JPH0783391B2 - Failure information transmission method - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Outline] The present invention is a fault information transmission method for an information transmission device, in which a fault occurrence and a fault condition are easily and quickly detected at a receiving side by transmitting a fault content using an information data section. It makes it possible.

[Industrial application field]

The present invention, for example, when an information transmission device using a microprocessor has an input conversion unit that is separated from the transmission control unit in terms of hardware, when the input conversion unit fails, the transmission control unit The present invention relates to an improvement in a method of transmitting fault information to a transmission device on the receiving side via a section.

When transmitting such fault information, it is desirable to provide a fault information transmitting method that does not require extra words for transmitting the fault signal, has good transmission efficiency, and does not increase the amount of equipment, and that allows easy and immediate fault analysis.

[Conventional technology]

For example, in an information transmission device, an input conversion unit has an analog-digital conversion circuit, an oscillation circuit, etc. However, when a failure occurs in such a circuit unit in the related art, the information to be sent from the input conversion unit having the failure unit is stopped, A predetermined synchronization signal is transmitted as failure information via a dedicated device provided with failure information separately.

FIG. 4 shows a conventional example of such a fault information transmission system. In the figure, 1 is an information transmission device on the transmission side, 2 is an information transmission device on the reception side, 11 and 21 are transmission control units 13 and 14, input conversion units,
Reference numerals 12 and 22 denote failure information transmission units, and 4 and 3 denote transmission information signals.

If a failure occurs in one input conversion unit 14, information from the input conversion unit 14 to the transmission control unit 11 is stopped, so that the transmission information signal 4 becomes an empty word.

The fault information in the input conversion unit 14 is sent in the form of a synchronization signal to the dedicated fault information transmission units 12 to 22 via the dedicated fault information transmission line.

FIG. 5 is a flow chart of the above-mentioned failure detection processing on the receiving side. When there is an input to the input converter 11, 14, an error trace is made as to whether the oscillator and A / D converter in the input section are operating normally.If there is no error, data is read and data transmission is performed. If there is a failure in the area, the empty word is transmitted and an alarm is output.

This empty word informs the receiving side that some abnormality has occurred in the transmitting side device. When the processing of one input conversion unit is completed, the processing of the next input conversion unit is performed.

However, in order to detect the failure status, an alarm output unit is provided to take out and collect it externally, or the transmission information is stored in the memory and the failure content is known by analyzing and examining the memory content, or the transmission information format It is necessary to detect the fault content by taking measures such as adding a special fault notification word inside.

[Problems to be solved by the invention]

In the above conventional method, when an alarm is output to the outside, a dedicated alarm collection facility must be provided in order to take out the alarm.
When the amount of equipment increases and the method of analyzing the contents stored in the memory is used, maintenance personnel must be mobilized and complicated analysis work is required, which makes imperfect diagnosis of failures and adds a special word for failure notification. Each of the methods has a problem in that the efficiency of the transmission is lowered by reducing the amount of information used for transmission in a normal state, and any of the methods has a problem.

[Means for solving problems]

The above problem is caused by setting a flag bit provided for indicating a failure in the information format and setting a bit of the data part of the information format corresponding to the failure part, thereby obtaining the status of the flag bit and the information. According to the contents of the data part in the format, the problem information transmission method according to the present invention for transmitting the problem information is solved.

[Action]

According to the present invention, the flag bit in the information format notifies the occurrence of a failure by setting the bit to 1 or 0, and transmits the failure information by mounting the failure information on the data portion to which the data information code at the time of failure is not transmitted. It is possible to realize a fault information transmission method in which the contents of the fault state can be immediately understood without adding extra words.

〔Example〕

Hereinafter, the gist of the present invention will be described in detail with reference to the illustrated embodiments.
FIG. 1 is an explanatory diagram of a transmission information format structure of the present invention,
FIG. 2 is a block diagram of the information transmission system of the present invention,
FIG. 3 shows a flow chart of failure processing of the input conversion unit of the present invention. In FIG. 2, the components corresponding to those in FIG. 3 are designated by the same reference numerals.

FIG. 1 (a) is a general configuration diagram of an information format used in the present invention. The information format has an address section 7, a flag bit section 8 and a data section 9. The information format is provided with a flag bit 8 according to the invention.

FIG. 1B is a configuration diagram of a general information signal in a normal state. The normal-time flag bit 8 is 0, and the data portion has a data signal, in this example, a BCD 3-digit numerical value.

FIG. 1 (c) is a block diagram of the information format at the time of a failure, the flag bit 8 is changed to 1 when the failure occurs, and the failure notification information signal is transmitted by the data section. The contents of the failure can notify, for example, the oscillation stop of the input converter, the failure of the A / D converter, etc., depending on the bit position of the data word.

The operation of the system of the present invention will be described with reference to FIG. In the figure, reference numerals 1 and 2 denote information transmission devices, the former being the transmitting side and the latter being the receiving side.

When a failure occurs in the input conversion unit 14, the contents of the failure are written in the corresponding bits in the data section of the format, and the flag bit is set. Although it has the normal format shown in b), the transmission information 6 of the input converter 14 has the format shown in FIG. 1 (c) when a failure occurs. Since an individual part such as the input conversion part does not stop the operation of the information transmission device, the flag bit is converted to 1 so that the receiving side can recognize that the word to be transmitted is a fault notification.
In addition, the fault content notification information is added to the data section, and the transmission control section
From 11 to the information transmission device 2 on the receiving side.

On the receiving side, the flag bit is 1 indicating that it is a failure notification.
Therefore, the data section performs the failure analysis together with the information reception.

As shown in FIG. 3, the flow of the failure information transmission processing is, as in FIG. 5, an error trace is made in each circuit portion of the input conversion portion, and when there is a failure, the present invention allows the data portion of the transmission information format to be displayed. Failure information is created, flag bits are set, and then transmitted.

〔The invention's effect〕

As described above, the failure information transmission method according to the present invention does not cause an increase in the amount of equipment, does not reduce the transmission efficiency, and enables failure analysis quickly and immediately, and its action and effect are extremely large. .

[Brief description of drawings]

FIGS. 1 (a) to 1 (c) are one embodiment of a transmission information format according to the present invention. FIG. 1 is a block diagram showing the format of a normal state and a fault state, and FIG. 2 is a block configuration diagram of an information transmission system of the present invention. 3 is a flow chart of fault information transmission processing according to the present invention in the input conversion apparatus, FIG. 4 is a block configuration diagram of a conventional example of the fault information transmission method, and FIG. 5 is a fault information transmission processing by the conventional method in the input conversion apparatus. The flow chart of is shown. In the figure, 1 is a transmitting side, 2 is a receiving side information transmission device, 3, 4, 5,
6 is a transmission information signal, 7 is an address section of the transmission information format, 8 is a flag bit of the transmission information format, 9 is a data section of the transmission information format, 11 and 21 are transmission control sections, 12 and 22 are fault information transmission sections, Reference numerals 13 and 14 are input conversion units.

Claims (1)

[Claims] 1. The status of the flag bit and the information are set by setting a flag bit provided for indicating a failure in the information format and setting a bit of the data part of the information format corresponding to the failure part. A fault information transmission method characterized in that fault content information of a device is transmitted based on the contents of a data section in the format.