JPS62102646A - Self-diagnosis system - Google Patents

Abstract

PURPOSE:To attain automatic discrimination whether or not the entire system is normal by allowing a central controller to apply polling to a terminal equipment at a proper interval and allowing the terminal equipment to return unconditionally corresponding thereto. CONSTITUTION:A radio equipment 1, a display device 3 and an operation device 4 are connected to the central controller 2 so as to attain data transmission optionally. The controller 2 applies polling to the terminal equipment at a proper interval and a function is provided, which discriminates the terminal equipment to be normal when the reply is returned unconditionally and to be faulty when no reply comes. When the system operation is not normal even if each device is normal, normal mode information is added to the polling data, the terminal equipment receiving the said information changes its own mode based on the information and the result is included in the reply. Thus, the detection of a faulty device is facilitated and the automatic restoration of the deviation from the mode at every device is attained.

Description

[Detailed Description of the Invention] (Technical Field) This invention automatically determines whether a system consisting of a central control unit and terminal devices connected to the central control unit is operating normally, and also detects abnormalities in the system. relates to a self-diagnosis method for automatic recovery.

(Prior art and its problems) There are 9 self-diagnosis methods that have been used in the past, such as checking whether the output signal of the device is routed to the input signal terminal to check whether the signal output is being performed correctly or not. In the installed equipment, methods are being considered to check whether abnormal interrupts occur to the CPU, detect memory area accesses to areas where no memory is installed, and add a watchdog timer circuit to detect CPU runaway. If a device detects an abnormality through self-diagnosis, it will display an alarm or automatically perform a general reset.

This type of self-diagnosis method is considered for each device, and is effective when the system consists of one device, but it is effective when multiple devices are connected to form a single system. Sometimes it's not enough. For example 7
If one of the devices that make up the system completely goes down and the self-diagnosis function and automatic recovery function added to the device do not work, the system may not operate even though the other devices are operating normally. is not performed normally and the system goes down. At this time, if there is no way to easily determine which device is abnormal, it will take time to find the cause, and the problem will arise that it will not be possible to shorten the system recovery time. Another example is that individual devices that make up the equipment are operating normally, but if there is a device that is in a mode that deviates from the mode that it should be with respect to the mode of the entire system.
As in the previous example, the entire system does not operate correctly, leading to system failure. In this case, all individual devices appear to be operating normally, making it even more difficult to discover the cause of the abnormality than in the previous example.

(Purpose) The present invention is characterized in that the operation of other terminal devices can be checked from the central control device that constitutes the system, and its purpose is to comprehensively self-diagnose the system and detect abnormalities from the perspective of the entire system. The goal is to make it possible.

Another object of the present invention is to prevent the mode shift of one individual device by having the central control unit transmit current mode information to other devices.

(Example) In a system consisting of a device that centrally controls the system and a plurality of terminal devices that are connected to this central control device and can arbitrarily transmit data with the central control device, if any of the terminal devices that make up the system In order to easily detect when the system goes down, the system is equipped with a function that allows the central control unit to perform boring tests on each terminal device at appropriate intervals, and determines terminal devices that do not respond as abnormal. be.

In addition, even if each piece of equipment is operating normally, if the overall mode and the mode of a certain piece of equipment no longer match and the system operation becomes abnormal, the current boring data from the central control unit mentioned above may be The terminal device that receives the data compares its own mode with the mode of the received data, and if they are different, shifts its own mode to the mode of the received data, and also notifies the user of the mode. is included in the answer back to the central control unit, thereby enabling automatic system mode recovery and abnormality detection.

This invention will be explained below with reference to FIGS. 1, 2, and 3.

FIG. 2 shows an example of the configuration of the present invention, in which the central controller 2 has a wireless device 19.
Display 3. The controller 4 is connected.

The radio 9 display and controller can transmit data to the central control unit at any time. This operation will be explained below with reference to FIGS. 1 and 3. FIG. 3 is a state transition diagram of this system, and there are three modes: 11 is an idle mode in which the system is not doing anything, 12 is a reservation mode, and 13 is a call mode. The system is normally in idle mode 11, at which time radio 1 stops functioning.

The light indicator 3 displays an idle mode. When a call request operation is made from the operating device 4, this data is transmitted to the central control unit 2, and the central control unit 2, which receives the data, transmits a command to the radio device 1 to start a call operation. Upon receiving this, radio device 1 checks the line, and if it is free, it enters call mode via route 19, and if it is blocked, it enters reservation mode 12 via route 16, and then continues if the line is free. Start the operation to check. Call mode 1 that allows you to talk to other radios via route 17 when the line is free.
Enter 3. If the line is not free even after a certain period of time has elapsed after entering the reservation mode 12, the system returns to the idle mode 11 via a route 15 and transmits data to that effect to the central control unit 2. In response to this, the central control device transmits this data to the operating device 41 and display 3.

The entire system is initialized and returns to idle mode 11. When a certain period of time has elapsed after the system entered the call mode 13, the central controller 2 switches the radio 1. The controller 49 transmits idle mode transition command data to the display 3, and the entire system enters the idle mode 11.

In a system that performs the above operations, for example, if the operating device 4 goes down, even if a call request operation is performed from the operating device, the system will not change from the idle mode and will go down. At this time, if things remain as they are, the radio, central control unit,
It is not easy to determine which controller is abnormal. Here, when the boring data 9 shown in FIG. 1 is transmitted from the central controller 2 to the operating device 4, the answer back 1o is
should be returned, but if this is not returned, an abnormality in the operating device can be detected. Also, if the system is in call mode and the display unit 3 is in idle mode, it will appear that it will not go into call mode forever, and if left unattended, you will not be able to tell that it is in an abnormal state. Become. At this time, when the central control unit 2 transmits the bowling data 7 to the display 4, the display 9 changes its mode to the talk mode and returns an answerback containing information to that effect.

This makes it possible to automatically recover from an abnormality in the system mode.

(Effects) According to the present invention, when a device goes down in a system consisting of multiple devices, it becomes possible to easily detect which device has gone down, and it is possible to easily detect which device has gone down. Even if something happens, it can be automatically restored.

[Brief explanation of drawings]

FIG. 1 is a time chart of boring data transmission according to an embodiment of the present invention, FIG. 2 is a system configuration example of the present invention, and FIG. 3 is a state transition diagram of system modes of the present invention. 1: Radio, 2: Central control unit, 3: Display. 4: Operator, 5, 7, 9: Boring data, 6, 8:
Answer back, 10: No answer back due to device failure, 11: Idle 7-rd, 12: Reservation mode. 13: Call mode.

Claims (1)

[Claims] 1) In a system consisting of a central controller that controls the system and a plurality of terminal devices that can arbitrarily transmit data to the central controller, the central controller A self-diagnosis method that is characterized by being able to automatically determine whether the entire system is normal by boring each terminal device one by one, and in response, the terminal device unconditionally returns an answer. . 2) The terminal device that receives the mode information included in the boring data checks the validity of its own mode based on this information, and if it is abnormal, shifts to the correct mode and automatically recovers, changing the system mode. The self-diagnosis method according to claim 1, characterized in that the self-diagnosis method is unified.