JPH04248648A - Environmental temperature monitor method for loop interface device - Google Patents

Abstract

PURPOSE:To prevent trouble of a loop interface device due to the abnormality of the environmental temperature by detecting it by a loop monitor device that the environmental temperature of the loop interface device is abnormal. CONSTITUTION:If the environmental temperature in a loop interface device 2a detected by a temperature check part 20a exceeds a preliminarily determined prescribed temperature stored in the temperature check part 20a, a signal indicating this state is outputted to a frame operation part 24a. The frame operation part 24a receives this signal to generate a preliminarily determined frame signal and sends it to a loop monitor device 1, and a frame operation part 13 discriminates this frame signal to send a signal, which indicates that the environmental temperature of the loop interface device 2a is abnormal, to a picture display part 14, and this signal is displayed on the picture display part 14.

Description

[Detailed description of the invention]

0001

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for monitoring the temperature of a loop interface device, and particularly to a method for monitoring the temperature of a loop interface device in a loop network system consisting of a plurality of loop interface devices and loop monitoring devices individually connected to an information processing terminal. Regarding a temperature monitoring method for a loop interface device that detects and displays temperature abnormalities

2. Description of the Related Art FIG. 3 shows loop interface devices 4a and 4b.
1 is a block diagram showing an example of a conventional loop network system in which a loop monitoring device 1 and a loop monitoring device 1 are connected in a loop. Loop interface device 4a in this figure
and 4b have the same configuration. Information processing terminals 5a and 5b are connected to the frame operation units 44a and 44b of the interface devices 4a and 4b, respectively. It is assumed that the information processing terminals 5a and 5b are information processing devices each having a unique function, and for example, the information processing terminal 5a is an information processing terminal that stores a large amount of specific data. From the information processing terminal 5b to the loop interface device 4b
When a request is issued to the frame operating unit 44b in the information processing terminal 5b to send specific data in the information processing terminal 5b, this request is identified by the frame operating unit 44b and determined in advance. A signal according to the frame configuration (hereinafter referred to as a frame signal) is generated by the frame operation section 44b and sent to the frame transmission section 22b.
added to. The frame transmitter 22b sends this frame signal to the frame receiver 2 of the loop interface device 4a.
Send to 3a.

FIG. 2 is an explanatory diagram showing an example of the structure of a frame signal, which is also used in the loop network system shown in FIG. 3 and the loop network system to which the method of the present invention, which will be described later, is applied. The frame signal includes a start delimiter item (SD) 31 into which a code indicating the start of the frame signal is inserted, and a destination address item (DA) into which a code identifying the destination address is inserted.
) 32, a source address item (SA) 33 into which a code for identifying the source address is inserted, a control code item (CTL) 34 for identifying the content of the frame signal, and indicating the status of the content of the frame signal. It consists of a data item (I) 35 for inserting a code, an FCS item 36 used for bit error checking of this frame signal, and an end delimiter item (ED) 37 indicating the end of this frame signal. Configure a frame signal. In addition, Figure 3
The loop network system shown in Figure 1 has two loop interface devices 4a and 4b, but it does not include any plurality of loop interface devices and information processing terminals connected to each of these loop interface devices. You can also configure a loop network system.

The frame signal generated by the frame operation section 44b mentioned above and sent out from the frame transmission section 22b is also input to the frame reception section 23a in the loop interface device 4a as the frame signal explained in FIG. It is added to the operating section 44a. The buffer memory 21a temporarily stores this signal. The frame operation unit 44a identifies the code of the destination address field 33 of the input frame signal, and if the frame signal is addressed to this loop interface device 4a, it further transmits CTL3.
4 and I33, and outputs a signal corresponding to the identified content to the information processing terminal 5a. For example, if the received frame signal requests transmission of specific data from the information processing terminal 5b described above, a signal corresponding to this request is transmitted from the frame operation unit 44a to the information processing terminal 5.
It will be output to a. If the information processing terminal 5a performs an operation based on the received frame signal in this way and there is no need to transfer this frame signal to the outside, the control signal from the frame operation section 44a is transferred to the buffer memory 2.
1a and temporarily stored in the buffer memory 21a is erased.

[0004] When the transmission destination of the frame signal mentioned above is not the loop interface device 4a including the frame manipulation section 44a, the frame manipulation section 44a is transmitted to the information processing terminal 5a.
It outputs no signal to the buffer memory 21a and the frame transmitter 22a, and outputs this frame signal temporarily stored in the buffer memory 21a to the outside. Therefore, the loop interface device 4
If the frame signal output from b is addressed to the loop monitoring device 1, this frame signal is input to the frame receiving section 12 via the loop interface device 4a. The frame signal input to the frame receiving section 12 is temporarily stored in the buffer memory 10, and is input to the frame analysis section 15. If the signal is addressed to the loop monitoring device 1, the contents of the signal are further identified, and the signal is output as a signal that can be displayed as an image and is added to the image display unit 14, where the image is displayed. That will happen. In the case of such a frame signal, the frame analysis section 15 sends a control signal to the buffer memory 10 to erase the above-described frame signal temporarily stored in the buffer memory 10. if,
If the frame signal input to the frame analysis unit 15 via the frame reception unit 12 is not addressed to the loop monitoring device 1, the frame analysis unit 15 sends a control signal to the buffer memory 10, and the frame signal is temporarily stored in the buffer memory 10. The frame signal is outputted to the outside via the frame transmitter 11.

The loop monitoring device 1 receives frame signals related to the operating states of the information processing terminals 5a and 5b sent from the loop interface devices 4a and 4b, and displays the operating states of the information processing terminals 5a and 5b on the image display section 14. indicate. In conventional loop network systems of this type, the environmental temperature of the loop interface device was not monitored.

[0006]

[Problem to be Solved by the Invention] When the above-mentioned loop interface device is placed in an environment where the temperature exceeds a certain temperature, it usually causes thermal runaway and is no longer able to operate normally. Also, if the loop interface is placed below a certain environmental temperature, it may not be able to operate normally. Furthermore, the loop interface devices are usually installed at different locations, and the locations are often unmanned. In a loop network system configured with such a conventional loop interface device and loop monitoring device, it is impossible to detect that the environmental temperature inside the loop interface device has reached an unacceptable temperature.
There has been a drawback in that it is impossible to prevent failures of the interface device caused by such environmental temperatures. Furthermore, there is a drawback that if one of such loop interface devices performs an abnormal operation, the operation of the entire loop network becomes abnormal. An object of the present invention is to monitor the environmental temperature of a loop interface device constituting a loop network system, and if there is an abnormality in the temperature environment, the loop monitoring device displays an image of the temperature abnormality, thereby improving the temperature of the loop interface device. An object of the present invention is to provide an environmental temperature monitoring method for a loop interface device that can prevent a failure of the loop interface device due to an abnormality in the environmental temperature.

[0007]

[Means for Solving the Problems] The environmental temperature monitoring method for a loop interface device of the present invention comprises a loop interface device and a loop monitoring device each individually connected to a plurality of information processing terminals that are distributed. , the loop interface device and the loop monitoring device are connected in a loop, and the loop interface device includes an item for identifying a sending source, an item for identifying a sending destination, an item for identifying a content to be sent, and an item for identifying a sending content. A signal having a frame structure including predetermined items in a predetermined order, including an item indicating the state of the content, is used between the information processing devices and between the information processing device and the loop monitoring device. In the method for monitoring the environmental temperature of a loop interface device of a loop network system in which information is sent and received in a time-sharing manner and the operating status of the information processing terminal is monitored by the loop monitoring device via the loop interface device, A code for identifying a temperature abnormality is provided in an item for identifying the content of the signal to be sent out in the item of the signal, and a code for identifying an excess of a specified temperature is provided in an item for indicating the state of the content to be sent out in the item for the frame configuration. and detecting the environmental temperature inside each loop interface device, comparing the detected environmental temperature with a preset specified temperature, and determining that the temperature is abnormal if the detected environmental temperature exceeds the specified temperature. A predetermined code indicating that the specified temperature has been exceeded is generated and inserted into the item indicating the content to be sent, and the loop interface device that has detected the temperature abnormality The code for identifying the temperature abnormality is generated and inserted in the content to be sent, and the code for identifying the loop interface device that has detected the temperature abnormality is generated and inserted in the item for identifying the sending source. , a predetermined code indicating the loop monitoring device is generated and inserted in the item indicating the sending destination, and a code including all of these items is inserted.
The loop interface device that detected the abnormality generates a signal consisting of two frames and sends it to the loop monitoring device through the loop connection, and the loop monitoring device indicates the content to be sent in the signal having the frame structure. The items are analyzed, and when the item indicating the content to be sent indicates a temperature abnormality, the sending source is identified from the item indicating the sending source, and the item indicating the status of the sending content is determined to indicate that the content status is at a specified temperature. It consists of a method of identifying whether the loop monitoring device exceeds the limit and displaying the identified information on an image display screen constituting the loop monitoring device.

[0008]

Embodiments Next, embodiments of the present invention will be described with reference to the drawings.

FIG. 1 is a block diagram showing an embodiment of a loop network system to which the temperature monitoring method of the loop interface device of the present invention is applied, and FIG. 2 shows the structure of a frame signal generated by the loop interface device of FIG. It is an explanatory view showing one example. The configuration and most of the components of the loop network system shown in FIG. 1 are the same as the configuration and components of the loop network system already explained in FIG. This will be explained below.

In FIG. 1, temperature investigation sections 20a and 20b are provided in loop interface devices 2a and 2b, respectively. The temperature checking section 20a detects the environmental temperature inside the loop interface device 2a and compares it with a pre-stored specified temperature.If the detected temperature exceeds the specified temperature, the temperature checking section 20a detects the specified temperature. A detection signal indicating that the limit has been exceeded is outputted to the frame operation section 24a. The specified temperature of the temperature investigation section 20a described above may be set, for example, to the highest environmental temperature at which the loop interface device 2a can operate normally. The frame operating section 24a is additionally provided with the following functions in addition to the functions of the frame operating section 44a shown in FIG. When a detection signal indicating that the loop interface device 2a has been detected as a frame signal is received, a predetermined identification code for identifying the loop interface device 2a is transmitted as a frame signal to the DA32 in the frame configuration 3 shown in the explanatory diagram of FIG.
For SA33, a predetermined identification code that identifies the loop monitoring device 1, for CTL34, a predetermined identification code that indicates a temperature abnormality, and for I35, a predetermined identification code that indicates that the detected temperature exceeds the specified temperature. The buffer memory 21a generates predetermined codes shown in FIG. This frame signal is output from the frame transmitter 22a to the outside.

The upper limit temperature at which the loop interface device 2b can operate normally is stored in advance as a specified temperature in the loop interface device 2b, and the environmental temperature of the loop interface device 2b is detected, and the detected temperature is determined as described above. A temperature investigation unit 20b is provided which sends a signal indicating that the environmental temperature has exceeded the specified temperature to the frame operation unit 24b when the specified temperature is exceeded, and when a detection signal indicating that the specified temperature has been exceeded is received. The frame operating section 24b is provided with a function similar to the above-described frame operating section 24a to generate a frame signal indicating that the environmental temperature within the loop interface device 2b is abnormal.

In addition to the functions of the frame analysis section 15 used in the block diagram of FIG. When the aforementioned frame signal indicating that the environmental temperature is abnormal is applied to the frame analysis unit 13 through the frame receiving unit 12 of the loop monitoring device 1, it is determined that the environmental temperature within the loop interface device that sent this frame signal is abnormal. A function is added to generate a signal indicating a certain fact and display it on the image display section 14 in addition to the image display section 14.

By adding such a function, the loop monitoring device 1 can control the loop interface device 2a.
If the environmental temperature of 2b and 2b rises abnormally, this state can be detected.

If at least one of the loop interface devices 2a or 2b, for example, the loop interface device 2a
If the environmental temperature of the loop interface device 2a is a low temperature that does not reach a certain temperature lower than the above-mentioned specified temperature, and the operation becomes abnormal, the above-mentioned specified temperature is set as the first specified temperature, and the loop interface device 2a operates normally. The lowest environmental temperature that can be detected is set as the second specified temperature, and the following functions are added to the functions of the temperature investigation section 20a described so far. In other words, the environment temperature detected by the temperature investigation section 20a is set as the second specified temperature. A function is added to the temperature investigation section 20a to generate a detection signal indicating that the environmental temperature has not reached the second specified temperature and output it to the frame operation section 24a when the second specified temperature has not been reached. Furthermore, the frame operation section 24
In addition to the functions already explained, the following function is added to a. That is, when the above-mentioned detection signal that the environmental temperature does not reach the second specified temperature is received, the environmental temperature is sent to the CTL 34 of frame configuration 3. A frame signal is generated in which a predetermined code indicating that is abnormal is inserted, and a predetermined code indicating that the environmental temperature of the loop interface device has not reached the second specified temperature is inserted in I35. A function for sending the frame to the loop monitoring device 1 through the frame transmitting section 22a is added to the frame operating section 24a. Further, when the frame analysis section 13 receives a frame signal indicating that the environmental temperature does not reach the second specified temperature mentioned above via the frame reception section 12, the frame analysis section 13 identifies the code in this frame signal and sends the signal to the loop interface device 2a. A function is added to the frame analysis section 13 to generate a signal to send a display to the image display section 14 indicating that the environmental temperature of the frame does not reach the second specified temperature. By providing such a function to the frame operation section 24a and the frame analysis section 13, when the environmental temperature of the loop interface device 2a reaches the second specified temperature, the loop monitoring device 1 can display the status. Can be done.

[0015]

[Effects of the Invention] As explained above, the temperature monitoring method for a loop interface device of the present invention allows the loop monitoring device to display the status when the environmental temperature of the loop interface device becomes abnormal. A loop in which the operator discovers an abnormality in the environmental temperature from the display on the loop monitoring device before the operation of the loop interface device that makes up the loop network system becomes abnormal due to the environmental temperature. Since it is possible to take measures to return the environmental temperature of the interface device to a normal state, it is possible to prevent failures of the loop interface device due to the environmental temperature.

[Brief explanation of the drawing]

FIG. 1 is a block diagram showing an embodiment of a loop network system to which a temperature monitoring method for a loop interface device of the present invention is applied.

FIG. 2 is an explanatory diagram showing the structure of an example of a frame signal used in FIGS. 1 and 3;

FIG. 3 is a block diagram showing an example of a loop network system using a conventional loop interface device to which a temperature monitoring method is not applied.

[Explanation of symbols]

1 Loop monitoring device 2a, 2b Loop interface device 3
Frame configuration 13 Frame analysis section 24a Frame operation section

Claims (2)

[Claims] 1. A system comprising a loop interface device and a loop monitoring device each individually connected to a plurality of information processing terminals arranged in a distributed manner, the loop interface device and the loop monitoring device being connected in a loop. , predetermined items including an item for identifying the sending source, an item for identifying the sending destination, an item for identifying the content to be sent, and an item indicating the status of the content to be sent are preset via the loop interface device. The information processing apparatus transmits and receives information between the information processing apparatuses and between the information processing apparatus and the loop monitoring apparatus in a time-sharing manner using signals having a frame structure including signals in a predetermined order, and the loop monitoring apparatus transfers information to the loop interface apparatus. In the environmental temperature monitoring method of a loop interface device of a loop network system that monitors the operating status of the information processing terminal via a A code for identifying an abnormality is provided, a code for identifying an excess of a specified temperature is provided in an item indicating a state of the content to be sent among the items of the frame configuration, and an environmental temperature inside each of the loop interface devices is detected, The detected environmental temperature is compared with a preset specified temperature, and if the detected environmental temperature exceeds the specified temperature, a temperature abnormality is detected. Generating and inserting a predetermined code indicating that the temperature exceeds a specified temperature, and generating and inserting the code identifying the temperature abnormality into the content to be sent in the loop interface device that detected the temperature abnormality. A code for identifying the loop interface device that detected the temperature abnormality is generated and inserted in the item identifying the sending source, and a predetermined code indicating the loop monitoring device is inserted in the item indicating the sending destination. the loop interface device that detected the abnormality sends it to the loop monitoring device through the loop connection; The loop monitoring device analyzes the item indicating the content to be sent in the signal of the frame structure, and when the item indicating the content to be sent indicates a temperature abnormality, the sending source is identified from the item indicating the sending source, and the sending source is identified from the item indicating the sending source. It is characterized by identifying that the content status exceeds a specified temperature from an item indicating the status of the transmitted content, and displaying the identified information in the form of an image display screen constituting the loop monitoring device. A method for monitoring the environmental temperature of a loop interface device. 2. The information processing apparatus comprises a loop interface device and a loop monitoring device each individually connected to a plurality of information processing terminals arranged in a distributed manner, and the loop interface device and the loop monitoring device are connected in a loop. , predetermined items including an item for identifying the sending source, an item for identifying the sending destination, an item for identifying the content to be sent, and an item indicating the status of the content to be sent are preset via the loop interface device. The information processing apparatus transmits and receives information between the information processing apparatuses and between the information processing apparatus and the loop monitoring apparatus in a time-sharing manner using signals having a frame structure including signals in a predetermined order, and the loop monitoring apparatus transfers information to the loop interface apparatus. In the environmental temperature monitoring method of a loop interface device of a loop network system that monitors the operating status of the information processing terminal via a code for identifying a temperature abnormality in an item for identifying the content to be sent in the item of the frame configuration, and a code identifying that the first specified temperature is exceeded and a code identifying that the temperature is below the second specified temperature that does not reach the first specified temperature in the item indicating the state of the content to be sent in the items of the frame configuration. detecting the environmental temperature inside each loop interface device, comparing the detected temperature with a preset first specified temperature, and determining a second specified temperature that does not reach the first specified temperature; If the detected temperature exceeds the first specified temperature, a predetermined value indicating that the first specified temperature has been exceeded is included in the item indicating the content to be sent. A code is generated and inserted, and when the detected temperature does not reach the second specified temperature, the second code is included in the item indicating the content to be sent.
generate and insert the code for identifying that the detected temperature is below the first specified temperature, and when the detected temperature exceeds the first specified temperature and when the detected temperature does not reach the second specified temperature; In some cases, the loop interface device that has detected the environmental temperature generates and inserts the code that identifies the temperature abnormality into the content to be sent, and the code that identifies the temperature abnormality is included in the item that identifies the sending source. A code for identifying the loop interface device is generated and inserted, a predetermined code indicating the loop monitoring device is generated and inserted in the item indicating the destination, and a code for identifying the loop interface device is generated and inserted from one frame including all of these items. The loop interface device that has detected the temperature abnormality generates a signal and sends it to the loop monitoring device through the loop connection, and the loop monitoring device selects an item indicating the content to be sent in the signal of the frame structure. When the item indicating the content to be sent indicates a temperature abnormality, the sending source is identified from the item indicating the sending source, and the item indicating the state of the sending content indicates that the content state is at the first specified temperature. The loop monitoring device is configured to identify whether the detected temperature exceeds a second specified temperature or whether the detected temperature has not reached a second specified temperature, and uses the identified information to configure the loop monitoring device. A method for monitoring an environmental temperature of a loop interface device, characterized by displaying it on an image display screen.