JP2010028159A - Radio telecontrol system - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a radio telecontrol system enabling rapid communication by allowing a radio slave set to perform radio communication with another communicable radio master set when urgent radio communication is required because radio communication with a predetermined radio master set is not available. <P>SOLUTION: When the radio slave set 11 fails in radio communication with a predetermined radio master set 10 previously set, urgent radio communication available for all radio master sets for reception starts. When a radio master set 06 receives the urgent radio communication, the radio slave set 11 performs communication via the radio master set 06. Accordingly, such a situation that the radio slave set 11 retries due to communication failure with the radio mater set 10 can be prevented. Furthermore, a time when radio communication to the radio master set 06 is not available (the master set is executing predetermined processing) is predicted, thereby enabling accurate urgent radio communication more rapidly without attempting useless radio communication processing. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a terminal-side network control device connected to a center-side network control device via a communication line, a wireless master device connected to the terminal-side network control device, and a wireless network connected to the wireless master device via a wireless line. The present invention relates to a wireless telecontrol system configured with a wireless slave unit that performs communication, and particularly relates to wireless communication control between the master unit and the slave unit.

  Conventionally, it has been proposed to perform remote operation via a communication line in a system for controlling home appliances, a security system such as crime prevention, and the like. However, in such remote control, since communication is performed via a wireless communication line, connectivity is not necessarily guaranteed. For example, when a device that generates noise that is affected by radio is being operated, the radio wave condition temporarily deteriorates and communication is often impossible.

  In addition, when communicating, information on the parent-child unit relationship between the wireless parent device and the wireless child device is determined based on the wireless field strength value or radio wave received power value when wireless communication is performed. Are automatically registered (see Patent Document 1). In other words, when response messages from a plurality of wireless slave units responding to messages from the wireless master unit are received, the actual radio propagation path is obeyed on the basis of the received power of the radio waves from the wireless slave units without depending on the hands. The parent-child device relation table is automatically generated, and the data in this table is transmitted to the wireless parent device and the wireless child device to update registration, thereby improving the quality of the wireless section.

In the above cases, the radio field conditions differ between the registration of the wireless master unit and the wireless slave unit, the periodic wireless communication, and the start of the wireless communication. There is a problem that it takes more time to measure values and compare these measured values. In addition, there is a problem in that the connection of the wireless line is deteriorated due to more useless wireless communication lines and congestion of the radio wave condition. Furthermore, there is a problem in that unnecessary wireless communication results in wasteful power consumption.
JP 2000-286960 A

Therefore, when the wireless slave device fails in wireless communication with a predetermined wireless master device determined in advance, the wireless slave device and other wireless slave devices are used by using emergency wireless communication that can be received by all the wireless master devices. There is a problem to be solved in terms of enabling wireless communication with the wireless parent device.
An object of the present invention is to start emergency wireless communication that allows all wireless master devices to receive when the wireless slave device has failed in wireless communication with a predetermined wireless master device that is determined in advance. It is to provide a wireless telecontrol system that enables rapid communication via another wireless master device that has received wireless communication for wireless communication and can minimize wasteful wireless communication processing by the wireless slave device .

  In order to solve the above-described problems, the present invention provides a radio telecontrol system according to the present invention comprising a center-side network control device, a terminal-side network control device connected to the center-side control device via a communication line, and the terminal-side network. A wireless master device connected to the control device, a wireless slave device having a function of communicating with the wireless master device via a wireless line at the time of emergency or contact operation, and the center side network control device according to a preset external notification A wireless telecontrol system comprising an external communication device for reporting to the outside, wherein the wireless slave unit is configured to transmit all of the wireless master units of the system when wireless communication is not possible with a predetermined wireless master unit. Wireless communication is performed via the other wireless master device that performs emergency wireless communication that can be received by the device and receives the emergency wireless communication based on the wireless communication information included in the emergency wireless communication. And performing signal. That is, when the wireless slave device fails in wireless communication with a predetermined wireless master device, the emergency wireless communication that can be received by all the wireless master devices is started, and the emergency wireless communication is performed. Communication is performed via another wireless master device that can receive wireless communication immediately after reception.

  The wireless telecontrol system of the present invention includes a center side network control device, a terminal side network control device connected to the center side control device via a communication line, and a wireless master device connected to the terminal side network control device. A wireless slave device having a function of performing communication with the wireless master device via a wireless line at the time of emergency or contact operation, and an external communication device for reporting from the center side network control device to the outside in accordance with a preset external notification. A radio telecontrol system configured, wherein the radio master unit monitors emergency radio communication from all the radio slave units of the system and receives the emergency radio communication. And performing wireless communication with the wireless slave device that has transmitted the emergency wireless communication based on emergency wireless information included in the emergency wireless communication. That is, all the wireless master devices of the system monitor the presence or absence of emergency wireless communication from the wireless slave device, and when emergency wireless communication is received, the emergency wireless communication included in the emergency wireless communication is received. Based on the wireless information, wireless communication with the wireless slave device is started, and wireless communication with the wireless slave device is performed.

  Further, in this wireless telecontrol system, the wireless communication response time to the wireless slave device of the other wireless master device that has received the emergency wireless communication is determined based on the wireless communication information. Each can be set at a different time.

  Further, in this wireless telecontrol system, the wireless slave unit can store the wireless communication information and calculate a communication impossible predicted time based on the stored wireless communication information. That is, based on the wireless communication information stored in the past, it is possible to predict a time zone during which communication is impossible as a trend.

  Further, in the above-described wireless telecontrol system for calculating the communication impossible predicted time, the wireless slave device may calculate the communication impossible predicted time based on a communication situation for each day of the week or every hour. it can. That is, the time when communication is impossible has a tendency depending on the communication status such as the day of the week and the time zone. By grasping such a tendency, the time when communication is impossible can be predicted.

  Further, in the above-described wireless telecontrol system for calculating the communication impossible prediction time, the wireless slave unit stores the data immediately before the calculation when the communication impossible prediction time does not exist when calculating the communication impossible prediction time. It can be calculated based only on the communication time information.

In the wireless telecontrol system for calculating the predicted communication impossible time, the wireless slave device needs to communicate with the predetermined wireless master device within the time calculated by calculating the predicted communication impossible time. In such a case, the emergency wireless communication can be performed.
Further, when performing the emergency wireless communication, the wireless slave unit determines whether or not an emergency response prediction ID exists for the wireless master device, and performs the emergency wireless communication when the emergency response prediction ID does not exist Can do. In this case, the wireless slave device stores the wireless master device that has been successfully communicated as the emergency response prediction ID when the emergency wireless communication is successful, and regardless of whether the emergency wireless communication is successful or not. The predicted communication impossible time can be stored and updated.

  The wireless telecontrol system of the present invention cancels the situation in which the wireless slave unit repeats the retry process due to a communication failure with the predetermined wireless master unit, and the wireless communication to the predetermined wireless master unit is not performed. By predicting a possible time (such as when the base unit is executing a predetermined process), it is possible to perform emergency radio communication more quickly and accurately without performing unnecessary radio communication processing.

  According to the present invention, when an emergency wireless communication is required, the wireless slave device can quickly communicate by performing wireless communication to another wireless master device (sub master device) capable of communication. Become. In addition, by predicting in advance a case where wireless communication is impossible, it becomes possible to automatically avoid a state where wireless communication is impossible. If it is determined that wireless communication from a wireless slave unit to a specified wireless master unit is not possible, the number of cases where wireless communication fails will be reduced by performing wireless communication processing to a more suitable master unit. This makes it possible to minimize wireless communication processing by the wireless slave unit, resulting in lower power consumption. Furthermore, when wireless communication fails, it is possible to prevent the wireless communication from automatically shifting to a retry (retransmission) process by a timer or the like, and to perform notification or the like more quickly.

  Embodiments of a wireless telecontrol system according to the present invention will be described below in detail with reference to the drawings.

  FIG. 1 is a system configuration diagram showing an embodiment of a radio telecontrol system according to the present invention. The wireless telecontrol system shown in FIG. 1 includes a telephone network 01 or a personal computer 02 connected to a host computer 03 connected to the telephone network 03 and a communication line such as a telephone network. A terminal-side network control device (hereinafter referred to as “terminal NCU”) 05 connected to the center-side network control device 04, and a wireless master device (hereinafter referred to as “parent device”) 06 connected to the terminal NCU05; A wireless slave device (hereinafter referred to as “slave device”) 07,08 that communicates with the master device 06 via a wireless line, a master device 10 connected to a terminal NCU09 different from the terminal NCU05, and a parent device It is comprised by the subunit | mobile_unit 11 which communicates via the apparatus 10 and a radio | wireless line. In addition, the parent device 06 and the parent device 10 respectively belong to the child device 07 and the child device 08 or the child device 11.

  FIG. 2 is a block diagram showing the configuration of the master unit in the radio telecontrol system of this embodiment. 2 includes a communication unit 12 for communicating with the terminal NCU, an antenna 15, a radio unit 14 connected to the antenna 15 and performing radio communication with the slave unit, The control unit 13 controls the overall operation of the machine, and the calculation unit 16 calculates the wireless communication response time from the wireless communication information after the emergency wireless reception.

  FIG. 3 is a block diagram showing the configuration of the slave unit in the radio telecontrol system of the present embodiment. 3 includes an antenna 21, a wireless unit 22 connected to the antenna 21 for wireless communication, a control unit 23 for controlling the overall operation of the slave unit, a time The timer function 25 that performs management and the storage unit 24 that records a time zone during which communication is impossible and an emergency response ID are configured.

  In the wireless tele-control system, when emergency or contact information is notified to the telephone set 01 or the PC 02, a wireless call is made from the slave unit 07 or slave unit 08 having received an emergency or contact input (signal) to the master unit 06. Done. The base unit 06 that has received the radio call is connected to the terminal NCU05, and the terminal NCU05 is notified through the center side network control unit 04. The center-side network control device 04 is connected to the host computer 03, and the host computer 03 notifies the telephone set 01 and the PC 02 of an emergency or contact through the telephone network.

  FIG. 4 shows that in the wireless telecontrol system of this embodiment, the base unit 06 receives data from the slave unit 07 or 08 or the slave unit 11 via a wireless line (base unit antenna 16 and base unit radio unit 15). 10 is a flowchart showing the operation of base unit 06 in the case of In the case of an urgent notification, the handset 11 is sent not only to the predetermined base unit 10 that places the handset 11 under control, but also to another base unit (sub base unit) 06 that does not place the handset 11 under control. Also send out.

  First, the parent device 06 waits for wireless reception of normal notification data or emergency or contact notification data from the child devices 07, 08, 11 (S01). When there is data reception in S01, base unit 06 determines whether it is emergency notification data or normal notification data (S02). When the received data is normal notification data (wireless communication from the slave unit 07 and the slave unit 08), the normal sequence waits until the current wireless communication is completed, and when the received data is terminated (S08), The device 06 notifies the center of the notification information of the desired slave device 07 or 08 (S07).

  If there is data reception in S01 and the base unit 06 determines in S02 that the received data is emergency notification data (emergency notification data from the slave unit 11), the wireless response time is calculated. (S03). The wireless response time calculation (S03) is a problem that radio congestion occurs due to the fact that a large number of master units that simultaneously receive emergency radios from the slave units respond to the desired slave unit at the same time. In order to solve the problem, it is possible to make a wireless response to the slave unit with a time difference. The wireless response time calculation (S03) is also to avoid notifying the same emergency notification data from a large number of master units to the center all at once.

  In the case of normal notification data, a calculation process in which the wireless response time becomes 0 may be performed so as to respond immediately. The calculation of the wireless response time when the emergency notification data is received is obtained, for example, by the difference between the two digits of the digit having its own ID and the two digits of the same digit of the ID of the other party of the received data. In this case, since the other party's IDs are usually different from each other, the difference from the own ID is different for each other party, and simultaneous responses to the slave units can be avoided. Alternatively, the wireless response time calculation may be performed by calculating a random value from a value unique to the parent device. During the wireless response time calculated in S03, the base unit 06 does not respond to the transmission destination (slave unit 11) and enters a standby state (S04). The base unit 06 waits until the response time obtained in S03 (S04), and performs wireless communication with the desired slave unit 11 that has transmitted the emergency notification data when the response time is reached (S05).

  The parent device 06 that has performed wireless communication with the child device 11 confirms the wireless response from the child device 11 (S06). When there is a wireless response from the slave unit 11, the master unit 06 notifies the center of emergency notification information of the slave unit 11 (S07). If there is no wireless response from the slave unit 11 in S06, it is determined that another master unit has responded to the notification to the center, and the process returns to the standby state (S01). In this way, the emergency notification data is notified to the center without repeatedly performing the wireless communication process by using the base unit of the present system that can respond more quickly.

  FIG. 5 shows the operation of the slave unit 11 when the slave unit 11 notifies the master unit 06 of data via the wireless line (slave unit antenna 21 and slave unit radio unit 22) in the wireless telecontrol system of this embodiment. It is a flowchart which shows.

  First, the slave unit 11 determines whether or not there is emergency notification information, and waits for transmission of emergency contact notification data (S11). If there is emergency notification information in the determination of S11, the latest three communication impossible time zones, the same day of the week, from the data storing the communication impossible time to the normal parent device 10 under which the child device 11 is subordinated. For each of the latest three non-communication time zones and the latest three non-communication time zones for the same time zone, the law (same day, same time) is obtained for each related item (day of the week, time). Moreover, the emergency response prediction ID corresponding to the time when communication is impossible (that is, the ID of the master unit that is predicted to be able to respond in an emergency in the future due to the success of emergency wireless communication) (That is, from which ID the communication was successful at the time of emergency response). The time stored in the communication impossible time zone is classified according to items such as the time zone, day of the week, and day, and it is determined whether or not the current time is included in comparison (S12). The presence of the emergency response prediction ID when the communication is impossible is confirmed (S13).

  If the current time is not included in the communication impossible prediction time zone in the determination of S12, the child device 11 is urgent to the normal parent device 10 and when there is an emergency response prediction ID obtained in S13. Wireless communication of notification information is performed with respect to the base unit of the corresponding prediction ID (S14). After this notification, the slave unit 11 confirms the presence / absence of a wireless response from these predetermined master units (S15). If the wireless communication is not successful in S15 and the wireless response cannot be confirmed, or if the master unit of the emergency response prediction ID does not exist in S13, the emergency wireless communication is performed (S16). Successful wireless communication with the master unit of this system that can be notified to the center (sub master unit 06 in this example) (S17) makes it possible to promptly notify an emergency contact.

  If the wireless communication in S17 is successful, the ID of the parent device that has succeeded in the wireless communication is stored as an emergency response prediction ID (S18). At the same time, the storage of the communication impossible predicted time (S19) is also updated. If there is no wireless response from the system master in S17, the failed time zone is additionally stored as the stored data of the predicted communication impossible time zone (S19). The number of stored data is the latest 30, and if it exceeds that, the oldest data is deleted in order and new data is stored. Note that, when there is no data necessary for the calculation, the calculation is performed based only on the communication time information stored immediately before.

  An example of the operation in the predicted communication impossible time zone in the wireless telecontrol system of this embodiment will be described. FIG. 6 is a time sequence diagram showing the operation in the predicted communication impossible time zone in the radio telecontrol system of the present embodiment. During the communication impossible predicted time period, even if there is wireless communication from the slave unit 07, wireless communication that is a response from the master unit 06 is stopped. These are stored in the handset storage unit 24.

  An example of a communication impossible time zone and a communication impossible prediction time zone in the wireless telecontrol system of this embodiment will be described. FIG. 7 is a diagram illustrating an example of a communication impossible time zone and a communication impossible prediction time zone stored in the storage unit in the wireless telecontrol system of the present embodiment. These are stored in the handset storage unit 24. With respect to FIG. 7, for example, as an average of the latest three events, an average value of 35 minutes [= (60 + 15 + 30) / 3 in the cases of 4, 5, and 6 for the communication impossible time zone on Tuesday from 17:00 to 17:35 For the communication impossible time zone of 1st to 1:40 on the first day of every month, the average value 40 minutes [= (60 + 30 + 60) / 3] of the cases 1, 2, and 7 is stored.

It is a system configuration figure showing one embodiment in a radio telecontrol system of the present invention. It is a block diagram which shows the structure of the main | base station in the radio | wireless tele-control system of this invention. It is a block diagram which shows the structure of the subunit | mobile_unit in the radio | wireless tele-control system of this invention. 4 is a flowchart showing an operation at the time of data reception of a base unit in the wireless telecontrol system of the present invention. 5 is a flowchart showing a communication operation of a slave unit to a master unit in the wireless telecontrol system of the present invention. It is a time sequence diagram which shows operation | movement of the communication impossible estimated time in the radio | wireless tele-control system of this invention. In the radio | wireless tele-control system of this invention, it is a figure which shows the memory | storage part of a communication impossible prediction time slot | zone and emergency response prediction ID.

Explanation of symbols

01 Telephone 02 PC
03 Host computer 04 Center side network control device 05 Terminal NCU # A 06 Radio base unit #A
07 Wireless handset #A 08 Wireless handset #B
09 Terminal NCU # B 10 Wireless base unit #B
11 wireless slave device #C 12 parent device communication unit 13 parent device control unit 14 parent device wireless unit 15 parent device antenna 16 parent device wireless response time calculation unit 21 child device antenna 22 child device wireless unit 23 child device control unit 24 child device Storage unit 25 Remote timer function

Claims (9)

Center-side network control device, terminal-side network control device connected to the center-side network control device via a communication line, a wireless master unit connected to the terminal-side network control device, a wireless line for emergency and contact operations In a wireless telecontrol system composed of a wireless slave device having a function of performing communication with the wireless master device via an external communication device that reports to the outside from the center side network control device according to a preset external notification,
The wireless slave device performs emergency wireless communication that allows all the wireless master devices of the system to receive when wireless communication is not possible with the predetermined wireless master device, and is included in the emergency wireless communication A wireless telecontrol system that performs wireless communication via the other wireless master device that has received the emergency wireless communication based on the wireless communication information. Center-side network control device, terminal-side network control device connected to the center-side network control device via a communication line, a wireless master unit connected to the terminal-side network control device, a wireless line for emergency and contact operations In a wireless telecontrol system composed of a wireless slave device having a function of performing communication with the wireless master device via an external communication device that reports to the outside from the center side network control device according to a preset external notification,
The wireless master device monitors emergency wireless communication from all the wireless slave devices of the system, and includes wireless communication included in the emergency wireless communication in response to receiving the emergency wireless communication. A wireless tele-control system, wherein wireless communication is performed with the wireless slave device that has transmitted the emergency wireless communication based on information.   The wireless communication response time when the other wireless master device that has received the emergency wireless communication makes a wireless communication response to the wireless slave device is different for each of the other wireless master devices based on the wireless communication information The radio telecontrol system according to claim 1 or 2, characterized in that   The wireless slave device according to any one of claims 1 to 3, wherein the wireless slave device stores the wireless communication information and calculates a communication impossible predicted time based on the stored wireless communication information. Telecontrol system.   The wireless telecontrol system according to claim 4, wherein the wireless slave device calculates the predicted communication impossible time based on a communication status for each day of the week or for each hour.   The wireless slave device performs calculation based on only the communication time information stored immediately before when the communication necessary prediction time is calculated when there is no data necessary for the calculation. The radio telecontrol system according to claim 4.   The wireless slave device performs the emergency wireless communication when communication with the predetermined wireless master device is required within the time calculated from the calculation of the communication impossible predicted time. The radio telecontrol system according to any one of claims 4 to 6.   The wireless telephony device according to claim 7, wherein the wireless slave device determines whether or not an emergency response prediction ID exists for the wireless master device, and performs the emergency wireless communication when the emergency response prediction ID does not exist. Control system.   When the emergency wireless communication is successful, the wireless slave device stores the wireless master device that has been successfully communicated as the emergency response prediction ID, and the communication is impossible regardless of the success or failure of the emergency wireless communication. 9. The radio telecontrol system according to claim 8, wherein the predicted time is stored / updated.

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