs signal processing such as scramble processing on the monitoring information read from the handset side memory 17, and transmits the monitoring information subjected to the signal processing to the handset side UWB wireless communication unit 15.

  The slave unit side UWB wireless communication unit 15 modulates the monitoring information subjected to signal processing by the slave unit side signal processing unit 16 into the UWB system, and the modulated monitoring information is modulated by the slave unit side antenna switching unit 14. It transmits to the radio | wireless main | base station unit 20 of communication object through the subunit | mobile_unit side directional antenna 12 selected by switching.

  The UWB wireless communication unit 24 of the wireless master unit 20 receives the monitoring information from the wireless slave unit 10 through the directional antenna 21 selected by the antenna switching unit 23, and demodulates the received monitoring information. The demodulated monitoring information is transmitted to the signal processing unit 25.

  The signal processing unit 25 transmits the monitoring information from the wireless slave unit 10 to the control unit 28 by performing signal processing such as descrambling processing on the demodulated monitoring information.

  The control unit 28 sequentially stores the monitoring information subjected to the signal processing by the signal processing unit 25 in the memory 27. The wireless master unit 20 sequentially receives monitoring information from each wireless slave unit 10 in accordance with a predetermined communication polling timing, and sequentially stores the received monitoring information in the memory 27.

  Further, when the control unit 28 of the wireless master unit 20 detects a read command from the centralized management unit 40 through the LAN interface 26, the monitoring information of each wireless slave unit 10 stored in the memory 27 is transmitted to the centralized management unit 40. To do.

  The central management unit 40 receives monitoring information related to each wireless slave unit 10 through the wireless master unit 20 and centrally manages the monitoring information related to each wireless slave unit 10.

  The user of the central management unit 40 can visually recognize the production progress information, abnormality alarm information, etc. of each monitoring target by displaying the monitoring information of each wireless slave unit 20 centrally managed in this way on the screen. it can.

  According to the present embodiment, the wireless master unit 20 has an arbitrary one of the plurality of directional antennas 21 having the UWB wireless communication directivity for each wireless slave unit 10 according to a predetermined signal. When the directional antenna 21 is switched and selected, wireless communication can be performed only with the wireless slave unit 10 corresponding to the arbitrary directional antenna 21 through the arbitrary directional antenna 21, that is, the directional antenna is used. Thus, since the one-to-one wireless communication between the wireless slave unit 10 and the wireless master unit 20 is ensured, the influence of radio wave interference between the wireless slave units 10 using the same frequency channel can be avoided. In addition, the frequency channel can be effectively used, and further, by using the directional antenna 21, electromagnetic noise and fading in the production line can be achieved. Without receiving the influence, by ensuring a stable wireless communication can be centralized monitoring information for each monitored.

  According to the present embodiment, the wireless slave unit 10 has the directivity of UWB wireless communication for each wireless master unit 20 in accordance with the slave predetermined signal at the communication polling timing of the wireless master unit 20. When an arbitrary slave unit side directional antenna 12 is switched and selected from among the plurality of slave unit side directional antennas 12, the arbitrary slave unit side directional antenna 12 is switched to this arbitrary slave unit side directional antenna 12. Wireless communication can be performed only with the corresponding wireless master unit 20, that is, one-to-one wireless communication between the wireless slave unit 10 and the wireless master unit 20 is ensured by using the handset side directional antenna 12. As a result, it is possible to effectively use the frequency channel by avoiding the influence of radio wave interference between the wireless slave units 10 that use the same frequency channel. Furthermore, by using the handset side directional antenna 12, the monitoring information of each monitoring target is concentrated by ensuring stable wireless communication without being affected by electromagnetic noise or fading in the production line. Can be managed.

  According to this embodiment, the wireless communication between the wireless master unit 20 and the wireless slave unit 10 employs the UWB system that is strong against the influence of electromagnetic noise and fading in the production line. Stable wireless communication can be ensured between the mobile unit 20 and the wireless slave unit 10, and monitoring information of each monitoring target can be centrally managed.

  In the above embodiment, a communication request from the wireless master unit 20 to the wireless slave unit 10 to be communicated, that is, an operation of polling communication has been described as an example. Also in the case of a communication request to the mobile unit 20, the wireless handset unit 10 switches and selects the handset side directional antenna 12 corresponding to the wireless base unit 20 to be communicated, and the wireless handset unit 20 selects the same. Needless to say, when the directional antenna 21 corresponding to the wireless slave unit 10 is switched and selected, one-to-one wireless communication between the wireless master unit 20 and the wireless slave unit 10 can be established.

  In the above embodiment, the monitoring information such as the production progress information such as the production line and abnormality alarm information that detects abnormality is detected by the information detection unit 11 of the wireless slave unit 10 arranged for each production line, This monitoring information is transmitted from the wireless slave unit 10 via the wireless master unit 20 to the centralized management unit 40. For example, the wireless slave unit 10 is arranged in the drive unit of the industrial robot on the production line. The drive information of the industrial robot is wirelessly transmitted from the centralized management unit 40 to the wireless slave unit 10 through the wireless master unit 20, and the industrial robot is driven and controlled based on the drive information received by the wireless slave unit 10. In such a system, the wireless master unit 20 and the wireless slave unit are not affected by electromagnetic noise or fading in industrial equipment. By ensuring stable radio communication at between 10 can be driven and controlled turn industrial robots remotely.

  In the above embodiment, the wireless communication between the wireless slave unit 10 and the wireless master unit 20 has been described by taking the UWB system as an example. However, the wireless slave unit 10 and the wireless master unit 20 are paired. Needless to say, the same effect can be obtained no matter what wireless communication system is adopted as long as a directional antenna capable of wireless communication is provided.

  Further, in the above embodiment, in order to adapt the directivity of the directional antenna 21 and the handset side directional antenna 12, the directional antenna 21 and the handset side directional antenna 12 are associated with each other in advance. The wireless master unit 20 (wireless slave unit 10) is provided with a plurality of directional antennas 21 (slave device-side directional antennas 12), respectively. Each wireless master unit 20 (each wireless slave unit 10) is 1 by variably controlling the control unit 28 (slave side controller 18) through the antenna switching part 23 (slave side antenna switching part 14). The directivity antenna 21 (slave unit side directional antenna 12) may have a plurality of directivity characteristics corresponding to the directivity of each slave unit side directional antenna 12.

  The present invention secures one-to-one wireless communication between a wireless slave unit and a wireless master unit by using a directional antenna, for example, for industrial lines such as a production line in a communication environment where electromagnetic noise and fading frequently occur. The facility is useful for an industrial facility centralized management system capable of centrally managing monitoring information of monitoring targets of the same production line using the wireless communication.

It is a block diagram which shows schematic structure inside the industrial equipment centralized management system which shows embodiment of this invention. It is a block diagram which shows schematic structure inside the radio | wireless main | base station unit and radio | wireless handset unit in connection with this Embodiment.

Explanation of symbols

1 Centralized management system for industrial equipment 10 Wireless slave unit (wireless slave unit)
DESCRIPTION OF SYMBOLS 11 Information detection part 12 Slave unit side directional antenna 14 Slave unit side antenna switching part 15 Slave unit side UWB wireless communication part (slave unit side wireless communication part)
18 Remote unit control unit 20 Wireless base unit (wireless base unit)
21 Directional antenna 23 Antenna switching unit 24 UWB wireless communication unit (wireless communication unit)
28 Control unit 40 Centralized management unit

Claims (3)

An information detection unit that is arranged for each monitoring target in an industrial facility and detects information of the monitoring target, a plurality of wireless slave devices that wirelessly transmit information detected by each information detection unit, and the plurality of wireless devices A wireless master unit that wirelessly communicates with a wireless device and receives information on a monitoring target detected by each information detection unit through each wireless slave device, and a centralized control that centrally manages information on each monitoring target received by the wireless master device An industrial equipment centralized management system having a management section,
The wireless master unit is
A directional antenna arranged for each wireless slave unit so as to have directivity suitable only for wireless communication with the wireless slave unit for each wireless slave unit,
Of these multiple directional antennas, an antenna switching unit that switches and selects an arbitrary directional antenna;
When an arbitrary directional antenna is switched and selected by the antenna switching unit, a wireless communication unit that wirelessly communicates with a wireless slave device corresponding to the arbitrary directional antenna through the arbitrary directional antenna;
An industrial facility centralized management system comprising: a control unit that controls the antenna switching unit so as to switch and select the arbitrary directional antenna according to a predetermined signal. The wireless slave is
To provide a directivity suitable only for wireless communication with the same wireless parent device for each wireless parent device, the slave unit side directional antenna respectively disposed for each wireless parent device,
Of these slave unit side directional antennas, a slave unit side antenna switching unit that switches and selects an arbitrary slave unit side directional antenna,
When any slave unit side directional antenna is switched and selected in this slave unit side antenna switching unit, a radio master unit and a radio corresponding to this any slave unit side directional antenna are wirelessly transmitted through this arbitrary slave unit side directional antenna. A handset side wireless communication unit for communication;
2. A slave unit side control unit that controls the slave unit side antenna switching unit to switch and select the arbitrary slave unit side directional antenna according to a slave unit predetermined signal. Industrial equipment central management system. 3. The industrial facility centralized management system according to claim 1, wherein the UWB system is used for radio communication between the radio master unit and the radio slave unit.

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