JPS61188256A - Trouble diagnosing alarming method - Google Patents

Abstract

PURPOSE:To enable a trouble spot to be reliably decided, by a method wherein a trouble spot is not only displayed through flickering of light, but also an alarm is reported by the use of voice. CONSTITUTION:A drive circuit 9 is connected to a CPU1, and a luminous body 10, such as lamp, and sound producing body 11, such as buzzer, are connected in parallel to the drive circuit 9. In which case, in case a trouble occurs to the output side and input side of a controller and a controller itself, a code responding to the trouble spot is outputted to the drive circuit 9 from the CPU1. The luminous body 10 is flickered in response to the code, and simultaneously, the voice producing body 11 is also intermittently driven along with the code.

Description

DETAILED DESCRIPTION OF THE INVENTION <Industrial Application Field> The present invention relates to a failure diagnosis and warning method for a vehicle equipped with an electronic controller.

<Prior Art> Currently, many types of vehicles are equipped with electronic controllers, and these vehicles have the ability to control various types of loads through a large number of sensor inputs and switch inputs. Of these, the controller also has a failure diagnosis function for the input side of the switch, the load side (output side) of actuators and lamps, and the controller itself. In the case of a minor failure, the status is maintained in backup mode. For this type of failure, the results of the failure diagnosis function of the car/teller are displayed at a maintenance shop using a lamp or LED. There are many things displayed.

<Problems to be solved by the invention> In the above case, the judgment made by the human eye is very ambiguous, and the disadvantage is that it is difficult to accurately grasp the coded blinking, and it is possible to misjudge the location of the failure. be.

Accordingly, the present invention relates to a failure diagnosis and warning method that not only displays the failure location by flashing lights but also uses audio to issue a warning, thereby making it possible to reliably determine the failure location.

<Means for Solving the Problems> The present invention, which achieves the above-mentioned objects, has a drive circuit connected to the controller that, when notifying a failure of the output side, the input side of the controller, or the controller itself, causes a light emitter to be activated. It is characterized in that it blinks with a code corresponding to the type of failure, and simultaneously with the blinking of the light emitting body, the sound generator is driven in accordance with the code.

EMBODIMENTS> The present invention will now be described in detail with reference to FIG. The figure is a simplified circuit diagram centered on the controller. l is 010
%2 and 3 are interfaces, 4 is sensors, and 5 is switches.

6 is an actuator, 7 is a lamp or meter, and 8 is a power source. Signals from various sensors 4 and on/off or switching signals of each switch 5 are input to the CPU 1 via the interface 2 as the input side, and as the output side. An actuator 6 and two pumps/instruments 7 are controlled via an interface 3.

Further, the CPUI is connected to a drive circuit 9, to which a light emitting body 10 such as a lamp and a sound generating body 11 such as a buzzer are connected in parallel.

Here, if a failure occurs on the output 11% input side of the controller or the controller itself, a code corresponding to the failure location is output from the CPU 1 to the drive circuit 9, and the light emitter IO blinks in response to this code. .

At the same time, the sound generator 11 is also intermittently driven. In general, it is easier to judge by sight than by hearing, so the location of this failure can be determined with certainty.

This fault diagnosis can be done by immediately informing the driver of the fault so that he or she can make a decision, but in the case of a serious fault, it is best to stop the engine first, and then proceed with maintenance by, for example, disconnecting the switch. At that point, a flashing light or an intermittent sound may be made to notify the location of the failure. Therefore, warning lamps and buzzers may be installed in areas that cannot be seen from the single room, but they may also be provided in the case of a duster.

The diagnosis method after moving on to maintenance C is 1. For example, first activate the diagnostic switch, turn on the key switch and listen to the diagnosis result, then step on the brake and check the diagnosis result again.
The procedure is to observe, observe and listen to the diagnosis results by starting the engine, and then drive the vehicle and confirm the diagnosis results. Diagnosis while driving will alert you to any malfunctions that may be detected at that time.

<Effects of the Invention> □ As explained above, according to the present invention, the location of a failure can be notified not only by light but also by sound, and even a coded signal can be easily determined and reliable. It is possible to determine the location of the failure.

[Brief explanation of the drawing]

The figure is a simplified circuit block diagram for explaining an embodiment of the method of the present invention. In the figure, l is the CPU. 9 is a drive circuit, 10 is a light emitter, and 11 is a sound generator.

Claims (1)

[Claims] When notifying the controller of a malfunction on the output side, input side, or controller itself, the drive circuit connected to the controller causes the light emitter to blink with a code corresponding to the type of failure, and at the same time as the light emitter blinks, a sound generator A fault diagnosis warning method that is activated in accordance with the above code.