Patent
Anti skid fault detection circuit
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TLDR
In this article, the fault detection circuit is coupled between the sensor coil and tachometer portion of the anti-skid control system and detects if the sensor coils become: open circuited, shorted to ground, or shorting to a power supply.Abstract:
Fault detection circuit which is intended to be included in an anti-skid control system for a braking system of a motor vehicle. The fault detection circuit is coupled between the sensor coil and tachometer portion of the anti-skid control system and detects if the sensor coil becomes: open circuited, shorted to ground, or shorted to a power supply. If any of the aforementioned conditions arise, the fault detection circuit provides an output signal for indicating such a condition to warn the driver of the vehicle that the anti-skid control system is non operative. A low pass RC filter is utilized to limit the input signal amplitude developed across the sensor coil to a constant value which is determined by the time constant of the low pass filter. Upper and lower references voltages can be established and compared to the filter input signal to indicate failure if this voltage developed across the sensor coil approaches either the upper or lower reference voltage.read more
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References
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