JP2002353909A - Radio equipment and remote supervisory and control method therefor - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide radio equipment and a remote supervisory and control method therefor, with which radio equipment is supervised and controlled remotely easily and at a low cost. SOLUTION: It is discriminated whether or not the service channel signal of an interface part, having a wired port and a wireless port, is a signal composed of character codes except for a prescribed character code, such as ASCII code. Then, the remote equipment is supervised and controlled by routing for distributing the service channel signal to the wired port or wireless port, in accordance with the discriminated result.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a radio apparatus for remotely monitoring and controlling using, for example, a service channel and a remote monitoring and control method therefor.

[0002]

2. Description of the Related Art A supervisory control unit (hereinafter, referred to as M) is used for supervisory control of radio equipment because of its versatility and low cost.
PU) is provided with an interface capable of communicating with general-purpose communication software for a personal computer (personal computer), and a method of monitoring and controlling a wireless device using a personal computer is used.

[0003] In addition, since such monitoring control complicates the processing of the MPU, it is often the case that the monitoring control of the MPU is limited only to its own station. For example, as shown in FIG. 4, for monitoring and controlling the apparatus, it is necessary to connect the personal computer 4 directly to each MPU 3.

[0004] When monitoring and controlling a wireless device other than its own station, for example, as shown in Japanese Patent Application Laid-Open No. 9-23199, an MPU of each wireless station is provided in advance by a service provided exclusively for monitoring control information. MP using channel
A method of exchanging information between U is general.

[0005]

However, the above-mentioned conventional system has the following problems. That is, the first problem is that when the MPU is a device that does not support remote monitoring and control, when performing control and monitoring of the device, a personal computer must be directly connected to the device to be monitored and controlled. Therefore, it is necessary for the observer to move to the station where the device is installed, and maintenance cannot be performed easily.

[0006] The second problem is that, in the case of a device that supports remote monitoring and control, it is necessary for each MPU to exchange information not only with its own station but also with the MPUs of all devices to be remotely monitored and controlled. That is. Therefore, the processing of the MPU increases, a high-performance MPU is required, and the monitoring cost increases. Further, the processing for this is complicated, so that the development of the device and the like becomes difficult.

[0007] A third problem is that when an apparatus which has not been provided with remote monitoring control has a function for that purpose, a dedicated communication procedure and a communication path for communication between MPUs are newly established. Is necessary. Therefore, the volume of the device change content becomes large, and in particular, changing the device operating in the field is
Realistically impossible.

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned problems, and an object of the present invention is to provide a radio apparatus and a remote monitoring control method for easily realizing low-cost remote monitoring control of a radio apparatus. It is to provide.

[0009]

In order to achieve the above object, the present invention provides a wireless device for exchanging communication data composed of a first character code using a service channel, wherein a wired port and a wireless port are provided. An interface unit for the service channel, a determination unit configured to determine whether a service channel signal in the interface unit includes a second character code other than the first character code, and Routing means for distributing a service channel signal to the wired port or the wireless port.

Preferably, the routing means is configured to perform first routing for distributing a signal from a wireless line or a wired line of the wireless device to a control unit of the wireless device, and to route a signal from the wireless line to the wired line. The second routing is performed to pass through.

[0011] Preferably, the wireless communication apparatus has at least two wired ports, one of which is connected to a corresponding wired port in the interface unit of another arbitrary wireless device, and the other is connected to a control unit of the own device. By adopting the connection configuration, data communication is performed on a one-to-one basis with the other arbitrary wireless device via the service channel.

Preferably, the first character code includes:
At least an ASCII code is included, and the second character code uses arbitrary byte data that does not overlap with byte data occupied by the ASCII code.

According to another aspect of the present invention, a wireless device having a wired port and a wireless port in an interface section of the service channel while exchanging communication data composed of the first character code using the service channel. A step of determining whether the service channel signal in the interface unit is composed of a second character code other than the first character code; and determining the service channel signal according to the determination result. Routing to a wired port or a wireless port. In the routing step, a first routing for distributing a control signal from a predetermined wireless line or a wired line to a control unit of the wireless device; Pass control signal to the above wired line Remote monitoring and control method for a wireless apparatus for performing the second routing is provided.

Preferably, the control signal is composed of a character string using an ASCII code, and in the determination step, a character string composed of arbitrary byte data other than the ASCII code is determined.

[0015]

BRIEF DESCRIPTION OF THE DRAWINGS FIG.
An embodiment of the present invention will be described in detail. FIG. 1 is a block diagram showing a configuration of the monitoring control system according to the embodiment of the present invention. In FIG. 1, the wireless devices 1 are mutually connected via a service channel (hereinafter, appropriately referred to as SC) wireless line 7. Here, this SC radio line is a digital communication system that handles digital signals.
Service channel.

The inter-device connection cable 5 is a cable for connecting the radio devices 1 to each other. The service channel (SC) interface unit 2 in each radio device 1
It is connected to the MPU 3 via the monitoring control unit connection cable 6.

Each wireless device 1 is connected to a wireless station A shown in FIG.
(Station A), radio station B (station B), and radio station C (station C). Here, device 1 is in station A, and devices 2 and 3 are in the same station. Station 4 is located at station B, and device 4 is located at station C.

The service channel (SC) interface unit 2 of the supervisory control system according to the present embodiment has a word detection function and a service channel (SC) routing function. Then, the SC interface unit 2
Has two interface ports (input / output ports) on its wired output side, one of which is connected to the same port of another device in the same station, and the other is the MPU port of its own device. Cable is connected to each.

The SC interface unit 2 also has an interface port on the wireless side, and communicates SC signals wirelessly with the opposite station via the SC wireless line 7 described above. Here, the MPU 3 uses the one developed for monitoring and control of its own station as it is, and does not particularly change or modify it for remote monitoring and control.

In the monitoring control system shown in FIG. 1, a personal computer (personal computer) 4 is connected to one of the wireless devices 1 via an SC interface unit 2.
The personal computer 4 inputs and outputs predetermined data.

In general, a wireless device often has a low-rate service channel for maintenance of the device in addition to a main signal (main signal) handled by the device. This service channel is provided by the user according to the RS-232 or RS-232 interface if the required interface is an analog signal or a digital signal.
-422, RS-485, etc. For this reason, a configuration is usually used in which the interface section of the service channel is made optional and an optional panel is mounted on the device as necessary.

Also, the user does not prepare any special tool on the interface of the MPU of the wireless device, and directly transmits alarm information and the like on the display of the personal computer using communication software which is installed as standard on the personal computer. In many cases, an ASCII (ASCII) code is used as an interface condition at the RS-232 level so that a character string can be displayed.

FIG. 2 is a block diagram showing a detailed configuration of the SC interface circuit 2 of the monitoring and control system according to the present embodiment. In the figure, the level conversion circuit 24
The level conversion circuit 25 is used for level conversion of the SC signal with the MPU 3 of the same radio apparatus, and is used for level conversion of the SC signal with another radio apparatus installed in the same station.

The word detection circuit 21 detects whether or not the SC signal arriving from the opposite station by wireless matches the word set for each wireless device. If the matching word is detected, the result is represented by: It is sent to the routing circuit 23. Similarly, the word detection circuit 22 performs word detection on the SC signal transmitted from another wireless device in the same station on the wired side, that is, the output of the level conversion circuit 24, and sends the result to the routing circuit 23. send.

FIG. 3 is a diagram for explaining the detailed operation of the routing circuit 23 in the SC interface circuit. The routing circuit 23 according to the present embodiment includes:
Based on the word detection result, three types of routing operations, which will be described in detail below, are performed.

The first routing operation is performed when the word detection circuit 21 detects the above-mentioned word coincidence. At this time, as shown in FIG.
A word is detected from the C signal, and a word detection signal is output to the routing circuit 23 ("when a word is detected on the wireless side" in FIG. 3A).

The routing circuit 23 routes the SC signal on the wireless side to the level conversion circuit 25 as shown in FIG. 3A based on the output from the word detection circuit 21. Further, as shown in FIG.
The cable-side interface port No. 5 is cable-connected to the MPU interface port. Therefore, here, the SC signal from the wireless side is connected to the MPU.

The second routing operation is an operation performed when the word detection circuit 22 detects a word match.
At this time, the word detection circuit 22 detects a word from the SC signal from the wire side, that is, the output from the level conversion circuit 24 ("when a word is detected on the wire side" in FIG. 3B). Therefore, in response to the output from the word detection circuit 22, the output of the level conversion circuit 24 is routed to the level conversion circuit 25 as shown in FIG. By this operation, the SC signal on the wired side is connected to the MPU.

The third routing operation is an operation when neither the word detection circuit 21 nor the word detection circuit 22 detects a word or detects a logout word. In this case, as shown in FIG. 3C (“when no word is detected”), the signal on the wireless side is routed to the signal on the wired side, and the SC signal is directly (through), and the next signal is passed through. Pass through wireless device.

In the word detection circuit of each wireless device, by setting each word to a different word, the first routing operation and the second routing operation do not occur simultaneously in a plurality of devices. Therefore, the control signal transmitted from the personal computer transmitted via the SC signal can communicate only with the MPU of any one wireless device. Remote monitoring control becomes possible.

Usually, communication between the personal computer 4 and the MPU 3 is performed using ASCII codes. ASCII code is 00h-7
Only Fh ("h" means hexadecimal) has been assigned (assigned).
Normally, data of 80h to FFh is not exchanged. Therefore, in the monitoring control system according to the present embodiment, by setting an arbitrary value in the range of 80h to FFh as the detection word, the routing does not malfunction due to normal data.

When setting words (80h to FFh) are transmitted from a personal computer to switch the routing circuit, one byte of the setting words (for example, 80h) is stored as a binary file. Then, it can be easily switched by transmitting it using general-purpose communication software using a binary file transmission function.

When saving a binary file,
By setting the file name to, for example, the name of a station, it becomes easier for the handling person to understand the file to be transmitted, so-called human error (artificial error).
Can be prevented.

As described above, according to the present embodiment, even in a wireless device that can monitor and control only its own station, the service channel interface unit has a word detection function and a service channel signal routing function. Monitoring and control of a remote device can be easily performed.

That is, the interface section of the service channel in the wireless device has a function of detecting a control signal from the personal computer (word detection) and a routing function of switching the destination of the personal computer control signal based on the detection result. By adopting a configuration in which the independent service channel interface unit and the control unit (MPU) are connected, even when the MPU and the personal computer only support monitoring and control of the communication device of the own station, For example, by changing the option panel of the service channel section and simply changing the wiring outside the device, it is possible to remotely monitor and control the wireless device using the existing MPU and personal computer.

Normally, a service channel that passes through between wireless devices is routed to the MPU unit only when it matches a specific word set in the own device, so that it can communicate with the MPU of the remote device. Personal computers can communicate one-on-one, and can monitor and control in the same manner as their own stations.

Furthermore, since word transmission from a personal computer to a word detection circuit is possible using the binary file transmission function of general-purpose communication software, dedicated communication software for monitoring and control becomes unnecessary, and monitoring and maintenance costs are greatly reduced. it can.

[0038]

As described above, according to the present invention,
It is determined whether or not the service channel signal of the interface unit having the wired port and the wireless port is a signal including a character code other than a predetermined character code, and the service channel signal is transmitted to the wired port or the wireless port according to the determination result. Even if a wireless device that can be monitored and controlled only by its own station can be provided with a word detection function and a service channel signal routing function in the service channel interface, it is easy to monitor and control a remote device. Becomes possible.

Further, one of the at least two wired ports is connected to an interface of any other wireless device.
By connecting to the corresponding wired port and connecting the other to the control unit of the own device, one-to-one data communication is performed with another arbitrary wireless device via the service channel in the same manner as the control of the own device. be able to.

[Brief description of the drawings]

FIG. 1 is a block diagram showing a configuration of a monitoring control system according to an embodiment of the present invention.

FIG. 2 is a block diagram showing a detailed configuration of an SC interface circuit of the monitoring control system according to the embodiment.

FIG. 3 is a diagram illustrating a detailed operation of the routing circuit according to the embodiment;

FIG. 4 is a block diagram illustrating an example of a monitoring control system according to a conventional method.

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 wireless device 2 service channel (SC) interface unit 3 monitoring control unit 4 personal computer 5 device connection cable 6 monitoring control unit connection cable 7 service channel wireless line 21, 22 word detection circuit 23 routing circuit 24, 25 level conversion circuit

Claims (9)

[Claims] 1. A wireless device for exchanging communication data including a first character code using a service channel, comprising: a service channel interface unit having a wired port and a wireless port; and a service channel in the interface unit. Determining means for determining whether the signal is composed of a second character code other than the first character code; and routing means for distributing the service channel signal to the wired port or the wireless port according to the determination result. A wireless device, comprising: 2. The control apparatus according to claim 1, wherein the service channel signal is a predetermined control signal input from a data terminal device connected to the interface unit via a wired line, or a control signal transmitted from another wireless device via a wireless line. The wireless device according to claim 1, wherein the wireless device is a signal. 3. The first routing for distributing a signal from the wireless line or the wired line to a control unit of the wireless device, and a second routing for passing the signal from the wireless line to the wired line. 3. The wireless device according to claim 2, wherein routing is performed. 4. It has at least two said wired ports,
One is connected to a corresponding wired port in the interface unit of any other wireless device, and the other is
4. The wireless device according to claim 3, wherein the wireless device performs data communication one-to-one with the other wireless device via the service channel by being configured to be connected to a control unit of the own device. 5. The first character code includes at least an ASCII code, and the second character code uses arbitrary byte data that does not overlap with byte data occupied by the ASCII code. Claim 2
A wireless device as described. 6. The control signal comprises a character string using the ASCII code, and the determining means determines a character string composed of arbitrary byte data other than the ASCII code. 5. The wireless device according to 5. 7. The wireless communication system according to claim 1, wherein the data terminal device inputs the control signal using a binary file transmission function of general-purpose communication software installed in the device. apparatus. 8. A method for remotely monitoring and controlling a wireless device that exchanges communication data composed of a first character code using a service channel and has a wired port and a wireless port in an interface of the service channel. Determining whether the service channel signal in the interface unit is composed of a second character code other than the first character code; and routing the service channel signal to the wired port or the wireless port according to the determination result. Performing a first routing for distributing a control signal from a predetermined wireless line or a wired line to a control unit of the wireless device, and a control signal from the wireless line to the wired line. Execute the second routing to be passed A remote monitoring control method for a wireless device. 9. The control signal is formed of a character string using an ASCII code, and in the determining step, a character string composed of arbitrary byte data other than the ASCII code is determined. A remote monitoring control method for a wireless device according to claim 1.