JPH0293172U - - Google Patents

Description

[Brief explanation of drawings]

FIG. 1 is a block diagram showing an embodiment of a vehicle control device having a diagnostic function according to this invention, FIG. 2 is a flowchart for explaining the operation of FIG. 1, and FIG. 3 is a diagram similar to that shown in FIG. 1. Signal waveform diagram of the main part of, 4th
The figure is a configuration block diagram showing an example of a conventional vehicle control device having a diagnostic function, FIG. 5 is a flowchart explaining the operation of FIG. 4, and FIG. 6 is a process that operates every time a vehicle speed pulse is input. FIG. 7 is a block diagram explaining the function switching logic of the indicator lamp in FIG. 4, FIG. 8 is a waveform diagram showing the state of display of working memory by the indicator lamp, and FIG. FIG. 10 is a flowchart showing a part of another example of the operation of the control arithmetic circuit in FIG. 4, and FIG. 10 is a functional block diagram of the operation of the control circuit in FIG. 1a, 1b, 1c are wheel speed sensors, 10 is a control calculation circuit, 5c is an actuator for controlling brake hydraulic pressure, and 14 is an output monitoring circuit.

Claims (1)

[Scope of utility model registration request] Wheel speed sensors 1a, 1b, and 1c provided in connection with the wheels of the vehicle, a control calculation circuit 3 that receives signals from the wheel speed sensors, and a brake hydraulic pressure control that receives actuation signals based on the operation of the control calculation circuit. an output monitoring circuit 5e that inputs a signal corresponding to the operating status of the actuator 5c and the actuator for controlling brake hydraulic pressure, and outputs a signal for canceling the brake hydraulic control to the actuator when the input signal is abnormal. In a vehicle control device having a diagnostic function, the control arithmetic circuit 10 and the output monitoring circuit 14 mutually exchange runaway check signals of the same mode, and the input runaway check signal is in a predetermined mode. If it is not specified, the control calculation circuit 10 or the output monitoring circuit controls the actuator 5.
A vehicle control device having a diagnostic function, characterized in that it outputs a signal for canceling brake hydraulic control with respect to c.